Midwest/Plains/Northeast Tornadoes

Losses, 2024 dollars

$2.4 billion

Losses at the time

$1.8 billion

Deaths

10

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 in South Dakota, May 25, 20131.5 in hail · 1 eventA severe thunderstorm moved from southeastern Montana and clipped northwestern Harding County, producing large hail north of Camp Crook.
• Hail in Nebraska, May 25, 20131 in hail · 1 eventA severe thunderstorm moved northeast into Southwest Nebraska during the evening. The largest hail reported was 1 near Max.
• Hail in South Dakota, May 25, 20131 in hail · 2 eventsA severe thunderstorm developed over southwestern Harding County and tracked northeastward. Hail to the size of quarters was reported from near Harding to Ludlow.
• Hail in Nebraska, May 25, 2013$800,000 · 2.75 in hail · 3 eventsBetween 730-815 pm CDT on this Saturday evening, a severe multicell storm tracked northeast through western portions of Dawson County, pelting areas in and near Gothenburg with large hail ranging from quarter to baseball size.
• Hail and Damaging Wind in Texas, May 25, 201353 kt wind · 2 eventsScattered thunderstorms developed over the eastern New Mexico Plains during the afternoon hours of the 25th. These storms developed along a dryline stretching from southern New Mexico to the central Oklahoma Panhandle.
• Hail in South Dakota, May 25, 20131 in hail · 2 eventsA severe thunderstorm developed across north central Butte County and produced hail to quarter size before weakening.
• Hail in South Dakota, May 25, 2013$20,000 · 3 in hail · 1 eventA severe thunderstorm developed over northeastern Perkins County and dropped large hail near Shadehill.
• Hail and Damaging Winds in South Dakota, May 25, 2013$20,000 · 2.75 in hail · 7 eventsA long-lived severe thunderstorm tracked from southeastern Montana across northwestern South Dakota during the mid to late evening. The storm produced very large hail and gusty winds across central Harding, southern Perkins, and northern Ziebach Counties.
• Hail in South Dakota, May 25, 20131 in hail · 1 eventA thunderstorm briefly became severe over northern Haakon County and produced quarter size hail near Kirley.
• Flash Flood and Heavy Rain in Texas, May 25, 20132 eventsAn upper level disturbance had moved over the area, and plentiful moisture was present across the Permian Basin. This led to the development of thunderstorms across the Permian Basin which resulted in flash flooding.
• Flash Flooding and Hail in Iowa, May 25 to 26, 2013$1.4 million · 1 in hail · 41 eventsA strong warm front was in place across central Nebraska through northern Missouri. The front aloft bisected Iowa from northwest to southeast. A 35 kt low level jet was in place with strong moisture transport into the state.
• Flash Flooding and Hail in South Dakota, May 25 to 26, 2013$30,000 · 1.75 in hail · 9 eventsThunderstorms produced flash flooding and large hail in southeast South Dakota from late evening of May 25th into the morning of May 26th.
• Hail and Damaging Wind in South Dakota, May 25, 20131 in hail · 3 eventsA thunderstorm developed near Faith and quickly became severe as it tracked eastward across Ziebach County.
• Damaging Wind in Kansas, May 26, 2013$25,000 · 58 kt wind · 1 eventAround 130am CDT on this early Sunday morning, a 67 MPH wind gust occurred at the Smith Center airport, resulting in at least a few instances of tree damage in town.
• Flash Flooding in Iowa, May 26, 20133 eventsThunderstorms produced heavy rain which caused flash flooding in Sioux, O'Brien, and Cherokee Counties in northwest Iowa on the morning of May 26th.
• Flash Flooding in Iowa, May 26, 20138 eventsLow pressure was located in western South Dakota with a stationary front extending into eastern Missouri on May 26-27, 2013. North of the front temperatures were only in the 50s in eastern Iowa but to the south readings were in the 80s with dewpoints in the 60s.
• Tornado and Flash Flooding in Iowa, May 26 to 27, 20131 death · $2.3 million · EF0 · 32 eventsThe continued series of thunderstorms moved across Iowa during the afternoon of the 26th and through the overnight hours of the 26th into the 27th. A stationary front remained in place from central Nebraska into northern Missouri.
• Tornado in Idaho, May 26, 2013EF0 · 1 eventAn upper low moving through the Intermountain West kicked off showers and isolated severe thunderstorms across parts of Southwest Idaho.
• Damaging Winds in Arkansas, May 26 to 29, 2013$80,000 · 52 kt wind · 2 eventsDaytime heat and humidity led to the development of isolated storms on the afternoon and evening on the 26th and 29th.
• Lightning Strike in Illinois, May 26, 20131 death · 1 eventScattered thunderstorms developed across central Illinois during the afternoon of May 26th. Lightning from one of the storms struck a fisherman on the Kaskaskia River near the Lake Shelbyville Dam. The man was later pronounced dead at the Shelby Memorial Hospital in Shelbyville.
• Hail in Wyoming, May 26, 20132.5 in hail · 8 eventsModerate instability and sufficient vertical shear resulted in the development of severe thunderstorms across portions of the Billings Forecast Area during the afternoon and evening hours of the 26th.
• Flash Flooding in Illinois, May 26, 20136 eventsLow pressure was located in western South Dakota with a stationary front extending into eastern Missouri on May 26-27, 2013. North of the front temperatures were only in the 50s in eastern Iowa but to the south readings were in the 80s with dewpoints in the 60s.
• Flash Flooding and Hail in Missouri, May 26, 20131 in hail · 4 eventsDiurnally driven thunderstorms, aided by a weak disturbance, were noted across central Missouri, during the late afternoon hours of May 26, 2013. Due to their slow movement, locally heavy rains were observed, which produced some flash flooding. There was also one report of hail.
• Flash Flooding and Hail in Montana, May 26 to 27, 20131.75 in hail · 7 eventsModerate instability and sufficient vertical shear resulted in the development of severe thunderstorms across portions of the Billings Forecast Area during the afternoon and evening hours of the 26th.
• Hail in Wyoming, May 26, 20131.25 in hail · 3 eventsA severe thunderstorm developed in the Gillette area and remained nearly stationary for a time, then tracked very slowly northward. The storm produced hail up half dollar size and heavy rain over northern Campbell County.
• Hail in Wyoming, May 26, 20131.5 in hail · 5 eventsA severe thunderstorm developed just south of Echeta and tracked slowly northward across northwestern Campbell County. The storm produced large hail at times from the Echeta area to the Montana border.
• Hail in Montana, May 26, 20131.75 in hail · 3 eventsStrong day-time heating and a moist, up-slope flow combined with moderate instability and sheer to produce some severe thunderstorms across portions of northeast Montana.
• Flash Flood and Hail in Missouri, May 26, 20131 in hail · 2 eventsThunderstorms developed along a warm front. Some of the storms produced large hail and very heavy rainfall.
• Hail in Iowa, May 26, 20131.25 in hail · 1 eventThis was the first event of an unsettled weather pattern that set up over the central Plains for the last several days in May. Warm moist air was returning to western Iowa as a warm front moved north into the area.
• Flash Flood and Hail in Wyoming, May 26, 2013$25,000 · 1 in hail · 5 eventsA second severe thunderstorm developed in the Echeta area and tracked slowly north-northeast across northern Campbell County. The storm produced quarter size hail from Echeta to south and east of Recluse.
• Hail in Wyoming, May 26, 2013$2,000 · 1.5 in hail · 3 eventsAbundant low-level moisture coupled with an unstable atmosphere and an approaching jet streak produced several severe thunderstorms over Johnson County on the evening of the 26th.
• Flash Flooding and Flooding in Illinois, May 26 to 27, 201312 eventsA slow-moving warm front brought several rounds of showers and thunderstorms to central Illinois from May 25th through May 27th. The heaviest rainfall of between 2 and 6 inches occurred along and west of the Illinois River Valley.
• Hail in Nebraska, May 26 to 27, 2013$150,000 · 2 in hail · 5 eventsA lone, compact-but-intense supercell drifted slowly northeast across western portions of Valley County mainly between 8-10 pm CDT on this Sunday evening, dumping large hail up to two inches in diameter.
• Hail in Texas, May 26, 20131.75 in hail · 2 eventsDuring the afternoon hours of the 26th, a dryline had progressed into the central Texas Panhandle. The surface convergence along this dryline allowed an isolated thunderstorm to initiate despite marginal low level capping over eastern Armstrong and Carson Counties.
• Hail in Wyoming, May 26, 20131 in hail · 2 eventsEvening thunderstorms produced some hail along with a funnel cloud in Niobrara County.
• Hail and Damaging Winds in Nebraska, May 26 to 27, 20131 in hail · 9 eventsThis was the first event of an unsettled weather pattern that set up over the central Plains for the last several days in May. Warm moist air was returning to eastern Nebraska as a warm front moved north into the area.
• Hail in Nebraska, May 26, 20131 in hail · 1 eventAn evening thunderstorm deposited hail over parts of Banner County.
• Flash Flood in Illinois, May 26 to 27, 20131 eventHeavy rain developed across parts of central Illinois which caused flash flooding in some areas.
• Hail in Wyoming, May 26, 20131 in hail · 1 eventA severe thunderstorm developed over east central Campbell County and moved northeastward into western Crook County. The storm produced quarter sized hail west of Keyhole Reservoir.
• Flash Flooding in Iowa, May 26 to 27, 2013$1.1 million · 3 eventsThunderstorms produced heavy rain which caused flash flooding in several parts of northwest Iowa on the morning of May 27th, starting just before midnight on May 26th.
• Flash Flood in South Dakota, May 27, 20131 eventThunderstorms produced heavy rain which caused flash flooding of roads south of Canton on the morning of May 27th.
• Hail and Damaging Wind in Missouri, May 27, 2013$500 · 52 kt wind · 2 eventsA Mesoscale Convective System, or MCS, that developed over eastern Nebraska, moved southeast and weakened, as it moved into northwest Missouri, during the early morning hours of May 27, 2013.
• Tornado and Hail in Kansas, May 27, 2013EF2 · 3 eventsSevere thunderstorms impacted parts of northern Kansas. The most notable event occurred just west of Marysville where a strong tornado damaged approximately 30 homes and businesses. No injuries were reported.
• Hail in South Dakota, May 27, 20131.75 in hail · 2 eventsA storm briefly became severe as it moved north from Rapid City into south central Meade County. The storm produced hail to golf ball size near Ellsworth Air Force Base.
• Tornado and Hail in Wyoming, May 27, 2013EF0 · 3 eventsSevere thunderstorms developed before noon in a favorable environment over north-central Wyoming. The storms eventually developed farther to the east on either side of the Bighorn Mountains. One storm spawned a weak tornado over open country in eastern Park County.
• Hail in South Dakota, May 27, 20131 in hail · 6 eventsA severe thunderstorm developed between Spearfish and Deadwood and moved slowly northeastward into southeastern Butte County. The storm produced hail to the size of golf balls from east of Spearfish to near Newell.
• Hail in South Dakota, May 27, 20131 in hail · 1 eventQuarter size hail fell over north central Butte County.
• Damaging Winds in Illinois, May 27, 2013$961,000 · 70 kt wind · 21 eventsA cluster of thunderstorms developed across Iowa, then tracked southeastward along a warm front into central Illinois during the afternoon of May 27th.
• Tornadoes and Hail in Colorado, May 27, 2013EF0 · 6 eventsThunderstorms developed over East Central Colorado during the afternoon. A few of these storms produced large hail, the largest being 1.25 in diameter in Kit Carson County. In addition, three landspouts were reported in eastern Cheyenne county lasting for 5 to 8 minutes.
• Hail and Damaging Wind in Wyoming, May 27, 20131 in hail · 2 eventsA thunderstorm that moved across the Sheridan Foothills produced some large hail and damaging winds.
• Tornadoes and Hail in Nebraska, May 27, 2013EF0 · 10 eventsA passing upper level disturbance interacted with a moist and unstable environment which produced numerous severe thunderstorms with large hail, funnel clouds and a few tornadoes.
• Hail in South Dakota, May 27, 20131.5 in hail · 2 eventsA severe thunderstorm developed near Tilford and produced large hail before weakening as it moved onto the plains.
• Hail in South Dakota, May 27, 20131 in hail · 2 eventsA line of thunderstorms developed over Perkins County and moved eastward. They produced quarter size hail in Meadow.
• Hail and Damaging Wind in Colorado, May 27, 20131.5 in hail · 6 eventsA severe thunderstorm produced large hail, from quarter to walnut size, and wind gusts to 60 mph.
• Flash Flood and Hail in South Dakota, May 27, 2013$10,000 · 1 in hail · 7 eventsA line of thunderstorms expanded across west central South Dakota, producing hail and gusty winds across portions of the area. Heavy rain caused flooding over portions of eastern Meade County.
• Tornado and Hail in Nebraska, May 27, 2013$16 million · EF2 · 14 eventsThis Monday, also Memorial Day, was one of the more widespread severe weather events of spring 2013 over South Central Nebraska.
• Hail in Wyoming, May 27, 20132 in hail · 2 eventsA thunderstorm briefly became severe over the Upton area and produced hail larger than golf ball size.
• Hail in Kansas, May 27, 20130.88 in hail · 2 eventsThere were a couple of isolated marginally severe thunderstorms during the late afternoon.
• Hail in Wyoming, May 27, 2013$500,000 · 1.75 in hail · 1 eventA thunderstorm briefly became severe over Newcastle and produced hail to golf ball size.
• Hail and Damaging Wind in Texas, May 27, 20132.75 in hail · 8 eventsThe dryline mixed east of the Caprock Escarpment by late afternoon, creating an area of enhanced convergence across the Rolling Plains and extreme southeastern Texas Panhandle.
• Hail in South Dakota, May 27, 20131.75 in hail · 1 eventA severe thunderstorm developed over the Badlands and briefly became severe across northwestern Jackson County, producing golf ball size hail near Cottonwood.
• Tornadoes and Hail in Kansas, May 27, 20132 injured · $9.8 million · EF3 · 11 eventsThis event occurred on a Monday, which was also Memorial Day. The first and most intense thunderstorm of the day developed over northern Phillips county just after 4:30 pm CDT.
• Hail and Damaging Winds in Oklahoma, May 27, 2013$102,000 · 1.75 in hail · 17 eventsHigh-based supercells developed over the Texas Panhandle during the afternoon, then moved northeast into western Oklahoma by early evening. Numerous reports of severe winds (some significant) and large hail were received, particularly around the Elk City-Clinton area.
• Hail in South Dakota, May 27, 2013$150,000 · 1.75 in hail · 10 eventsA supercell thunderstorm developed over the southern Black Hills and moved southeastward onto the plains of southwestern South Dakota. Hail to the size of golf balls fell from Pringle to the Hot Springs area to Angostura Reservoir.
• Hail and Damaging Wind in Nebraska, May 27, 20131 in hail · 2 eventsA stationary front across northern Kansas was the focus for numerous severe thunderstorms, where the Storm Prediction Center had a moderate risk. To the north of the front across our area, widely scattered thunderstorms also occurred.
• Tornadoes and Flash Flooding in Nebraska, May 27, 2013EF2 · 10 eventsThunderstorms developed along a stationary boundary near the Kansas and Nebraska border on the afternoon of May 27th. Due to high amounts of instability and shear in the atmosphere these thunderstorms quickly became severe.
• Hail and Damaging Winds in Missouri, May 27 to 28, 2013$3,000 · 1 in hail · 5 eventsAn MCS, or Mesoscale Convective System, rolled across northern Missouri, during the late evening hours of May 27, 2013, into the early morning hours of May 28, 2013. Several spots received damaging winds, as this feature moved east.
• Hail and Damaging Winds in South Dakota, May 27, 20131.75 in hail · 5 eventsA line of storms moving along an instability axis brought severe weather to part of central South Dakota during the late evening hours.
• Damaging Wind in South Dakota, May 27, 201354 kt wind · 1 eventStrong wind gusts developed from decaying thunderstorms over the Winner area.
• Damaging Wind in South Dakota, May 27, 201361 kt wind · 1 eventA thunderstorm produced a 70 mph wind gust at Chamberlain on the late evening of May 27th.
• Flash Flood in Iowa, May 27 to 28, 20131 eventA thunderstorm complex moved out of eastern Nebraska and across southwest Iowa late in the evening on the 27th. The complex of storms brought heavy rainfall to southwest Iowa in areas where the ground was already nearly saturated. This led to isolated flash flooding.
• Hail in Missouri, May 28, 20130.88 in hail · 1 eventA large thunderstorm complex moved east across the region during the early morning hours of May 28th. There were a few reports of hail with the storms.
• Tornadoes and Flash Flooding in Kansas, May 28 to 29, 2013EF3 · 44 eventsSupercell Thunderstorms developed along a stationary boundary and produced large tornadoes during the afternoon and evening of May 28th 2013. 2 tornadoes occurred in Nemaha county Kansas and at least 1 violent long lived tornado occurred in Ottawa County Kansas.
• Flash Flood and Hail in Missouri, May 28, 20131.75 in hail · 7 eventsA stalled frontal boundary over northern Missouri, combined with a very warm and humid airmass, produced severe thunderstorms across western Missouri, during the afternoon hours of May 28, 2013. There were several reports of large hail, and one report of flash flooding.
• Flash Flooding and Flooding in Iowa, May 28 to 29, 2013$3.1 million · 1.5 in hail · 37 eventsA very unstable airmass was in place over Iowa. The stationary front that had been south of the state over the past several days began to lift north and extended from southwest into east central Iowa on the afternoon of the 28th.
• Tornadoes and Hail in Oklahoma, May 28, 2013$800,000 · EF0 · 7 eventsA severe weather outbreak brought hail, damaging winds, and tornadoes to portions of the Oklahoma Panhandle from the afternoon of the 28th into the early morning hours of the 29th.
• Hail and Damaging Wind in Texas, May 28, 2013$75,000 · 2.5 in hail · 10 eventsA long-lived discrete supercell thunderstorm developed ahead of a dryline and approaching shortwave trough during the mid to late afternoon in Parmer County.
• Tornadoes and Hail in Nebraska, May 28, 2013EF0 · 16 eventsLate afternoon and early evening thunderstorms over portions of the western Nebraska Panhandle produced large hail, damaging winds, a few tornadoes, and a funnel cloud.
• Tornado and Hail in Kansas, May 28, 2013EF0 · 22 eventsAn upper level short wave through moved into the plains helping to produce the necessary lift along a retreating dry line to produce thunderstorms, some of which were severe.
• Tornadoes and Hail in Texas, May 28, 2013$521 million · EF0 · 58 eventsA severe weather outbreak brought hail, damaging winds, tornadoes, and flash flooding to the Panhandles from the afternoon of the 28th into the early morning hours of the 29th.
• Hail and Damaging Wind in Nebraska, May 28, 20132.75 in hail · 8 eventsScattered severe thunderstorms developed during the afternoon of the 28th along a stationary front extending across southeastern Nebraska and into southwest Iowa where strong instability had developed.
• Flash Flood and Hail in Iowa, May 28, 20131 in hail · 8 eventsA nearly stalled frontal boundary across the area interacted with a rather strong upper air disturbance on May 28, 2013, which triggered severe thunderstorms in the moderate to high instability. Sufficient deep layer shear was in place along with a moist airmass.
• Damaging Winds in Michigan, May 28, 2013$35,000 · 70 kt wind · 3 eventsIsolated severe storms caused wind gusts of up to 60 to 75 mph across portions of Ingham and Clinton counties on May 28th, with significant damage occurring to a lumberyard in Delta township in Clinton county where a semi was also blown over.
• Hail in Texas, May 28, 20131.25 in hail · 2 eventsAn upper level trough was over Arizona and New Mexico, and it provided lift to West Texas. There was a dryline across the Permian Basin with plentiful low level moisture to the east of this feature. This lift and moisture combined to produce thunderstorms across the Trans Pecos.
• Hail in Wyoming, May 28, 20131.75 in hail · 3 eventsLate afternoon thunderstorms produced large hail in Goshen County.
• Hail in Oklahoma, May 28, 20131.75 in hail · 2 eventsSupercells developed during the late afternoon over southwest Kansas, then progressed east-southeastward into Oklahoma, taking on a more linear structure. A few reports of large hail were received over northwest Oklahoma.
• Damaging Wind in Virginia, May 28, 2013$2,000 · 52 kt wind · 1 eventA shortwave trough moved north of the region. Organized convection developed near the I-95 corridor where instability was the greatest. Scattered showers and thunderstorms produced large hail, heavy rainfall and damaging winds.
• Damaging Winds in Illinois, May 28, 201352 kt wind · 3 eventsA nearly stalled frontal boundary across the area interacted with a rather strong upper air disturbance on May 28, 2013, which triggered severe thunderstorms in the moderate to high instability. Sufficient deep layer shear was in place along with a moist airmass.
• Lightning Strike in Florida, May 28, 20131 death · 1 eventDeep moisture and southeast winds fueled scattered afternoon thunderstorms over central and southwest Florida that moved northwest towards the coast. Lightning from one of the storms struck and killed a woman walking on Belleair Beach.
• Hail in Ohio, May 28, 20131 in hail · 2 eventsA warm front lifted north across the upper Ohio Valley spreading warm and moist air across the region. Strong to severe thunderstorm developed in association with this front. A few storms in far northeastern Ohio became severe.
• Flash Flood and Flood in Illinois, May 28 to 30, 2013$1.0 million · 2 eventsAfter several days of repeated rainfall, strong thunderstorms produced significant flash flooding across portions of Knox County during the evening of May 28th.
• Flash Flood in District of Columbia, May 28, 20131 eventA shortwave trough moved north of the region. Organized convection developed near the I-95 corridor where instability was the greatest. Scattered showers and thunderstorms produced large hail, heavy rainfall and damaging winds.
• Hail and Damaging Wind in Colorado, May 28, 20132 in hail · 10 eventsSevere thunderstorms produced large hail, from one to two inches in diameter, and wind gusts to 60 mph.
• Tornadoes and Hail in Pennsylvania, May 28 to 29, 20131 death · 7 injured · $455,000 · EF1 · 7 eventsA warm front lifted north across the upper Ohio Valley spreading warm and moist air across the region. Strong to severe thunderstorms developed in association with this front. A couple of the thunderstorms became severe.
• Tornado and Hail in Kansas, May 28, 2013EF0 · 3 eventsA couple severe thunderstorms spawned 2 weak tornadoes and produced ping-pong ball to golfball-sized hail in Barton & Lincoln counties early in the evening.
• Hail and Damaging Winds in Maryland, May 28, 2013$2,000 · 1 in hail · 7 eventsA shortwave trough moved north of the region. Organized convection developed near the I-95 corridor where instability was the greatest. Scattered showers and thunderstorms produced large hail, heavy rainfall and damaging winds.
• Damaging Wind in Colorado, May 28, 2013$60,000 · 61 kt wind · 1 eventA thunderstorm produced destructive outflow winds near Colona on the afternoon of May 28th.
• Tornado and Damaging Wind in South Dakota, May 28, 20132 injured · $125,000 · EF1 · 2 eventsA line of thunderstorms produced a small tornado that touched down briefly and strong straight line winds south of Allen.
• Hail and Damaging Winds in Pennsylvania, May 28, 2013$40,000 · 1.5 in hail · 4 eventsScattered thunderstorms developed along an old outflow boundary, one of which became severe severe.
• Tornadoes and Damaging Wind in Michigan, May 28, 2013$865,000 · EF2 · 8 eventsA warm front spawned 6 tornadoes which impacted Shiawassee and Genesee Counties.
• Hail in Kansas, May 28, 2013$800,000 · 1.75 in hail · 2 eventsAlthough this portion of North Central Kansas narrowly missed a more widespread onslaught of severe weather that impacted parts of central and northeast Kansas on this Tuesday afternoon and evening, a pair of severe storms snuck into Mitchell County and dropped quarter to golf…
• Flash Flooding and Damaging Winds in New York, May 28 to 29, 2013$75,000 · 50 kt wind · 5 eventsShowers and thunderstorms developed along and ahead of a warm front. A severe thunderstorm over Chautauqua County produced winds that downed trees and power lines at the Chautauqua Institute and just east of Kennedy.
• Tornado and Flash Flooding in Illinois, May 28 to 29, 2013$67,000 · EF0 · 14 eventsSevere thunderstorms moved across parts of northern Illinois during the evening of May 28th producing strong winds, heavy rain and flash flooding. Additional thunderstorms moved across parts of northern Illinois during the early morning hours of May 29th.
• Flash Flood in Pennsylvania, May 28 to 29, 2013$100,000 · 1 eventA tornadic storm moved through Union City on the evening of the 28th. Heavy rain accompanied this storm with a 15 minute ASOS rain gage reading of 0.65. The storm total rain the river basin that Union City resides in was approximately 4.
• Flash Flood and Flood in Pennsylvania, May 28 to 29, 2013$24,000 · 78 kt wind · 8 eventsStrong to severe convective development shifted east of the Lake Erie region into northwest Pennsylvania, within a zone of broader vertical ascent extending downstream from an upper level wave migrating into the Great Lakes region.
• Tornadoes in Pennsylvania, May 28, 2013$12,000 · EF1 · 2 eventsIsolated supercells shifted east of the Lake Erie region and produced two tornadoes in Warren County during the late evening. Both tornadoes occurred in the northern half of the county and were relatively small/short-lived and weak.
• Hail in Wisconsin, May 28, 20131.25 in hail · 1 eventA line of thunderstorms moved east across southern Wisconsin during the evening hours of May 28th. The storms produced large hail in southern Waukesha County.
• Damaging Winds in Indiana, May 28, 201356 kt wind · 8 eventsA cluster of thunderstorms developed southwest of Chicago during the mid evening hours and moved rapidly east, taking on a bowing structure as it entered northwestern Indiana. Wind damage was reported across La Porte and St.
• Damaging Winds in Michigan, May 28, 201356 kt wind · 2 eventsA cluster of thunderstorms developed southwest of Chicago during the mid evening hours and moved rapidly east, taking on a bowing structure as it entered southwestern lower Michigan.
• Flash Flooding in Kansas, May 28 to 29, 20132 eventsA stalled frontal boundary over Doniphan County, combined with a very warm and humid airmass, produced thunderstorms with very heavy rains, during the evening hours of May 28, 2013. There were two reports of flash flooding in Doniphan County.
• Hail and Damaging Wind in Nebraska, May 28, 20131.5 in hail · 6 eventsScattered severe thunderstorms developed May across western Nebraska in a post frontal up slope environment.
• Damaging Winds in Illinois, May 28 to 29, 2013$102,000 · 61 kt wind · 3 eventsA nearly stationary frontal boundary extending from the Plains into the southern Great Lakes provided the focus for several periods of showers and thunderstorms across north-central Illinois on May 28th.
• Flash Flooding in Texas, May 28 to 29, 2013$8,000 · 5 eventsThe combination of significant quantities of hail and heavy rain caused localized flash flooding across the city after the storm ended. The Amarillo Police Department reported 6 high water rescues associated with this flooding.
• Damaging Wind in Texas, May 28, 2013$10,000 · 55 kt wind · 1 eventA dryline in west Texas caused thunderstorms that moved into western parts of South Central Texas. One of these storms produced damaging wind gusts in Val Verde County.
• Tornadoes and Flash Flooding in Nebraska, May 29 to 30, 2013$160,000 · EF0 · 26 eventsA deep upper level trough of low pressure intersected a cold front, with strong to severe thunderstorm development the result.
• Flash Flood in Florida, May 29, 20131 eventDeep tropical moisture persisted across South Florida along with onshore flow along the southeast coast as high pressure persisted over the southeast states. This resulted in a cluster of heavy showers that moved from the Atlantic into northeast Palm Beach County.
• Tornadoes and Hail in Nebraska, May 29 to 30, 2013$2.8 million · EF1 · 31 eventsThere was a lot of active weather across South Central Nebraska on this Wednesday, occurring in multiple episodes throughout the entire day, culminating in seven tornadoes. Three of these tornadoes were classified as EF-1 with the other four producing EF-0 damage.
• Damaging Winds in Michigan, May 29, 201352 kt wind · 3 eventsA severe thunderstorm developed over St Clair County.
• Tornado and Flash Flooding in Nebraska, May 29, 2013EF0 · 12 eventsA cluster of thunderstorms developed over south central Nebraska and spread east into an area of strong instability and weak inhibition over southeast Nebraska. As a low level jet increased, so did the areal coverage of thunderstorms.
• Hail and Damaging Winds in Minnesota, May 29, 20131 in hail · 6 eventsThunderstorms that developed across southeast South Dakota Wednesday morning, May 29th, moved east-northeast into west central Minnesota. As the complex of thunderstorms moved into west central Minnesota, a few small hail stones were reported around Canby, and Montivideo.
• Tornado in Colorado, May 29, 2013EF0 · 1 eventA thunderstorm with rotation produced a tornado in northern Rio Blanco County.
• Flash Flooding and Flooding in Iowa, May 29 to 30, 2013$4.6 million · 1.5 in hail · 56 eventsA warm front moved slowly north into Iowa during the overnight hours of the 28th into the 29th. The airmass became unstable as surface temperatures warmed into the low 80s, with dewpoints around 70 along and south of the front.
• Hail and Damaging Winds in Texas, May 29, 2013$15,000 · 2 in hail · 21 eventsMay 29th brought a widespread severe weather outbreak to the eastern Texas Panhandle. Morning upper air analysis on the 29th showed a mid-level trough centered from Idaho to New Mexico with a low level closed low over Colorado and the western Oklahoma Panhandle.
• Flash Flooding and Damaging Wind in Iowa, May 29, 201360 kt wind · 3 eventsA cluster of thunderstorms developed over central Nebraska and spread east into an area of strong instability and weak inhibition over western Iowa. As a low level jet increased, so did the areal coverage of thunderstorms.
• Tornadoes and Hail in Kansas, May 29, 2013$150,000 · EF0 · 24 eventsA strong upper level jet moved into the Texas Panhandle area putting southwest Kansas in the favorable left exit region providing enough to lift to produce thunderstorms, many that were severe. The boundary layer was moist and unstable.
• Flash Flood and Hail in Nebraska, May 29, 20131.75 in hail · 14 eventsSevere thunderstorms moved/developed over far Southwest Nebraska during the afternoon. Large hail up to 1.5 inches in diameter, wind gusts around 65 MPH, and flash flooding were reported from the storms.
• Tornado and Flash Flooding in Iowa, May 29 to 31, 2013$160,000 · EF0 · 18 eventsA small tornado developed east of Garnavillo (Clayton County) and traveled east/northeast to the Mississippi River before crossing over into Wisconsin.
• Flash Flood and Hail in Minnesota, May 29, 2013$8,000 · 59 kt wind · 7 eventsThunderstorms developed during the afternoon of May 29th in a warm and moist airmass behind a warm front that was moving north across the Upper Midwest. These storms produced wind damage across Fillmore County and some flash flooding in Houston County.
• Tornadoes and Hail in Texas, May 29, 2013$5,000 · EF0 · 6 eventsA strong upper level trough moved into west Texas during the early afternoon hours, resulting in convective initiation along the dryline.
• Hail and Damaging Wind in New York, May 29, 2013$10,000 · 50 kt wind · 2 eventsA thunderstorm quickly developed in Wayne county along the Lake Ontario lake breeze and move east into Cayuga County. In Port Byron, thunderstorm winds downed trees and power lines.
• Tornadoes and Hail in Oklahoma, May 29 to 30, 2013$138,000 · EF1 · 42 eventsA large upper trough was ejecting out of the Rockies, with a dryline extending from western Nebraska through the Texas Panhandle. Strong wind shear and instability were in place over the southern Plains.
• Tornadoes and Hail in Kansas, May 29, 2013$54,000 · EF0 · 29 eventsDuring the early afternoon severe thunderstorms developed initially along a stationary front near the Colorado/Kansas border, moving to the north. The storm activity gradually spread to the east through the afternoon and evening.
• Flash Flooding and Hail in New York, May 29, 20131 death · $306,000 · 2 in hail · 39 eventsA stalled frontal boundary across central New York created an unstable airmass and allowed severe thunderstorms to develop during the afternoon.
• Damaging Winds in Kansas, May 29, 201361 kt wind · 15 eventsFrom mid-afternoon to late in the evening of the May 29th, severe thunderstorms unleashed damaging winds from Barton and Lincoln Counties in Central Kansas to Chautauqua and Montgomery Counties in Southeast Kansas.
• Hail and Damaging Winds in Colorado, May 29, 2013$31,000 · 1.75 in hail · 12 eventsSevere thunderstorms developed over Eastern Colorado during the afternoon, generally moving to the northeast. Large hail up to 1.75 inches and severe wind gusts up to 75 MPH were estimated by spotters in Cheyenne county.
• Tornado and Flash Flood in Wisconsin, May 29, 2013$44,000 · EF0 · 20 eventsA small tornado crossed the Mississippi River from Iowa hitting a campground just north of Bagley (Grant County). This tornado was part of a larger severe weather outbreak that occurred across much of western Wisconsin during the afternoon and evening of May 29th.
• Flash Flood and Debris Flow in Montana, May 29, 20132 eventsHeavy thunderstorms moved across the Dahl and Chalky Fire burn scar areas.
• Damaging Winds in Wisconsin, May 29, 201352 kt wind · 3 eventsA complex of thunderstorms that developed across southeast Minnesota, moved quickly northeast into west central Wisconsin, and produced damaging wind gusts from near Eau Claire, to Fairchild, Wisconsin.
• Tornadoes and Flash Flooding in New York, May 29, 20131 injured · EF2 · 38 eventsDuring the day on May 29th, a warm front lifted northward across eastern New York. Although the day began cloudy, some breaks of sun started to occur by early afternoon.
• Flash Flooding and Hail in Iowa, May 29, 20131 in hail · 22 eventsA warm front extended from a surface low pressure in northwest Kansas to just north of Omaha and then into central Illinois on May 29, 2013. Plentiful moisture was noted south of this front with dewpoints in the 60s.
• Damaging Winds in Mississippi, May 29 to 30, 2013$31,000 · 50 kt wind · 2 eventsThere was enough instability and low level moisture for an isolated severe storm to develop around Greenville on the 30th. Another storm developed on the 29th near Cleveland.
• Hail and Damaging Winds in Texas, May 29, 2013$249,000 · 2 in hail · 19 eventsA cluster of Thunderstorms occurred during the afternoon and evening of May 29th. A dry line was moving east from west Texas, but the strong to severe thunderstorms developed ahead of the dry line, producing several reports of gusty thunderstorm winds.
• Damaging Winds in Wisconsin, May 29, 2013$120,000 · 70 kt wind · 3 eventsA line of severe thunderstorms moved into Iowa and Sauk counties during the early evening hours of May 29th, with damaging wind gusts estimated up to 80 mph (70 knots) knocking down trees and power lines as well as causing roof damage to several homes and structural damage to…
• Flash Flooding and Damaging Winds in Massachusetts, May 29, 201356 kt wind · 9 eventsDuring the day on May 29th, a warm front lifted northward across western Massachusetts. Although the day began cloudy, some breaks of sun started to occur by early afternoon.
• Damaging Winds and Lightning Strikes in Massachusetts, May 29, 2013$96,000 · 50 kt wind · 6 eventsA few severe thunderstorms formed in western Massachusetts during the evening and produced damaging winds. The storms developed in a warm and humid air mass south of a warm front, which remained draped over central New England.
• Flash Flooding and Flooding in South Dakota, May 29 to 30, 2013$525,000 · 6 eventsThunderstorms developed along the eastern slopes of the Black Hills and adjacent plains from Nisland to Sturgis to the Rapid City area. As these storms moved toward the northwest, they redeveloped and became stationary over the eastern foothills.
• Flash Flooding in Vermont, May 29, 20132 eventsDuring the day on May 29th, a warm front lifted northward across southern Vermont. Although the day began cloudy, some breaks of sun started to occur by afternoon.
• Flash Flood and Hail in Oklahoma, May 29 to 30, 2013$40,000 · 1 in hail · 11 eventsA complex of thunderstorms that formed in Kansas, pushed south into eastern Oklahoma during the evening of the 29th. Strong damaging wind and large hail occurred with the more intense storms.
• Damaging Winds in Connecticut, May 29, 201350 kt wind · 4 eventsDuring the day on May 29th, a warm front lifted northward across northwestern Connecticut. Although the day began cloudy, some breaks of sun started to occur by early afternoon.
• Tornado and Damaging Winds in Kansas, May 29, 2013$130,000 · EF1 · 6 eventsSevere weather was widespread across the Central Plains on this Wednesday, and North Central Kansas was not spared. An EF-1 tornado occurred, as well as straight-line wind damage.
• Damaging Wind in Connecticut, May 29, 2013$10,000 · 50 kt wind · 1 eventThunderstorms developed during the evening in warm and humid air behind a warm front over central New England.
• Flash Flood and Damaging Wind in Iowa, May 29, 201352 kt wind · 2 eventsThunderstorms produced a damaging wind gust in Ida County, and flash flooding in Plymouth County in northwest Iowa on the evening of May 29th.
• Tornado and Flash Flooding in Kansas, May 30 to 31, 2013$100,000 · EF0 · 27 eventsA widespread outbreak of severe weather occurred over southeast Kansas.
• Flash Flooding and Flooding in Kansas, May 30 to 31, 2013$100,000 · 2.5 in hail · 11 eventsA slow moving trough across the central portions of the country helped develop several rounds of severe thunderstorms and flash flooding across southeast Kansas.
• Hail in Kansas, May 30, 20131.75 in hail · 7 eventsAfternoon heating along a dry line was enough to initiate thunderstorms, some of which became severe.
• Tornadoes and Hail in Oklahoma, May 30, 2013$3.1 million · EF2 · 29 eventsA complex of storms that had been over portions of eastern Oklahoma during the early morning hours intensified during the late morning and afternoon resulting in isolated reports of large hail and damaging wind.
• Hail and Damaging Wind in Michigan, May 30, 2013$15,000 · 61 kt wind · 3 eventsA few reports of damaging wind gusts and large hail were received on May 30th.
• Hail and Damaging Winds in Michigan, May 30, 2013$38,000 · 1.75 in hail · 34 eventsSeveral severe thunderstorms developed with good afternoon instability.
• Hail and Damaging Winds in Wisconsin, May 30, 2013$411,000 · 1 in hail · 19 eventsIndividual severe thunderstorms that developed over South Central Wisconsin, producing hail up to 1 inch in diameter, merged into several squall lines that produced damaging wind gusts as they moved east through Southeast Wisconsin during the afternoon and evening hours of May…
• Tornado and Hail in Oklahoma, May 30, 2013$10,000 · EF1 · 3 eventsA broad upper trough ejected out of the Great Basin and moved into the Central Plains. Broad southwest flow aloft developed across the Southern Plains into the Lower Mississippi Valley.
• Tornadoes and Flood in Oklahoma, May 30, 2013$85,000 · EF0 · 46 eventsA stalled frontal boundary and dryline became the focus for scattered supercell thunderstorms during the afternoon hours of the 30th. While a couple of brief tornadoes occurred, very large hail and damaging winds were the main hazards of the day.
• Tornadoes and Flash Flooding in Arkansas, May 30 to 31, 20137 deaths · 17 injured · $16 million · EF2 · 58 eventsThe approach of low pressure aloft triggered numerous thunderstorms from the 30th into the early morning hours of the 31st. Tornadoes, severe thunderstorms, and flash flooding occurred. The flooding killed six people, and the tornadoes killed one.
• Hail and Damaging Winds in Michigan, May 30, 2013$109,000 · 1 in hail · 11 eventsDisorganized clusters of thunderstorms developed in the afternoon, in a warm and rather humid airmass. Some of these storms became severe.
• Hail and Damaging Winds in Wisconsin, May 30, 2013$76,000 · 61 kt wind · 13 eventsThunderstorms developed in unstable air as upper level disturbances passed across the area. Some of the storms became severe, producing damaging winds and hail up to penny size.
• Flash Flood and Damaging Winds in Missouri, May 30, 2013$20,000 · 61 kt wind · 3 eventsSeveral outflow boundaries, combined with an unstable atmosphere, led to an isolated severe thunderstorm over north central Missouri, during the afternoon hours of May 30, 2013. There were a couple of reports of damaging winds and one report of flash flooding.
• Damaging Wind and Heavy Rain in Illinois, May 30, 2013$50,000 · 52 kt wind · 6 eventsClusters of thunderstorms moved north across southern Illinois. The storms occurred in a southwesterly flow of moist and moderately unstable air. The storms were enhanced by a 500 mb shortwave extending from the Ozarks to the Lower Mississippi Valley.
• Damaging Winds in Missouri, May 30, 2013$110,000 · 70 kt wind · 4 eventsA cold front pushing into a very moist and unstable airmass triggered numerous severe thunderstorms on May 30, 2013. Deep layer shear was moderate to strong and freezing levels were in the 11-12k foot level, which was ideal for large hail.
• Hail and Damaging Winds in Illinois, May 30, 20131 death · $6,000 · 1.25 in hail · 19 eventsStrong to severe thunderstorms moved across parts of northern Illinois during the afternoon and evening hours of May 30th.
• Hail and Damaging Winds in Arkansas, May 30, 20132 injured · 1 in hail · 5 eventsSevere thunderstorms developed across central and eastern Oklahoma during the afternoon hours of the 30th, ahead of a dry line over central Oklahoma and along an outflow boundary across northeastern Oklahoma.
• Damaging Winds in Iowa, May 30 to 31, 2013$110,000 · 61 kt wind · 2 eventsA strong shortwave moved through the base of the parent upper level trough kicking off a line of showers and thunderstorms stretching from south central Iowa into central and western Missouri by early afternoon.
• Hail in Indiana, May 30, 20131 in hail · 3 eventsStrong to severe thunderstorms moved across parts of northwest Indiana during the afternoon and evening hours of May 30th.
• Tornadoes and Hail in Illinois, May 30, 2013$40,000 · EF0 · 15 eventsA cold front pushing into a very moist and unstable airmass triggered numerous severe thunderstorms on May 30, 2013. Deep layer shear was moderate to strong and freezing levels were in the 11-12k foot level, which was ideal for large hail.
• Tornadoes and Hail in Iowa, May 30, 2013$125,000 · EF1 · 30 eventsA cold front pushing into a very moist and unstable airmass triggered numerous severe thunderstorms on May 30, 2013. Deep layer shear was moderate to strong and freezing levels were in the 11-12k foot level, which was ideal for large hail.
• Flash Flooding and Flood in Illinois, May 30 to 31, 2013$464,000 · 61 kt wind · 22 eventsA slow-moving storm system brought showers and thunderstorms to central Illinois during the afternoon and evening of May 30th. Some of the storms became severe, producing damaging wind gusts in excess of 60 mph and locally heavy rainfall.
• Hail in Nebraska, May 30, 20130.75 in hail · 1 eventAround 2:30 pm CDT on this Thursday afternoon, scattered thunderstorms began forming over southwestern Nebraska and over Furnas, Gosper and Phelps counties. These storms were of the pulse variety, but in close enough proximity to exhibit some multicell characteristics.
• Tornado and Flash Flooding in Missouri, May 30 to 31, 20132 deaths · 2 injured · $80,000 · EF1 · 61 eventsA slow moving trough across the central portions of the country helped develop several rounds of severe thunderstorms and flash flooding across the Missouri Ozarks.
• Hail and Damaging Winds in Ohio, May 30, 201360 kt wind · 3 eventsAn unstable environment was in place across much of the region, allowing for scattered thunderstorm development. Shear profiles were rather weak, but sufficient to help a few storms organize somewhat and produce isolated severe weather.
• Damaging Winds in Kansas, May 30, 201352 kt wind · 2 eventsDuring the afternoon and early evening severe wind gusts were reported from a couple thunderstorms over Northwest Kansas. The strongest wind gust of 59 MPH was measured at Norton airport when a thunderstorm moved over the site.
• Hail and Damaging Winds in Kansas, May 30, 201352 kt wind · 3 eventsScattered thunderstorms developed early, near midday, over northwestern Kansas on this Thursday. These storms formed a common cold pool and spread eastward, mostly along Interstate 70. However, some ancillary storms formed over North Central Kansas, between 3:30 and 4 pm CDT.
• Flash Flooding and Hail in Missouri, May 30 to 31, 20131 in hail · 14 eventsA strong storm system was approaching the region. Several rounds of thunderstorms moved through from the afternoon hours of May 30th through late morning on May 31st. There were numerous reports of damaging winds, large hail and flash flooding with these storms.
• Damaging Winds in Michigan, May 30, 2013$3,000 · 55 kt wind · 3 eventsUpper disturbances moving through a warm and unstable air mass produced several severe thunderstorms over western Upper Michigan during the late afternoon hours of the 30th.
• Damaging Wind in Indiana, May 30, 2013$6,000 · 61 kt wind · 1 eventScattered thunderstorms developed across western portions of Indiana and eastern portions of Illinois during the late afternoon of May the 30th. One singular wind damage report was received from Knox County as a strong storm moved north over Vincennes.
• Damaging Winds in Illinois, May 30, 201358 kt wind · 13 eventsA strong storm system was approaching the region. Several rounds of thunderstorms moved through from the afternoon hours of May 30th through late morning on May 31st. There were numerous reports of damaging winds, large hail and flash flooding with these storms.
• Damaging Wind in Mississippi, May 30, 201350 kt wind · 1 eventAn upper level disturbance moving through the Mid-South interacted with a moist and unstable airmass to produce scattered thunderstorms during the afternoon and evening hours of May 30, 2013 . A few of the storms became severe with large hail and damaging winds.
• Damaging Wind in Iowa, May 30, 201352 kt wind · 1 eventFor the second straight day, thunderstorms developed during the afternoon across northeast Iowa. Some of these storms produced severe wind gusts with a 60 mph gust occurring southeast of Garnavillo (Clayton County).
• Damaging Wind in Arkansas, May 30, 20131 injured · 50 kt wind · 1 eventAn upper level disturbance moving through the Mid-South interacted with a moist and unstable airmass to produce scattered thunderstorms during the afternoon and evening hours of May 30, 2013 . A few of the storms became severe with large hail and damaging winds.
• Hail in Texas, May 30, 2013$10,000 · 1.75 in hail · 4 eventsIsolated thunderstorms developed along the southwestern side of a cold front / dry line on the 30th. Thunderstorms affected mainly Montague County.
• Hail and Damaging Winds in Kentucky, May 30, 20132 injured · $123,000 · 1 in hail · 9 eventsClusters of thunderstorms moved north across western Kentucky. The storms occurred in a southwesterly flow of moist and moderately unstable air. The storms were enhanced by a 500 mb shortwave extending from the Ozarks to the Lower Mississippi Valley.
• Hail and Damaging Winds in Tennessee, May 30, 20131 in hail · 5 eventsAn upper level disturbance moving through the Mid-South interacted with a moist and unstable airmass to produce scattered thunderstorms during the afternoon and evening hours of May 30, 2013 . A few of the storms became severe with large hail and damaging winds.
• Hail and Damaging Winds in Nebraska, May 30, 20132 in hail · 15 eventsThis was the the final severe weather event in a series of occurrences that were associated with a seasonably deep upper level low pressure over the northern Plains.
• Damaging Wind in Missouri, May 30, 2013$2,000 · 52 kt wind · 1 eventClusters of thunderstorms moved north-northeast across southeast Missouri. The storms occurred in a southwesterly flow of moist and moderately unstable air. The storms were enhanced by a 500 mb shortwave extending from the Ozarks to the Lower Mississippi Valley.
• Hail in Iowa, May 30, 20131 in hail · 2 eventsThis was the final severe weather event in a series of occurrences that were associated with a seasonably deep upper level low pressure over the northern Plains.
• Hail in Nebraska, May 30, 20130.88 in hail · 1 eventA thunderstorm produced nickel size hail at Dixon on the evening of May 30th.
• Hail in Minnesota, May 30, 20130.75 in hail · 1 eventA thunderstorm produced penny size hail at Hills in Rock County in southwest Minnesota on the evening of May 30th.
• Hail in Iowa, May 30, 20130.88 in hail · 2 eventsThunderstorms produced nickel size hail at two locations in northwest Iowa on the evening of May 30th.
• Tornado and Flash Flooding in Arkansas, May 30 to 31, 2013$1.4 million · EF1 · 5 eventsAn mesoscale convective system developed over Southern Missouri and Northern Arkansas and pushed across Northeast Arkansas into West Tennessee during the early morning hours of May 31, 2013. A few severe storms produced damaging winds and flash flooding.
• Lightning Strike in Minnesota, May 31, 2013$50,000 · 1 eventA lightning strike caused an electrical fire at a home in St. Cloud, Minnesota during the early morning hours of Friday, May 31st. Damage was significant, but the home was not occupied at the time of the fire.
• Damaging Wind in Indiana, May 31, 201355 kt wind · 1 eventA line of strong to severe thunderstorms developed in central and northern Illinois during the evening hours of May 30th. This line moved east into northwestern Indiana, but was weakening as it arrived. One thunderstorm produced local damage in the Granger area.
• Flash Flooding and Hail in Kansas, May 31, 20132.25 in hail · 15 eventsDuring the early morning hours of May 31 some rather strong thunderstorms formed ahead and along a front that was stretched across eastern Kansas. These thunderstorms were able to produce hail that ranged from one to two inches in diameter.
• Flash Flooding and Hail in Missouri, May 31, 20131 in hail · 9 eventsA strong low level jet, combined with an unstable airmass, led to thunderstorm development over eastern Kansas. These thunderstorms rolled east across central Missouri, during the morning hours of May 31, 2013.
• Tornado and Damaging Wind in Tennessee, May 31, 2013$208,000 · EF1 · 2 eventsAn mesoscale convective system developed over Southern Missouri and Northern Arkansas and pushed across Northeast Arkansas into West Tennessee during the early morning hours of May 31, 2013. A few severe storms produced damaging winds and flash flooding.
• Flash Flood in Kansas, May 31, 20131 eventA thunderstorm with very heavy rain, caused flash flooding in Johnson County, during the early morning hours of May 31, 2013. A strong low level jet, combined with an unstable airmass, led to the thunderstorm development.
• Damaging Winds in Michigan, May 31, 2013$10,000 · 52 kt wind · 3 eventsIsolated severe thunderstorms developed producing wind damage.
• Damaging Winds in Maine, May 31, 201356 kt wind · 6 eventsA cold front moved south across northern Maine during the afternoon hours of the 31st...with thunderstorms developing in advance of the front. Severe thunderstorms produced damaging winds across portions of northern Aroostook county.
• Damaging Winds in Ohio, May 31, 2013$11,000 · 60 kt wind · 12 eventsClusters of strong to severe thunderstorms developed during the peak heating of the day with strong upper level winds in place. The main threat from these storms was damaging winds.
• Tornadoes in North Dakota, May 31, 2013EF0 · 2 eventsBy mid afternoon of the 31st, a west to east surface boundary set up along a line from Devils Lake to Grafton to the Upper Red Lake. The actual surface low was located over southeast North Dakota and was a vertically stacked low.
• Hail in Minnesota, May 31, 20131.25 in hail · 21 eventsThe afternoon of Friday, May 31st, thunderstorms developed over the Twin Cities Metro Area, and moved northward between Minneapolis and St. Paul. Numerous reports of penny and nickel size hail fell in the Twin Cities, with locally half dollar size hail in some parts.
• Damaging Winds in Ohio, May 31, 2013$55,000 · 56 kt wind · 11 eventsA very warm and humid airmass was in place on May 31st. Showers and thunderstorms developed across northern Ohio. Some of the stronger thunderstorms became severe. Damage was reported in several counties.
• Hail in Minnesota, May 31, 20130.75 in hail · 2 eventsThere were thunderstorms during the afternoon of May 31st over northeast Minnesota which resulted in a couple of penny size (0.75 inch) hail reports.
• Hail and Damaging Wind in Minnesota, May 31, 2013$30,000 · 1.75 in hail · 16 eventsMultiple rounds of thunderstorms moved across southeast Minnesota during the afternoon and evening of May 31st. These storms developed in a complex surface pattern across the Upper Midwest as a pre-frontal surface trough, dry line and cold front all passed through the area.
• Hail in Wisconsin, May 31, 20131.75 in hail · 18 eventsNumerous thunderstorms developed during the afternoon of Friday, May 31st along the Wisconsin, Minnesota border. These storms quickly became severe, producing large hail across the region.
• Hail and Damaging Winds in Missouri, May 31, 20131 in hail · 9 eventsSevere thunderstorms produced hail and damaging winds, across west central Missouri, during the afternoon hours of May 31, 2013. A weak boundary south of Kansas City, combined with a warm and humid airmass, led to the thunderstorm development.
• Tornadoes and Flash Flooding in Illinois, May 31, 2013$1.1 million · EF1 · 38 eventsAn approaching cold front brought showers and thunderstorms to central Illinois during the evening of May 31st. Many of the storms became severe, producing widespread wind damage across the area. Two tornadoes briefly touched down as well.
• Hail and Damaging Winds in Michigan, May 31, 2013$1,000 · 1 in hail · 3 eventsUpper disturbances moving through a warm and unstable air mass produced several severe thunderstorms over western Upper Michigan during the late afternoon and evening hours of the 31th.
• Hail in Wisconsin, May 31, 20131.25 in hail · 14 eventsMultiple rounds of thunderstorms moved across western Wisconsin during the afternoon and evening of May 31st. These storms developed in a complex surface pattern across the Upper Midwest as a pre-frontal surface trough, dry line and cold front all passed through the area.
• Tornadoes and Flash Flooding in Oklahoma, May 31, 201321 deaths · 35 injured · $1.3 million · EF3 · 76 eventsA tornado outbreak occurred during the late afternoon and early evening hours of the 31st. A stalled front and deeply mixed dryline served as a focus for thunderstorm development. The front/dryline triple point was where the most intense supercells initiated.
• Tornadoes and Hail in Oklahoma, May 31, 20132 injured · $154,000 · EF1 · 36 eventsSevere thunderstorms developed over central Oklahoma and southern Kansas along a slow-moving cold front during the afternoon hours of the 31st. Very unstable air ahead of the cold front, combined with strong wind shear, resulted in storms quickly evolving into supercells.
• Flash Flood and Damaging Winds in Kansas, May 31, 2013$200 · 52 kt wind · 3 eventsA weak boundary, combined with a warm and humid airmass, led to a severe thunderstorm, that produced damaging winds and flash flooding, across Linn County, during the late afternoon hours of May 31, 2013.
• Tornadoes and Flash Flooding in Missouri, May 31, 20139 injured · $60 million · EF3 · 27 eventsStorms developed along an outflow boundary that was laid out along the I-70 corridor. The storms produced wind damage, large hail as well as 9 tornadoes. Two of the tornadoes were rated EF3 as they moved through the St. Louis metro area.
• Flash Flood and Damaging Winds in Illinois, May 31, 201373 kt wind · 4 eventsStrong to severe thunderstorms moved across parts of central Illinois during the afternoon of May 31st.
• Tornado and Flash Flood in Iowa, May 31, 2013EF0 · 4 eventsMultiple round of thunderstorms moved across northeast Iowa during the afternoon and evening of May 31st. These storms developed in a complex surface pattern across the Upper Midwest as a pre-frontal surface trough, dry line and cold front all passed through the area.
• Tornado and Flash Flood in Indiana, May 31, 2013$9,000 · EF0 · 10 eventsStrong to severe thunderstorms moved across parts of northwest Indiana during the afternoon and evening hours of May 31st.
• Hail in Wisconsin, May 31, 20131.75 in hail · 3 eventsThunderstorms developed in moist and unstable air ahead of an approaching front. Some of the storms produced large hail and strong wind gusts.
• Tornadoes and Hail in Illinois, May 31, 2013EF3 · 14 eventsStorms developed along an outflow boundary that was laid out along the I-70 corridor. The storms produced wind damage, large hail as well as 9 tornadoes. Two of the tornadoes were rated EF3 as they moved through the St. Louis metro area.
• Hail in Iowa, May 31, 2013$62,000 · 1.75 in hail · 9 eventsA cold front dropped slowly southeast into Iowa. The severe parameters were not strong, however a narrow line of thunderstorms developed over north central Iowa into western Wisconsin. The storms trained along a slow moving line. Shear was strong with 65 kts of available shear.
• Flash Flooding and Damaging Winds in Indiana, June 1, 201355 kt wind · 10 eventsConvection moved into the region during the evening hours of May 31st. Although this weakened, the remnants of it provided a west to east focus for continued development of showers and thunderstorms.
• Flash Flooding and Flooding in Arkansas, June 1 to 26, 2013$267,000 · 52 kt wind · 18 eventsThe upper level low pressure system that brought severe weather and flash flooding to Arkansas on May 30th and 31st moved closer to the state on June 1st, producing another round of severe weather and flash flooding.
• Flash Flooding and Flood in Illinois, June 1, 2013$40,000 · 52 kt wind · 14 eventsAn approaching cold front brought showers and thunderstorms to central Illinois during the evening of May 31st. Many of the storms became severe, producing widespread wind damage across the area. Two tornadoes briefly touched down as well.
• Flash Flood and Flooding in Missouri, June 1, 20132 in hail · 40 eventsHeavy rainfall led to flooding across the Missouri Ozarks.
• Flash Flood and Flooding in Missouri, June 1 to 30, 2013$26,000 · 5 eventsThe Mississippi River started June in flood and hit major flood levels early in the month. The river fell the rest of the month but remained in flood into July. Damage was limited to some closed roads, and flooded farmland and parks.
• Flash Flooding in Missouri, June 1, 20134 eventsStorms developed along an outflow boundary that was laid out along the I-70 corridor. The storms produced wind damage, large hail as well as 9 tornadoes. Two of the tornadoes were rated EF3 as they moved through the St. Louis metro area on May 31st.
• Flash Flooding in Indiana, June 1, 20132 eventsHeavy rain caused flooding on a state highway.
• Flash Flood in Illinois, June 1, 20131 eventHeavy rain caused flooding over a county road.
• Flash Flooding and Damaging Winds in Oklahoma, June 1, 20131 death · 1 injured · $400,000 · 70 kt wind · 15 eventsSevere thunderstorms developed over central Oklahoma and southern Kansas along a slow-moving cold front during the afternoon hours of May 31st. Very unstable air ahead of the cold front, combined with strong wind shear, resulted in storms quickly evolving into supercells.
• Flash Flooding in Oklahoma, June 1, 2013$8,000 · 4 eventsThe convective episode which began the previous evening continued into the early morning hours of June 1. Cells primarily trained over the I-40 corridor in the Oklahoma City metro area, resulting in significant flooding for some areas.
• Tornado and Flash Flooding in Arkansas, June 1, 2013$130,000 · EF1 · 13 eventsSevere thunderstorms developed over central Oklahoma and southern Kansas along a slow-moving cold front during the afternoon hours of May 31st. Very unstable air ahead of the cold front, combined with strong wind shear, resulted in storms quickly evolving into supercells.
• Damaging Winds in Indiana, June 1, 2013$1,000 · 63 kt wind · 4 eventsJune got off to a stormy start right away as a weakening squall line moved across the western part of central Indiana during the early morning of the 1st, producing sporadic wind damage.
• Damaging Winds and Heavy Rain in Illinois, June 1, 2013$51,000 · 52 kt wind · 6 eventsA mesoscale convective system that originated over the Missouri Ozarks maintained strength as it moved through the middle Mississippi Valley during the overnight hours. Isolated wind damage accompanied this system.
• Flash Flood and Flood in Iowa, June 1, 2013$300,000 · 2 eventsA cold front dropped slowly southeast into Iowa. The severe parameters were not strong, however a narrow line of thunderstorms developed over north central Iowa into western Wisconsin. The storms trained along a slow moving line.
• Flash Flood in Illinois, June 1, 20131 eventStorms developed along an outflow boundary that was laid out along the I-70 corridor. The storms produced wind damage, large hail as well as 9 tornadoes. Two of the tornadoes were rated EF3 as they moved through the St. Louis metro area on May 31st.
• Flash Flooding and Flooding in Kentucky, June 1, 2013$1.6 million · 61 kt wind · 11 eventsA mesoscale convective system that originated over the Missouri Ozarks maintained strength as it moved through the middle Mississippi Valley during the overnight hours. The system slowed down and then stalled as it crossed the Lower Ohio Valley very early in the morning.
• Flash Flooding and Damaging Wind in Arkansas, June 1, 2013$80,000 · 50 kt wind · 5 eventsA slow moving cold front pushed into Eastern Arkansas during the morning of June 1st, 2013. Heavy rain fell as a result of slow moving thunderstorms and produced flash flooding across much of Northeast Arkansas. One thunderstorm produced straight line winds.
• Damaging Winds in Maine, June 1, 201352 kt wind · 2 eventsThunderstorms developed in advance of a stalling cold front during the afternoon hours of the 1st. Isolated severe thunderstorms produced damaging winds across portions of Piscataquis county.
• Hail and Damaging Winds in Alabama, June 1, 2013$400 · 0.88 in hail · 3 eventsA quasi-linear convective system produced gusty winds along it's leading edge as it moved east across northern Alabama during the late afternoon and early evening hours. Wind gusts of 40 to 50 mph knocked a couple of trees down in Madison and Marshall Counties.
• Hail and Damaging Winds in Tennessee, June 1, 2013$12,000 · 52 kt wind · 7 eventsScattered showers and thunderstorms developed during the afternoon and evening hours across Middle Tennessee. Several reports of wind damage and large hail were received.
• Damaging Winds and Lightning Strike in New York, June 1, 2013$125,000 · 50 kt wind · 12 eventsTwo distinct lines of thunderstorms developed ahead of a weak boundary during the late afternoon and became more organized toward evening. One line developed across the Genesee Valley and the other across the eastern Lake Ontario Region.
• Hail and Damaging Winds in Kentucky, June 1, 2013$5,000 · 1 in hail · 3 eventsIsolated severe thunderstorms developed across the Bluegrass Region during the late afternoon and evening on the first of June. Two storms produced marginally severe hail and damaging winds across Scott, Fayette, and Jessamine Counties.
• Damaging Wind in Pennsylvania, June 1, 2013$2,000 · 50 kt wind · 1 eventA warm front lifted north into the region causing a couple of severe thunderstorms to develop.
• Damaging Winds in New York, June 1, 2013$6,000 · 50 kt wind · 3 eventsA very warm and humid air mass was located across northern New York during the afternoon and evening hours of June 1st.

Every billion-dollar disasterEvery storm of 2013Tornadoes in 2013

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.