Midwest/Southeast Severe Weather

Losses, 2024 dollars

$1.6 billion

Losses at the time

$1.2 billion

Deaths

0

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.

• Damaging Wind in Wyoming, August 15, 201152 kt wind · 1 eventWind gusts to 60 mph accompanied a severe thunderstorm over northwestern Campbell County.
• Damaging Winds in Wyoming, August 15, 201155 kt wind · 2 eventsStrong outflow winds from dissipating evening thunderstorms produced wind gusts to 63 mph in central Carbon County.
• Damaging Winds in South Dakota, August 15, 201167 kt wind · 2 eventsA severe thunderstorm produced wind gusts around 75 mph across portions of far northwestern South Dakota.
• Damaging Winds in Montana, August 15, 201156 kt wind · 2 eventsA very unstable air mass collided with a cold front and a low pressure trough at the surface to produce severe thunderstorms.
• Hail and Damaging Winds in South Dakota, August 15, 201153 kt wind · 3 eventsA couple isolated thunderstorms brought some nickel hail and sixty mph winds to parts of Corson county.
• Damaging Wind in U.S. Virgin Islands, August 16, 2011$7,000 · 1 eventA tropical wave that moved across the Caribbean Waters brought near severe weather to Saint Croix. Strong thunderstorms with very gusty winds were observed with wind gusts of 47 mph in Saint Croix during the early afternoon.
• Hail and Damaging Wind in Colorado, August 16, 201162 kt wind · 2 eventsA severe thunderstorm produced a wind gust to 71 mph near Fairplay.
• Damaging Wind in Florida, August 16, 201151 kt wind · 1 eventWinds in excess of 50 knots occurred at Vero Beach as a boundary induced storm moved through with the enhancement of an upper level trough.
• Hail in Utah, August 16, 20111 in hail · 1 eventIsolated severe thunderstorms occurred under a persistent moist flow into Eastern Utah around the sub tropical high over the Southwest.
• Hail in Colorado, August 16, 2011$50,000 · 1.75 in hail · 1 eventIsolated severe thunderstorms occurred under a persistent moist flow into Western Colorado around the sub tropical high over the Southwest.
• Hail in New York, August 16, 20111 in hail · 1 eventA cold and unstable upper atmospheric area of low pressure moved across southern Quebec, while temperatures reached the upper 70s to lower 80s across southern Quebec and portions of northern New York.
• Lightning Strike in Florida, August 16, 20118 injured · 1 eventEight people were indirectly struck and injured by a lightning strike during a non-severe thunderstorm. Five of the individuals were water park staff, and three were park guests.
• Damaging Winds in Oklahoma, August 16, 2011$100 · 58 kt wind · 2 eventsA weak cold front entered northwest Oklahoma late in the afternoon of the 16th, as a mid level storms system swung east through the central and southern Plain states. Thunderstorms developed along the front, with additional development along generated outflow boundaries.
• Flash Flooding and Heavy Rain in Minnesota, August 16 to 17, 2011$755,000 · 8 eventsThunderstorms developed across western Minnesota the afternoon of Tuesday, August 16th. These thunderstorms continued to develop eastward across central Minnesota, and into east central Minnesota, and west central Wisconsin.
• Flash Flooding and Damaging Wind in Arizona, August 16, 20111 injured · $275,000 · 60 kt wind · 4 eventsAbundant moisture and a mesoscale convective vortex from overnight storms in Sonora, Mexico were the focus for thunderstorm development. Some of the storms produced strong winds and heavy rainfall, including a microburst in Marana.
• Damaging Wind in Texas, August 16, 2011$10,000 · 50 kt wind · 1 eventA rare cold front in southeast Texas helped produce some thunderstorms, one of which produced damaging winds.
• Damaging Winds in Kansas, August 16, 201160 kt wind · 2 eventsA few severe thunderstorms moved out of eastern Colorado during the last night hours.
• Flash Flooding and Damaging Wind in Arizona, August 17, 201154 kt wind · 4 eventsAbundant moisture, favorable flow, and an outflow boundary from storms over Sonora, Mexico resulted in scattered showers and thunderstorms. Some of the storms produced heavy rainfall and strong winds.
• Flash Flood and Damaging Wind in Texas, August 17, 201152 kt wind · 2 eventsA broad upper high was centered over New Mexico with weak flow throughout the atmosphere allowing for slow moving thunderstorms that produce heavy rain. A severe wind gust was reported in El Paso as well.
• Hail and Damaging Wind in South Dakota, August 17, 2011$570,000 · 2.75 in hail · 10 eventsA supercell thunderstorm developed over Haakon County and moved southeast; producing large hail across northeastern Jackson, Mellette, eastern Todd, and Tripp Counties.
• Hail in South Dakota, August 17, 20111.75 in hail · 1 eventA severe thunderstorm produced golf ball sized hail south of Mission.
• Hail in South Dakota, August 17, 2011$50,000 · 1.75 in hail · 5 eventsA supercell thunderstorm developed over Mellette County and moved southeastward, producing large hail across portions of Mellette and Tripp Counties.
• Hail in South Dakota, August 17, 20110.88 in hail · 1 eventA thunderstorm dropped nickel hail in Jones County.
• Hail and Damaging Winds in Kansas, August 17, 201161 kt wind · 6 eventsSignificant wind event moves across South Central Kansas causing widespread damage due to 70 to 75 mph winds.
• Hail in South Dakota, August 17, 20111 in hail · 1 eventA severe thunderstorm developed over southeastern Haakon County and produced quarter sized hail southeast of Midland.
• Damaging Wind in Colorado, August 17, 201152 kt wind · 1 eventA severe thunderstorm produces thunderstorm wind gusts up to 60 mph at times over portions of Kiowa county.
• Hail in North Dakota, August 18, 20111 in hail · 1 eventA thunderstorm flared up early in the morning of the 18th, producing large hail near Brantford.
• Hail and Damaging Winds in South Dakota, August 18, 2011$2.5 million · 1.75 in hail · 17 eventsThunderstorms produced large hail at numerous locations in southeast South Dakota, south of Interstate 90, on August 18th, mostly during the late morning and afternoon. There were also a few reports of damaging thunderstorm winds.
• Damaging Wind and Lightning Strike in Kentucky, August 18, 2011$4,000 · 52 kt wind · 2 eventsIsolated slow moving storms brought localized heavy rain and a couple of reports of wind damage during the pre-dawn hours on August 18th.
• Hail and Damaging Winds in Missouri, August 18 to 20, 2011$66,000 · 2.75 in hail · 21 eventsA weak surface front across the Ozarks interacted with several upper level disturbances moving across the region. Several rounds of strong to severe storms occurred as a couple of mesoscale convective system were produced.
• Hail in Tennessee, August 18, 20111 in hail · 1 eventA mesoscale convective complex developed over Southern Missouri during the early morning hours of August 18th, 2011. Thunderstorms associated with the complex moved into the Mid-South during the morning. Some storms remained severe producing large hail.
• Tornado in North Carolina, August 18, 2011$3,000 · EF0 · 1 eventAn inverted surface trough just offshore coupled with light winds and early morning instability resulted in the development of several waterspouts. One of these waterspouts did move onto the coast as a weak tornado.
• Hail and Damaging Wind in New York, August 18, 2011$15,000 · 52 kt wind · 2 eventsA weak frontal system brought thunderstorms to the region. A thunderstorm near Gasport, Niagara County, produced a wind gust to 60 mph which downed a tree that blocked a road. In Albion, Orleans County, hail up to three-quarter inch fell.
• Tornado and Flash Flood in Nebraska, August 18, 20113 injured · $6,000 · EF0 · 51 eventsConditions became moderately to highly unstable across eastern Nebraska and southwest Iowa by early afternoon on August 18th ahead of a weak slow moving cold front that was driven southeast by a weak upper level disturbance.
• Flash Flooding in Arizona, August 18, 2011$20,000 · 2 eventsThunderstorms with heavy rain caused flash flooding in the Wallow Burn area near Nutrioso.
• Hail and Damaging Winds in Virginia, August 18, 2011$1,000 · 1.75 in hail · 8 eventsAn approaching upper level storm system embedded in the northwest flow aloft, along with low level moisture convergence and daytime heating, triggered thunderstorm development in the early afternoon.
• Damaging Winds in Mississippi, August 18, 2011$160,000 · 60 kt wind · 10 eventsA hot humid air mass, combined with daytime heating, allowed a few strong to severe thunderstorms to develop and move south across portions of central Mississippi during the afternoon hours of August eighteenth.
• Flash Flooding and Hail in Utah, August 18 to 22, 20111 death · 1 injured · 0.75 in hail · 9 eventsThe flash flooding threat began again in the middle of the month, with the largest flash floods in Capitol Reef National Park and along the Escalante River. Isolated large hail was reported with a couple of storms, and cloud-to-ground lightning struck a couple individuals.
• Flash Flood and Hail in North Carolina, August 18, 2011$600 · 1 in hail · 5 eventsAn approaching upper level storm system embedded in the northwest flow aloft, along with low level moisture convergence and daytime heating, triggered thunderstorm development in the early afternoon. A few of these storms brought hail up to quarter size and damaging winds.
• Hail and Damaging Winds in Iowa, August 18, 20115 injured · 3 in hail · 32 eventsConditions became moderately to highly unstable across eastern Nebraska and southwest Iowa by early afternoon on August 18th ahead of a weak slow moving cold front that was driven southeast by a weak upper level disturbance.
• Hail in Iowa, August 18, 2011$20,000 · 1.75 in hail · 1 eventA thunderstorm produced golf ball size hail at Danbury in Woodbury County in northwest Iowa on the afternoon of August 18th.
• Hail in New York, August 18, 20110.88 in hail · 1 eventA weak frontal boundary moved across east central New York Thursday afternoon, August 18th, triggering showers and thunderstorms. One thunderstorm produced nickel size hail in Albany County.
• Damaging Wind in Texas, August 18, 2011$50,000 · 57 kt wind · 1 eventStrong to severe thunderstorms developed in the afternoon along the east side of the upper ridge and to the south of a surface boundary that extended basically just south of a Broken Bow, Oklahoma to Texarkana, Arkansas to Monroe, Louisiana.
• Hail and Damaging Winds in Illinois, August 18, 20111.75 in hail · 4 eventsIsolated to scattered thunderstorms developed over southern Illinois during the heat of the afternoon. Surface mesoanalysis depicted a weak front draped across portions of west central Illinois into southern Missouri, with an attendant mesolow over east central Missouri.
• Damaging Wind in Kentucky, August 18, 2011$90,000 · 56 kt wind · 1 eventIsolated to scattered thunderstorms developed over western Kentucky during the heat of the afternoon. Surface mesoanalysis depicted a weak front draped across portions of west central Illinois into southern Missouri, with an attendant mesolow over east central Missouri.
• Hail and Damaging Winds in Kentucky, August 18, 2011$15,000 · 1 in hail · 4 eventsScattered severe storms during the afternoon and evening hours on August 18th brought localized wind damage and one report of large hail.
• Damaging Winds in Louisiana, August 18, 201158 kt wind · 5 eventsStrong to severe thunderstorms developed in the afternoon along the east side of the upper ridge and to the south of a surface boundary that extended basically just south of a Broken Bow, Oklahoma to Texarkana, Arkansas to Monroe, Louisiana.
• Hail and Damaging Winds in Tennessee, August 18, 2011$5,000 · 1 in hail · 5 eventsScattered thunderstorms moved southward out of Kentucky during the afternoon and evening hours. A few storms became severe with wind damage and large hail reported.
• Hail and Damaging Winds in Maryland, August 18, 20111 injured · $28,000 · 2.25 in hail · 38 eventsA southerly flow around high pressure off the east coast produced hot and humid conditions. The hot and humid conditions combined with colder air aloft associated with an upper-level trough to produce moderate amounts of instability.
• Hail in Virginia, August 18, 20111 in hail · 1 eventA boundary lingering across area triggered thunderstorms during the afternoon hours as the instability increased. One of the storms produced quarter-size hail.
• Hail in Indiana, August 18, 20110.75 in hail · 1 eventIsolated to scattered thunderstorms developed over southwest Indiana during the heat of the afternoon. Surface mesoanalysis depicted a weak front draped across portions of west central Illinois into southern Missouri, with an attendant mesolow over east central Missouri.
• Flash Flood and Hail in Nebraska, August 18, 2011$435,000 · 4.25 in hail · 18 eventsLarge hail caused widespread crop and property damage in most of Dixon and Dakota Counties in extreme northeast Nebraska during the afternoon of August 18th. There were also reports of damaging winds, and one report of flash flooding as the evening began.
• Hail in Indiana, August 18, 20111 in hail · 1 eventScattered thunderstorms pushed across the southern half of Indiana during the afternoon of August the 18th. While coverage of these storms were limited, one of them did produce one report of large hail.
• Flash Flood in Maryland, August 18, 20111 eventIsolated thunderstorms developed across Maryland when an upper level disturbance tracked across a moist and unstable atmosphere. High rainfall rates over Anne Arundel County cased an isolated flash flood.
• Hail in South Dakota, August 18, 20111.75 in hail · 7 eventsSevere thunderstorms brought large hail up to the size of golfballs to parts of north central South Dakota.
• Hail and Damaging Winds in New Jersey, August 18 to 19, 2011$2,000 · 1 in hail · 10 eventsAn upper air disturbance coupled with a surface trough helped trigger strong to locally severe thunderstorms from the late afternoon through the night in New Jersey.
• Hail in Michigan, August 18, 20110.88 in hail · 2 eventsTwo thunderstorms produced dime size hail over eastern Wayne county.
• Tornadoes and Hail in Nebraska, August 18, 2011EF0 · 22 eventsSeveral intense severe thunderstorms developed on the afternoon of August 18th over north central Nebraska. These storms became anchored on a boundary which resulted in slow storm motions and enhanced the rotation in the storms.
• Hail and Damaging Winds in Virginia, August 18, 2011$9,000 · 1.75 in hail · 17 eventsA southerly flow around high pressure off the east coast produced hot and humid conditions. The hot and humid conditions combined with colder air aloft associated with an upper-level trough to produce moderate amounts of instability.
• Tornado and Hail in North Carolina, August 18, 2011$500,000 · EF0 · 7 eventsA few thunderstorms developed over western North Carolina during the afternoon hours. One of the storms briefly took on supercell characteristics, despite weak wind shear, and produced a brief tornado.
• Damaging Wind in Mississippi, August 18, 2011$1,000 · 55 kt wind · 1 eventA stationary front provided a focus for scattered thunderstorms to develop. One report of severe weather was received.
• Hail in North Dakota, August 18, 20111 in hail · 1 eventA severe thunderstorm moving near the North Dakota and South Dakota border produced one report of large hail in Sioux County. Severe Thunderstorm Watch number 786 was in effect for this event.
• Hail in Ohio, August 18, 20110.75 in hail · 1 eventA weak trough moved through the region, sparking thunderstorms across portions of northwest Ohio. A few of the storms produced hail to the size of dimes.
• Hail in Maryland, August 18, 20111 in hail · 3 eventsAn upper air disturbance coupled with a surface trough helped trigger strong to locally severe thunderstorms during the evening on the northern Eastern Shore.
• Hail in Ohio, August 18 to 19, 2011$650,000 · 2 in hail · 31 eventsA storm system affected northern Ohio on August 18th and 19th. Showers and thunderstorms developed across the area during the evening of the 18th and continued through the early morning hours of the 19th. Some of the stronger thunderstorms became severe.
• Hail in South Dakota, August 18, 2011$945,000 · 2.75 in hail · 6 eventsA supercell thunderstorm developed over far southwestern Jackson County and northeastern Shannon County and moved southeastward. The storm produced hail as large as baseballs across portions of northeastern Shannon and Bennett Counties.
• Hail and Damaging Winds in Pennsylvania, August 18 to 19, 2011$300,000 · 1.25 in hail · 16 eventsAn upper air disturbance coupled with a surface trough helped trigger strong to locally severe thunderstorms during the evening in southeastern Pennsylvania. Scattered thunderstorms persisted through the night.
• Flash Flood and Damaging Winds in Arizona, August 18, 20111 injured · $1.1 million · 65 kt wind · 4 eventsA strong overnight complex in Sonora, Mexico produced an outflow boundary and mesoscale convective vortex that tracked north across southern Arizona. This feature was the focus of strong to severe thunderstorms, including a strong microburst in Eloy.
• Damaging Wind in Indiana, August 18, 201152 kt wind · 1 eventScattered severe storms the afternoon of August 18th resulted in isolated wind damage to southern Indiana. Additional damage reports were received from parts of central Kentucky.
• Flash Flood and Dust Storm in Arizona, August 18, 2011$285,000 · 54 kt wind · 8 eventsStrong thunderstorms developed across portions of south central Arizona, including the greater Phoenix area, during the late afternoon and evening hours on August 18th.
• Hail and Damaging Wind in Delaware, August 18, 20111 in hail · 2 eventsAn upper air disturbance coupled with a surface trough helped trigger strong to locally severe thunderstorms during the evening in northern Delaware.
• Hail and Damaging Winds in Iowa, August 18, 2011$3.4 million · 2.75 in hail · 10 eventsWarm advection took place over Iowa with a 20 to 25 kt low level jet drawing moisture into the area. Precipitable water values increased to 1.8 inches by mid day. A shortwave and cold front was approaching from the northwest as the atmosphere became quite unstable.
• Hail in Indiana, August 18, 20110.75 in hail · 3 eventsA weak trough moved through the region, sparking thunderstorms across portions of northeastern Indiana. A few of the storms produced hail to the size of dimes.
• Hail and Damaging Winds in New York, August 18, 2011$11,000 · 1 in hail · 12 eventsA passing mid level disturbance triggered isolated severe thunderstorms that produced damaging winds and large hail across Staten Island and Nassau and Suffolk Counties.
• Hail and Damaging Winds in Kansas, August 18 to 19, 20111 in hail · 4 eventsMinor severe weather events were noted with some weak storms across the area.
• Hail and Damaging Winds in Missouri, August 18 to 19, 20112 injured · $1.2 million · 1.75 in hail · 71 eventsAfter what had been a quiet few weeks, conditions rapidly changed on Thursday, August 18th, 2011. A favorable setup for severe thunderstorm activity, developed in the mid-section of the country.
• Hail in West Virginia, August 18, 20111 in hail · 2 eventsA southerly flow around high pressure off the east coast produced hot and humid conditions. The hot and humid conditions combined with colder air aloft associated with an upper-level trough to produce moderate amounts of instability.
• Hail and Damaging Winds in Louisiana, August 18, 2011$35,000 · 1 in hail · 5 eventsA tropical wave moving west across the northern Gulf of Mexico helped produce some thunderstorms, some of which produced hail and damaging winds across southwest Louisiana.
• Hail and Damaging Wind in Nebraska, August 18, 2011$252,000 · 1 in hail · 2 eventsWhile much of eastern Nebraska was lashed with multiple severe storms on this Thursday afternoon and evening, South Central Nebraska caught only a glancing blow across a handful of far eastern counties as a southward-moving supercell cluster tracked through areas mainly east of…
• Hail in Pennsylvania, August 18, 20111 in hail · 1 eventScattered pulse thunderstorms produced large hail in Adams County.
• Damaging Wind in Pennsylvania, August 18, 2011$3,000 · 50 kt wind · 1 eventA storm system affected the upper Ohio Valley on August 18th. Showers and thunderstorms developed across the area with at least one of the thunderstorms becoming severe.
• Damaging Winds in New Jersey, August 18, 2011$12,000 · 61 kt wind · 4 eventsA passing mid level disturbance triggered isolated severe thunderstorms that produced damaging winds across Passaic and Bergen Counties.
• Hail and Damaging Winds in Tennessee, August 18, 2011$18,000 · 1 in hail · 4 eventsA lingering boundary across the area triggered isolated thunderstorms during the afternoon hours as instability increased. A few of the storms produced damaging thunderstorm wind and hail as large as quarters.
• Hail and Damaging Winds in Kansas, August 18, 20111 in hail · 39 eventsDuring the overnight hours on August 18, a line of strong thunderstorms moved out of southeast Nebraska into northeast Kansas. These storms brought periods of strong winds of 70 to 80 mph, with some locations reporting damage to trees and structures.
• Hail and Damaging Winds in Kansas, August 18 to 19, 201175 kt wind · 12 eventsAfter what had been a quiet few weeks, conditions rapidly changed on Thursday, August 18th, 2011. A favorable setup for severe thunderstorm activity, developed in the mid-section of the country.
• Flash Flood and Hail in Minnesota, August 18 to 19, 2011$5,000 · 1.75 in hail · 16 eventsA cold front crossed into the northwest quarter of Minnesota late on the night of the 18th into the early morning hours of the 19th.
• Flash Flood in Pennsylvania, August 19, 20111 eventA series of thunderstorms, which occurred from the morning of the 18th into the overnight of the 18th caused flash flooding in parts of southeastern Chester County.
• Flash Flood in Delaware, August 19, 20111 eventA series of thunderstorms, which occurred from the morning of the 18th into the overnight of the 18th caused flash flooding in northern New Castle County.
• Damaging Winds in Missouri, August 19, 201152 kt wind · 3 eventsScattered storms developed and moved southeast across the forecast area. A few of the storms produced damaging winds.
• Hail and Damaging Wind in Minnesota, August 19, 20111.75 in hail · 3 eventsA fast moving cold front touched off isolated strong thunderstorms over northeast Minnesota.
• Flash Flooding and Flooding in Pennsylvania, August 19, 20114 deaths · 1 injured · $1.7 million · 1.5 in hail · 53 eventsA slow moving cold front and a moist unstable airmass combined to produce scattered severe thunderstorms and flash flooding across eastern Ohio and Western Pennsylvania.
• Tornadoes and Hail in Michigan, August 19, 2011$30,000 · EF0 · 9 eventsA deep low pressure system moving through northwest Ontario pushed a warm front across western Upper Michigan in the morning hours...followed by a cold frontal passage in the afternoon.
• Flash Flood and Hail in Pennsylvania, August 19, 20111.5 in hail · 7 eventsShowers and thunderstorms developed with daytime heating and instability as an upper level disturbance moved across the area. Scattered storms became severe, producing damaging wind gusts and large hail.
• Hail and Damaging Winds in New York, August 19, 2011$10,000 · 1.25 in hail · 8 eventsShowers and thunderstorms developed with daytime heating and instability as an upper level disturbance moved across the area. Scattered storms became severe, producing damaging wind gusts and large hail.
• Hail and Damaging Winds in Pennsylvania, August 19, 2011$40,000 · 1 in hail · 14 eventsAn upper level disturbance combined with deep moisture and instability to produce several reports of severe weather during the early to mid afternoon.
• Flash Flooding and Hail in New York, August 19, 20111.25 in hail · 11 eventsA weak cold front and a disturbance in the upper levels of the atmosphere moved across the region on Friday, August 19th, triggering showers and thunderstorms during the afternoon hours. Winds aloft were weak, so the storms were slow moving which resulted in some flash flooding.
• Hail and Damaging Winds in New Hampshire, August 19, 20111 in hail · 11 eventsIncreasing shear in the warm sector ahead of a cold front helped focus and sustain damaging winds in long-lived linear thunderstorms. Cells gathered strength in the Hudson Valley, moved across Vermont and caused considerable wind damage in Sullivan county.
• Hail and Damaging Winds in Massachusetts, August 19, 2011$147,000 · 1 in hail · 30 eventsSouthwest flow kept a cold front over Southern New England for a prolonged period of time. Coupled with an approaching shortwave, this created enough lift, instability, and moisture to produce strong to severe thunderstorms.
• Hail and Damaging Winds in Pennsylvania, August 19, 2011$20,000 · 1.75 in hail · 11 eventsThe combination of another upper air disturbance and a weak surface trough triggered a line of strong to |severe thunderstorms that moved through Eastern Pennsylvania mainly during the second half of the afternoon of the 19th.
• Hail and Damaging Winds in Maryland, August 19, 2011$4,000 · 1 in hail · 3 eventsScattered severe thunderstorms in advance of a cold front produced damaging winds and large hail across portions of the Lower Maryland Eastern Shore.
• Tornadoes and Hail in Wisconsin, August 19, 20111 death · $120,000 · EF1 · 7 eventsA deadly tornado occurred in Marinette County in Wausaukee and isolated severe thunderstorms produced large hail and gusty winds across north-central Wisconsin. The storms knocked out electricity to 2,000 customers and caused at least $120,000 in damage.
• Hail and Damaging Winds in Delaware, August 19, 2011$20,000 · 52 kt wind · 5 eventsThe combination of another upper air disturbance and a weak surface trough triggered scattered strong to severe thunderstorms during the afternoon of the 19th and then a line of strong to severe thunderstorms during the early evening of the 19th.
• Hail and Damaging Winds in Kansas, August 19, 201161 kt wind · 8 eventsAfternoon thunderstorms developed in an unstable atmosphere as temperatures soared.
• Damaging Winds in Vermont, August 19, 2011$15,000 · 55 kt wind · 2 eventsOn August 19th, a weak frontal boundary and mid-atmospheric disturbance was located across the spine of the Green Mountains in a moderately unstable air mass with very weak flow.
• Hail and Damaging Wind in North Carolina, August 19, 201155 kt wind · 2 eventsA few thunderstorms developed over western North Carolina during the afternoon hours. One of the storms produced wind damage and small hail in Hickory.
• Hail and Damaging Winds in Maryland, August 19, 2011$19,000 · 1 in hail · 14 eventsAn upper-level trough provided cold air aloft while warm and moist air remained at the surface. Moderate amounts of instability developed during the afternoon and evening hours.
• Flash Flood in Arizona, August 19, 2011$10,000 · 1 eventThunderstorms produced heavy rain over the Schultz Burn Area which lead to flash flooding down hill.
• Hail and Damaging Winds in Maine, August 19, 20111 in hail · 10 eventsIncreasing shear in the warm sector ahead of a cold front helped focus and sustain damaging winds in long-lived linear thunderstorms.
• Flash Flood and Heavy Rain in Ohio, August 19, 2011$1,000 · 2 eventsThunderstorms developed during the afternoon along a weak frontal boundary across central Ohio. The slow moving and back building nature of these thunderstorms produced heavy rain and flash flooding at some locations.
• Hail and Damaging Winds in New York, August 19, 2011$38,000 · 1 in hail · 12 eventsA passing mid level disturbance triggered severe thunderstorms that produced large hail and damaging winds across the Lower Hudson Valley, New York City, and Nassau County.
• Hail and Damaging Winds in New Jersey, August 19, 2011$20,000 · 1 in hail · 16 eventsThe combination of another upper air disturbance and a weak surface trough triggered a line of strong to severe thunderstorms that affected New Jersey during the late afternoon and early evening of the 19th.
• Damaging Winds in West Virginia, August 19, 2011$1,000 · 56 kt wind · 2 eventsAn upper-level trough provided cold air aloft while warm and moist air remained at the surface. Moderate amounts of instability developed during the afternoon and evening hours. An isolated thunderstorm was able to produce damaging wind gusts.
• Damaging Winds in South Carolina, August 19 to 21, 20116 injured · $181,000 · 60 kt wind · 6 eventsIsolated storms in the Pee Dee region produced some severe weather in Chesterfield county. Damging winds took down trees and did some structural damage.
• Damaging Winds in South Carolina, August 19, 201160 kt wind · 2 eventsShowers and Thunderstorms developed ahead of an approaching shortwave. A few storms became strong but only one storm became severe.
• Hail and Damaging Winds in New Jersey, August 19, 2011$27,000 · 1.75 in hail · 9 eventsA passing mid level disturbance triggered severe thunderstorms that produced large hail, damaging winds and lightning strikes across Bergen, Essex, Hudson, and Passaic Counties.
• Hail and Damaging Winds in Massachusetts, August 19, 20111 in hail · 3 eventsA weak cold front and a disturbance in the upper levels of the atmosphere moved across the region on Friday, August 19th, triggering showers and thunderstorms during the afternoon hours.
• Hail and Damaging Winds in Virginia, August 19, 20112 injured · $12,000 · 1 in hail · 5 eventsAn upper-level trough provided cold air aloft while warm and moist air remained at the surface. Moderate amounts of instability developed during the afternoon and evening hours. An isolated thunderstorm was able to produce damaging wind gusts.
• Flash Flooding in New York, August 19, 20113 eventsA passing mid level disturbance triggered scattered thunderstorms, which produced heavy rain that resulted in flash flooding in portions of Orange, Westchester and Queens Counties.
• Flash Flooding in Maryland, August 19, 20113 eventsAn upper-level disturbance combined with a moist, unstable airmass to induce scattered thunderstorms during the afternoon and evening hours. Several reports of flash flooding were received as this activity moved across the saturated ground along the Interstate 95 corridor.
• Damaging Winds in Georgia, August 19, 2011$54,000 · 3 eventsThe ever persistent pattern of the 2011 summer continued across the United States. A very strong subtropical ridge, centered across Texas and the southern plains, remained in place. This continued to place Georgia and the southeastern U.S.
• Flash Flood and Flood in Pennsylvania, August 19 to 20, 20112 eventsThe runoff from heavy rain caused flash flooding in Montgomery County during the evening of the 19th and creek flooding overnight on the 19th in lower Montgomery County and eastern Philadelphia.
• Damaging Wind in Texas, August 19, 201152 kt wind · 1 eventThis is a test.
• Flash Flood and Damaging Wind in Arizona, August 19, 2011$9,000 · 56 kt wind · 2 eventsWind from a thunderstorm caused damage in Chino Valley. Heavy rain (1.70) from the thunderstorm also caused flooding.
• Flash Flooding in New Jersey, August 19, 20113 eventsA passing mid level disturbance triggered scattered thunderstorms which produced heavy rain that resulted in flash flooding in portions of Bergen and Hudson Counties.
• Damaging Winds in Tennessee, August 19, 2011$15,000 · 52 kt wind · 2 eventsIsolated thunderstorms developed again today during the afternoon and evening hours as a boundary lingered across the region. A few of the storms produced damaging thunderstorm wind.
• Hail in Kansas, August 19, 20110.75 in hail · 1 eventAn east-west oriented band of showers and thunderstorms moved north across Thomas, Sheridan and Graham counties, resulting in heavy rainfall and one severe hail report.
• Flash Flooding in Virginia, August 19, 20112 eventsAn upper-level disturbance combined with a moist, unstable airmass to induce scattered thunderstorms during the afternoon and evening hours. Very heavy rainfall rates with some of this activity in the Washington, DC, suburbs caused a few flash floods.
• Damaging Wind in Georgia, August 19, 2011$2,000 · 50 kt wind · 1 eventShowers and thunderstorms developed inland before progressing over western portions of the forecast area during the evening and early night hours.

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.