Midwest/Southeast Tornadoes and Severe Weather

Losses, 2024 dollars

$2.2 billion

Losses at the time

$1.5 billion

Deaths

3

The losses and deaths are NCEI’s, counting everything the disaster did. The episodes below are only what the Weather Service filed in its Storm Events record, which counts damage differently and often not at all, so the two never add up and are shown apart.

• Hail and Damaging Winds in Colorado, June 16, 2011$324,000 · 1.75 in hail · 13 eventsA supercell thunderstorm moved across northern Kit Carson and southern Yuma counties in Colorado, and eventually merged into a line of storms moving across Nebraska.
• Hail in North Carolina, June 16, 2011$2,000 · 1 in hail · 1 eventA weak impulse aloft moved across the area during the late afternoon and evening and sparked isolated thunderstorms. One storm across Robeson County split and moved south along a north-south seabreeze boundary producing large hail.
• Hail and Damaging Winds in Kansas, June 16, 2011$30,000 · 1.75 in hail · 39 eventsSevere storms producing significant winds moved across an area to the west of Interstate 135 during the evening hours of June 16th.
• Hail and Damaging Winds in Virginia, June 16, 2011$21,000 · 1 in hail · 7 eventsIsolated thunderstorms developed along the Route 460 corridor between Bedford and Buckingham VA. Quarter size hail and damaging winds occurred with a few of these storms.
• Hail and Damaging Winds in Virginia, June 16, 2011$5,000 · 1 in hail · 5 eventsA warm front passed through the region during the 16th. Warm and humid air behind the boundary caused showers and thunderstorms to develop. Some thunderstorms were able to produce damaging wind gusts and large hail.
• Hail in South Dakota, June 16, 20110.88 in hail · 1 eventA thunderstorm dropped nickel hail northeast of Vivian.
• Damaging Winds in Kansas, June 16, 2011$200,000 · 70 kt wind · 2 eventsWith both an early morning and late evening round of thunderstorms, this Thursday featured active weather across various parts of the Central Plains.
• Hail and Damaging Wind in Nebraska, June 16, 2011$1,000 · 58 kt wind · 2 eventsA line of severe thunderstorms moved east across SW Nebraska and NW Kansas during the evening. Wind gusts to near 70 mph damaged trees and tree limbs.
• Damaging Wind in Kansas, June 16, 201151 kt wind · 1 eventA line of strong to severe storms moved across NW Kansas during the evening, resulting in a wind gust to 59 mph in Bird City.
• Damaging Wind in Tennessee, June 16, 2011$5,000 · 52 kt wind · 1 eventA cluster of thunderstorms moved into Middle Tennessee from the west during the late evening hours on June 16. One report of wind damage was received.
• Lightning Strikes in Virginia, June 16, 2011$5,000 · 2 eventsIsolated thunderstorms in advance of a weak front produced lightning strikes which caused damage across portions of southeast Virginia.
• Damaging Winds in Maryland, June 16, 2011$15,000 · 52 kt wind · 3 eventsA warm front passed through the region during the 16th. Warm and humid air behind the boundary caused showers and thunderstorms to develop. Some thunderstorms were able to produce damaging wind gusts near the Chesapeake Bay.
• Damaging Wind in Georgia, June 16, 2011$2,000 · 50 kt wind · 1 eventA shear axis extended southward across East-Central Georgia during the late evening into early evening hours.
• Flash Flooding in Virginia, June 16 to 17, 20114 eventsA warm front slowly lifted northward through northern Virginia on the evening of the 16th. Warm and very moist air was lifted along this boundary and thunderstorms developed.
• Hail in Nebraska, June 16 to 17, 20111 in hail · 2 eventsScattered thunderstorms developed in eastern Nebraska on the nose of a low-level jet during the late evening hours of June 16. The storms produced a few reports of large hail before either dissipating or moving out of the region by the early morning hours of the 17th.
• Hail and Lightning Strike in New Jersey, June 17, 2011$10,000 · 1 in hail · 3 eventsA weakening cold front crossing the region triggered isolated strong to severe storms, producing penny to quarter size hail in Essex County.
• Hail in Missouri, June 17, 20111 in hail · 2 eventsScattered thunderstorms developed as a result of increasing southerly winds that brought warmer and more unstable air into the region. A couple of storms produced large hail.
• Hail and Lightning Strikes in New Jersey, June 17, 2011$6,000 · 0.88 in hail · 3 eventsA decaying cold frontal boundary triggered thunderstorms into the afternoon of the 17th in New Jersey. Lightning caused about 8,300 homes and businesses to lose power during the morning in Somerset and Middlesex Counties.
• Hail and Damaging Winds in Illinois, June 17, 2011$19,000 · 1.75 in hail · 8 eventsA round of early morning storms was caused by increasing southwest low-level winds that brought warmer and more unstable air into the region.
• Flash Flood and Hail in Kansas, June 17 to 19, 20111.25 in hail · 13 eventsA frontal boundary across the area and an upper level disturbance moving across the central Plains into the Ozarks caused a cluster of strong to severe storms to develop. Storms produced high winds and large hail across the area.
• Flash Flood and Hail in Missouri, June 17, 20111 in hail · 6 eventsElevated convection fired up across the region. There were several reports of large hail, damaging winds and flash flooding with these storms.
• Damaging Wind in North Carolina, June 17, 201150 kt wind · 1 eventA weak cold front approached eastern North Carolina during the morning and early afternoon hours on June 17th, 2011. Showers and thunderstorms with a few damaging wind gusts were reported across Onslow County.
• Hail and Damaging Winds in Virginia, June 17, 2011$6,000 · 1.75 in hail · 17 eventsA return flow around high pressure pumped in plenty of warm and moist air over the region. Colder air aloft associated with an upper-level trough combined with the warm and moist air at the surface to develop moderate amounts of instability.
• Hail and Damaging Winds in Illinois, June 17, 201156 kt wind · 12 eventsElevated convection fired up across the region. There were several reports of large hail, damaging winds and flash flooding with these storms.
• Damaging Winds in West Virginia, June 17, 2011$12,000 · 50 kt wind · 2 eventsA complex of thunderstorms moved out of eastern Kentucky and entered West Virginia. While most of the activity dissipated as it moved through the state, some isolated severe weather managed to arrive across parts of Greenbrier County in the form of damaging winds.
• Hail in Virginia, June 17, 20111.5 in hail · 1 eventIsolated severe thunderstorm associated with a weak trough produced large hail across portions of central Virginia.
• Hail and Damaging Wind in Colorado, June 17, 20111.75 in hail · 14 eventsSevere thunderstorms produced large hail, from quarter to golfball size, across Elbert and Lincoln Counties. The hail was reportedly several inches deep in spots and several vehicles became stuck in the hail.
• Hail in Virginia, June 17, 20111.75 in hail · 2 eventsA thunderstorm complex moved from Kentucky through West Virginia and then into Virginia. The trend was for the system to be dissipating as it moved east, but enough energy remained for a lone severe thunderstorm over Buckingham County that produced golf ball size hail.
• Hail and Damaging Winds in New York, June 17, 2011$6,000 · 52 kt wind · 3 eventsA weakening cold front crossing the region triggered isolated strong to severe storms, producing nickle size hail in Manhattan and damaging winds in Suffolk County.
• Damaging Winds in Georgia, June 17, 2011$13,000 · 50 kt wind · 4 eventsA series of northwest flow short waves continued to impact the area, supported by a persistent strong subtropical ridge over Texas and an upper trough in the northeast United States.
• Hail and Damaging Winds in Ohio, June 17, 2011$4,000 · 1.75 in hail · 17 eventsA weak boundary draped across central Ohio combined with large amounts of convective available potential energy to produce severe thunderstorms across central Ohio. Most of the activity occurred during the afternoon and early evening hours.
• Flash Flooding and Flooding in Montana, June 17 to 23, 20116 eventsTwo to three inches of rain fell across the already saturated soils to raise creek and stream levels. Much of this rain fell in southern Saskatchewan, therefore the tributaries from there had the worse flooding.
• Hail and Damaging Wind in Georgia, June 17, 2011$2,000 · 1 in hail · 2 eventsAn isolated severe thunderstorm in Burke county took down some trees near the intersection of Hwy 80 east and Anderson road.
• Damaging Winds in Florida, June 17, 201156 kt wind · 6 eventsScattered severe storms developed across a very moist and unstable air mass as the sea breezes and resultant outflow boundaries moved inland. Southwest steering flow pushed the storms offshore of the Atlantic coast in the evening.
• Damaging Wind in Georgia, June 17, 201150 kt wind · 1 eventScattered severe storms developed across a very moist and unstable air mass as the sea breezes and resultant outflow boundaries moved inland. Southwest steering flow pushed the storms offshore of the Atlantic coast in the evening.
• Hail and Damaging Winds in Maryland, June 17, 2011$54,000 · 1 in hail · 13 eventsA return flow around high pressure pumped in plenty of warm and moist air over the region. Colder air aloft associated with an upper-level trough combined with the warm and moist air at the surface to develop moderate amounts of instability.
• Hail and Damaging Wind in Florida, June 17, 2011$2,000 · 50 kt wind · 2 eventsAn afternoon seabreeze developed near the coast with thunderstorms forming along the boundary. The stronger storms produced hail and strong winds.
• Hail in Connecticut, June 17, 20110.88 in hail · 2 eventsA disturbance rotating around a low in the upper levels of the atmosphere moved across the region on Friday, June 17th, triggering showers and scattered thunderstorms. Isolated strong thunderstorms produced penny to nickel size hail in Litchfield County.
• Hail and Damaging Wind in Ohio, June 17, 2011$101,000 · 1.5 in hail · 5 eventsA frontal boundary oriented west-east across northern Ohio triggered showers and thunderstorms during the late afternoon hours on June 17th. The activity lasted only a few hours and diminished by nightfall.
• Hail and Damaging Wind in Florida, June 17, 20111 in hail · 2 eventsNumerous strong to severe storms formed along the east coast sea breeze across the central Florida interior and Volusia County, producing dime to quarter sized hail and winds of 50 to 60 mph.
• Damaging Wind in New York, June 17, 201150 kt wind · 1 eventA disturbance rotating around a low in the upper levels of the atmosphere moved across the region on Friday, June 17th, triggering showers and scattered thunderstorms. An isolated severe thunderstorm produced strong winds in Rensselaer County.
• Hail and Lightning Strike in Connecticut, June 17, 2011$1,000 · 0.75 in hail · 2 eventsA weakening cold front crossing the region triggered an isolated strong storm, producing penny size hail in New Haven County and a lightning strike in Fairfield County.
• Hail and Damaging Winds in Colorado, June 17, 2011$8,000 · 1.75 in hail · 11 eventsSevere thunderstorms the southeast plains produced hail up to the size of golf-balls and winds gusts around 60 mph at times which blew over several power lines.
• Flash Flood in New Jersey, June 17, 20111 eventScattered thunderstorms produced heavy rainfall, which caused isolated flash flooding in Bergen County.
• Hail and Damaging Wind in Florida, June 17, 20111 in hail · 2 eventsSevere thunderstorms affected the area around Lake Okeechobee with high wind and hail.
• Tornado and Hail in South Dakota, June 17, 2011EF0 · 4 eventsA couple thunderstorms produced a tornado along with nickel hail in northeast South Dakota.
• Hail and Damaging Wind in Minnesota, June 17, 20111 in hail · 9 eventsA weak frontal boundary across southern Minnesota the afternoon of Friday, June 17th, caused several thunderstorms to develop from west central Minnesota, eastward into portions of east central Minnesota during the evening.
• Hail and Damaging Winds in Colorado, June 17, 20111 in hail · 6 eventsThunderstorms developed across the eastern Colorado plains and moved into Kit Carson and Cheyenne counties during the late afternoon hours, producing quarter sized hail and several severe wind gusts.
• Damaging Winds in Maryland, June 17, 2011$75,000 · 52 kt wind · 3 eventsA decaying frontal boundary still managed to act as a focus for strong to severe thunderstorms to form during the early evening of the 17th. About 2,500 homes and businesses lost power in Talbot County and the last 100 did not have it restored until later in the day on the 18th.
• Hail in West Virginia, June 17, 20110.88 in hail · 1 eventA waffling front and increasing moisture, along with mid level disturbances running along it, formed one thunderstorm complex in the western lowlands of West Virginia during the evening hours of the 17th.
• Tornado and Hail in Nebraska, June 17, 2011EF0 · 7 eventsIsolated slow moving thunderstorms developed on a weak boundary that extended across eastern Nebraska.
• Damaging Winds in Maryland, June 17, 2011$4,000 · 50 kt wind · 2 eventsScattered severe thunderstorms associated with a weak trough produced damaging winds across portions of the Lower Maryland Eastern Shore.
• Hail and Damaging Winds in Kansas, June 17 to 18, 20112.75 in hail · 60 eventsWidespread severe weather packing very strong winds and large hail pummeled all sections of Central, South Central, and Southeast Kansas.
• Hail in Iowa, June 17, 20111 in hail · 1 eventAn isolated slow moving thunderstorm developed on a weak boundary in west central Iowa. Due to moderately high instability present the storm produced a relatively prolonged period of hail in the Persia area.
• Hail and Damaging Winds in Kansas, June 17 to 18, 2011$6,000 · 2 in hail · 22 eventsLate in the evening on June 17th a series of severe thunderstorms ripped through portions of northeast and east central Kansas. Strong winds up to 75 mph were reported with these storms, in addition to large hail up to the size of golf balls.
• Hail and Damaging Winds in Kansas, June 17, 2011$56,000 · 1.5 in hail · 8 eventsA large area of showers and thunderstorms developed across the eastern Colorado Plains during the afternoon. Scattered embedded severe thunderstorms moved into western Kansas during the evening hours, producing wind damage across Greeley and Wichita counties.
• Hail and Damaging Winds in Kansas, June 17 to 18, 20112 in hail · 22 eventsThunderstorms that developed along a weak cold front in eastern Colorado drifted into the area during the late evening hours.
• Flash Flooding and Hail in Illinois, June 17 to 18, 2011$163 million · 52 kt wind · 11 eventsThunderstorms initiated along an old outflow boundary extending from Jacksonville to near Lawrenceville during the evening of June 17th.
• Hail in Kansas, June 17, 20111 in hail · 2 eventsPrimarily between 11 PM and 4 AM CDT on this late Friday evening into early Saturday morning, nearly all of North Central Kansas experienced widespread coverage of thunderstorms.
• Flash Flooding and Damaging Winds in Illinois, June 17 to 18, 201161 kt wind · 11 eventsThunderstorm complex developed along a warm front over the forecast area. There were several reports of damaging winds and flash flooding with these storms.
• Damaging Winds in Kansas, June 18, 201170 kt wind · 6 eventsA warm front across east central Kansas, helped generate severe thunderstorms in the early morning hours of June 18, 2011. There were several reports of high winds.
• Hail and Damaging Winds in Kansas, June 18, 20111 injured · 2 in hail · 18 eventsLow level upslope on the poleward side of a front along with an approaching upper level system helped produce thunderstorms.
• Damaging Winds in Missouri, June 18, 20111 injured · $111,000 · 65 kt wind · 16 eventsA warm front across west central Missouri, caused severe thunderstorms to move across the area, in the early morning hours of June 18, 2011. There were numerous reports of thunderstorm wind damage.
• Hail in Indiana, June 18, 20110.75 in hail · 1 eventNumerous thunderstorms developed in the vicinity of a warm front that was located over central Illinois and central Indiana. The storms organized into a mesoscale convective system that propagated southward across southwest Indiana.
• Tornadoes and Flash Flood in Missouri, June 18 to 19, 2011$68,000 · EF1 · 43 eventsA frontal boundary across the area and an upper level disturbance moving across the central Plains into the Ozarks caused a cluster of strong to severe storms to develop. Storms produced high winds and large hail across the area.
• Damaging Winds in Missouri, June 18, 20113 injured · 61 kt wind · 11 eventsThunderstorm complex developed along a warm front over the forecast area. There were several reports of damaging winds and flash flooding with these storms.
• Hail and Damaging Wind in Illinois, June 18, 2011$14,000 · 50 kt wind · 4 eventsNumerous thunderstorms developed in the vicinity of a warm front that was located over central Illinois and central Indiana. The storms organized into a mesoscale convective system that propagated southward across southern Illinois.
• Hail and Damaging Wind in Missouri, June 18, 2011$2,000 · 1 in hail · 3 eventsA dissipating line of thunderstorms, produced a few severe weather reports in Bates and Harrison Counties, in the early morning hours of June 18, 2011.
• Flash Flooding and Flooding in Wisconsin, June 18 to 22, 2011$88,000 · 50 kt wind · 17 eventsScattered thunderstorms developed well north of a warm front, that was across southern Iowa, during the evening of the June 18th. These storms were slow moving and produced some localized heavy rain and flash flooding across Crawford and Vernon Counties.
• Flash Flooding and Flood in Minnesota, June 18 to 19, 2011$2,000 · 7 eventsScattered thunderstorms developed well north of a warm front, that was across southern Iowa, during the evening of the June 18th. These storms were slow moving and produced some localized heavy rain and flash flooding across Wabasha and Houston Counties.
• Damaging Wind and Heavy Rain in Iowa, June 18, 2011$2,000 · 52 kt wind · 3 eventsA large thunderstorm complex formed to the south and west of Iowa as an inverted trough moved into western Iowa. The airmass was moderately unstable with around 2000 J/kg of CAPE and lifted indices around -5 C. There was little shear available however, under 20 kts.
• Lightning Strike in Kentucky, June 18, 2011$250,000 · 1 eventLightning struck equipment at the Mount Vernon water plant, knocking out both pump motors. This slowed the plants pumping capacity to nearly every water district in the county except Livingston.
• Flash Flood in Missouri, June 18, 20111 eventSlow moving showers and thunderstorms moved across northeast Missouri during the mid to late morning of June 18. Rainfall totals of 1 to 3 inches resulted in flash flooding in parts of Clark County.
• Damaging Wind in Kentucky, June 18, 2011$10,000 · 52 kt wind · 1 eventNumerous thunderstorms developed in the vicinity of a warm front that was located over central Missouri and central Illinois. The storms organized into a mesoscale convective system that propagated southeastward across western Kentucky.
• Hail and Damaging Winds in Tennessee, June 18, 20111 injured · $9,000 · 61 kt wind · 6 eventsA mesoscale convective system developed in association with an upper level disturbance over Southern Missouri during the early morning hours of June 18th, 2011. The remnants of the system moved into West Tennessee by the mid-morning hours.
• Hail and Damaging Winds in Tennessee, June 18, 2011$99,000 · 1.5 in hail · 12 eventsA cluster of severe thunderstorms moved across southern portions of Middle Tennessee during the late morning and early afternoon hours on June 18. Several reports of wind damage and large hail were received.
• Hail in Vermont, June 18, 20111.75 in hail · 12 eventsA cold front along with an cold upper level disturbance moved across a moderately unstable air mass across Vermont during the afternoon of June 18th.
• Hail and Damaging Winds in North Carolina, June 18, 201155 kt wind · 24 eventsA mature squall line crossed from eastern Tennessee, into the mountains of North Carolina, during the early afternoon hours. While the shear was fairly weak, the strong cold pool and moderate instability ahead of the line supported quite a bit of wind damage over the mountains.
• Hail and Damaging Winds in South Carolina, June 18, 20112 injured · 1.25 in hail · 16 eventsA mature squall line crossed from eastern Tennessee, into the mountains of North Carolina, during the early afternoon hours.
• Damaging Winds in North Carolina, June 18, 2011$62,000 · 60 kt wind · 8 eventsThunderstorm complexes moved southeast from Kentucky into Tennessee. Outflow boundaries from these complexes moved eastward into North Carolina and touched of showers and storms. Some of these storms increased to severe levels and produced damaging thunderstorm winds.
• Hail in Colorado, June 18, 20111.5 in hail · 8 eventsSevere thunderstorms produced large hail, from quarter to ping pong size, across parts of Elbert, Lincoln and Washington Counties.
• Damaging Winds in Alabama, June 18, 2011$252,000 · 65 kt wind · 35 eventsA severe mesoscale convective system (MCS) that originated in central Kansas on the 17th progressed east and southeast into the Tennessee Valley during the afternoon of the 18th.
• Damaging Winds in Tennessee, June 18, 2011$146,000 · 63 kt wind · 16 eventsA severe mesoscale convective system (MCS) that originated in central Kansas on the 17th progressed east and southeast into the Tennessee Valley during the afternoon of the 18th.
• Hail and Damaging Winds in Tennessee, June 18, 2011$68,000 · 1 in hail · 6 eventsA boundary across the region triggered isolated severe thunderstorms during the peak heating of the afternoon hours. Most of the storm reports were for damaging thunderstorm wind but hail as large as quarters were also reported.
• Tornado in Nebraska, June 18, 2011EF0 · 1 eventStorms developed over the panhandle during the afternoon and produced a brief tornado.
• Hail and Damaging Winds in Georgia, June 18, 20111 death · 1 injured · $3.3 million · 1.75 in hail · 36 eventsA series of strong short waves were moving across the U.S. These short waves were ejecting from a large upper trough in the western U.S. These vigorous short waves encountered a hot, moist, unstable air mass across the U.S.
• Hail and Damaging Winds in Maine, June 18, 20111.75 in hail · 26 eventsA surface cold front tracking southeast, combined with good height falls aloft and jet exit region, set off a broken line of strong storms and supercells across the county warning area. Some storms formed on or were enhanced by the sea breeze boundary.
• Hail and Damaging Winds in Florida, June 18, 20111 in hail · 8 eventsMultiple severe thunderstorms occurred from metro Orlando to the coast of Brevard and Volusia Counties.
• Damaging Winds in North Carolina, June 18, 20111 death · $76,000 · 50 kt wind · 26 eventsA linear mesoscale convective complex moved southeast, crossing the southern Appalachians and into North Carolina during the afternoon of the 18th.
• Damaging Wind in Florida, June 18, 201150 kt wind · 1 eventAn isolated storm formed across Putnam county under unstable southwest steering flow.
• Damaging Winds and Lightning Strike in Virginia, June 18, 2011$119,000 · 60 kt wind · 8 eventsThunderstorm complexes moved southeast from Kentucky into Tennessee. Outflow boundaries from these complexes moved eastward into Virginia and touched of showers and storms. Some of these storms increased to severe levels and produced damaging thunderstorm winds.
• Damaging Winds in South Carolina, June 18, 2011$64,000 · 60 kt wind · 13 eventsClusters of severe thunderstorms produced some large hail and wind damage across the Pee Dee region and areas of the Midlands.
• Hail and Damaging Winds in New Hampshire, June 18, 20111 in hail · 5 eventsA surface cold front tracking southeast, combined with good height falls aloft and jet exit region, set off a broken line of strong storms and supercells across the county warning area. Several storms produced 1 inch hail and a few storms also produced wind damage.
• Hail in Minnesota, June 18, 20111.25 in hail · 2 eventsA weak frontal boundary remained nearly stationary across eastern Minnesota during the afternoon and evening of Saturday, June 18th.
• Damaging Winds in North Carolina, June 18, 2011$30,000 · 55 kt wind · 3 eventsA boundary across the region triggered isolated severe thunderstorms during the afternoon hours. Most of the storm reports were for damaging thunderstorm wind.
• Tornadoes and Hail in Colorado, June 18, 2011$2,000 · EF0 · 15 eventsA supercell thunderstorm, embedded in a line of storms, moved southeast across Cheyenne County during the afternoon producing a tornado, wind damage and hail up to baseball size.
• Hail and Damaging Wind in Oklahoma, June 18, 20111.75 in hail · 6 eventsA few severe thunderstorms produced hail up to golf-ball size and winds around 60 mph.
• Damaging Winds in Georgia, June 18, 201160 kt wind · 4 eventsThe northern end of a large MCS moved across northeast Georgia during the late afternoon and early evening hours. The atmosphere was very unstable over the region and the storms knocked down numerous trees over the area.
• Hail and Heavy Rain in North Dakota, June 18, 20111 in hail · 3 eventsSlow moving thunderstorms moving to the northeast over south central North Dakota resulted in one report of very heavy rain and two reports of large hail.
• Damaging Winds in South Carolina, June 18, 2011$10,000 · 50 kt wind · 9 eventsA broken line of thunderstorms developed along the lee side of the Appalachians during the middle of the afternoon. These thunderstorms then moved into the Pee Dee Region during the evening. Wind damage was associated with the gust front which preceded the actual thunderstorms.
• Tornado and Hail in Kansas, June 18, 2011EF0 · 7 eventsA supercell thunderstorm, embedded in a line of storms, moved southeast across Cheyenne County Colorado during the afternoon producing a tornado, wind damage and hail up to baseball size.
• Damaging Wind in West Virginia, June 18, 2011$500 · 52 kt wind · 1 eventAn upper-level disturbance passed through the region on the 18th. The disturbance combined with instability to trigger showers and thunderstorms. An isolated thunderstorm did produce damaging wind gusts.
• Hail in South Dakota, June 18, 20111 in hail · 3 eventsA couple severe thunderstorms brought quarter size hail to Corson and Dewey counties.
• Damaging Winds in Texas, June 18, 201161 kt wind · 2 eventsIsolated showers and thunderstorms developed along a dryline that was draped across West Central Texas. Strong winds were the main hazards with these storms, mainly occurring across the Big Country.
• Damaging Winds in North Carolina, June 18, 2011$40,000 · 51 kt wind · 7 eventsA broken line of thunderstorms developed along the lee side of the Appalachians during the middle of the afternoon. These thunderstorms then moved into Robeson and Bladen counties during the evening.
• Hail and Damaging Winds in Texas, June 18, 20112 injured · $1.4 million · 1.75 in hail · 15 eventsSeveral thunderstorms developed along a stalled frontal boundary near Parker, Wise, and Cooke County. The environment was very unstable with a very dry airmass in the lowest 10 thousand feet of the atmosphere.
• Damaging Wind in South Dakota, June 18, 201152 kt wind · 1 eventA thunderstorm developed over Fall River County and produced 60 mph wind gusts in Oelrichs.
• Hail and Damaging Winds in Kansas, June 18 to 19, 20112.5 in hail · 56 eventsStrong storms produced widespread hail across much of South Central and Southeast Kansas.
• Hail and Damaging Winds in Georgia, June 18, 2011$6,000 · 1 in hail · 3 eventsClusters of severe thunderstorms produced some wind damage, mostly trees, and some large hail in the CSRA.
• Hail in Colorado, June 18, 20110.88 in hail · 1 eventA thunderstorm produced hail up to the size of nickels.
• Flash Flood in West Virginia, June 18, 2011$150,000 · 1 eventThunderstorms training along a stalled frontal boundary produced heavy rainfall and flash flooding in Cameron, West Virginia.
• Hail and Damaging Winds in North Carolina, June 18 to 19, 20111.25 in hail · 5 eventsA weak cold front pushed southeast into eastern North Carolina on June 19th, 2011. Weak showers and thunderstorms developed ahead of the front producing a few hail reports in Carteret County.
• Tornadoes and Hail in Oklahoma, June 18, 2011$10,000 · EF0 · 8 eventsA dry line advanced eastward into eastern Oklahoma on the evening of the 18th. An isolated supercell thunderstorm developed along this boundary and moved across several counties of far northeastern Oklahoma.
• Hail in South Dakota, June 18, 20111 in hail · 2 eventsA slow moving severe thunderstorm produced quarter sized hail east of Thunder Butte.
• Flash Flooding and Damaging Wind in Wisconsin, June 18, 2011$5,000 · 52 kt wind · 3 eventsA weak frontal boundary remained nearly stationary across eastern Minnesota and western Wisconsin during the afternoon and evening of Saturday, June 18th.
• Damaging Winds in South Carolina, June 18, 2011$31,000 · 55 kt wind · 12 eventsAn upstream convective complex cold pooled over inland South Carolina, then transformed to a boundary driven convective event during the early night hours.
• Hail and Damaging Winds in Georgia, June 18, 2011$42,000 · 60 kt wind · 20 eventsAn upstream convective complex cold pooled over inland Georgia, then transformed to a boundary driven convective event during the early night hours. Thunderstorms became severe as they entered a moderately unstable atmosphere featuring mixed layer CAPE between 2000-3000 J/KG.
• Flash Flooding and Flood in Missouri, June 18 to 19, 2011$30,000 · 3 in hail · 33 eventsSevere thunderstorms developed along a surface boundary, that was draped across west central Missouri, during the late evening hours of June 18th, into the early morning hours of June 19th, 2011. Hail, damaging winds, and flash flooding were observed.
• Tornadoes and Hail in Missouri, June 18 to 19, 20113 injured · $150,000 · EF2 · 23 eventsThe next in a series of thunderstorm complexes developed over southeastern Kansas and slid east across forecast area. There were numerous reports of large hail and damaging winds, as well as two tornadoes.
• Hail and Damaging Winds in Nebraska, June 18, 2011$21 million · 1 in hail · 5 eventsAlthough this rather localized Saturday evening severe weather event paled in comparison to what parts of South Central Nebraska would experience during the next 48 hours, it nonetheless brought some hail, strong winds and crop damage to parts of Dawson, Buffalo, Phelps, Kearney…
• Flash Flooding and Flooding in Illinois, June 18 to 21, 20111 death · $850,000 · 6 eventsA persistent frontal boundary interacting with a very moist airmass led to periods of showers and thunderstorms across central Illinois on June 19th and 20th.
• Tornado and Damaging Winds in Illinois, June 19, 20111 injured · $1.0 million · EF1 · 10 eventsA long-lived bow echo raced eastward across parts of southern Illinois at 60 mph. An extensive rain shield in the wake of the fast-moving line of storms supported development of a cold pool that sustained its growth.
• Flash Flood in Minnesota, June 19, 20111 eventA north-south occluded front through central Minnesota brought tropical air northward. A few slow moving thunderstorms caused minor flash flooding. Radar estimated 2 to 4 inches of rainfall in the area from Hinckley to just west of Grantsburg, WI.
• Flash Flood in Illinois, June 19, 20111 eventThe next in a series of thunderstorm complexes developed over southeastern Kansas and slid east across forecast area. There were considerable rainfall with this system causing flash flooding.
• Hail and Damaging Winds in South Carolina, June 19, 20111.25 in hail · 8 eventsScattered thunderstorms produced a little wind damage over the upstate early in the morning. During the afternoon hours an isolated thunderstorm developed over Greenville. The storm briefly took on supercell characteristics as it moved across the metro area.
• Damaging Wind in Illinois, June 19, 2011$3,000 · 52 kt wind · 1 eventA persistent frontal boundary interacting with a very moist airmass led to periods of showers and thunderstorms across southeast Illinois early in the morning on June 19th. One of the storms produced wind damage across Clay County.
• Hail and Damaging Winds in Kentucky, June 19, 201152 kt wind · 6 eventsA long-lived bow echo raced eastward across parts of northwest Kentucky at 50 mph. An extensive rain shield in the wake of the fast-moving line of storms supported development of a cold pool that sustained its growth.
• Damaging Winds and Heavy Rain in Indiana, June 19, 2011$8,000 · 61 kt wind · 5 eventsA long-lived bow echo raced eastward across parts of southwest Indiana at 50 mph. An extensive rain shield in the wake of the fast-moving line of storms supported development of a cold pool that sustained its growth.
• Damaging Wind in Indiana, June 19, 2011$1,000 · 52 kt wind · 1 eventComing soon.
• Damaging Winds and Lightning Strike in North Carolina, June 19, 2011$200,000 · 60 kt wind · 6 eventsThe northern end of a line of thunderstorms moved across the southwest mountains of North Carolina during the overnight hours, producing areas of wind damage.
• Tornadoes and Damaging Winds in Kentucky, June 19, 2011$55,000 · EF2 · 11 eventsA severe squall line moved east along the Ohio River west of Louisville during the early morning hours on June 19th. Along with widespread damaging winds, several tornadoes developed along the leading edge of the gust front across southern Indiana and Central Kentucky.
• Tornado and Damaging Winds in Indiana, June 19, 2011EF0 · 7 eventsA severe squall line moved east along the Ohio River west of Louisville during the early morning hours on June 19th. Along with widespread damaging winds, several tornadoes developed along the leading edge of the gust front across southern Indiana and Central Kentucky.
• Hail and Damaging Winds in Nebraska, June 19 to 20, 2011$8.1 million · 2.75 in hail · 33 eventsIn terms of widespread, high-impact severe weather, the 24-hour period commencing on Sunday evening the 19th was likely the worst of the 2011 severe weather season for much of South Central Nebraska.
• Flash Flood in North Carolina, June 19, 2011$10,000 · 1 eventA persistent area of thunderstorms along the Tennessee\North Carolina line caused flash flooding in parts of the North Carolina mountains.
• Flash Flood in Virginia, June 19, 20111 eventIsolated thunderstorms associated with low pressure produced heavy rains which caused flash flooding across portions of the Virginia Eastern shore.
• Hail and Damaging Winds in Tennessee, June 19, 2011$20,000 · 1 in hail · 8 eventsIsolated thunderstorms developed across east Tennessee along a boundary during the afternoon hours. A few of the storms reported damaging thunderstorm wind and large hail. A funnel cloud was also spotted.
• Hail and Damaging Winds in South Carolina, June 19, 2011$15,000 · 1.75 in hail · 11 eventsAn outflow boundary helped to enhance thunderstorm coverage and intensity. There were numerous reports of large hail and a few wind damage reports.
• Hail and Damaging Winds in Florida, June 19, 20111.25 in hail · 5 eventsSevere storms affected the southeast coast metro areas of Broward and Miami-Dade Counties.
• Tornado in Iowa, June 19, 2011EF0 · 2 eventsAn unstable airmass was in place over Iowa with temperatures in the low 80s and dewpoint readings in the mid 60s. CAPE was in the 2000 to 3000 J/kg range, with lifted indices around -5 C.
• Hail in Nebraska, June 19, 20111.5 in hail · 1 eventThunderstorms developed across the southern panhandle and produced some hail.
• Tornado in Wisconsin, June 19, 2011EF0 · 1 eventLift generated by a short wave acted on a moist and unstable air mass to produce afternoon thunderstorms over portions of southern Wisconsin.
• Hail in Wyoming, June 19, 20111.25 in hail · 4 eventsStrong thunderstorms developed during early afternoon and produced hail and heavy rain.
• Hail in Illinois, June 19, 20111 in hail · 1 eventAn isolated severe thunderstorm erupted during the hottest and most unstable time of the day. A weak mid-level impulse crossing the Mid-Mississippi Valley may have enhanced large scale ascent enough to initiate the storm.
• Flash Flood and Heavy Rain in Wyoming, June 19, 20112 eventsThunderstorm with heavy rain caused flash flooding across Laramie County.
• Hail in Illinois, June 19, 20111.25 in hail · 2 eventsA few strong to severe thunderstorms moved across far northern Illinois during the late afternoon of June 19th.
• Flash Flood and Heavy Rain in North Dakota, June 19, 2011$100,000 · 3 eventsSlow moving heavy showers and thunderstorms resulted in flash flooding conditions over portions of north central North Dakota during the late afternoon and evening of June 19th. One funnel cloud report over far west central North Dakota was also received.
• Hail in Kentucky, June 19, 20111.5 in hail · 4 eventsAn isolated severe thunderstorm erupted during the hottest and most unstable time of the day. A weak mid-level impulse crossing the Mid-Mississippi Valley may have enhanced large scale ascent enough to initiate the storm.
• Flash Flooding and Heavy Rain in Nebraska, June 19, 20116 eventsSevere thunderstorms produced hail and heavy rain rain which caused areas of flash flooding.
• Flash Flood in Ohio, June 19, 20111 eventA warm front was moving into northwestern Ohio during the afternoon and evening hours. Isolated thunderstorms developed, producing torrential rainfall. This combine with very slow movement caused flash flooding across portions of Henry county.
• Flash Flooding and Hail in Nebraska, June 19 to 20, 2011$139,000 · 2.75 in hail · 59 eventsA strong upper level disturbance interacted with a moist and unstable atmosphere to produce an outbreak of severe thunderstorms across western and north central Nebraska during the evening and early morning hours on June 19th, 2011.
• Hail and Damaging Winds in Tennessee, June 19, 2011$22,000 · 2.75 in hail · 29 eventsSeveral multicell and supercell thunderstorms moved across northern and eastern portions of Middle Tennessee during the late afternoon and evening hours on June 19. Numerous reports of large hail and a few reports of damaging winds were received.
• Tornado and Hail in Colorado, June 19, 2011EF0 · 24 eventsSevere thunderstorms produced very large hail, from quarter to tennis ball size, and strong winds across the northeast plains of Colorado. The largest hail was observed in Adams, Logan, Phillips and Sedgwick Counties. A brief tornado touchdown was reported in Sedgwick County.
• Flash Flooding and Flooding in Ohio, June 19 to 20, 2011$1.5 million · 0.75 in hail · 7 eventsA stalled frontal boundary was the focus for showers and thunderstorms to develop and train across portions of eastern Ohio, the northern West Virginia panhandle, and western Pennsylvania producing flash flooding and flooding.
• Flash Flood and Heavy Rain in Montana, June 19, 20113 eventsAnother group of storms approached from the southwest over a very moist and unstable air mass.
• Tornadoes in Nebraska, June 19, 2011$35,000 · EF0 · 3 eventsSeveral rounds of severe storms moved across southern Nebraska during the evening hours, resulting in three tornadoes over Dundy and Red Willow counties. None of the tornadoes resulted in significant damage as they remained over open fields.
• Tornado and Hail in Kansas, June 19, 2011EF0 · 12 eventsA supercell storm developed during the early evening hours of June 19th across southeast Dickinson, Morris, and Geary Counties. Hail up to the size of baseballs were reported 5 miles east of Woodbine. A brief tornado was also observed 3 miles east of Woodbine.
• Flash Flooding and Flooding in Kentucky, June 19 to 20, 20111 death · $5.3 million · 65 kt wind · 46 eventsDuring the overnight and early morning hours of Monday, June 20th, numerous strong to severe thunderstorms wreaked havoc on portions of eastern KY. Between 2 and 5 am EDT, numerous trees were blown across Laurel, Bell, Knox, and Whitley counties.
• Flash Flood in West Virginia, June 19, 2011$15,000 · 1 eventStrong mid level dynamics overcame low buoyancy to reform showers in southern Ohio during the late afternoon. The showers were efficient rain producers as they moved east into West Virginia.
• Hail and Damaging Winds in Colorado, June 19, 2011$21 million · 2 in hail · 10 eventsTwo rounds of severe storms rolled across the northern third of Yuma county during the evening hours, resulting in widespread wind damage.
• Hail in Iowa, June 19 to 20, 20111.75 in hail · 7 eventsSupercell Thunderstorms developed in a short line from southeast Nebraska into southwest Iowa during the late evening of June 19th.
• Tornado in Missouri, June 19, 2011EF0 · 1 eventAn upper level storm system, moved across extreme northern Missouri, during the evening hours of June, 19, 2011. One weak tornado was observed in Atchison County Missouri.
• Damaging Winds in North Carolina, June 19, 2011$25,000 · 55 kt wind · 2 eventsIsolated thunderstorms developed across extreme southwest North Carolina during the evening hours producing damaging thunderstorm wind.
• Tornado and Hail in Iowa, June 19 to 20, 2011$760,000 · EF1 · 21 eventsA strong warm front was located to the south of Iowa as a very strong push of warm and moist air was driven north into the area by a 60 kt low level jet. The airmass was very unstable with CAPE greater than 5000 J/kg with lifted indices near -10 just to the south of the front.
• Hail and Damaging Winds in South Carolina, June 19 to 20, 201155 kt wind · 4 eventsA narrow line of thunderstorms moved out of the southwest mountains of North Carolina and into the western part of the upstate around midnight. The line of storms produced a fair amount of wind damage.
• Hail and Damaging Wind in North Carolina, June 19 to 20, 20111.75 in hail · 3 eventsIsolated thunderstorms developed across the central Piedmont and coastal plain as a weak upper level disturbance combined with a very moist and moderately unstable air mass. These storms resulted in hail up to the size of golf balls, as well as a couple of trees being blown down.
• Flash Flood and Flooding in Pennsylvania, June 19 to 20, 2011$270,000 · 6 eventsA stalled frontal boundary was the focus for showers and thunderstorms to develop and train across portions of eastern Ohio, the northern West Virginia panhandle, and western Pennsylvania producing flash flooding and flooding.
• Hail in North Carolina, June 19, 2011$1,000 · 1 in hail · 1 eventLate night thunderstorms developed along a subtle surface boundary.
• Flash Flood and Hail in Iowa, June 19 to 20, 2011$105,000 · 1.75 in hail · 4 eventsDuring the early morning hours of June 20 a low pressure system located over central Kansas with a front extending into Iowa produced heavy rain-producing showers and thunderstorms across southeast Iowa, northeast Missouri, and west central Illinois.
• Flash Flooding and Hail in Missouri, June 19 to 20, 2011$30,000 · 1.75 in hail · 3 eventsDuring the early morning hours of June 20 a low pressure system located over central Kansas with a front extending into Iowa produced heavy rain-producing showers and thunderstorms across southeast Iowa, northeast Missouri, and west central Illinois.
• Hail and Damaging Winds in North Carolina, June 20, 2011$65,000 · 1 in hail · 7 eventsA west to east oriented stationary front stalled across southeastern North Carolina during the early morning hours of June 20th, 2011. Several severe thunderstorms produced hail and damaging winds across eastern North Carolina.
• Flash Flooding and Flooding in Indiana, June 20, 2011$39,000 · 1.75 in hail · 25 eventsA line of thunderstorms developed along a warm front moving northeast through central Indiana during the early morning hours of June the 20th. The initial severe impacts came in the form of large hail, but transitioned to a wind damage threat as the morning wore on.
• Hail and Damaging Winds in South Carolina, June 20 to 22, 20111 death · 1 injured · $135,000 · 60 kt wind · 28 eventsClusters of thunderstorms produced wind damage and hail across the forecast area of central South Carolina. Wind damage was mainly confined to trees and powerlines.
• Flash Flooding and Damaging Winds in Tennessee, June 20, 20111 death · $219,000 · 60 kt wind · 10 eventsA thunderstorm complex tracked across east Tennessee during the morning hours. Storm reports contained damaging thunderstorm wind along with flash flooding. One person drowned in Claiborne County.
• Damaging Wind in Missouri, June 20, 201152 kt wind · 1 eventIsolated storms developed over northeast Missouri and west central Illinois. There were some reports of wind damage with these storms.
• Hail and Damaging Winds in Colorado, June 20, 20111.75 in hail · 6 eventsSevere thunderstorms produced hail up to the size of golf-balls and damaging wind gusts.
• Flash Flooding and Heavy Rain in North Dakota, June 20, 2011$60,000 · 3 eventsContinued redevelopment of thunderstorms over north central Stutsman County and central Foster County resulted in flash flooding. A measured heavy rain report of 4.22 inches was received from south central Foster County.
• Damaging Winds and Lightning Strikes in Illinois, June 20, 2011$55,000 · 52 kt wind · 4 eventsA persistent frontal boundary interacting with a very moist airmass led to widely scattered thunderstorms across north central Illinois early in the morning on June 20th. A few of the storms produced wind damage across Marshall County.
• Tornado and Flash Flooding in Illinois, June 20, 2011$276,000 · EF0 · 7 eventsStrong to severe thunderstorms moved across parts of central Illinois during the morning hours of June 20th.
• Hail and Damaging Winds in Kansas, June 20, 2011$553,000 · 4.25 in hail · 12 eventsA small cluster of thunderstorms moved northeast across Wallace and Logan counties around sunrise and produced a swath of damaging wind and base ball sized hail.
• Damaging Wind in Indiana, June 20, 201150 kt wind · 1 eventStrong to severe thunderstorms moved across parts of northwest Indiana during the morning hours of June 20th.
• Hail and Damaging Winds in Indiana, June 20, 201165 kt wind · 6 eventsA line of strong to severe storms moving through central Indiana clipped portions of northern Indiana with locally damaging winds.
• Hail in Colorado, June 20, 20110.88 in hail · 1 eventSeveral rounds of strong thunderstorms moved northeast across Cheyenne County, Colorado during the morning hours, with one storm producing a nickel hail report near the Kansas border.
• Hail and Lightning Strike in Colorado, June 20, 2011$50,000 · 1.75 in hail · 3 eventsA severe thunderstorm produced golfball size hail in Sedgwick County. A lightning strike caused significant damage to a home in Centenniel.
• Hail in Indiana, June 20, 20111 in hail · 2 eventsA warm front lifting north across the Ohio Valley produced a severe thunderstorm in southeastern Indiana. The primary threat from this storm was large hail.
• Hail and Damaging Winds in Kansas, June 20, 20111.75 in hail · 17 eventsA strong cold front and rapidly cooling temperatures aloft helped generate morning thunderstorms with severe weather prevalent across the western counties.
• Flash Flooding in Kentucky, June 20, 2011$39,000 · 4 eventsThunderstorms developed along a warm front in an increasingly unstable airmass. This instability, combined with precipitable water values near two inches, produced thunderstorms that caused flash flooding in northern Kentucky.
• Tornadoes and Flash Flooding in Kansas, June 20, 2011$18 million · EF3 · 25 eventsA strong, slow-moving low pressure system moved across northwest Kansas during the afternoon, resulting in over a dozen tornadoes, some strong and long-lived. The strongest tornadoes occurred over Graham and Norton counties. Other reports of baseball sized hail were received.
• Tornadoes in North Dakota, June 20, 2011EF0 · 4 eventsA trough of low pressure extending north through the central Dakotas combined with a weak area of low pressure aloft to create an environment favorable for funnel cloud activity.
• Flash Flood and Hail in Nebraska, June 20, 20111.25 in hail · 3 eventsA strong,slow-moving upper low pressure area resulted in several rounds of showers and thunderstorms moving across southern Nebraska. Large hail occurred early in the afternoon over Dundy county with flash flooding reported later in the afternoon over Red Willow county.
• Flash Flooding in South Dakota, June 20 to 21, 20112 deaths · 5 eventsA large upper level low pressure area along with deep moisture brought very heavy rains to central South Dakota. Rainfall amounts of 3 to 7 inches occurred across parts of the area resulting in flash flooding.
• Tornado in Kansas, June 20, 2011$100,000 · EF1 · 1 eventWhile a significant severe weather outbreak with several strong tornadoes struck parts of northwest Kansas to the west, and south central Nebraska to the north on this Monday afternoon, this-six county area in North Central Kansas almost missed out on severe weather entirely.
• Tornadoes and Hail in Nebraska, June 20, 20111 injured · $31 million · EF3 · 36 eventsWith 11 confirmed tornadoes, several of them significant, this Monday afternoon proved to be the most active tornado day in over three years within South Central Nebraska, since 29 May 2008.
• Hail and Damaging Winds in Kansas, June 20, 2011$9,000 · 2 in hail · 48 eventsSupercell storms developed in Ottawa and Cloud counties during the late afternoon and early evening hours of June 20, 2011. Hail up to the size of 2 inches in diameter was reported with these storms.
• Flash Flooding and Flooding in Nebraska, June 20, 2011$21,000 · 1 in hail · 14 eventsThunderstorms containing very heavy rainfall occurred across portions of southwest Nebraska causing flash flooding over portions of western Lincoln and eastern Keith county during the evening hours on June 20th, 2011.
• Hail and Damaging Winds in Texas, June 20, 20112.5 in hail · 6 eventsAn upper level shortwave in conjunction with a dryline, aided in the development of scattered showers and thunderstorms across the Big Country. Large hail and strong winds were the main hazards with these thunderstorms.
• Hail and Damaging Winds in Oklahoma, June 20, 2011$9,000 · 1.75 in hail · 26 eventsAn unusually strong storm system traversed the southern/central Plains. A strengthening surface low pressure located over southwest Kansas, moved northeast through the afternoon, dragging a cold front into Oklahoma.
• Tornadoes and Hail in Nebraska, June 20, 20111 injured · $280,000 · EF1 · 33 eventsA large upper level low pressure system moved from northwest Kansas into south central Nebraska during the late afternoon and evening of June 20.
• Tornado and Hail in Texas, June 20 to 21, 20112 injured · $1.8 million · EF0 · 70 eventsA strong summertime trough dug into the Plains with an attendant dryline and cold front moving into north Texas. Two rounds of storms affected north Texas beginning the evening of the 20th and continuing into the early morning hours of the 21st.
• Flash Flooding and Damaging Winds in South Dakota, June 20, 2011$20,000 · 61 kt wind · 8 eventsThunderstorms produced flash flooding and damaging winds at several locations in southeast South Dakota during the evening of June 20th. The thunderstorms affected the area from the Missouri River to Interstate 90.
• Tornado and Damaging Winds in Iowa, June 20, 2011EF1 · 8 eventsA large upper level low pressure system moved from northwest Kansas into south central Nebraska during the late afternoon and evening of June 20.
• Damaging Wind in Mississippi, June 20, 2011$2,000 · 1 eventOutflow winds blew down two small trees in the Eden community of Yazoo County.
• Tornado and Flash Flood in Iowa, June 20, 20112 injured · $245,000 · EF0 · 15 eventsThunderstorms produced flash flooding and damaging winds at several locations in northwest Iowa on the evening of June 20th. There was also one tornado reported.
• Hail and Damaging Winds in Oklahoma, June 20, 2011$47,000 · 1.5 in hail · 16 eventsThunderstorms developed into northeastern Oklahoma along a cold front that moved into the region on the evening of the 20th. The strongest thunderstorms produced damaging winds and large hail.
• Tornadoes and Hail in Iowa, June 20 to 21, 2011$721,000 · EF1 · 25 eventsA very intense storm system moved through the central Rockies into the Plains. The upper low looked more like a late winter or spring system, completely closed over northwest Kansas by the evening of the 20th.
• Damaging Wind in Kansas, June 20, 2011$2,000 · 52 kt wind · 1 eventA weakening squall line, caused one report of wind damage, during the evening hours of June 20, 2011.
• Damaging Winds in Alabama, June 20 to 22, 2011$110,000 · 61 kt wind · 24 eventsA warm and unstable air mass caused isolated to scattered showers and thunderstorms over several days. Some of the storms produced large hail and damaging winds.
• Damaging Wind in Minnesota, June 20, 201152 kt wind · 1 eventA thunderstorm caused wind damage at Round Lake in Nobles County on the evening of June 20th.
• Damaging Winds in Missouri, June 20, 201152 kt wind · 3 eventsA weakening squall line, caused several reports of wind damage, during the evening hours of June 20, 2011.
• Damaging Wind in Kansas, June 20, 201152 kt wind · 1 eventA line of thunderstorms moved through southeastern Kansas and into the Missouri Ozarks during the overnight hours. The storms produced isolated reports of wind damage as they moved east.
• Hail and Damaging Winds in Missouri, June 21, 2011$15,000 · 1 in hail · 3 eventsA line of thunderstorms moved out of Kansas and across the Missouri Ozarks during the overnight hours. The storms produced isolated reports of hail and wind damage as they moved east.
• Hail and Damaging Wind in Iowa, June 21, 2011$8,000 · 52 kt wind · 2 eventsThunderstorms developed well north of a stationary front that was along the Iowa/Missouri border. Some of these thunderstorms produced some damaging wind gusts during the early morning hours of June 21st in Charles City (Floyd County).
• Lightning Strike in Iowa, June 21, 2011$15,000 · 1 eventLightning struck a tree which then fell onto a car in Marengo, IA at 130 am CDT June 21. This report was relayed by KCRG-TV.
• Hail in Arkansas, June 21, 20110.75 in hail · 1 eventThunderstorms developed along and ahead of a cold front that moved into eastern Oklahoma on the evening of the 20th. These storms moved into northwestern Arkansas during the evening and early morning hours of the 21st, the strongest of which produced hail.
• Hail and Damaging Winds in Kentucky, June 21, 2011$91,000 · 3 in hail · 43 eventsDuring the late afternoon and evening hours of June 21st, numerous strong to severe thunderstorms caused widespread wind damage across a large portion of eastern KY.
• Tornadoes and Hail in Texas, June 21, 2011$1.0 million · EF0 · 16 eventsSevere thunderstorms developed in the morning, and again in the|afternoon, on Tuesday, 21 June 2011.
• Lightning Strike in Minnesota, June 21, 2011$100,000 · 1 eventA large thunderstorm complex moved northward across southern Minnesota during the morning of June 21st. A lightning strike caused over 100,000 in damage to residence in Eagan, Minnesota, around 5 am.
• Hail in Virginia, June 21, 20111 in hail · 1 eventAn isolated early morning thunderstorm produced large hail over part of Southside Virginia.
• Flash Flood and Damaging Wind in Louisiana, June 21, 201153 kt wind · 5 eventsSevere thunderstorms developed in the morning, and again in the |afternoon, on Tuesday, 21 June 2011. The thunderstorms formed after |several days of record setting hot weather, which was the result of a |persistent ridge of high pressure in the middle and upper atmosphere.
• Damaging Winds in Arkansas, June 21, 2011$2,000 · 50 kt wind · 2 eventsAn isolated severe thunderstorm affected the northwest portion of Ashley County during the early morning hours of June 21st, downing a few trees near Crossett.
• Damaging Winds and Heavy Rain in Kentucky, June 21, 2011$2,000 · 53 kt wind · 4 eventsThunderstorms moved across western Kentucky in a very moist and moderately unstable air mass. A couple of the storms reached severe levels. The storms attained some organization as a result of deep-layer shear values around 40 knots.
• Hail and Damaging Winds in Georgia, June 21, 2011$16,000 · 1 in hail · 8 eventsClusters of severe thunderstorms moved through the CSRA and produced wind damage and some hail. Damage was mainly to trees, some of which fell on homes.
• Damaging Winds and Lightning Strikes in Alabama, June 21, 20112 injured · $578,000 · 70 kt wind · 86 eventsNumerous thunderstorms developed during the mid afternoon hours in a very moist and moderately unstable air mass with moderate low to mid level wind shear. Many of the storms produced gusty to damaging winds, some in excess of 60 mph, knocking down several trees and power lines.
• Damaging Winds in Indiana, June 21, 20111 death · 1 injured · $23,000 · 56 kt wind · 5 eventsScattered thunderstorms developed across the Ohio Valley ahead of a cold front, stemming from an upper level system churning over the upper Midwest. These storms pushed northeast into central Indiana during the afternoon and early evening of the 21st of June.
• Damaging Winds in Mississippi, June 21, 2011$188,000 · 60 kt wind · 12 eventsA broken line of severe thunderstorms swept across central Mississippi during the afternoon hours of June 21st. The thunderstorms produced mainly wind damage in the form of tree damage, roof damage, and damaged power poles and lines.
• Hail and Damaging Winds in North Carolina, June 21, 2011$210,000 · 1.25 in hail · 22 eventsNumerous pulse-type thunderstorms developed over the North Carolina mountains during the early afternoon hours. The storms spread eastward as the afternoon progressed. Some of the storms produced large hail and damaging wind.
• Hail and Damaging Wind in Georgia, June 21, 20111 in hail · 2 eventsScattered, pulse-type thunderstorms developed over northeast Georgia during the afternoon hours. A few of the storms produced damaging winds and large hail.
• Flash Flood in Tennessee, June 21, 20111 eventA cold front slowly pushed into the Mid-South during the afternoon of June 21st, 2011. Showers and thunderstorms developed out ahead of the front. Some storms became severe producing flash flooding.
• Hail and Damaging Winds in North Carolina, June 21, 2011$128,000 · 1.5 in hail · 24 eventsDuring the afternoon of the 21st, a thunderstorm complex headed south through eastern Kentucky. Convection along the eastern edge of this system helped to prompt additional development farther east.
• Tornado and Flash Flood in Minnesota, June 21, 2011$600,000 · EF0 · 5 eventsStrong to severe thunderstorms developed across eastern Minnesota during the early afternoon of Tuesday, June 21st. Modest instability and a highly sheared environment, led to several funnel cloud reports across southern Minnesota.
• Flash Flooding and Hail in Virginia, June 21, 2011$323,000 · 1.75 in hail · 53 eventsDuring the afternoon of the 21st, a thunderstorm complex headed south through eastern Kentucky. Convection along the eastern edge of this system helped to prompt additional development farther east.
• Tornado and Damaging Winds in Mississippi, June 21 to 22, 20111 injured · $54,000 · EF1 · 5 eventsA cold front slowly pushed into the Mid-South during the period of June 21st-June 22nd, 2011. Showers and thunderstorms developed out ahead of the front. Some storms became severe producing damaging winds and one tornado.
• Hail and Damaging Wind in Missouri, June 21, 20111 in hail · 4 eventsA strong cold front was moving through the region, triggering showers and thunderstorms. There were numerous reports of large hail and damaging winds.
• Damaging Winds in Kentucky, June 21, 201152 kt wind · 3 eventsStrong instability during the late afternoon led to widely scattered strong storms with isolated wind damage across portions of central Kentucky.
• Tornadoes and Flash Flooding in Wisconsin, June 21, 20111 injured · $409,000 · EF1 · 16 eventsA warm front lifted into southern Wisconsin ahead of slow-moving low pressure in Iowa.
• Damaging Wind in Virginia, June 21, 2011$3,000 · 52 kt wind · 1 eventA warm front passed through the region on the twenty-first. Warm and moist air behind the boundary caused moderate amounts of instability to develop. The instability caused showers and thunderstorms to develop.
• Flash Flooding and Hail in Illinois, June 21 to 22, 20111 in hail · 24 eventsA strong cold front was moving through the region, triggering showers and thunderstorms. There were numerous reports of large hail and damaging winds.
• Damaging Wind in Louisiana, June 21, 2011$5,000 · 50 kt wind · 1 eventAn isolated severe thunderstorm produced wind damage in central Louisiana.
• Flash Flooding and Flooding in Ohio, June 21, 2011$87,000 · 1 in hail · 32 eventsAn approaching shortwave trough combined with ample instability in a warm and moist air mass across Ohio and Northern Kentucky during the afternoon.
• Damaging Winds in Louisiana, June 21, 2011$10,000 · 60 kt wind · 3 eventsA weak upper trough combined with very unstable air allowed isolated severe thunderstorms to develop during the late afternoon.
• Flash Flood and Hail in Illinois, June 21, 20112 injured · $250,000 · 78 kt wind · 7 eventsNumerous thunderstorms moved across southern Illinois in a very moist and moderately unstable air mass.
• Damaging Winds in Virginia, June 21, 2011$4,000 · 50 kt wind · 2 eventsScattered severe thunderstorms associated with a weak trough produced damaging winds across portions of central Virginia.
• Flash Flooding and Flooding in Michigan, June 21 to 22, 20114 injured · $1.5 million · 2 in hail · 22 eventsA warm front moved north across southern and central lower Michigan during the day of June 21st, allowing a much warmer and very humid airmass to advect into the area.
• Flash Flooding and Damaging Winds in Illinois, June 21 to 22, 2011$698,000 · 61 kt wind · 39 eventsSevere thunderstorms developed along an advancing cold front during the late afternoon and evening of June 21st. Wind gusts of 60 to 70 mph brought numerous trees and power lines down across much of the area.
• Damaging Winds in Tennessee, June 21, 2011$14,000 · 52 kt wind · 5 eventsA large area of rain with scattered thunderstorms affected Middle Tennessee during the afternoon hours on June 21. A few storms became severe with several reports of wind damage received.
• Flash Flood and Hail in Kentucky, June 21, 2011$1,000 · 1 in hail · 2 eventsAn approaching shortwave trough combined with ample instability in a warm and moist air mass across Ohio and Northern Kentucky during the afternoon.
• Hail and Damaging Winds in West Virginia, June 21, 20111 injured · $23,000 · 1 in hail · 9 eventsThunderstorms developed over southern West Virginia and eastern Kentucky during the heat and humidity of this June afternoon. The storms moved northeast into southeast Ohio by the early evening. Despite the high freezing level, some large hail still occurred.
• Damaging Wind in Kentucky, June 21, 2011$5,000 · 50 kt wind · 1 eventThunderstorms developed over southern West Virginia and eastern Kentucky during the heat and humidity of this June afternoon. The rapid temperature drop from near 90 to 70 degrees helped produced some damaging wind gusts.
• Hail and Damaging Winds in Ohio, June 21, 2011$83,000 · 1.75 in hail · 11 eventsThunderstorms developed over southern West Virginia and eastern Kentucky during the heat and humidity of this June afternoon. The storms moved northeast into southeast Ohio by the early evening. Despite the high freezing level, some large hail still occurred.
• Flash Flooding and Hail in North Carolina, June 21 to 22, 20111.75 in hail · 26 eventsStrong to severe thunderstorms developed along the northern periphery of the strong upper level ridge as strong daytime heating resulted in moderate instability across the area.
• Damaging Winds in Georgia, June 21, 2011$19,000 · 50 kt wind · 4 eventsA vigorous closed upper low was moving from the Midwest into the Ohio Valley during the period of June 21st through the 23rd. A slow moving cold front accompanied this system and was draped from Oklahoma into Ohio.
• Hail in West Virginia, June 21, 20111.25 in hail · 3 eventsA warm front passed through the region on the twenty-first. Warm and moist air behind the boundary caused moderate amounts of instability to develop. The instability caused showers and thunderstorms to develop.
• Damaging Winds in Tennessee, June 21, 2011$315,000 · 60 kt wind · 20 eventsA boundary across the area triggered thunderstorms during the evening hours. Many of the storms reported damaging thunderstorm wind.
• Damaging Winds in Indiana, June 21, 201155 kt wind · 7 eventsLow pressure was located over northwestern Iowa with a warm front well north into Michigan. The main upper level jet energy remained west of the area. The environment consisted of strong instability, with surface based CAPE in excess of 500 j/kg and low shear.
• Hail and Damaging Winds in Ohio, June 21, 201155 kt wind · 4 eventsLow pressure was located over northwestern Iowa with a warm front well north into Michigan. The main upper level jet energy remained west of the area. The environment consisted of strong instability, with surface based CAPE in excess of 500 j/kg and low shear.
• Flash Flood and Hail in West Virginia, June 21, 2011$86,000 · 1 in hail · 9 eventsDuring the afternoon of the 21st, a thunderstorm complex headed south through eastern Kentucky. Convection along the eastern edge of this system helped to prompt additional development farther east.
• Damaging Winds in Michigan, June 21, 201155 kt wind · 8 eventsLow pressure was located over northwestern Iowa with a warm front well north into Michigan. The main upper level jet energy remained west of the area. The environment consisted of strong instability, with surface based CAPE in excess of 500 j/kg and low shear.
• Hail in Florida, June 21, 20110.75 in hail · 1 eventAn afternoon seabreeze developed along the coast and scattered thunderstorms formed along the boundary. One storm produced hail.
• Hail and Damaging Winds in South Carolina, June 21, 20112 injured · $5,000 · 1 in hail · 20 eventsPulse storms consolidated into a few multicell clusters late in the afternoon and produced areas of wind damage and large hail as they moved across the upstate.
• Hail and Damaging Winds in Texas, June 21 to 22, 2011$226,000 · 1.75 in hail · 31 eventsSupercell thunderstorms developed in the afternoon hours along a dryline in the western portions of north Texas as a strong upper trough moved through the region.
• Hail and Damaging Winds in Texas, June 21, 20112 in hail · 13 eventsA weak cold front moved into the area with scattered strong to severe thunderstorms developing along and ahead of it. Strong winds and large hail were the main hazards as these storms tracked south across much of West Central Texas.
• Hail and Damaging Winds in Illinois, June 21, 2011$50,000 · 61 kt wind · 5 eventsA storm system centered over southern Minnesota pushed a cold front into western Illinois during the evening of June 21. A line of severe thunderstorms developed across western Illinois during the late afternoon and evening bringing damaging winds, heavy rain, and small hail.
• Hail and Damaging Winds in Ohio, June 21, 2011$131,000 · 1.25 in hail · 15 eventsShowers and thunderstorms fired up during the early evening hours of June 21st due to several factors. A frontal boundary was located along the Lake Erie shoreline and a cold front was located off to the west.
• Tornadoes and Flooding in Illinois, June 21, 20112 injured · $2.5 million · EF1 · 80 eventsA powerful line of severe thunderstorms moved northeast across northern Illinois during the evening hours of June 21st producing damaging winds and widespread wind damage.
• Hail in Texas, June 21, 20111.75 in hail · 5 eventsA cold front provided a focus for scattered thunderstorm development through the evening hours. Steep mid level lapse rates and modest deep layer shear resulted in several large hail reports across west Texas, as a minor mid level shortwave trough passed overhead.
• Flash Flooding and Hail in Michigan, June 21 to 22, 2011$28,000 · 70 kt wind · 21 eventsA batch of thunderstorms moving through during the evening hours produced scatter wind damage across southeast Michigan, along with flash flooding over Saginaw Bay and St. Clair counties where over 3 inches of rain fell in a short period.
• Flash Flood and Hail in Arkansas, June 21 to 22, 2011$10,000 · 1 in hail · 2 eventsThe arrival of a cold front in Arkansas triggered isolated severe weather and flash flooding in the western part of the state.
• Damaging Winds in Ohio, June 21, 2011$25,000 · 50 kt wind · 2 eventsScattered thunderstorms developed along a stalled frontal boundary and a few of these became severe.
• Damaging Winds in Alabama, June 21 to 24, 2011$15,000 · 52 kt wind · 3 eventsThunderstorms produced high winds that caused damage in southwest Alabama.
• Damaging Winds in Virginia, June 21, 2011$18,000 · 55 kt wind · 4 eventsA boundary across the area triggered thunderstorms during the evening hours. A few of the storms produced damaging thunderstorm wind.
• Hail in Pennsylvania, June 21, 20111 in hail · 3 eventsScattered thunderstorms developed along a stalled frontal boundary and a few of these became severe.
• Damaging Wind in New York, June 21, 2011$20,000 · 52 kt wind · 1 eventA warm front lifting north from the Ohio valley produced an isolated severe thunderstorm that moved over southern Erie County. The thunderstorms winds of up to 60 mph blew down trees and knocked out power to a barn in Lawtons, just west of Springville.
• Flash Flood in Michigan, June 21 to 22, 2011$18,000 · 1 eventBands of training thunderstorms affected parts of Northwest and North Central Lower Michigan. Locally very heavy rain occurred in a few spots, including between Manistee and Cadillac. The only flooding occurred in the Cross Village area of Emmet County.
• Damaging Winds in South Carolina, June 21, 2011$4,000 · 50 kt wind · 4 eventsLarge clusters of strong to severe thunderstorms merged into one huge cluster of thunderstorms. This cluster moved south and into Marlboro County during the late evening hours.
• Damaging Wind in Maryland, June 22, 201152 kt wind · 1 eventStrong to locally severe thunderstorms moved through the central Eastern Shore during the early morning of the 22nd. A surface trough acted as a trigger to the thunderstorms earlier that night.
• Damaging Winds in Florida, June 22, 201150 kt wind · 2 eventsScattered afternoon and evening storms fired across inland northeast Florida due to the sea breezes and outflow boundaries.
• Flash Flooding in North Dakota, June 22, 2011$6.0 million · 2 eventsRunoff from very heavy rain resulted in a rapid four foot rise along the Souris River near Sherwood. A mandatory evacuation was ordered for Mouse River Park located in McKinney Township. One hundred homes, 150 camping sites, and several businesses and buildings were impacted.
• Damaging Wind in Mississippi, June 22, 2011$25,000 · 50 kt wind · 1 eventAn isolated severe storm moved over Jones County during the early afternoon causing damage near Sandersville.
• Hail in Michigan, June 22, 20111 in hail · 1 eventA trained spotter in Ovid reported that a severe thunderstorm produced one inch diameter hail and that several tree branches were also blown down.
• Tornado and Damaging Winds in Michigan, June 22, 2011$27,000 · EF0 · 4 eventsA line of thunderstorms lifted northward, along a warm front extending east from a low in Minnesota. The line produced a few spots of wind damage and one tornado. A weak shower behind the line also managed to produce a funnel.
• Hail and Damaging Winds in Alabama, June 22 to 24, 2011$29,000 · 1 in hail · 8 eventsNumerous thunderstorms erupted during the early afternoon hours along a weak cool front and with the passage of an upper level disturbance in northwest flow aloft. The airmass became very unstable with dew points in the lower 70s.
• Flash Flood and Damaging Wind in Texas, June 22 to 23, 2011$40,000 · 57 kt wind · 7 eventsAn upper level disturbance, sandwiched between a receding upper level ridge across the southwest U.S. and another ridge across Florida and the eastern Gulf of Mexico, drew deep tropical moisture northward from the Bay of Campeche and points south.
• Damaging Winds in Pennsylvania, June 22, 2011$25,000 · 52 kt wind · 3 eventsA weak surface trough acted as a trigger to scattered strong to severe thunderstorms that developed across southeast Pennsylvania during the second half of the afternoon on the 22nd.
• Damaging Winds in Alabama, June 22, 2011$36,000 · 56 kt wind · 9 eventsA quasi-linear convective system developed in Mississippi during the early afternoon hours, then progressed east-northeast into northern Alabama.
• Hail and Damaging Winds in New Jersey, June 22, 20111 death · 2 injured · $100,000 · 1.75 in hail · 11 eventsA weak surface trough acted as a trigger to scattered strong to severe thunderstorms that developed across central and northern New Jersey during the second half of the afternoon on the 22nd. There was one storm related death in Ocean County.
• Flash Flooding in New York, June 22, 2011$10,000 · 2 eventsShowers and thunderstorms developed in the warm sector south of a warm front. These storms were slow moving and produced heavy rainfall. Isolated areas of flash flooding occurred across central New York.
• Damaging Winds in Georgia, June 22, 2011$158,000 · 52 kt wind · 10 eventsA vigorous closed upper low continued to move across the mid-latitudes of the U.S. from the western Ohio and Tennessee Valleys to the eastern Ohio and Tennessee Valleys and the Mid-Atlantic.
• Damaging Winds in North Carolina, June 22, 201150 kt wind · 3 eventsIsolated thunderstorms developed across the sandhills and southern coastal plain as a weak upper level disturbance combined with a moderately unstable air mass (which resulted from strong insolation and dewpoints in the mid/upper 60s to lower 70s).
• Damaging Wind in Ohio, June 22, 201155 kt wind · 1 eventLow pressure drifted slowly east out of the eastern Plains into the area. A cold front swept in during the afternoon and evening. Instability increased ahead of the front, but was hampered by extensive cloud cover for much of the day.
• Damaging Winds in Georgia, June 22, 201155 kt wind · 4 eventsAn MCS moved across northeast Georgia during the late afternoon hours. While the wind shear wasn't strong over the region, steep low level lapse rates resulted in a high downdraft CAPE (DCAPE) environment and the line of storms was accompanied by damaging winds.
• Hail and Damaging Winds in North Carolina, June 22, 2011$24,000 · 1.75 in hail · 8 eventsTwo clusters of thunderstorms developed late in the afternoon and strengthened to severe levels before merging into one entity and weakening early in the evening.
• Damaging Winds in South Carolina, June 22, 201155 kt wind · 9 eventsAn MCS moved out of northeast Georgia and into the western Upstate during the early evening hours. While the wind shear wasn't strong over the region, steep low level lapse rates resulted in a high downdraft CAPE (DCAPE) environment.
• Damaging Winds in North Carolina, June 22, 201155 kt wind · 11 eventsA weak MCS moved out of upstate South Carolina and into the foothills and piedmont of western North Carolina during the evening hours. Steep low level lapse rates resulted in a high downdraft CAPE (DCAPE) environment.
• Tornado and Damaging Winds in Tennessee, June 22, 2011$11,000 · EF0 · 4 eventsIsolated thunderstorm developed along a boundary during the evening hours. There were a few reports of damaging thunderstorm wind. In addition an EF-0 tornado touched down briefly in Loudon Co.
• Hail and Damaging Winds in North Carolina, June 22, 201150 kt wind · 10 eventsA weak cold front remained west of eastern North Carolina on June 22nd, 2011. A few showers and thunderstorms produced damaging wind gusts across Duplin and Lenoir Counties.
• Tornado in Indiana, June 22, 2011$5,000 · EF0 · 1 eventA cold front associated with a vigorous closed low over the Upper Midwest approached the Ohio River during the late afternoon. Several storms developed to the west of Louisville during the late afternoon hours.
• Hail and Damaging Winds in Oregon, June 22, 20111 in hail · 8 eventsAn unstable atmosphere ahead of an upper level trough produced severe thunderstorms during the late afternoon and early evening.
• Tornadoes and Flash Flood in Kentucky, June 22, 2011$800,000 · EF2 · 8 eventsA deep occluded closed low across the Upper Midwest brought a cold front and wind shift along the Ohio River during the early evening hours on June 22nd.
• Hail in New York, June 22, 2011$8,000 · 1.25 in hail · 1 eventEvening convection developed near the Lake Ontario lake breeze. One thunderstorm in particular produced hail up to 1.25 inches near Gorham.
• Hail in Idaho, June 22, 20111 in hail · 1 eventThe southern and central portions of the Idaho Panhandle was under an unstable and active weather pattern as a cold upper level trough approached from the west and warm, moist air streamed across the area from the southwest.
• Hail in Washington, June 22, 20111.75 in hail · 1 eventSoutheastern Washington was under an unstable and active weather pattern as a cold upper level trough approached from the west and warm, moist air streamed across the area from the southwest.
• Damaging Wind in New York, June 23, 2011$20,000 · 60 kt wind · 1 eventA line of thunderstorm developed in a southwest flow of moist, unstable air. The thunderstorms bowed across Livingston county producing wind gusts to 60 mph. The winds downed several trees near Lakeville. One of the trees fell onto a house resulting in moderate structural damage.
• Flash Flooding and Damaging Wind in New York, June 23, 2011$111,000 · 50 kt wind · 3 eventsShowers and thunderstorms will heavy rainfall developed across parts of central New York. Some of the storms occurred in areas that had already received heavy rainfall the previous day.
• Damaging Winds in Pennsylvania, June 23, 201156 kt wind · 2 eventsStrong to severe thunderstorms formed along a nearly stationary frontal boundary and moved across the Poconos during the morning of the 23rd.
• Hail and Damaging Wind in New Jersey, June 23, 20111 in hail · 2 eventsStrong to severe thunderstorms formed near a stationary frontal boundary during the morning of the 23rd across northwest New Jersey. About 1,000 homes and businesses lost power from the combination of lightning and wind, mainly in Sussex County.
• Flash Flooding and Flood in New Jersey, June 23, 20116 eventsWaves of low pressure riding along a nearly stationary frontal boundary across the local area caused several rounds of thunderstorms, which resulted in flash flooding throughout Northeast New Jersey.
• Hail and Damaging Wind in New York, June 23, 2011$750 · 1.75 in hail · 2 eventsA passing upper level disturbance interacted with a nearby stationary front to produce isolated severe weather in Rockland and Westchester Counties.
• Flash Flooding in New York, June 23, 20118 eventsWaves of low pressure riding along a nearly stationary frontal boundary across the local area caused several rounds of thunderstorms, which resulted in flash flooding in portions of The Lower Hudson Valley and Long Island.
• Flash Flooding in New Jersey, June 23, 20112 eventsIn addition to the severe weather, thunderstorms moved over similar locations in Sussex and Northwestern Morris Counties and caused flash flooding of smaller streams. Event precipitation totals averaged 2 to 4.5 inches.
• Damaging Wind in Connecticut, June 23, 20111 death · 2 injured · $8,000 · 1 eventA passing upper level disturbance interacted with a nearby stationary front to produce an isolated strong thunderstorm, whose strong winds and heavy rainfall combined to bring a tree down on a car in Fairfield County, killing the occupant.
• Damaging Winds in Kentucky, June 23, 2011$58,000 · 55 kt wind · 2 eventsAn isolated severe thunderstorm brought down numerous trees in the Mt Sterling area on June 23rd. One home, two barns, and several power lines were also damaged by the winds and falling trees.
• Hail and Damaging Winds in Kentucky, June 23, 2011$68,000 · 1 in hail · 5 eventsScattered strong to severe thunderstorms produced tree damage and heavy rain in Montgomery, Clay, Morgan, and Johnson counties during the afternoon and evening hours of June 23rd.
• Flash Flooding in Connecticut, June 23, 20114 eventsWaves of low pressure riding along a nearly stationary frontal boundary across the local area caused several rounds of thunderstorms, which resulted in flash flooding in portions of Southern Connecticut.
• Hail and Damaging Winds in South Carolina, June 23, 2011$13,000 · 1 in hail · 7 eventsScattered severe thunderstorms produced some wind damage to mainly trees and some large hail over areas of the Midlands.
• Hail and Damaging Winds in Georgia, June 23, 2011$3,000 · 52 kt wind · 10 eventsA moist and unstable southwest upper level flow focused the west coast sea breeze inland through the day then merged with the east coast sea breeze across the eastern portion of the forecast area during the late afternoon. Scattered severe storms developed.
• Hail and Damaging Winds in Florida, June 23, 201152 kt wind · 8 eventsA moist and unstable southwest upper level flow focused the west coast sea breeze inland through the day then merged with the east coast sea breeze across the eastern portion of the forecast area during the late afternoon. Scattered severe storms developed.
• Hail in Montana, June 23, 2011$5,000 · 1.25 in hail · 3 eventsA severe thunderstorm watch was in effect for the late afternoon into evening. A cold front moved across western Montana with a very moist and unstable air mass. The cold front added lift to the unstable air mass, which produced hail and gusty winds.
• Damaging Winds in Ohio, June 23, 2011$25,000 · 50 kt wind · 2 eventsA slow moving cold front moving southeast across the Upper Ohio valley produced scattered severe thunderstorms.
• Hail and Damaging Winds in Kentucky, June 23, 2011$17,000 · 50 kt wind · 6 eventsDuring the afternoon on the 23rd, a broken line of convection formed in southeast Ohio ahead of a slow moving cold front. This convection eventually extended south into northeast Kentucky.
• Hail and Damaging Winds in West Virginia, June 23, 2011$52,000 · 70 kt wind · 6 eventsDuring the afternoon on the 23rd, a broken line of convection formed in southeast Ohio ahead of a slow moving cold front. This convection eventually extended south into northeast Kentucky and moved into West Virginia.
• Hail and Damaging Winds in Ohio, June 23, 2011$2,000 · 50 kt wind · 4 eventsDuring the afternoon on the 23rd, a broken line of convection formed in southeast Ohio ahead of a slow moving cold front. Dry air in the mid levels, as well as deep layer undirectional shear, lent toward a damaging wind threat as opposed to large hail.
• Hail and Damaging Winds in South Carolina, June 23, 2011$64,000 · 1.25 in hail · 20 eventsClusters of thunderstorms developed ahead of a mid-level trough and very quickly turned severe as they increased in coverage during the mid and late afternoon. Several storm mergers and storm-boundary interactions were observed through radar interrogation.
• Damaging Winds in North Carolina, June 23, 201150 kt wind · 7 eventsThunderstorms developed across the Sandhills and southern Coastal Plain in a moderately unstable air mass as a weak upper level disturbance tracked over the region. The strongest storms blew several trees down across the area.
• Hail and Damaging Winds in North Carolina, June 23, 2011$46,000 · 1 in hail · 8 eventsClusters of thunderstorms developed ahead of a mid-level trough and very quickly turned severe as they increased in coverage during the afternoon and evening. Several storm mergers and storm-boundary interactions were observed through radar interrogation.
• Damaging Wind in Pennsylvania, June 23, 2011$10,000 · 50 kt wind · 1 eventA slow moving cold front moving southeast across the Upper Ohio valley produced scattered severe thunderstorms.
• Damaging Winds in Florida, June 23, 2011$6,000 · 53 kt wind · 3 eventsDeep moisture in place allowed for numerous thunderstorms to develop along afternoon seabreeze and outflow boundaries. Some storms contained strong and damaging winds.
• Hail and Damaging Winds in Georgia, June 23, 2011$15,000 · 50 kt wind · 9 eventsClusters of thunderstorms developed near a long-wave trough east of Georgia. Thunderstorms became strong as they entered an unstable environment featuring MLCAPE between 2000-2500 J/KG and DCAPE over 1000 J/KG.
• Damaging Winds in Tennessee, June 23, 2011$18,000 · 52 kt wind · 3 eventsIsolated severe thunderstorms developed during the afternoon hours of June 23 over northern areas of the Cumberland Plateau. A few reports of wind damage were received.
• Hail and Damaging Winds in Montana, June 23, 20111.75 in hail · 5 eventsLate afternoon thunderstorms over portions of North Central Montana became severe during the late afternoon. Hail the size of golf balls and wind gusts in excess of 60 mph were reported.
• Damaging Winds in Georgia, June 23, 2011$14,000 · 55 kt wind · 4 eventsA moist and unstable air mass combined with a weak upper level trough to produce severe weather across south-central Georgia.
• Hail and Damaging Winds in North Carolina, June 23, 20111 in hail · 20 eventsA weak cold front was centered west of eastern North Carolina on June 23, 2011. Showers and thunderstorms developed ahead of the front during the afternoon hours. Some thunderstorms produced hail and damaging wind gusts from the Coastal Plain to the Coast.
• Damaging Winds in South Carolina, June 23, 2011$14,000 · 55 kt wind · 9 eventsClusters of thunderstorms developed near a long-wave trough east of South Carolina. Thunderstorms became strong as they entered an unstable environment featuring MLCAPE between 2000-2500 J/KG and DCAPE over 1000 J/KG.
• Tornadoes and Flash Flooding in Tennessee, June 23 to 24, 2011$185,000 · EF1 · 13 eventsScattered thunderstorms developed along a boundary during the evening hours and even continued into the overnight hours. Storm reports were varied and ranged from two tornadoes as well damaging thunderstorm wind. Flooding was also reported.

Every billion-dollar disasterEvery storm of 2011Tornadoes in 2011

NOAA NCEI, U.S. Billion-Dollar Weather and Climate Disasters (2025), https://doi.org/10.25921/stkw-7w73, and the Storm Events Database for the episodes.