Midwest/Plains/East Tornadoes

Losses, 2024 dollars

$3.2 billion

Losses at the time

$2.4 billion

Deaths

27

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 16, 20130.75 in hail · 1 eventA thunderstorm produced hail to penny size in the Kyle area.
• Hail and Damaging Wind in Arkansas, May 16 to 17, 2013$50,000 · 55 kt wind · 3 eventsAn upper level low pressure system was moving slowly through Eastern Oklahoma into Western Arkansas during the afternoon hours of May 16th. A lone supercell thunderstorm across North Central Texas developed during the late morning hours of May 16th.
• Flash Flooding in Arkansas, May 16 to 17, 2013$120,000 · 3 eventsThunderstorms developed across southern Arkansas on the evening of the 16th and the morning of the 17th as an upper level low pressure system moved across the area. Strong thunderstorms resulted and dropped heavy rain.
• Hail in Kansas, May 16, 20130.75 in hail · 1 eventAn isolated hail report was received during the evening.
• Flash Flood and Heavy Rain in Iowa, May 17, 2013$10,000 · 6 eventsA stationary front that had been over southern Iowa began to lift north as a warm front on the morning of the 17th. The atmosphere had become more unstable during the morning with CAPE increasing to 1000 to 2000 J/kg.
• Hail in Texas, May 17, 2013$12,000 · 1.75 in hail · 5 eventsA mesoscale cluster of thunderstorms affected the area during the morning hours of May 17th.
• Lightning Strike in Louisiana, May 17, 2013$50,000 · 1 eventLightning struck an oil tank near Erath.
• Flash Flood and Hail in Mississippi, May 17 to 18, 2013$20,000 · 1.75 in hail · 2 eventsShowers and thunderstorms developed in association with an upper low just north of the area. Some of these storms produced large hail and flash flooding.
• Tornadoes in Alabama, May 17, 2013$150,000 · EF0 · 2 eventsA broad upper level low pressure system moving through the Tennessee valley region produced an area of low topped showers and thunderstorms.
• Tornado and Hail in Nebraska, May 17, 2013EF0 · 6 eventsA passing upper level disturbance interacted with a moist and unstable environment and produced scattered strong to severe thunderstorms during the afternoon and early evening hours in the western Nebraska Panhandle.
• Hail in South Dakota, May 17, 20131 in hail · 4 eventsA severe thunderstorm developed over northern Lawrence County and tracked northeast into southeastern Butte County before weakening. The storm produced hail to the size of quarters in the Spearfish and Saint Onge areas.
• Tornadoes and Hail in Minnesota, May 17, 2013EF0 · 23 eventsThunderstorms produced large hail at numerous locations in Cottonwood and Jackson Counties in southwest Minnesota on the late afternoon of May 17th. There were also two tornadoes reported, though no damage was reported with either.
• Hail in Nebraska, May 17 to 18, 20131.75 in hail · 15 eventsA strong shortwave trough and associated upper level low began to influence the weather conditions, with a stationary front across far northern Nebraska and a dry line across far western Nebraska. Scattered severe thunderstorms focused along the aforementioned boundaries.
• Hail in Arkansas, May 17, 20130.75 in hail · 1 eventA very unstable air mass resulted in extreme instability across southern Arkansas. Some isolated strong to severe thunderstorms formed across Union County, Arkansas along a weak outflow boundary from earlier convection.
• Flash Flood and Hail in Wyoming, May 17, 2013$25,000 · 1 in hail · 6 eventsA line of thunderstorms developed over the southern Big Horn Basin and become severe as they progressed to the northeast. Hail was reported in multiple locations. The largest hail was quarter sized and was observed in Winchester.
• Hail in Wyoming, May 17, 20130.88 in hail · 2 eventsA thunderstorm developed over southwestern Campbell County and produced nickel size hail northwest of Savageton.
• Tornadoes and Hail in Texas, May 17, 2013$506,000 · EF1 · 19 eventsThe dry line became active during the afternoon of May 17th. Only a few storms fired along the dry line across Young and Stephens Counties. However, several reports of large hail, and two tornadoes occurred with these storms.
• Hail in Wyoming, May 17, 2013$200,000 · 2.5 in hail · 4 eventsA severe thunderstorm developed west of Gillette and tracked northeastward across northern Campbell and Crook Counties. The storm produced quarter size hail north of Gillette.
• Hail in South Dakota, May 17, 2013$5,000 · 1.75 in hail · 7 eventsA thunderstorm quickly became severe near Spearfish and tracked east-northeast across western Meade County. The storm produced hail to golf ball size across northeastern Lawrence County and hail to quarter size over portions of western Meade County.
• Flash Flood and Hail in Iowa, May 17, 2013$19,000 · 1.75 in hail · 10 eventsAn unstable airmass was in place over northern Iowa with an outflow boundary draped across the north central counties into southwest Minnesota. This boundary served as a focusing mechanism for thunderstorm development. The freezing level was relatively low at around 11,500 feet.
• Hail in Wyoming, May 17, 20131.25 in hail · 2 eventsA severe thunderstorm developed southwest of Gillette and tracked northeast across central Campbell County. The storm produced hail to half dollar size before weakening as it moved into Crook County.
• Damaging Wind in Texas, May 17, 201352 kt wind · 1 eventA dryline combined with near record temperatures resulted in isolated strong to severe storms. The main hazard was strong damaging winds.
• Hail and Damaging Wind in South Dakota, May 17, 2013$10,000 · 1.75 in hail · 2 eventsA thunderstorm briefly became severe over eastern Bennett County and produced golf ball size hail and strong wind gusts north of Vetal.
• Hail and Damaging Wind in South Dakota, May 17, 20131 in hail · 3 eventsA cluster of thunderstorms over Todd County produced hail to quarter size and strong wind gusts.
• Damaging Winds in North Dakota, May 17, 2013$1,000 · 52 kt wind · 5 eventsScattered thunderstorms moving across southwest and far south central North Dakota produced severe thunderstorm wind gusts.
• Damaging Wind in Tennessee, May 17, 201350 kt wind · 1 eventA weak upper level trough moved across the Mid South generating isolated severe thunderstorms as it moved into a slightly unstable environment over East Central Tennessee.
• Flash Flooding and Flood in Alabama, May 17 to 18, 20131 injured · $100,000 · 1 in hail · 14 eventsOn Friday, May 17th, a slow-moving upper level low was rotating across the mid Mississippi River Valley with an associated surface low over Arkansas and surface trough extending southeastward into Alabama.
• Damaging Wind and High Wind in New Mexico, May 17, 2013$750 · 55 kt wind · 2 eventsVery dry low level conditions combined with weak mid level moisture and instability across central and eastern New Mexico to produce scattered virga showers and gusty thunderstorms.
• Hail and Damaging Winds in South Dakota, May 17, 20131 in hail · 4 eventsA storm system moving across the area brought gusty winds of over 60 mph along with quarter size hail. Locally heavy rainfall was also reported.
• Hail in Wyoming, May 17, 20131 in hail · 1 eventA thunderstorm quickly became severe over southern Crook County and produced hail the size of quarters south of Sundance.
• Hail in Wyoming, May 17, 20131 in hail · 2 eventsA line of severe thunderstorms developed over western Weston County and moved eastward. The storms produced hail to quarter size and gusty winds across much of the county.
• Hail and Damaging Wind in South Dakota, May 17, 2013$1.5 million · 1.75 in hail · 4 eventsA thunderstorm intensified over Lawrence County during the late evening and moved east through Meade County. The storm produced golf ball size hail in Deadwood, which damaged many vehicles in town.
• Hail in Minnesota, May 18, 2013$200 · 1.5 in hail · 2 eventsIsolated thunderstorms developed after midnight across west central Minnesota, and moved slowly eastward across central Minnesota. A few thunderstorms became severe near Sauk Centre, Minnesota and produced up to 1.5 inch hail.
• Hail in North Dakota, May 18, 20130.75 in hail · 1 eventAn isolated thunderstorm moved into southeast North Dakota and dropped some small hail.
• Damaging Wind in Oklahoma, May 18, 201360 kt wind · 1 eventDecaying thunderstorms over the Texas Panhandle moved into far southwest Oklahoma during the early morning hours of the 18th, resulting in severe wind gusts in Harmon County.
• Flash Flood in Mississippi, May 18, 20131 eventA stationary front remained across Northern Mississippi during the early morning hours of May 18th, 2013. The front was a source of continuous development of convection. As a result, heavy rain fell in portions of North Mississippi which produced flash flooding.
• Hail and Damaging Winds in Nebraska, May 18, 2013$82,000 · 2.5 in hail · 40 eventsA potent upper level low pressure system and associated strong shortwave, sparked scattered to numerous severe thunderstorms across western and north central Nebraska. The Storm Prediction Center had much of the area in a moderate risk for severe storms.
• Hail in South Dakota, May 18, 20131.75 in hail · 5 eventsA thunderstorm quickly became severe over southern Lawrence County and moved northeast into western Meade County. Hail to the size of golf balls was reported south of Deadwood.
• Hail and Lightning Strike in Georgia, May 18, 2013$3,000 · 0.88 in hail · 2 eventsScattered thunderstorms developed across portions of southeast Georgia under the influence of weak high pressure and significant surface heating.
• Hail in South Dakota, May 18, 20130.88 in hail · 1 eventA strong thunderstorm produced hail to nickel size in the Spearfish area.
• Tornadoes and Hail in Kansas, May 18, 2013$140,000 · EF4 · 27 eventsHigh instability was in place as an upper level wind maxima moved out of the base of a deep upper trough in the west.
• Hail in Wyoming, May 18, 20131 in hail · 1 eventA thunderstorm developed over northern Natrona County and become severe over eastern Johnson County. The largest hail fell in Linch.
• Hail and Damaging Wind in Kansas, May 18 to 19, 20131.75 in hail · 9 eventsA large weather system moved out into the High Plains from the Rockies during the day. Strong atmospheric instability and wind shear resulted in several clusters of strong to severe storms during the afternoon and evening.
• Hail and Damaging Winds in Oklahoma, May 18, 2013$71,000 · 2.75 in hail · 34 eventsA classic late Spring severe weather setup unfolded over the southern Plains. Rich low-level moisture and very warm temperatures contributed to high instability, while an incoming shortwave trough yielded deep-layer shear sufficient for supercells during the afternoon.
• Hail in South Dakota, May 18, 20131 in hail · 3 eventsA thunderstorm developed west of Rapid City and tracked northeastward into southern Meade County, producing hail to quarter size.
• Hail in Colorado, May 18, 20131 in hail · 7 eventsSevere thunderstorms produced large hail, up to quarter size, in Logan and Washington Counties.
• Tornado and Hail in Nebraska, May 18, 2013EF0 · 8 eventsA synoptic pattern similar to the previous day produced several reports of large hail, funnel clouds and a brief tornado in the western Nebraska Panhandle during the late afternoon and early evening.
• Flash Flooding and Hail in South Dakota, May 18, 2013$5,000 · 1.75 in hail · 4 eventsA severe thunderstorm moved northeastward across Ziebach County and produced golf ball size hail in the Red Elm area. Three to five inches of rain fell in less than two hours, causing several small streams and creeks to quickly overflow their banks.
• Hail and Damaging Winds in South Dakota, May 18 to 19, 20131.25 in hail · 7 eventsA weak upper level disturbance moving across South Dakota interacted with an unstable surface environment resulting in severe thunderstorms. Winds gusting up to near 80 mph in Clark county caused some damage.
• Hail in Nebraska, May 18, 20130.88 in hail · 2 eventsA large weather system moved out into the High Plains from the Rockies during the day. Strong atmospheric instability and wind shear resulted in several clusters of strong to severe storms during the afternoon and evening.
• Hail in Texas, May 18, 20131 in hail · 2 eventsIsolated storms developed across the far southeast Texas panhandle and northern Rolling Plains during the late afternoon and early evening hours ahead of the dryline. A couple of these storms became severe, producing large hail.
• Hail and Damaging Wind in Kansas, May 18, 20131 in hail · 5 eventsAt mid-afternoon on this Saturday, discrete storms initiated over western Kansas, near a surface low and dryline and north of a developing warm front.
• Damaging Wind in Oklahoma, May 18, 201351 kt wind · 1 eventA strong upper level trough moved into eastern New Mexico and Colorado during the afternoon hours of the 18th.
• Hail in Wyoming, May 18, 20131 in hail · 1 eventA thunderstorm developed over northwestern Weston County and strengthened as it crossed northern portions of the county, producing quarter size hail west of Upton.
• Hail in South Dakota, May 18, 2013$450,000 · 1.5 in hail · 8 eventsA thunderstorm developed southwest of Rapid City and produced ping pong ball size hail as it moved across western and southern portions of the city.
• Hail and Damaging Winds in North Dakota, May 18, 2013$25,000 · 1.75 in hail · 6 eventsSevere Thunderstorm Watch number 173 was in effect during this event. A subtle short wave upper level trough ejecting into the Northern Plains acted to further destabilize the atmosphere be weakening a capping inversion within an environment of 1000 Joules/KG of CAPE and 30…
• Hail in Minnesota, May 18, 20131.25 in hail · 2 eventsSeveral thunderstorms developed late Saturday afternoon in west central Minnesota. These storms moved slowly northward and intensified near Starbuck, Minnesota and produced half dollar size hail along with strong winds of 54 mph.
• Hail in South Dakota, May 18, 20130.88 in hail · 1 eventA thunderstorm dropped nickel size hail over Sharps Corner.
• Hail in Wyoming, May 18, 20131 in hail · 1 eventA thunderstorm over central Weston County briefly became severe as it moved across the Osage area.
• Hail and Damaging Winds in Minnesota, May 18, 2013$4,000 · 1 in hail · 5 eventsSeveral thunderstorms formed during the evening of May 18th and produced sporadic reports of hail and strong winds.
• Flash Flooding and Hail in Montana, May 18, 20131.75 in hail · 4 eventsSeveral slow moving thunderstorms producing hail and very heavy rain in a short period of time moved across portions of Custer and Fallon Counties.
• Hail and Damaging Winds in Kansas, May 18, 20131 in hail · 6 eventsA minor event occurred.
• Damaging Winds in Nebraska, May 18, 201353 kt wind · 2 eventsAt mid-afternoon on this Saturday, discrete storms initiated over western Kansas near a surface low and dryline and north of a developing warm front.
• Hail in Texas, May 18, 20132.75 in hail · 2 eventsAn isolated supercell thunderstorm developed along the dryline across Haskell County and produced large hail near Weinert.
• Flash Flood and Hail in South Dakota, May 18, 20131 in hail · 7 eventsStrong to severe thunderstorms developed over the Badlands area and moved northeastward. Hail to quarter size and wind gusts around 60 mph were reported across the area. Heavy rain caused flash flooding over northeastern Haakon County.
• Hail and Damaging Wind in Texas, May 18, 20131.5 in hail · 3 eventsA classic late Spring severe weather setup unfolded over the southern Plains. Rich low-level moisture and very warm temperatures contributed to high instability, while an incoming shortwave trough yielded deep-layer shear sufficient for supercells during the afternoon.
• Tornadoes and Hail in Kansas, May 18, 20132 injured · EF1 · 34 eventsAfter 9pm CDT a squall line developed across north central Kansas and evolved into a bow echo.
• Flash Flood in Montana, May 18, 20131 eventA very moist surface layer combined with a near-stationary, large area of low pressure over the western states to produce slow-moving, efficient downpours.
• Hail and Damaging Winds in Nebraska, May 18, 20131 in hail · 6 eventsModerately unstable conditions developed over eastern Nebraska during the afternoon and evening of May 18th as temperatures warmed into the 80s and dew point temperatures reached the mid to upper 60s.
• Damaging Wind in South Dakota, May 18, 2013$500 · 74 kt wind · 1 eventWind gusts to 85 mph blew tin sheets off a shelterbelt fence and broke fence posts.
• Hail in Colorado, May 18, 20131 in hail · 1 eventA large weather system moved out into the High Plains from the Rockies during the day. Strong atmospheric instability and wind shear resulted in several clusters of strong to severe storms during the afternoon and evening.
• Damaging Wind in Kansas, May 18, 201352 kt wind · 1 eventAn upper level disturbance moved east-northeast into northeast Kansas and northwest Missouri. A strong cap was observed across the area, so only a couple of severe thunderstorms were able to initiate, during the late evening hours of May 18, 2013.
• Flash Flooding and Hail in Tennessee, May 18 to 19, 2013$68,000 · 1.25 in hail · 14 eventsOrographics and a slightly to moderately unstable atmosphere appeared to play a role in severe thunderstorms that formed on the Cumberland Plateau across Southeast Tennessee as well as in the communities of Oak Ridge and Knoxville.
• Damaging Winds in Missouri, May 18, 2013$2,000 · 52 kt wind · 2 eventsAn upper level disturbance moved east-northeast into northwest Missouri. A strong cap was observed across the area, so only a couple of severe thunderstorms were able to initiate during the late evening hours of May 18, 2013.
• Damaging Winds in South Dakota, May 18 to 19, 2013$5,000 · 56 kt wind · 3 eventsThunderstorms produced damaging wind gusts in Davison and Beadle Counties in southeast South Dakota near midnight on the night of May 18th and 19th, 2013.
• Damaging Wind in Iowa, May 18, 201353 kt wind · 1 eventModerately unstable conditions developed over eastern Nebraska during the afternoon and evening of May 18th as temperatures warmed into the 80s and dew point temperatures reached the mid to upper 60s.
• Tornadoes and Hail in Oklahoma, May 19, 2013$70,000 · EF1 · 15 eventsEarly morning thunderstorms produced isolated wind damage across northeastern Oklahoma during the morning of the 19th but more widespread severe weather occurred later in the day.
• Hail and Damaging Winds in Iowa, May 19, 20135 injured · $9,000 · 1 in hail · 4 eventsAn unstable atmosphere was in place with strong theta-e advection taking place overnight. There was around 2000 J/kg of elevated CAPE available with a steep lapse rate, around 9 C, present in the 700 to 500 mb layer of the atmosphere. Downdraft CAPE was around 500 J/kg.
• Flash Flooding and Hail in Georgia, May 19, 2013$1.5 million · 1 in hail · 42 eventsAn upper low was located over southern Kentucky on the morning of the 19th, with a shortwave trough extending into northern Georgia. Tropical moisture prevailed over Georgia as well.
• Flash Flooding and Hail in Tennessee, May 19, 2013$1.0 million · 1 in hail · 7 eventsA cluster of slow moving thunderstorms with heavy rain and large hail impacted mainly eastern Middle Tennessee throughout the day.
• Hail in Illinois, May 19, 20131 in hail · 1 eventA warm front lifted northward through the region during the day on May 19th. Storms developed along boundary as it lifted north. Then later a MCS developed over western Missouri and moved east across the state.
• Hail and Damaging Winds in Iowa, May 19 to 20, 2013$10,000 · 2.75 in hail · 65 eventsA very unstable airmass on May 19, 2013 led to the development of severe thunderstorms that produced large hail and damaging winds.
• Tornado and Hail in Illinois, May 19, 2013EF0 · 22 eventsA very unstable airmass on May 19, 2013 led to the development of severe thunderstorms that produced large hail and damaging winds.
• Tornadoes and Hail in Kansas, May 19, 2013EF1 · 41 eventsA supercell thunderstorm became embedded within a line of storms and produced a small EF1 tornado near the Emporia airport. This tornado produced a non-continuous damage path approximately 9 miles long with the majority of the damage rated EF0.
• Tornadoes and Flash Flood in Iowa, May 19, 20131 injured · $1.1 million · EF1 · 71 eventsThe seasons first major severe weather event took place as a strong upper level low pressure lifted north into the central U.S. This was ahead of a strong upper level low pressure system over the southwest U.S.
• Hail and Damaging Winds in Nebraska, May 19, 20132 in hail · 11 eventsAs low pressure aloft deepened from western Nebraska into South Dakota, thunderstorms developed across central and eastern Nebraska during the early to mid afternoon hours.
• Hail in North Carolina, May 19, 20131 in hail · 1 eventThunderstorms affected the North Carolina mountains during the afternoon hours. One of the storms produced large hail in Madison County.
• Damaging Winds in Wisconsin, May 19, 2013$55,000 · 56 kt wind · 5 eventsA cluster of severe thunderstorms brought damaging winds across much of South Central Wisconsin during the afternoon of May 19th. The wind gusts, between 60 mph and 75 mph (52 knots to 65 knots), blew down numerous trees and power lines.
• Tornadoes and Flood in Kansas, May 19 to 20, 2013EF2 · 58 eventsA significant outbreak of severe weather affected much of central and southeast Kansas. A total of 10 tornadoes touched down and strong winds along with large hail pelted the city of Wichita.
• Flash Flood and Heavy Rain in Kentucky, May 19, 20132 eventsIsolated strong thunderstorms caused isolated incidences of flooding and a landslide on May 19, 2013 in Johnson and Magoffin counties.
• Damaging Wind in Tennessee, May 19, 201355 kt wind · 1 eventIsolated severe thunderstorms embedded in heavy rain showers impacted southern Middle Tennessee during the mid afternoon hours. These storms originated in northern AL and MS before moving into southern Middle Tennessee producing heavy rain and severe winds.
• Flash Flooding and Flooding in Iowa, May 19 to 22, 2013$25 million · 1 in hail · 20 eventsSeveral rounds of thunderstorms rolled across northeast Iowa during the afternoon and evening of May 19th. These storms produced very heavy rains across Floyd and Mitchell Counties where numerous roads were washed out or covered with flood waters.
• Hail and Damaging Winds in Georgia, May 19, 2013$9,000 · 1 in hail · 7 eventsScattered diurnal thunderstorms developed in the afternoon hours under the influence of weak high pressure across the region.
• Tornado and Hail in Nebraska, May 19, 2013$515,000 · EF1 · 19 eventsThis Sunday afternoon and evening was one of the more prolific severe weather events in the spring of 2013, in terms of the number of reports. This event was part of the same large-scale system that produced a few severe thunderstorms the previous day.
• Hail in Alabama, May 19, 20131 in hail · 1 eventA weak upper level storm system produced scattered thunderstorms in northeast Alabama that produced isolated large hail.
• Flash Flood in North Carolina, May 19, 2013$150,000 · 1 eventSlow moving thunderstorms caused a localized area of flash flooding in Yancey County in the North Carolina mountains.
• Flash Flooding and Flood in Virginia, May 19, 20131 in hail · 4 eventsAn upper level low pressure system moved from Kentucky across western Virginia, triggering strong thunderstorms during the afternoon and evening.
• Hail and Damaging Winds in Iowa, May 19, 20131 in hail · 6 eventsAs low pressure aloft deepened from western Nebraska into South Dakota, thunderstorms developed across central and eastern Nebraska during the early to mid afternoon hours.
• Hail and Damaging Winds in Minnesota, May 19, 2013$1,000 · 61 kt wind · 8 eventsThunderstorms began to develop across south central Minnesota during the afternoon of Sunday, May 19th. These storms started to accelerate northward near Owatonna, southeast to Blooming Prairie where the first report of damage was reported northwest of the town.
• Hail in Kentucky, May 19, 20131.75 in hail · 3 eventsUnstable conditions combined with a weak disturbance dropping southward across the Lower Ohio Valley brought scattered thunderstorms to central and eastern Kentucky during the afternoon. Two storms in particular developed weak mid-level rotation and produced severe hail.
• Tornadoes and Hail in Oklahoma, May 19, 20132 deaths · 14 injured · $10,000 · EF4 · 41 eventsA moist and very unstable airmass was in place over the eastern two thirds of Oklahoma, to the east of a dryline. Additionally, strong wind shear was present as a mid-level jet streak carved into the southern Plains.
• Damaging Winds in Florida, May 19, 201350 kt wind · 2 eventsScattered severe storms developed over NE Florida during the late afternoon over an unstable and moist airmass where the sea breezes and outflows converged. During the evening, and upper level disturbance over SE Georgia fueled severe storms where outflows converged.
• Damaging Winds in Georgia, May 19 to 21, 2013$2,000 · 50 kt wind · 2 eventsSome isolated thunderstorms resulted in a few trees being blown down.
• Damaging Wind in Virginia, May 19, 201350 kt wind · 1 eventOrographics and a slightly to moderately unstable atmosphere appeared to play a role in severe thunderstorms that formed across Southwest Virginia.
• Flash Flooding and Flooding in Minnesota, May 19 to 22, 2013$144,000 · 64 kt wind · 22 eventsSeveral rounds of thunderstorms rolled across southeast Minnesota during the afternoon and evening of May 19th. The first round of storms produced wind damage from the northeast corner of Mower County into Winona and Wabasha Counties during the afternoon.
• Hail and Damaging Winds in Missouri, May 19, 2013$22,000 · 1.75 in hail · 43 eventsAn upper level trough of low pressure over central Kansas, initiated a large area of strong to severe thunderstorms. This area of thunderstorms moved east across western Missouri, during the late afternoon and evening hours of May 19, 2013.
• Hail in Nebraska, May 19, 20131.25 in hail · 5 eventsA cold upper level low pressure system slowly moving east across the northern plains, was responsible for isolated severe thunderstorms during the late afternoon.
• Hail and Damaging Winds in Missouri, May 19 to 20, 20131 in hail · 6 eventsA warm front lifted northward through the region during the day on May 19th. Storms developed along boundary as it lifted north. Then later a MCS developed over western Missouri and moved east across the state.
• Hail in Florida, May 19, 20130.88 in hail · 1 eventA strong thunderstorm associated with diurnal convection produced nickel sized hail in southern Lake County.
• Hail and Damaging Winds in Kansas, May 19, 20132.5 in hail · 21 eventsThunderstorms developed in the post frontal area during the afternoon. Lapse rates supported elevated thunderstorms as a weak mid level wind maximum moved across the area.
• Hail in Kansas, May 19, 20131.75 in hail · 2 eventsA small cluster of thunderstorms moved northeast into Gove County during the afternoon, producing hail up to the size of golf balls near Quinter.
• Damaging Wind in Florida, May 19, 2013$1,000 · 1 eventAn upper level disturbance crossing over Florida enhanced sea breeze storms across the area. One of these storms produced small hail and thunderstorm wind gusts that knocked over one tree.
• Hail and Damaging Wind in Missouri, May 19, 2013$5,000 · 1 in hail · 3 eventsA very unstable airmass on May 19, 2013 led to the development of severe thunderstorms that produced large hail and damaging winds.
• Damaging Winds in Wisconsin, May 19, 2013$20,000 · 56 kt wind · 10 eventsThunderstorms began to develop across south central Minnesota during the afternoon of Sunday, May 19th. These storms started to accelerate northward near Owatonna, southeast to Blooming Prairie where the first report of damage was reported northwest of the town.
• Damaging Winds in Georgia, May 19, 2013$15,000 · 50 kt wind · 3 eventsScattered severe storms developed over NE Florida during the late afternoon over an unstable and moist airmass where the sea breezes and outflows converged. During the evening, and upper level disturbance over SE Georgia fueled severe storms where outflows converged.
• Hail and Damaging Winds in Kansas, May 19, 2013$2.2 million · 1.75 in hail · 4 eventsThis Sunday afternoon event was part of the same large-scale system that produced a couple severe thunderstorms the previous day.
• Hail and Damaging Winds in Kansas, May 19, 201363 kt wind · 8 eventsAn upper level trough of low pressure over central Kansas, initiated a large area of strong to severe thunderstorms. This area of thunderstorms moved east across extreme eastern Kansas, during the late afternoon and early evening hours of May 19, 2013.
• Damaging Wind in Arkansas, May 19, 2013$5,000 · 56 kt wind · 1 eventThunderstorms moved east into northwestern Arkansas during the evening of the 19th.
• Tornadoes and Flash Flood in Missouri, May 19 to 20, 2013$897,000 · EF1 · 79 eventsA strong negatively titled upper level trough developed over the central portions of the country. A slow moving cold front moved into the Missouri Ozarks.
• Hail and Damaging Winds in Illinois, May 19, 2013$1,000 · 1.75 in hail · 9 eventsA line of strong to severe thunderstorms moved northeast across parts of northwest Illinois producing large hail and damaging winds.
• Damaging Winds in Wisconsin, May 19 to 20, 2013$140,000 · 65 kt wind · 8 eventsSeveral lines of severe thunderstorms with damaging winds affected South Central Wisconsin during the late evening hours of May 19th, lasting into the early morning hours of May 20th.
• Hail and Damaging Winds in Kansas, May 19 to 20, 2013$25,000 · 65 kt wind · 11 eventsA strong negatively titled upper level trough developed over the central portions of the country. A slow moving cold front moved into through southeastern Kansas causing several rounds of severe thunderstorms producing widespread wind damage and hail.
• Hail in Kansas, May 20, 20130.75 in hail · 1 eventOutflow boundary, left over from the the previous evenings activity, caused penny sized hail across Linn County, during the early morning hours of May 20, 2013.
• Hail in Missouri, May 20, 20131.75 in hail · 4 eventsOutflow boundary, left over from the the previous evenings activity, caused a few hail producing thunderstorms, across portions of west central Missouri, during the early morning hours of May 20, 2013.
• Flash Flood in Virginia, May 20, 2013$200,000 · 1 eventA weak mid level flow existed over a moist lower atmosphere. Slow moving showers, with embedded thunderstorms, developed near dawn over Buchanan County.
• Flash Flooding and Lightning Strike in Florida, May 20, 20132 injured · 3 eventsA mid to upper level low pressure area over Florida combined with a moist east flow to produce periods of torrential downpours and thunderstorms over the course of the day across southeast Florida.
• Flash Flood in West Virginia, May 20, 2013$5,000 · 1 eventSlow moving convection during the early evening of the 19th dumped 1 to 2.5 inches of rain over a small area along the Dry Fork between Bradshaw and English. A weak mid level flow existed over a moist lower atmosphere.
• Tornadoes and Hail in Oklahoma, May 20 to 21, 201324 deaths · 212 injured · $2.0 billion · EF5 · 44 eventsA tornado outbreak occurred during the afternoon and evening hours of the 20th. Several tornadoes occurred from central Oklahoma down through south central Oklahoma near the Red River.
• Hail and Damaging Winds in Michigan, May 20, 2013$151,000 · 1.75 in hail · 18 eventsAn upper level disturbance interacted with an unstable airmass in place across Lower Michigan, producing multiple short line segments of strong to severe thunderstorms. These storms produced both large hail and damaging wind gusts during the afternoon hours.
• Hail and Damaging Winds in Michigan, May 20, 2013$46,000 · 1.75 in hail · 12 eventsSevere weather struck portions of Southwest Lower Michigan during the afternoon and evening hours of May 20th. Damaging winds and large hail accompanied the strongest storms.
• Damaging Wind in South Carolina, May 20, 2013$50,000 · 60 kt wind · 1 eventAn isolated severe thunderstorm produced wind damage in the Wilson area of Clarendon County. Many trees were down, a church steeple was blown off and shingles were torn off several roofs.
• Hail in Texas, May 20, 20131.75 in hail · 4 eventsA dryline extended from northeast to southwest through far western north Texas. To its east, supercells developed during the late afternoon hours, resulting in large hail.
• Hail and Damaging Winds in Florida, May 20, 20131 death · $500 · 50 kt wind · 9 eventsA short wave mid level trough was lingering over the southeast region. A piece of energy traveled over the area during peak heating and this instability and forcing combined with adequate mean layer moisture and forcing from the sea breezes spawned scattered afternoon and…
• Hail and Damaging Winds in Florida, May 20, 2013$5,000 · 1.75 in hail · 7 eventsAn upper level trough crossing Florida interacted with an already moist atmosphere to enhance sea breeze thunderstorms throughout the afternoon. Some of these storms produced hail up to golf ball sized, and damaging wind gusts.
• Hail in North Carolina, May 20, 20131 in hail · 4 eventsIsolated thunderstorms developed over the North Carolina mountains during the afternoon hours. A couple of the storms produced large hail.
• Tornado and Hail in Kansas, May 20, 2013EF0 · 5 eventsA series of storms moved across the area producing one tornado and some hail reports. Most of which were sub-severe.
• Hail in Kansas, May 20, 20131 in hail · 1 eventA large upper level trough of low pressure was observed across the Central Plains.
• Tornadoes and Hail in Oklahoma, May 20, 2013$1.4 million · EF2 · 29 eventsSevere thunderstorms developed along a nearly stationary frontal boundary over central Oklahoma during the early afternoon hours of the 20th.
• Tornado and Flash Flooding in Missouri, May 20 to 21, 2013$22,000 · EF1 · 13 eventsA large upper level trough of low pressure was observed across the Central Plains.
• Hail in Georgia, May 20, 20130.75 in hail · 1 eventA short wave mid level trough was lingering over the southeast region. A piece of energy traveled over the area during peak heating and this instability and forcing combined with adequate mean layer moisture and forcing from the sea breezes spawned scattered afternoon and…
• Tornadoes and Hail in Texas, May 20, 2013$100,000 · EF1 · 9 eventsSevere thunderstorms developed along a dryline across Brown County during the late afternoon and evening. Strong instability and wind shear were favorable for supercells. A supercell tracked across Brown County from Lake Brownwood to Blanket.
• Tornadoes and Flash Flood in Texas, May 20, 2013$69,000 · EF0 · 19 eventsThe dry line was once again active on the afternoon of May 20th. Thunderstorms developed along and ahead of the dry line, producing severe thunderstorms from Montague to Mills Counties.
• Hail and Damaging Winds in Michigan, May 20, 2013$19,000 · 1 in hail · 21 eventsSeveral severe thunderstorms developed north of I-69.
• Hail in Georgia, May 20, 20131 in hail · 2 eventsA few thunderstorms developed over the northeast Georgia mountains during the afternoon hours. One of the storms produced large hail.
• Damaging Wind in South Carolina, May 20, 2013$500 · 50 kt wind · 1 eventScattered diurnal showers and thunderstorms developed in the afternoon hours under the influence of weak high pressure.
• Hail in South Carolina, May 20, 20131 in hail · 2 eventsIsolated thunderstorms developed over the mountains of South Carolina during the afternoon hours. One of the storms produced large hail.
• Hail and Damaging Wind in Virginia, May 20, 2013$500 · 1 in hail · 2 eventsA warm front and a upper level disturbance moved through the region where a moist air mass was in place. Greater instability albeit minimal existed in the Central Foothills and thunderstorms did form in this region.
• Tornadoes in Kansas, May 20, 2013EF0 · 2 eventsHigh based thunderstorms developed rapidly across Stanton county and two landspouts were reported.
• Flash Flood in Virginia, May 20, 20131 eventA warm front and a upper level disturbance moved through the region where a moist air mass was in place. Greater instability albeit minimal existed in the Central Foothills and thunderstorms did form in this region.
• Tornado and Flash Flooding in Missouri, May 20 to 21, 2013EF1 · 24 eventsA line of severe storms moved through the region. There were numerous reports of large hail and damaging winds, as well as a couple of tornadoes and flash flooding.
• Tornado in Colorado, May 20, 2013EF0 · 1 eventA brief landspout caused no known damage in northwestern Alamosa County.
• Hail in Missouri, May 20, 20131.5 in hail · 3 eventsAn occluding low pressure system was located across the eastern Dakotas on May 20, 2013. A cold front was approaching the area from the west during the evening hours, along with the nose of a mid level speed maximum arriving from northeast Kansas.
• Hail and Damaging Winds in Iowa, May 20, 2013$169,000 · 1.75 in hail · 23 eventsA broad cyclonic circulation was in place over Iowa with the surface low over northeast South Dakota. A trough of low pressure extended south into eastern Nebraska. A cyclonic jet in the mid latitudes was nosing into Iowa.
• Damaging Wind in Georgia, May 20, 2013$800 · 50 kt wind · 1 eventScattered diurnal showers and thunderstorms developed in the afternoon hours under the influence of weak high pressure.
• Tornadoes and Hail in Arkansas, May 20, 20131 death · $304,000 · EF1 · 29 eventsSevere thunderstorms developed along a nearly stationary frontal boundary over central Oklahoma during the early afternoon hours of the 20th.
• Tornado and Flash Flood in Illinois, May 20 to 21, 20133 injured · EF2 · 14 eventsA line of severe storms moved through the region. There were numerous reports of large hail and damaging winds, as well as a couple of tornadoes and flash flooding.
• Hail and Damaging Winds in Illinois, May 20, 2013$495,000 · 70 kt wind · 26 eventsA vigorous upper-level disturbance interacting with a cold front triggered strong to severe thunderstorms west of the Mississippi River during the afternoon of May 20th.
• Hail in Iowa, May 20, 20131 in hail · 1 eventThunderstorms developed across northeast Iowa during the evening of May 20th ahead of a cold front that was approaching from the west. An isolated severe thunderstorm produced large hail near Ossian (Winneshiek County).
• Damaging Winds in Illinois, May 20, 201378 kt wind · 2 eventsAn occluding low pressure system was located across the eastern Dakotas on May 20, 2013. A cold front was approaching the area from the west during the evening hours, along with the nose of a mid level speed maximum arriving from northeast Kansas.
• Flash Flood and Hail in Arkansas, May 20 to 21, 2013$391,000 · 2 in hail · 31 eventsThe approach of an upper level low pressure system and associated cold front triggered thunderstorms in Arkansas, beginning on the evening of the 20th and continuing for much of the day on the 21st. A few of the storms became severe, while others produced heavy rain.
• Hail and Damaging Wind in Indiana, May 20, 201355 kt wind · 2 eventsStrong to severe thunderstorms moved across parts of northwest Indiana during the late evening of May 20th.
• Hail and Damaging Winds in New York, May 21, 2013$84,000 · 1.75 in hail · 36 eventsA warm front lingered across central New York State during the late afternoon and early evening hours of Tuesday, May 21st 2013. This front resulted in a broken line of storms that produced hail, along with wind damage.
• Hail and Damaging Wind in Illinois, May 20 to 21, 2013$30,000 · 1 in hail · 2 eventsA squall line with embedded small bow echoes moved eastward from southeast Missouri across southern Illinois. A damaging wind event and a large hail event occurred in association with the bow echoes.
• Hail and Damaging Winds in New York, May 21, 2013$30,000 · 1 in hail · 4 eventsThunderstorms moved across the North Country during the overnight hours. The thunderstorm winds downed trees and wires and produced one-inch diameter hail.
• Flash Flooding and Hail in Oklahoma, May 20 to 21, 20131.75 in hail · 8 eventsA shortwave trough progressed through the southern Plains during the first part of the day, resulting in thunderstorm development over west Texas early in the morning.
• Tornadoes and Damaging Winds in Indiana, May 21, 2013$230,000 · EF0 · 31 eventsA large line of storms swept across central Indiana overnight causing sporadic damage in many areas. One weak tornado occurred west of Brownsburg near North Salem.
• Hail and Damaging Winds in Arkansas, May 21, 2013$35,000 · 1 in hail · 4 eventsAn upper trough and an associated cold front moved into the Lower Mississippi Valley during the evening of May 21st, 2013. Several rounds of showers and thunderstorms developed ahead of the system affecting the Mid-South.
• Flash Flooding and Hail in Tennessee, May 21, 2013$30,000 · 1 in hail · 4 eventsAn upper trough and an associated cold front moved into the Lower Mississippi Valley during the evening of May 21st, 2013. Several rounds of showers and thunderstorms developed ahead of the system affecting the Mid-South.
• Damaging Winds in Kentucky, May 21, 2013$88,000 · 52 kt wind · 3 eventsA squall line with embedded small bow echoes moved eastward from southeast Missouri across western Kentucky. A few damaging wind events occurred in association with the bow echoes.
• Flash Flood in North Carolina, May 21, 20131 eventHeavy rainfall developed over the southern Piedmont and Sandhills region of North Carolina|during the early morning hours of the 20th as a dampening mid-level trough moved over the southern Appalachians.
• Hail in Michigan, May 21, 20130.75 in hail · 2 eventsA round of nocturnal thunderstorms produced locally heavy rain in northern Lower Michigan early on the 21st. Additional storms developed later in the day in the same area. In each case, one thunderstorm produced moderate sized hail.
• Hail and Damaging Wind in Texas, May 21, 20131.75 in hail · 3 eventsA vigorous upper level disturbance ejected out of New Mexico during the early morning hours. The system aided in developing isolated storms in a highly sheared environment across portions of the far southwestern Texas Panhandle and northern South Plains.
• Damaging Winds in Texas, May 21, 2013$15,000 · 53 kt wind · 2 eventsA vigorous low pressure system swept across the Great Plains during the early morning hours of the 21st. A shortwave trough rotated around the base of this system and helped initiate showers and thunderstorms over the southern Texas Panhandle.
• Flash Flooding in Oklahoma, May 21, 20132 eventsA cold front pushed into the region early on the 21st, stalling over east central and southeast Oklahoma. Persistent heavy rains led to some localized flash flooding across parts of this area.
• Hail and Damaging Winds in New York, May 21, 2013$163,000 · 2 in hail · 21 eventsThunderstorms developed along various boundaries within a warm and moist air mass over the region.
• Hail and Damaging Winds in Tennessee, May 21, 20131 injured · $414,000 · 1 in hail · 31 eventsThree separate squall line/bowing segments began impacting the Middle Tennessee area around mid day and ending around midnight. These systems produced mostly damaging straight line winds with some hail.
• Damaging Wind and Lightning Strike in South Carolina, May 21, 2013$11,000 · 50 kt wind · 2 eventsScattered diurnal showers and thunderstorms developed in the afternoon and evening hours under the influence of weak high pressure and a trough of low pressure east of the Appalachians.
• Hail and Damaging Winds in Texas, May 21, 2013$876,000 · 1.25 in hail · 36 eventsA cold front interacted with an existing dry line on the 21st of the month. A line of thunderstorms developed early in the day to the north of the Red River. The line continued to move south and east, moving into increasingly unstable air across north Texas.
• Flash Flood and Hail in North Carolina, May 21, 2013$11,000 · 1.5 in hail · 10 eventsScattered, disorganized thunderstorms developed over the North Carolina Piedmont, and eventually the mountains, during the afternoon hours. A few of the storms became severe, producing large hail and wind damage.
• Hail and Damaging Winds in New York, May 21, 20132.5 in hail · 36 eventsA very warm and humid air mass was in place across eastern New York on Tuesday, May 21st. A slow moving frontal boundary was situated just north of the area across the Saint Lawrence River Valley along the United States-Canadian border.
• Hail and Damaging Winds in Texas, May 21, 20131 death · $60,000 · 1 in hail · 27 eventsA strong upper level trough across the southern Great Basin ejected out into the Southern Plains during the day on May 21st.
• Flash Flood and Hail in South Carolina, May 21, 2013$58,000 · 1 in hail · 6 eventsScattered severe storms produced hail up to 1 inch across areas of the Midlands of South Carolina. A couple of trees fell on cars and homes.
• Flash Flooding and Hail in Mississippi, May 21, 2013$1.1 million · 1 in hail · 7 eventsAn upper trough and an associated cold front moved into the Lower Mississippi Valley during the evening of May 21st, 2013. Several rounds of showers and thunderstorms developed ahead of the system affecting the Mid-South.
• Hail and Damaging Winds in Kentucky, May 21, 2013$2,000 · 1 in hail · 54 eventsDuring the late afternoon and evening hours on May 21, widespread strong to severe thunderstorms erupted across eastern Kentucky. The storms formed in a warm and moist air mass ahead of an approaching cold front that was moving out of the central and southern Plains.
• Hail in Connecticut, May 21, 20131 in hail · 4 eventsA backdoor cold front pushing south through New England produced isolated severe thunderstorms in north central Connecticut during the afternoon and evening.
• Hail and Damaging Wind in Massachusetts, May 21, 20133 injured · $5,000 · 1 in hail · 10 eventsA backdoor cold front pushing south through New England produced isolated severe thunderstorms in western and central Massachusetts during the afternoon and evening.
• Flash Flooding and Hail in Tennessee, May 21, 2013$81,000 · 1 in hail · 20 eventsAn outflow boundary from a complex of thunderstorms building across the Mid South interacted with moderate to strongly unstable air across Eastern Tennessee mainly north of interstate 40.
• Hail and Damaging Winds in South Carolina, May 21, 20131 in hail · 3 eventsIsolated thunderstorms developed over the mountains of South Carolina. A few of the storms became severe, producing large hail and wind damage.
• Hail and Damaging Wind in Massachusetts, May 21, 20131 in hail · 3 eventsA very warm and humid air mass was in place across western Massachusetts on Tuesday, May 21st. A slow moving frontal boundary was situated just north of the area across the Saint Lawrence River Valley along the United States-Canadian border.
• Damaging Winds in Kentucky, May 21, 201352 kt wind · 2 eventsA weak shortwave moved across southern Kentucky on May 21st. During the early afternoon hours, a broken line of storms developed along Interstate 65 near Bowling Green. This line expanded to the north and south as it moved across central Kentucky during the mid-afternoon.
• Damaging Wind in Missouri, May 21, 201352 kt wind · 1 eventAn upper trough and an associated cold front moved into the Lower Mississippi Valley during the evening of May 21st, 2013. Several rounds of showers and thunderstorms developed ahead of the system affecting the Mid-South.
• Flash Flooding in Puerto Rico, May 21, 20136 eventsAn active Tropical Wave, combined with daytime heating and sea breeze convergence to produce scattered to numerous showers and isolated to scattered thunderstorms across Puerto Rico.
• Hail in Missouri, May 21, 20130.75 in hail · 1 eventA cluster of strong thunderstorms moved northeast from Arkansas, producing dime-size hail in southeast Missouri. The storms occurred in a moist southwest wind flow ahead of a cold front over Missouri.
• Hail and Damaging Winds in Arkansas, May 21, 2013$35,000 · 55 kt wind · 5 eventsA strong upper level trough across the southern Great Basin ejected out into the Southern Plains during the day on May 21st.
• Hail and Damaging Winds in Connecticut, May 21, 20131.75 in hail · 7 eventsA very warm and humid air mass was in place across northwestern Connecticut on Tuesday, May 21st. A slow moving frontal boundary was situated just north of the area across the Saint Lawrence River Valley along the United States-Canadian border.
• Hail in Georgia, May 21, 20131 in hail · 3 eventsAn upper ridge was in place over the Southeast on the 21s, with an upper low over southeast Georgia and northeast Florida. A very unstable airmass remained in place, and afternoon showers and thunderstorms developed across the state.
• Damaging Winds in Michigan, May 21, 2013$2,000 · 52 kt wind · 4 eventsA severe thunderstorm impacted Tuscola County.
• Hail in Georgia, May 21, 20131 in hail · 1 eventA couple of isolated severe thunderstorms produced some large hail.
• Damaging Winds in New York, May 21, 2013$35,000 · 55 kt wind · 3 eventsOn the afternoon and evening of May 21st, a stationary boundary was draped across northern New York.
• Damaging Wind in Kentucky, May 21, 2013$2,000 · 50 kt wind · 1 eventA line of thunderstorms developed and moved eastward across Kentucky during the afternoon and early evening. Some of these storms were capable of producing damaging winds.
• Hail and Damaging Winds in New Hampshire, May 21, 2013$15,000 · 1.25 in hail · 7 eventsA backdoor cold front pushing south through New England produced isolated severe thunderstorms in southwest New Hampshire during the afternoon and evening.
• Damaging Winds in Georgia, May 21, 201350 kt wind · 2 eventsA upper level cold pool aloft enhanced diurnal instability over a moist airmass. These ingredient fueled a couple of severe storms that initiated along the sea breezes and outflows during the afternoon and evening.
• Hail in North Carolina, May 21, 20131 in hail · 2 eventsThe combination of an upper level disturbance passing over the region and daytime heating triggered spotty shower and thunderstorm activity across the mountains. A few storms became severe for a short while during the evening, and produced large hail.
• Damaging Wind in Kentucky, May 21, 2013$1,000 · 50 kt wind · 1 eventA long lived convective complex originated on the 20th across the southern Plains. The complex moved across Tennessee and Kentucky during the day on the 21st, reaching northeast Kentucky by early evening.
• Damaging Winds in West Virginia, May 21, 2013$50,000 · 52 kt wind · 12 eventsA long lived convective complex originated on the 20th across the southern Plains. The complex moved across Tennessee and Kentucky during the day on the 21st, reaching western West Virginia during that evening.
• Damaging Winds in Louisiana, May 21, 2013$45,000 · 55 kt wind · 21 eventsA strong upper level trough across the southern Great Basin ejected out into the Southern Plains during the day on May 21st.
• Damaging Winds in Mississippi, May 21, 2013$220,000 · 60 kt wind · 18 eventsA line of severe storms associated with an advancing cold front moved across the region. A few storms caused wind damage in the form of blown down trees and power lines. Some of these trees fell on structures.
• Damaging Wind in Kentucky, May 21, 2013$2,000 · 52 kt wind · 1 eventA bowing line of thunderstorms moved rapidly east across western Kentucky, producing strong winds and isolated wind damage. The storms occurred in a moist southwest wind flow ahead of a cold front over Missouri.
• Damaging Wind in Georgia, May 21, 201350 kt wind · 1 eventIsolated thunderstorms developed over the mountains of northeast Georgia during the late afternoon hours. One of the storms caused a little wind damage.
• Damaging Winds in Vermont, May 21, 2013$7,000 · 50 kt wind · 2 eventsOn the afternoon and evening of May 21st, a stationary boundary was draped across northern New York into northern Vermont.
• Hail and Damaging Wind in West Virginia, May 21, 20131 in hail · 2 eventsScattered showers and thunderstorms developed in the evening along a weak outflow boundary. Isolated severe thunderstorms developed across the West Virginia panhandle and Washington county, Pennsylvania.
• Damaging Wind in Pennsylvania, May 21, 2013$2,000 · 50 kt wind · 1 eventScattered showers and thunderstorms developed in the evening along a weak outflow boundary. Isolated severe thunderstorms developed across the West Virginia panhandle and Washington county, Pennsylvania.
• Damaging Winds in Arkansas, May 21, 2013$94,000 · 60 kt wind · 3 eventsA line of severe storms associated with an advancing cold front moved across the region. A few storms caused wind damage in the form of blown down trees and power lines. Some of these trees fell on structures.
• Damaging Winds in Louisiana, May 21, 2013$70,000 · 60 kt wind · 5 eventsA line of severe storms associated with an advancing cold front moved across the region. A few storms caused wind damage in the form of blown down trees and power lines. Some of these trees fell on structures.
• Damaging Wind in Vermont, May 21, 201350 kt wind · 1 eventA very warm and humid air mass was in place across southern Vermont on Tuesday, May 21st. A slow moving frontal boundary was situated just north of the area across the Saint Lawrence River Valley along the United States-Canadian border.
• Flash Flood and Damaging Wind in Virginia, May 22, 2013$5,000 · 50 kt wind · 2 eventsSevere thunderstorms formed along an outflow boundary across the Mid South and moved into the Southern Appalachians during the afternoon and early evening. The |result of the early Spring event was mostly wind damage along with some small hail.
• Hail and Damaging Winds in Louisiana, May 22 to 23, 2013$315,000 · 89 kt wind · 7 eventsA few isolated severe storms occurred across Louisiana as a weak disturbance traveled across the region.
• Hail and Damaging Wind in Texas, May 22, 20131.75 in hail · 3 eventsEarly morning severe weather struck Southeast Texas with hail and a high wind gust reported.
• Flash Flood and Damaging Wind in Louisiana, May 22, 2013$100,000 · 70 kt wind · 3 eventsAn outflow boundary from overnight thunderstorms provided a focus for the development of additional thunderstorms during the morning and early afternoon hours.
• Lightning Strike in Florida, May 22, 2013$500 · 2 eventsHigh moisture and instability led to thunderstorms developing over parts of southeast Florida.
• Hail and Damaging Winds in New York, May 22, 20131 injured · $200,000 · 2.5 in hail · 52 eventsA warm front lifted north of New York State during the late morning into the evening hours of Wednesday, May 22nd 2013. This front resulted in a cluster of storms that produced large hail and wind damage.
• Hail and Damaging Winds in North Carolina, May 22, 2013$15,000 · 1 in hail · 14 eventsNumerous thunderstorms developed over the region ahead of a cold front. The storms produced a mix of hail and damaging winds across western North Carolina.
• Hail in North Carolina, May 22, 20131 in hail · 4 eventsScattered strong to severe thunderstorms developed during the afternoon and evening due to strong instability associated with an approaching upper level trough and the associated cold front.
• Flash Flooding and Damaging Winds in New York, May 22, 2013$100,000 · 60 kt wind · 16 eventsAs a frontal boundary moved into the region, some areas received heavy rainfall from thunderstorms during the day of Tuesday, May 21st and into the early morning hours on May 22nd. This frontal boundary become stationary across the region for Wednesday, May 22nd.
• Hail and Damaging Winds in New York, May 22, 2013$45,000 · 1 in hail · 9 eventsOn the afternoon and evening of May 22nd, a stationary boundary remained draped across northern New York.
• Flash Flood and Hail in Virginia, May 22, 20131 in hail · 7 eventsWidely scattered strong to severe thunderstorms developed during the afternoon and evening due to strong instability associated with an approaching upper level trough and the associated cold front.
• Hail and Damaging Winds in Tennessee, May 22, 20131 in hail · 10 eventsSevere thunderstorms formed along an outflow boundary across the Mid South and moved into the Southern Appalachians during the afternoon and early evening. The result of the early Spring event was mostly wind damage along with some small hail.
• Hail and Damaging Winds in New York, May 22, 2013$123,000 · 1.75 in hail · 24 eventsWith a warm and moist airmass in place over the region, thunderstorms developed along lake breezes during the afternoon and evening. The persistent storms were prolific hail producers not only in size but quantity. At times it was reported the hail completely covered the ground.
• Damaging Winds in West Virginia, May 22, 20132 injured · $126,000 · 65 kt wind · 2 eventsStrong heating occurred in a moist and unstable environment, well ahead of an approaching cold front in the lower Ohio Valley. Thunderstorms developed in West Virginia during the afternoon. A few storms pulsed briefly to severe limits.
• Hail and Damaging Winds in West Virginia, May 22, 2013$4,000 · 1 in hail · 6 eventsHigh pressure over the Atlantic led to southerly flow to transport warm humid conditions in the Mid Atlantic. A trough axis led to the development of thunderstorms across the west of the Blue Ridge.
• Hail and Damaging Winds in South Carolina, May 22, 20131 in hail · 11 eventsScattered thunderstorms developed over western South Carolina during the afternoon hours. A few of the storms produced damaging winds and a little hail.
• Damaging Wind in Kentucky, May 22, 201352 kt wind · 1 eventA pre-frontal trough moved across the Lower Ohio Valley on May 22nd. Several broken lines of convection brought gusty showers to central and eastern Kentucky during the afternoon hours. One storm became severe across Barren County.
• Hail and Damaging Winds in Pennsylvania, May 22, 2013$142,000 · 1 in hail · 14 eventsThunderstorms developed just ahead of a cold front the afternoon of May 22nd with some of the storms producing damaging winds.
• Flash Flood in Vermont, May 22, 20131 eventAs a frontal boundary moved into the region, some areas received heavy rainfall from thunderstorms during the day of Tuesday, May 21st and into the early morning hours on May 22nd. This frontal boundary become stationary across the region for Wednesday, May 22nd.
• Damaging Winds in Michigan, May 22, 2013$2,000 · 52 kt wind · 7 eventsA few severe thunderstorms impacted the Detroit Metro Area with isolated wind gusts up to 60 mph.
• Damaging Wind in Alabama, May 22, 2013$10,000 · 52 kt wind · 1 eventAn isolated severe thunderstorm developed along an outflow boundary that moved west through north Alabama out of northwest Georgia.
• Hail and Damaging Wind in Massachusetts, May 22, 2013$30,000 · 2.25 in hail · 7 eventsA warm front moved northward over Southern New England, providing lift for showers and thunderstorms to develop across much of western Massachusetts. There was enough cold air aloft for some very large hail (for New England) to fall from these storms.
• Damaging Winds in Ohio, May 22, 2013$3,000 · 50 kt wind · 2 eventsAn area of low pressure moved across the central Great Lakes. A cold front trailing the low swept east across Ohio causing showers and thunderstorms to develop. A couple of the stronger thunderstorms became severe.
• Damaging Winds in Virginia, May 22, 2013$2,000 · 52 kt wind · 4 eventsHigh pressure over the Atlantic led to southerly flow to transport warm humid conditions in the Mid Atlantic. A trough axis led to the development of thunderstorms across the west of the Blue Ridge.
• Hail and Damaging Wind in Maryland, May 22, 2013$1,000 · 1 in hail · 3 eventsHigh pressure over the Atlantic led to southerly flow to transport warm humid conditions in the Mid Atlantic. A trough axis led to the development of thunderstorms across the west of the Blue Ridge.
• Hail and Damaging Winds in Pennsylvania, May 22, 2013$93,000 · 53 kt wind · 24 eventsA belt of seasonably strong lower-mid tropospheric flow in the Ohio Valley on the eastern periphery of a large-scale upper trough impinged on a moist and unstable environment over central Pennsylvania and resulted in severe thunderstorms during the afternoon and evening.
• Damaging Winds in Georgia, May 22, 201350 kt wind · 2 eventsThunderstorms caused a little wind damage over northeast Georgia.
• Flash Flood in Virginia, May 22, 20131 eventHigh pressure over the Atlantic led to southerly flow to transport warm humid conditions in the Mid Atlantic. A trough axis led to the development of thunderstorms across the west of the Blue Ridge.
• Damaging Winds in Pennsylvania, May 22, 201350 kt wind · 5 eventsA warm front lifted north of the area during the late morning into the evening hours of Wednesday, May 22nd 2013. This front resulted in a cluster of storms that produced large hail and wind damage.
• Damaging Winds in Georgia, May 22, 2013$3,000 · 50 kt wind · 3 eventsAn upper trough moved through the Mississippi Valley during the day and into the evening on the 22nd. A shortwave moved across the Southeast, helping to focus shower and thunderstorm development.
• Damaging Wind in Pennsylvania, May 22, 201350 kt wind · 1 eventA weakening line of thunderstorms moved through parts of eastern Pennsylvania on the evening of the 22nd. One did produce wind damage in Monroe County.
• Flash Flooding and Hail in Oklahoma, May 23, 2013$105,000 · 2.5 in hail · 18 eventsModerate northwest flow aloft existed over Oklahoma, with a diffuse frontal boundary extending west-east across the center of the state.
• Hail in Kansas, May 23, 20130.88 in hail · 1 eventAn isolated marginally severe thunderstorm occurred early in the morning.
• Flash Flooding in New York, May 23, 20139 eventsA pre-frontal trough ahead of a cold front triggered numerous showers and thunderstorms. These storms produced heavy rain, which resulted in flash flooding across portions of The Lower Hudson Valley and New York City.
• Flash Flood and Damaging Winds in Connecticut, May 23, 2013$6,000 · 52 kt wind · 3 eventsAn approaching pre-frontal trough, ahead of a cold front, triggered isolated severe thunderstorms over Fairfield and New Haven Counties during the afternoon. These storms also produced heavy rain, which resulted in isolated flash flooding in Fairfield County.
• Lightning Strikes in West Virginia, May 23, 20132 injured · 2 eventsMore scattered showers and thunderstorms formed ahead of a cold front.
• Tornadoes and Hail in Texas, May 23, 2013$335,000 · EF1 · 15 eventsDriven southwest by outflow from a complex of thunderstorms in Oklahoma early this morning, a frontal boundary moved into the northeast South Plains and northern Rolling Plains by noon ahead of very moist easterly winds.
• Hail and Damaging Wind in Pennsylvania, May 23, 201350 kt wind · 2 eventsAn approaching cold front triggered a series of thunderstorms across Eastern Pennsylvania during the afternoon and evening of the 23rd. An isolated severe thunderstorm occurred in the Lehigh Valley.
• Hail and Damaging Wind in Virginia, May 23, 2013$1,000 · 1 in hail · 2 eventsA cold front was approaching from the west. Ahead of it temperatures reached their convective temps and wind speeds increased. Thunderstorms formed along a lee trough.
• Lightning Strike in New Jersey, May 23, 2013$5,000 · 1 eventAn approaching pre-frontal trough, ahead of a cold front, triggered thunderstorms over Northeast New Jersey during the afternoon, causing a lightning strike in Bergen County.
• Hail in South Carolina, May 23, 20131 in hail · 2 eventsAn isolated thunderstorm produced large hail over Spartanburg County.
• Flash Flooding in New Jersey, May 23, 20133 eventsA pre-frontal trough ahead of a cold front triggered numerous showers and thunderstorms. These storms produced heavy rain, which resulted in flash flooding across portions of Bergen County, New Jersey.
• Hail and Damaging Wind in New Mexico, May 23, 2013$6,000 · 1.75 in hail · 3 eventsA dryline was located across the Permian Basin and the Trans Pecos, and a cold front was in the Texas panhandle. Good lower level moisture was present to the east of the dryline, and there was plentiful upper level moisture available. The atmosphere was very unstable.
• Hail and Damaging Wind in New York, May 23, 2013$35,000 · 1.5 in hail · 2 eventsAn isolated severe thunderstorm developed ahead of an approaching cold front. Initially over northwest Pennsylvania, the storm intensified as it moved north into Allegany County.
• Flash Flood in North Carolina, May 23, 20131 eventHeavy rainfall fell over portions of the coastal plain counties of North Carolina during the afternoon and early evening hours of the 23rd as a slow moving mid-level trough moved |through the area.
• Hail in West Virginia, May 23, 20130.88 in hail · 1 eventAn upper level disturbance produced scattered afternoon thunderstorms and small hail.
• Flash Flood in New Jersey, May 23, 20131 eventA series of thunderstorms with heavy downpours ultimately caused flash flooding in eastern Morris County. Event precipitation totals averaged two to three inches.
• Hail and Damaging Winds in Virginia, May 23, 2013$2,000 · 52 kt wind · 3 eventsInstability ahead of an approaching cold front across the Appalachian chain triggered widely scattered thunderstorms, a few of which reached severe levels. Lifted index values were observed to be in the -4 to -7 range, while CAPE exceeded 1000 J/kg.
• Damaging Winds in West Virginia, May 23, 2013$1,000 · 52 kt wind · 2 eventsA cold front was approaching from the west. Ahead of it temperatures reached their convective temps and wind speeds increased. Thunderstorms formed along a lee trough.
• Hail in Texas, May 23, 20131 in hail · 1 eventIsolated thunderstorms developed over the south central Texas Panhandle during the late afternoon hours of the 23rd.
• Hail in Florida, May 23, 20131.5 in hail · 2 eventsScattered strong diurnal convection become locally severe as a storm produced large hail between Highway 520 and Highway 528 in rural eastern Orange County.
• Flash Flooding and Hail in Texas, May 23, 2013$100,000 · 1.75 in hail · 26 eventsA dryline was located across the Permian Basin and the Trans Pecos, and a cold front was in the Texas panhandle. Good lower level moisture was present to the east of the dryline, and there was plentiful upper level moisture available. The atmosphere was very unstable.
• Tornado and Hail in Texas, May 23, 2013$100,000 · EF0 · 46 eventsAn outflow boundary crossed the Red River into North Texas and interacted with a dryline and a very moist and unstable airmass across the Big Country to produce a supercell thunderstorm in Fisher County and a long track bow echo that originated in Haskell County.
• Flash Flooding and Flooding in Vermont, May 23 to 28, 2013$2.1 million · 9 eventsHeavy rainfall from training showers and thunderstorms produced flash flooding across Chittenden and Lamoille Counties in Vermont beginning in the afternoon and evening of May 23.
• Hail in Wyoming, May 23, 20130.88 in hail · 1 eventThunderstorms developed over the Absaroka Range and moved north across the Cody Foothills. One strong storm produced hail in and around Cody.
• Flash Flooding in Maryland, May 23, 20135 eventsA cold front was approaching from the west. Ahead of it temperatures reached their convective temps and wind speeds increased. Thunderstorms formed along a lee trough.
• Flash Flooding in Texas, May 23 to 24, 20135 eventsA complex of thunderstorms produced very heavy rain and reports of flash flooding across the Concho Valley and Northwest Hill Country during the late night of May 23 and into the early morning of May 24.
• Hail in South Carolina, May 23, 20130.75 in hail · 1 eventThunderstorms developed along and ahead of a pre-frontal trough. One of these thunderstorms produced small hail north of Timmonsville during the evening.

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.