North Central Severe Weather and Tornadoes

Losses, 2024 dollars

$1.2 billion

Losses at the time

$941 million

Deaths

1

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 13, 20170.88 in hail · 1 eventA thunderstorm produced nickel sized hail in the Custer area.
• Hail in New York, May 14, 20170.88 in hail · 1 eventShowers and thunderstorms developed ahead of and along an advancing cold front across the states of New York and Pennsylvania Sunday afternoon. As the storms moved to the east, an isolated storm produced nickel-sized hail in the Binghamton area.
• Hail in New York, May 14, 2017$2,000 · 1 in hail · 5 eventsA thunderstorm moving across the Finger Lakes dropped pea- to dime-sized hail on Rochester and the southeast suburbs, including the annual Lilac Festival. The storm merged with another cell over northwest Ontario County. That storm produced one-inch hail just east of Canandaigua.
• Damaging Winds in New Jersey, May 14, 20171 death · 6 injured · $24,000 · 6 eventsAn upper level low triggered strong thunderstorms over Northeast New Jersey.
• Hail in New Jersey, May 14, 20170.75 in hail · 2 eventsA couple of thunderstorms produced sub-severe hail just under an inch in north central New Jersey.
• Damaging Winds in Texas, May 14, 201766 kt wind · 3 eventsConvection developed along a dryline that was located across the far western TX Panhandle.
• Hail and Damaging Wind in Kansas, May 14, 20171.75 in hail · 9 eventsA weak Pacific cold front moved into northwest Kansas Sunday morning and remain nearly stationary from northern into west central Kansas during the day. A dryline mixed into western Kansas and extended near a line from Liberal to Scott City by late afternoon.
• Hail and Damaging Winds in Texas, May 14, 20171.5 in hail · 3 eventsNumerous high based thunderstorms developed late this afternoon from the central South Plains northeast to the far southeast Panhandle within a persistent axis of diffluence aloft.
• Damaging Wind in Nebraska, May 14, 201757 kt wind · 1 eventA thunderstorm produced strong winds in northeast Dawes County.
• Damaging Winds in Nebraska, May 14 to 15, 2017$25,000 · 61 kt wind · 2 eventsDuring the late evening hours on May 14th, thunderstorms with damaging wind gusts brought down a Viaero communications tower south of White Clay, in northern Sheridan County.
• Damaging Wind in South Dakota, May 14, 201752 kt wind · 1 eventA severe thunderstorm clipped far southern Oglala Lakota County, bringing strong wind gusts to the Pine Ridge area.
• Hail in Minnesota, May 15, 20170.88 in hail · 2 eventsThunderstorms dropped hail near Cloquet, MN during the wee hours of the morning on May 15th. There were reports of hail about the size of pennies and nickels.
• Damaging Wind in South Dakota, May 15, 201770 kt wind · 1 eventA thunderstorm produced wind gusts to 80 mph west of Parmalee.
• Damaging Winds in South Dakota, May 15, 20171 injured · $60,000 · 65 kt wind · 4 eventsThunderstorms were moving into portions of Douglas County in the dawn hours when one of the storms produced a wet microburst resulting in very strong winds and widespread damage. Most of the damage was in and immediately around the town of Armour, SD.
• Hail and Lightning Strikes in Minnesota, May 15 to 16, 2017$475,000 · 1.75 in hail · 10 eventsMonday afternoon thunderstorms, and associated lightning strikes, caused damage to a home in Northfield. Another thunderstorm early Tuesday morning, and associated lightning strike, caused damage to a home in Woodbury.
• Flash Flooding and Hail in Iowa, May 15, 2017$209,000 · 2.5 in hail · 51 eventsDuring the day on the 15th, much of Iowa found itself firmly in the warm sector with a warm front/stationary front eventually settling across northern Iowa.
• Hail and Damaging Winds in Wisconsin, May 15, 2017$378,000 · 59 kt wind · 14 eventsTwo rounds of thunderstorms moved across western Wisconsin on May 15th. The first formed in the afternoon and dropped some dime sized hail across portions of Juneau County.
• Lightning Strike in Wisconsin, May 15, 2017$60,000 · 1 eventChippewa Falls fire crews reported a lightning strike caused $60,000 worth of damage to a home in the Town of Lafayette, Monday afternoon. No one was hurt in that fire, but the home did suffer fire, smoke and heat damage.
• Hail in Colorado, May 15, 20171.25 in hail · 2 eventsA severe thunderstorm produced hail up to half dollar in size in Cheyenne Wells and quarter size hail north of town.
• Tornado and Hail in Iowa, May 15, 2017$905,000 · EF0 · 34 eventsSevere thunderstorms moved across northeast Iowa during the evening of May 15th. These storms produced a small, short-lived tornado between Fort Atkinson and Calmar (Winneshiek County).
• Hail and Damaging Winds in Wisconsin, May 15, 2017$14,000 · 2.5 in hail · 18 eventsA surge of warm and moist air aloft brought rounds of strong to severe thunderstorms to southern WI. Large hail and tree damage occurred.
• Hail in Wyoming, May 15, 20171 in hail · 3 eventsA thunderstorm that moved over the Sheridan area produced up to 1 inch diameter hail.
• Hail and Damaging Wind in Wyoming, May 15, 20172 in hail · 5 eventsA supercell thunderstorm tracked eastward across far northern Campbell and northern Crook Counties. The storm produced large hail and wind gusts around 60 mph.
• Hail in Kansas, May 15, 2017$200 · 2 in hail · 9 eventsStrong to severe thunderstorms moved northeast across Northwest Kansas. The largest hail that fell occurred with these storms was the size of a tea cup and was reported at Marienthal.
• Hail in Colorado, May 15, 20171 in hail · 2 eventsA severe storm produced hail up to the size of quarters.
• Hail and Damaging Winds in Illinois, May 15, 20172 in hail · 6 eventsAn isolated supercell moved over portions of northern Illinois and produced hail up to two inches in diameter. Later in the evening, a line of thunderstorms moved across northern Illinois producing damaging winds.
• Hail and Damaging Winds in Oklahoma, May 15, 20171.75 in hail · 9 eventsA dryline set up across the western combined Panhandles provided a relatively sharp moisture axis with warm, unstable airmass across the central and eastern Panhandles with good low level moisture.
• Hail and Damaging Winds in Texas, May 15, 20172.75 in hail · 39 eventsA dryline set up across the western combined Panhandles provided a relatively sharp moisture axis with warm, unstable airmass across the central and eastern Panhandles with good low level moisture.
• Hail in Montana, May 15, 20171 in hail · 2 eventsA few severe thunderstorms moved across Southeast Montana during the late afternoon and early evening hours of the 15th. The main impact from these thunderstorms was large hail.
• Hail and Damaging Winds in Kansas, May 15, 20172.5 in hail · 18 eventsAn elevated mixed layer with H7 temperatures at 10C persisted over western Kansas from 14th, but a subtle short wave trough and convergence along a dryline were sufficient enough to support development of widely scattered thunderstorms late in the day.
• Hail in Wyoming, May 15, 20171 in hail · 1 eventA thunderstorm produced large hail over central Goshen County.
• Hail in Wyoming, May 15, 20171 in hail · 1 eventA thunderstorm briefly became severe over west central Campbell County, producing quarter sized hail near Echeta.
• Hail in Wyoming, May 15, 20171 in hail · 3 eventsA severe thunderstorm tracked across northern Weston County, producing hail to quarter size.
• Hail and Damaging Winds in Nebraska, May 15, 2017$75,000 · 1 in hail · 13 eventsA couple small multicell thunderstorm clusters produced severe winds on this Monday evening. Isolated thunderstorms initiated over northwest Kansas during the late afternoon hours. As additional storms developed, multicell clusters formed.
• Damaging Wind in Kansas, May 15, 2017$25,000 · 56 kt wind · 1 eventPart of a small multicell thunderstorm cluster clipped northwest Phillips County, producing severe winds on this Monday evening. Isolated thunderstorms initiated over northwest Kansas during the late afternoon hours.
• Hail in Wyoming, May 15, 20171 in hail · 1 eventA thunderstorm briefly became severe across southern Weston County. Quarter sized hail was reported southeast of Clareton.
• Hail in Nebraska, May 15, 20171.5 in hail · 1 eventA severe thunderstorm produced ping-pong ball size hail east of Haigler.
• Flash Flood and Flood in Minnesota, May 15 to 16, 2017$10,000 · 1.5 in hail · 20 eventsA couple rounds of thunderstorms with large hail moved across portions of southeast Minnesota during the late evening hours of May 15th. These storms dropped the hail across portions of Dodge, Olmsted, Fillmore, Houston and Wabasha Counties.
• Hail in Wisconsin, May 15, 20170.75 in hail · 1 eventThunderstorms that moved across east central Wisconsin produced heavy rain and isolated large hail.
• Damaging Wind in Illinois, May 15, 201750 kt wind · 1 eventSevere thunderstorms developed along and north of a warm front Monday evening, bringing large hail and damaging winds to areas near a line from Decorah, IA to Rockford IL. A few reports of tree damage were seen with these storms.
• Hail in Nebraska, May 15, 2017$5,000 · 1 in hail · 3 eventsIsolated thunderstorms occurred in Hayes County and Holt County during the late evening hours in on May 15th. Quarter size hail was reported in Hayes County, with damage occurring to siding at a home 2 miles west of Hamlet.
• Damaging Wind in Iowa, May 15, 201752 kt wind · 1 eventSevere thunderstorms developed along and north of a warm front Monday evening, bringing large hail and damaging winds to areas near a line from Decorah, IA to Rockford IL. A few reports of tree damage were seen with these storms.
• Hail in South Dakota, May 15, 20171 in hail · 1 eventA thunderstorm produced quarter sized hail west of Hereford.
• Tornadoes and Flash Flooding in Kansas, May 16, 2017EF1 · 46 eventsA strong shortwave trough over the southwestern states moved east northeastward toward the central and southern Plains as another low pressure system dropped into the Pacific Northwest.
• Hail in South Dakota, May 15, 20170.75 in hail · 1 eventAn overnight thunderstorm produced hail in the Union Center area.
• Damaging Wind in South Dakota, May 16, 201752 kt wind · 1 eventA severe thunderstorm moved northeast from Nebraska across eastern Bennett County during the overnight hours. The storm produced wind gusts around 60 mph and small hail.
• Hail in South Dakota, May 16, 20171 in hail · 2 eventsA couple thunderstorms lifting north across the region brought quarter size hail to parts of Day and Hamlin counties.
• Damaging Winds in Iowa, May 16, 201770 kt wind · 4 eventsSevere thunderstorms moved through the area that resulted in strong wind impacting portions of the Iowa Great Lakes region.
• Lightning Strike in Michigan, May 16, 2017$40,000 · 1 eventLightning struck a house during the early morning hours of May 16th, causing considerable damage to the inside of house, blowing out windows, and damaging the siding. In addition the deck in the back of the house was also damaged.
• Damaging Winds in Minnesota, May 16, 2017$10,000 · 63 kt wind · 5 eventsSevere thunderstorms produced strong winds in portions of southwest Minnesota during the early morning hours of the 16th.
• Hail and Damaging Winds in Iowa, May 16 to 17, 2017$318,000 · 1.75 in hail · 49 eventsAhead of a cold frontal boundary temperatures throughout Iowa were able to reach into the upper 80s to around 90 along with dew points into the mid 60s.
• Tornadoes and Hail in Nebraska, May 16 to 17, 2017$108,000 · EF1 · 21 eventsThunderstorms produced damaging winds and some low-end severe hail over several counties in south central Nebraska on this Tuesday evening and night. Scattered single cell thunderstorms began developing around 3 PM CST from central Kansas northeast into southern Nebraska.
• Hail and Damaging Winds in Kansas, May 16 to 17, 2017$75,000 · 1 in hail · 12 eventsThunderstorms produced damaging winds and some severe sized hail over several counties in north central Kansas on this Tuesday evening. Scattered single cell thunderstorms began developing around 3 PM CST from central Kansas northeast into southern Nebraska.
• Damaging Wind and High Wind in New Mexico, May 16, 201754 kt wind · 10 eventsAn unseasonably cold storm system moving east across New Mexico produced a wide variety of weather for mid-May. Temperatures were up to 20 degrees below normal in some areas.
• Tornado and Hail in Oklahoma, May 16, 2017EF0 · 12 eventsAn active day of severe weather across central and eastern TX and OK Panhandles. An upper low analyzed near Las Vegas, NV in the morning opened as it bottoms out over srn NM in the afternoon before lifting and deepening again as it ejected over the Panhandles later that evening.
• Tornadoes and Hail in Texas, May 16, 2017EF2 · 31 eventsAn active day of severe weather across central and eastern TX and OK Panhandles. An upper low analyzed near Las Vegas, NV in the morning opened as it bottoms out over srn NM in the afternoon before lifting and deepening again as it ejected over the Panhandles later that evening.
• Hail in Minnesota, May 16, 2017$850,000 · 2.5 in hail · 11 eventsThunderstorms developed during the late afternoon over southeastern and east central Minnesota. The thunderstorms transitioned into a well-organized quasi-linear line of thunderstorms during the evening.
• Hail in Colorado, May 16, 20170.88 in hail · 3 eventsStrong thunderstorm produced hail up to nickel size across parts of Boulder, Washington and Weld Counties.
• Tornadoes and Hail in Wisconsin, May 16, 20171 death · 25 injured · $12 million · EF3 · 6 eventsSevere thunderstorms developed along a warm-front in Southern Minnesota during the afternoon. During the late-afternoon and evening, storms continued to progress eastward and develop over Northwestern Wisconsin.
• Hail and Damaging Wind in Colorado, May 16, 201761 kt wind · 2 eventsStrong to severe thunderstorms moved across East Central Colorado two different times on this day, on in the afternoon and one in the evening. In the afternoon penny size hail was reported in Seibert.
• Hail and Damaging Winds in Kansas, May 16, 2017$2,000 · 1.75 in hail · 11 eventsBeginning in the afternoon scattered severe thunderstorms moved northeast across Northwest Kansas through the evening. Large hail up to golf ball size was reported at Dresden and Herndon.
• Hail and Damaging Winds in Nebraska, May 16, 20171.75 in hail · 32 eventsA southeast moving cold front triggered an area of severe thunderstorms across Eastern Nebraska and Western Iowa during the late afternoon and evening of May 16th. Large hail and damaging thunderstorm winds were the primary hazards.
• Tornado and Hail in Wisconsin, May 16 to 17, 2017EF0 · 15 eventsThunderstorms developed across northwest Wisconsin during the late afternoon and evening of Tuesday May 16th. The storms dropped hail up to the size of golf balls.
• Hail and Damaging Winds in Texas, May 16, 2017$32,000 · 1.8 in hail · 7 eventsRich moisture ahead of a sharp dryline and vigorous upper trough helped fuel isolated supercell thunderstorms this afternoon, particularly in the southeast Texas Panhandle and the southern Rolling Plains.
• Tornadoes and Flash Flooding in Oklahoma, May 16 to 17, 20171 death · 10 injured · $25 million · EF2 · 31 eventsStorms formed along the dryline in the Texas panhandle on the afternoon of the 16th before moving eastward. As a cold front caught up to the storms, convection increased and storms began to form into a line. This line continued eastward across the state overnight into the 17th.
• Tornado and Hail in Nebraska, May 16, 2017EF0 · 5 eventsAn isolated thunderstorm in Perkins County produced a brief tornado 5 miles west southwest of Brandon and hail up to ping pong ball size 3 miles east of Grant during the early evening hours on May 16th.
• Damaging Winds in Iowa, May 16, 201765 kt wind · 5 eventsA southeast moving cold front triggered an area of severe thunderstorms across Eastern Nebraska and Western Iowa during the late afternoon and evening of May 16th. Large hail and damaging thunderstorm winds were the primary hazards.
• Tornadoes and Hail in Kansas, May 16 to 17, 20172 injured · $658,000 · EF3 · 5 eventsA cyclic supercell thunderstorm produced a long track tornado across portions of Barton county, Kansas.
• Flash Flooding and Flooding in Wisconsin, May 16 to 17, 2017$149,000 · 1 in hail · 19 eventsFor the second day in a row, severe thunderstorms moved across portions of western Wisconsin on May 16th. These storms primarily produced large hail from Taylor County south to Buffalo, Trempealeau and Jackson Counties.
• Tornadoes and Hail in Iowa, May 16 to 17, 2017$37,000 · EF0 · 8 eventsSevere Thunderstorms moved through the Tri-State area and resulted in strong winds and even a brief tornado. Much of the resultant damage was to trees.
• Damaging Wind in Kansas, May 16, 201761 kt wind · 1 eventA complex of strong to severe thunderstorms pushed across the area from west to east during the evening of May 16th. A few reports of damaging winds were reported in north central Kansas.
• Hail and Damaging Wind in Minnesota, May 16, 201750 kt wind · 4 eventsFor the second day in a row, hail producing thunderstorms moved across portions of southeast Minnesota on May 16th. The hail was reported in Olmsted and Wabasha Counties with the largest reported hail being nickel sized northeast of Plainview (Wabasha County).
• Hail and Damaging Wind in Texas, May 16, 201765 kt wind · 3 eventsA dryline interacting with an unstable atmosphere resulted in the development of a few severe thunderstorms.
• Tornado and Hail in Wisconsin, May 16, 2017EF0 · 9 eventsThunderstorms developed near a warm front that was draped across central and northeast Wisconsin. Some of the storms produced large hail, damaging winds and heavy rain in parts of central and north central Wisconsin.
• Hail in Texas, May 16, 20171.75 in hail · 8 eventsAn upper level low pressure system was over the southern Rocky Mountains and a dryline was across the Permian Basin. There was also an eastward advancing Pacific cold front which collided with the dryline.
• Hail and Damaging Winds in Iowa, May 16 to 17, 2017$77,000 · 55 kt wind · 6 eventsFor the second day in a row, severe thunderstorms moved across portions of northeast Iowa during the evening of May 16th. These storms mainly produced some sporadic wind damage across portions of Floyd, Mitchell and Chickasaw Counties.
• Damaging Winds in Oklahoma, May 17, 201765 kt wind · 3 eventsSevere thunderstorms developed along a dry line across the eastern Texas Panhandle during the afternoon of the 16th. These storms moved across western and central Oklahoma during the afternoon and evening hours.
• Hail and Heavy Rain in Michigan, May 17 to 18, 20170.88 in hail · 8 eventsA upper level disturbance moving across a slow-moving frontal boundary interacted with a warm and moist air mass to produce strong thunderstorms and heavy rainfall from the evening of the 17th into the morning of the 18th.
• Tornadoes and Hail in Iowa, May 17 to 19, 2017$152,000 · EF1 · 73 eventsA fast moving complex of severe thunderstorms developed and tracked over much of eastern Iowa, northwest Illinois, and northeast Missouri, as an area of low pressure lifted northeast into northwest Iowa.
• Hail and Damaging Winds in Iowa, May 17, 20171 death · 1 injured · $901,000 · 1 in hail · 102 eventsAfter a cold front stalled out across northwest Iowa the previous night, much of Iowa was firmly within the warm sector of an approaching surface low. As a result, winds were strong out of the south, helping keep dew points in the mid to upper 60s.
• Tornado and Hail in Nebraska, May 17, 2017EF1 · 5 eventsDaytime instability caused by warm surface temperatures and and cold temperatures near an upper level low pressure system helped create small thunderstorms during the afternoon. Some of these thunderstorms produced marginally large hail and a brief tornado over eastern Nebraska.
• Hail and Damaging Winds in Wisconsin, May 17, 2017$130,000 · 1 in hail · 35 eventsLow pressure tracking northeast from the Missouri Valley brought several rounds of thunderstorms and heavy rain to northeast Wisconsin during the afternoon and evening hours of May 17th.
• Damaging Wind in South Dakota, May 17, 201752 kt wind · 1 eventSevere Thunderstorms moved through the Tri-State area and resulted in strong winds. Much of the resultant damage was to trees.
• Hail and Damaging Winds in Wisconsin, May 17, 2017$327,000 · 1 in hail · 29 eventsA low pressure area and warm front resulted in rounds of strong to severe thunderstorms. Damaging winds caused tree damage and some structural damage. Large hail was also observed.
• Hail and Damaging Winds in Minnesota, May 17, 20171.75 in hail · 7 eventsAn area of low pressure moved from Nebraska, northeast across southern Minnesota, and into west central Wisconsin during the afternoon of Wednesday, May 17th.
• Tornado and Flooding in Wisconsin, May 17 to 25, 2017$697,000 · EF1 · 52 eventsTwo lines of severe thunderstorms moved across western Wisconsin during the afternoon and evening of May 17th. This was the third day in a row that severe weather impacted the area. The storms primarily produced damaging winds, but also dropped one tornado.
• Tornado and Hail in Iowa, May 17, 2017$152,000 · EF0 · 24 eventsTwo lines of severe thunderstorms moved across northeast Iowa during the afternoon and evening of May 17th. This was the third day in a row that severe weather impacted the area. The storms primarily produced wind damage along with a weak tornado and some hail.
• Lightning Strike in Florida, May 17, 20171 death · 1 eventA weak developing thunderstorm over the nearshore waters off Martin County moved westward over Jensen Beach during the late afternoon. A construction worker was stuck by lightning, transported to the hospital and later died from the injuries.
• Tornadoes and Hail in Minnesota, May 17, 2017$22,000 · EF0 · 14 eventsTwo lines of severe thunderstorms moved across southeast Minnesota during the afternoon and evening of May 17th. This was the third day in a row that severe weather impacted the area. The storms produced two weak tornadoes.
• Tornadoes and Hail in Illinois, May 17, 20171 injured · $92,000 · EF2 · 18 eventsA fast moving complex of severe thunderstorms developed and tracked over much of eastern Iowa, northwest Illinois, and northeast Missouri, as an area of low pressure lifted northeast into northwest Iowa.
• Tornadoes and Hail in Illinois, May 17 to 18, 2017$141,000 · EF1 · 27 eventsA line of severe thunderstorms moved across northern Illinois late in the evening of May 17th and overnight into the early morning of May 18th.
• Damaging Winds in Missouri, May 17, 201760 kt wind · 2 eventsA fast moving complex of severe thunderstorms developed and tracked over much of eastern Iowa, northwest Illinois, and northeast Missouri, as an area of low pressure lifted northeast into northwest Iowa. Damaging winds were reported with this system.
• Damaging Wind in Wisconsin, May 17, 2017$100,000 · 61 kt wind · 1 eventA line of thunderstorms that moved from southeast Minnesota, into west central Wisconsin, produced a swath of damage in southern Eau Claire County west of Augusta, near Young Road and County Road VV. An outbuilding was destroyed and several trees blown down.
• Hail and Damaging Winds in Illinois, May 17, 2017$147,000 · 1.5 in hail · 13 eventsA deep area of low pressure tracking from eastern Nebraska into southern Minnesota triggered scattered strong to severe thunderstorms across the Illinois River Valley during the late evening of May 17th.
• Damaging Wind in Michigan, May 18, 2017$40,000 · 56 kt wind · 1 eventA line of thunderstorms crossed northern lower Michigan. One storm within the line became severe, bringing wind damage to the Higgins Lake area.
• Flash Flood in Missouri, May 18, 2017$35,000 · 1 eventA thunderstorm with very heavy rain remained stationary over the Poplar Bluff area for a couple hours. The storm occurred in a southwest flow of moist and unstable air ahead of a cold front over western and northern Missouri.
• Flash Flooding and Heavy Rain in Tennessee, May 18 to 19, 2017$15,000 · 4 eventsScattered showers and thunderstorms affected parts of northern Middle Tennessee during the morning hours on May 19. Thunderstorms continued to redevelop across Sumner County for several hours, resulting in over 6 inches of rain in some areas and significant flash flooding.
• Tornadoes and Flash Flood in Oklahoma, May 18 to 19, 2017$82,000 · EF1 · 86 eventsA line of storms fired along and just ahead of a dryline and cold front on the afternoon of the 18th and continued eastward across the state overnight into the 19th.
• Hail in Texas, May 18, 20171.75 in hail · 1 eventA very strong upper level low pressure system over the central Rockies pushed dry air over the South Plains and much of the Rolling Plains. Substantial moisture existed east of a dryline located around the US Highway 83 corridor.
• Hail and Damaging Winds in New York, May 18, 2017$138,000 · 2.5 in hail · 31 eventsSeveral rounds of thunderstorms moved across the region during from the afternoon through the early overnight hours. Numerous storms tracked from the western Southern Tier across the northern Finger Lakes and into the eastern Lake Ontario region.
• Tornado and Hail in Colorado, May 18, 20171.75 in hail · 11 eventsIsolated severe storms developed with one storm producing a tornado southwest of Timpas in Otero county. In addition, hail up to the size of golf balls was also observed.
• Tornadoes and Flash Flood in Texas, May 18, 2017$100,000 · EF2 · 13 eventsA line of storms fired along and just ahead of a dryline and cold front on the afternoon of the 18th and continued eastward across the state overnight into the 19th.
• Hail in Texas, May 18, 20171.5 in hail · 5 eventsA residual dryline boundary was draped across portions of the eastern Panhandles. To the east of that dryline across the far eastern TX Panhandle, SBCAPE of 2000-3000 J/kg along with effective shear of 40-50 kts produced an environment for supercell development with large hail.
• Hail and Damaging Winds in Ohio, May 18, 20171 injured · $15,000 · 1 in hail · 4 eventsSouthward sagging pre-frontal trough was enough to spark some strong to severe storms on the afternoon of the 18th with sufficient instability and shear in place.
• Damaging Wind in West Virginia, May 18, 2017$5,000 · 50 kt wind · 1 eventSouthward sagging pre-frontal trough was enough to spark some strong to severe storms on the afternoon of the 18th with sufficient instability and shear in place.
• Damaging Winds in Ohio, May 18, 201774 kt wind · 6 eventsCold front/pre-frontal trough entered the area during the late afternoon and evening hours. Thunderstorms moved into northwestern Ohio out of Indiana. Paulding county was hardest hit with 3 different rounds of storms causing extensive damage to power poles.
• Hail and Damaging Winds in Pennsylvania, May 18, 2017$4,000 · 1 in hail · 3 eventsSouthward sagging pre-frontal trough was enough to spark some strong to severe storms on the afternoon of the 18th with sufficient instability and shear in place.
• Damaging Winds in Indiana, May 18, 201760 kt wind · 5 eventsCold front/pre-frontal trough entered the area during the late afternoon and evening hours. Thunderstorms developed with isolated reports of wind damage with the strongest storms.
• Damaging Wind in Georgia, May 18, 2017$1,000 · 1 eventAfternoon heating combined with a moderately moist and unstable air mass resulted in an isolated report of wind damage in northeast Georgia.
• Damaging Winds in Kentucky, May 18, 201751 kt wind · 3 eventsNumerous thunderstorms developed this afternoon, with two storms merging and strengthening in Lee County while continuing northeast through Wolfe and into Morgan Counties.
• Hail and Damaging Winds in New York, May 18, 2017$55,000 · 1.75 in hail · 15 eventsShowers and thunderstorms developed in a very unstable environment Thursday afternoon along a pre-frontal trough. The trough was aligned north-south across the state of New York and Pennsylvania ahead of an advancing cold front.
• Tornadoes and Flash Flooding in Kansas, May 18, 2017$200 · EF0 · 40 eventsAn upper low continued to move out over the central High Plains, while a surface low deepened over the Texas Panhandle. A warm front drifted northward over central and southwest Kansas in response to strong meridional flow over the region to the east of the upper low.
• Hail and Damaging Winds in Virginia, May 18, 2017$2,000 · 1 in hail · 4 eventsA high pressure entered east of the Carolina coastline on May 18th, ushered in warm and humid air,aiding in isolated thunderstorm development along the southern slopes of the Blue Ridge Mountains. These storms produced wind damage and hail.
• Hail and Damaging Winds in Vermont, May 18, 20171 injured · $395,000 · 1.5 in hail · 19 eventsRecord setting heat set the stage for an moderately unstable air mass, while a mid-level atmospheric disturbance provided the forcing and strong winds to develop scattered thunderstorms by late afternoon into early evening, some of which produced damaging winds and hail.
• Tornadoes and Flash Flood in Texas, May 18 to 19, 2017EF1 · 53 eventsOn May 18, a dryline clashed with a very unstable atmosphere to produce a long lived supercell, spawning several tornadoes, large hail and damaging thunderstorm wind reports.
• Tornadoes and Flooding in Kansas, May 18 to 20, 2017EF0 · 33 eventsAn embedded supercell within a line of severe thunderstorms produced two more tornadoes. Two touching down in Barton County, Kansas and one other in Saline county, Kansas. No damage was noted as they were weak tornadoes and occurred over open country.
• Flash Flood and Heavy Rain in Virginia, May 18, 2017$5,000 · 2 eventsThe evening of May 18th saw one of the more impressive flash flood events of the month as several strong to severe thunderstorms tracked across eastern Carroll County, VA.
• Hail and Damaging Winds in New York, May 18, 2017$30,000 · 1.5 in hail · 39 eventsMay 18 was the second straight day of widespread 90 degree weather across eastern New York. The hot airmass, despite not being overly humid, provided an unstable environment conducive for thunderstorm development.
• Tornado and Hail in Kansas, May 18, 2017EF0 · 48 eventsSevere t-storms developed near a warm front during the late afternoon of May 18th. The storms were very slow moving and had reports of funnels and lowerings from time to time as they moved across Morris, Dickinson and into Wabaunsee counties.
• Hail in Indiana, May 18, 20171 in hail · 2 eventsScattered thunderstorms moved east across southern portions of Indiana during the late afternoon hours of May the 18th. One of the storms intensified over Knox County dropping a combination of small and severe-sized hail.
• Hail in Maryland, May 18, 20171 in hail · 1 eventHigh pressure off the Atlantic coast allowed for a southerly flow to usher in warm and humid conditions. The warm and humid conditions led to an unstable atmosphere. A pressure trough acted as a lifting mechanism for showers and thunderstorms to develop.
• Hail in West Virginia, May 18, 20171 in hail · 1 eventHigh pressure off the Atlantic coast allowed for a southerly flow to usher in warm and humid conditions. The warm and humid conditions led to an unstable atmosphere. A pressure trough acted as a lifting mechanism for showers and thunderstorms to develop.
• Hail and Damaging Winds in Virginia, May 18, 20171 in hail · 15 eventsHigh pressure off the Atlantic coast allowed for a southerly flow to usher in warm and humid conditions. The warm and humid conditions led to an unstable atmosphere. A pressure trough acted as a lifting mechanism for showers and thunderstorms to develop.
• Hail in Illinois, May 18, 20171 in hail · 1 eventAn isolated severe storm popped up during the warmth of the afternoon. The storm occurred in the moist and unstable air mass to the south of a stationary front. The front extended from northwest Indiana across central Illinois to central Missouri.
• Hail and Damaging Wind in Pennsylvania, May 18, 2017$2,000 · 1 in hail · 2 eventsA cold front approaching from the Great Lakes triggered scattered thunderstorms in a near-record warm airmass across Pennsylvania during the late afternoon and early evening of May 18.
• Hail and Damaging Wind in New York, May 18, 2017$5,000 · 1 in hail · 2 eventsRecord setting heat set the stage for a moderately unstable air mass, while a mid-level atmospheric disturbance provided the forcing and strong winds to develop scattered thunderstorms by late afternoon into early evening, some of which produced damaging winds and hail.
• Hail in Kansas, May 18, 2017$25,000 · 1.5 in hail · 2 eventsSevere hail fell over southwestern Rooks County in the late afternoon on this Thursday. A broken line of severe multicell and supercell thunderstorms developed over central Kansas and was gradually lifting north between 3 and 4 PM CST.
• Hail and Damaging Winds in Ohio, May 18, 2017$50,000 · 1 in hail · 8 eventsA cold front moved across the region initiating a broken line of thunderstorms. Some of the stronger thunderstorms became severe and downed some trees.
• Damaging Winds in Vermont, May 18, 201750 kt wind · 4 eventsMay 18 was the second straight day of temperatures approaching or exceeding 90 degrees in Southern Vermont. The hot airmass, despite not being overly humid, provided an unstable environment conducive for thunderstorm development.
• Damaging Winds in New Hampshire, May 18, 201750 kt wind · 21 eventsA very hot and humid airmass for the time of year was in place over New Hampshire and western Maine during the evening of the 18th. Afternoon temperatures reached the lower to mid 90s in many inland locations.
• Hail and Damaging Wind in Pennsylvania, May 18, 2017$30,000 · 61 kt wind · 2 eventsA cold front moved across the region initiating a broken line of thunderstorms. Some of the stronger thunderstorms became severe and downed some trees.
• Damaging Winds in Massachusetts, May 18, 2017$43,000 · 50 kt wind · 16 eventsA line of thunderstorms formed ahead of a cold front and moved across Massachusetts during the first half of the night. There were numerous reports of trees knocked down by the thunderstorm winds.
• Tornadoes and Flash Flooding in Oklahoma, May 18 to 21, 2017$1.2 million · EF2 · 86 eventsA slow-moving, strong upper level storm system moved from the Central Rockies into the Central Plains on the 18th and 19th.
• Hail and Damaging Winds in Kansas, May 18, 20172.85 in hail · 18 eventsOn the afternoon of May 18, 2017 a large upper trough ejected into the plains and caused a widespread outbreak of severe weather across the states of Kansas and Missouri.
• Damaging Winds in Maine, May 18, 201752 kt wind · 4 eventsUnseasonably warm air overspread the region during the 18th. A cold front then approached northern areas during the evening...with thunderstorms developing in advance of the front. A few of the storms became severe across northeast Aroostook county producing damaging winds.
• Damaging Winds in Maine, May 18, 201750 kt wind · 2 eventsA very hot and humid airmass for the time of year was in place over New Hampshire and western Maine during the evening of the 18th. Afternoon temperatures reached the lower to mid 90s in many inland locations.
• Hail and Damaging Winds in Missouri, May 18 to 19, 20171.75 in hail · 21 eventsOn the afternoon of May 18, 2017 a large upper trough ejected into the plains and caused a widespread outbreak of severe weather across the states of Kansas and Missouri.
• Flash Flooding and Hail in Illinois, May 18 to 19, 20171 in hail · 7 eventsLow pressure tracking along a stationary frontal boundary brought several rounds of showers and thunderstorms to central Illinois from the evening of May 18th into the morning of May 19th.
• Damaging Wind in Connecticut, May 18, 201750 kt wind · 1 eventMay 18 was the second straight day of temperatures approaching or exceeding 90 degrees in Northwest Connecticut. The hot airmass, despite not being overly humid, provided an unstable environment conducive for thunderstorm development.
• Tornado and Flash Flood in Arkansas, May 18 to 21, 2017$52,000 · EF0 · 15 eventsA slow-moving, strong upper level storm system moved from the Central Rockies into the Central Plains on the 18th and 19th.
• Tornadoes and Flash Flooding in Missouri, May 18 to 20, 20171 injured · $749,000 · EF1 · 66 eventsMultiple rounds of severe thunderstorms over a two day period produced numerous weak tornadoes and wind damage reports across the Missouri Ozarks. Training of storms led to localized heavy rainfall and minor flooding reports.
• Flash Flooding and Hail in Arkansas, May 18 to 21, 2017$21,000 · 1.75 in hail · 20 eventsA line of severe thunderstorms moved through in the early mornings of both May 19th and 20th which caused a few reports of wind damage.
• Flash Flooding and Flooding in Texas, May 19, 2017$3,000 · 1.75 in hail · 13 eventsAn upper level trough was over the Rocky Mountains and a dryline was present across West Texas. An upper level disturbance associated with the upper trough moved over the area. Good instability and wind shear were also present.
• Tornadoes and Hail in Missouri, May 19, 2017EF1 · 17 eventsA complex of severe storms moved eastward along the I-70 corridor during the early morning hours of May 19th. There were two tornadoes as well as numerous damaging wind reports with this event.
• Damaging Winds in Illinois, May 19, 201761 kt wind · 3 eventsA complex of severe storms moved eastward along the I-70 corridor during the early morning hours of May 19th. There were two tornadoes as well as numerous damaging wind reports with this event.
• Flash Flooding and Hail in Kentucky, May 19, 2017$64,000 · 1.75 in hail · 13 eventsNumerous thunderstorms developed this morning and early afternoon. Training and repeated rounds of rainfall over the same areas led to many reports of flash flooding across portions of Perry, Pike, and Floyd Counties.
• Flash Flooding and Hail in Kentucky, May 19 to 21, 2017$60,000 · 1 in hail · 11 eventsAn extremely warm, moist, and unstable air mass resided over the lower Ohio Valley during the middle of May. As a series of strong weather systems passed through the region, rounds of strong to severe thunderstorms developed and tracked across central Kentucky.
• Hail and Damaging Winds in Virginia, May 19, 2017$36,000 · 1.75 in hail · 18 eventsAbove normal temperatures and abundant moisture helped trigger afternoon thunderstorms across portions of southwestern Virginia ahead of a cold front.
• Tornadoes and Flash Flooding in Oklahoma, May 19 to 20, 20171 death · $32,000 · 1.75 in hail · 51 eventsA line of storms fired along and just ahead of a cold front on the afternoon of the 19th and continued eastward across the state overnight into the 20th.
• Tornadoes and Hail in Kansas, May 19, 2017EF1 · 14 eventsMore tornadic storms moved across central Kansas dropping several weak tornadoes and one EF1 that caused damage to a shed and trees.
• Hail and Damaging Winds in North Carolina, May 19, 20171 in hail · 9 eventsScattered thunderstorms developed across the mountains and foothills of western North Carolina throughout the afternoon. A few of the storms produced severe weather, mainly in the form of large hail, although a couple of areas of minor wind damage were reported.
• Damaging Winds in Ohio, May 19, 2017$39,000 · 50 kt wind · 14 eventsA warm and unstable air mass was in place across the region ahead of an advancing cold front. This led to scattered thunderstorm development through the afternoon that continued into the early evening hours.
• Hail and Damaging Winds in North Carolina, May 19, 2017$8,000 · 1.75 in hail · 6 eventsAbove normal temperatures and abundant moisture triggered afternoon thunderstorms across portions of North Carolina ahead of a cold front.
• Hail and Damaging Wind in Indiana, May 19, 20172 injured · $25,000 · 2 in hail · 10 eventsTwo waves of showers and thunderstorms moved through central Indiana from the west during the late morning and early afternoon of May the 19th. One small hail report came from the first wave of storms.
• Hail in Kansas, May 19, 20170.88 in hail · 1 eventLow-end severe hail occurred around midday on this Friday. Around 11 AM CST, an isolated thunderstorm formed south of Hill City. Over the following two hours, this storm moved northeast crossing the northwest corner of Rooks County and the eastern half of Phillips County.
• Damaging Winds in Virginia, May 19, 2017$14,000 · 50 kt wind · 8 eventsScattered severe thunderstorms in advance of a cold front produced damaging winds across portions of central and eastern Virginia.
• Tornadoes and Flash Flooding in Indiana, May 19 to 20, 2017$575,000 · EF1 · 16 eventsAn extremely warm, moist, and unstable air mass resided over the lower Ohio Valley during the middle of May. As a series of strong weather systems passed through the region, rounds of strong to severe thunderstorms developed and tracked across southern Indiana.
• Tornado and Hail in Texas, May 19, 2017$10,000 · 2.5 in hail · 13 eventsA line of storms fired along and just ahead of a cold front on the afternoon of the 19th and continued eastward across the state overnight into the 20th.
• Damaging Wind in Pennsylvania, May 19, 2017$4,000 · 52 kt wind · 1 eventA lone severe thunderstorm developed in a moderately high CAPE, but fairly low shear environment and produced wind damage in southern York County during the afternoon of May 19, 2017.
• Damaging Winds in Indiana, May 19, 2017$2,000 · 50 kt wind · 3 eventsA warm and unstable air mass was in place across the region ahead of an advancing cold front. This led to scattered thunderstorm development through the afternoon that continued into the early evening hours.
• Hail in Tennessee, May 19, 20171.25 in hail · 1 eventAn unstable atmosphere brought a couple of marginally severe storms to portions of the Midsouth during the mid and late afternoon hours of May 19th.
• Hail and Damaging Winds in Virginia, May 19, 20171 in hail · 11 eventsA warm and humid air mass led to the development of thunderstorms. A few thunderstorms became severe due to stronger winds aloft.
• Hail and Damaging Winds in North Carolina, May 19, 2017$8,000 · 1 in hail · 4 eventsAhead of a cold front approaching North Carolina, disturbances rotating around an upper level ridge off the Florida coast initiated deep convection in a moderately unstable airmass across southwestern Virginia and northwestern North Carolina.
• Hail and Damaging Wind in Kentucky, May 19, 2017$10,000 · 1 in hail · 2 eventsA warm and unstable air mass was in place across the region ahead of an advancing cold front. This led to scattered thunderstorm development through the afternoon that continued into the early evening hours.
• Tornadoes in Kansas, May 19, 2017EF0 · 5 eventsThunderstorms redeveloped after severe storms that occurred the previous day, before an upper low began to lift to the northeast.
• Damaging Winds in Pennsylvania, May 19, 2017$6,000 · 50 kt wind · 3 eventsShortwave crossing a stalled boundary across the region helped to initiate isolated strong to severe storms on the 19th. There were a few reports of trees down in eastern Ohio and southwestern Pennsylvania.
• Hail in Arkansas, May 19, 20171 in hail · 2 eventsAn unstable atmosphere brought a couple of marginally severe storms to portions of the Midsouth during the mid and late afternoon hours of May 19th.
• Damaging Winds in Ohio, May 19, 2017$1,000 · 50 kt wind · 2 eventsShowers and thunderstorms formed along a cold front which moved through southeastern Ohio during the evening of the 19th. Most storms stayed below severe levels, however one pulsed up and resulted in tree damage in Perry County.
• Hail and Damaging Winds in Maryland, May 19, 20171 in hail · 7 eventsA warm and humid air mass led to the development of thunderstorms. A few thunderstorms became severe due to stronger winds aloft.
• Tornado and Hail in Missouri, May 19, 2017EF1 · 4 eventsStalled warm front was focus of activity that fired up during the late afternoon and evening hours on May 19th.
• Damaging Wind in Ohio, May 19, 2017$500 · 50 kt wind · 1 eventShortwave crossing a stalled boundary across the region helped to initiate isolated strong to severe storms on the 19th. There were a few reports of trees down in eastern Ohio and southwestern Pennsylvania.
• Hail in Texas, May 19, 20171.75 in hail · 2 eventsEarly evening thunderstorms developed over the southern Rolling Plains south of a stalled cold front. Some of these storms became severe over Stonewall County producing golf ball size hail.

Every billion-dollar disasterEvery storm of 2017Tornadoes in 2017

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.