Midwest/Northeast Severe Storms and Flooding

Losses, 2024 dollars

$1.4 billion

Losses at the time

$948 million

Deaths

0

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

• Damaging Wind in Texas, July 18, 2010$25,000 · 50 kt wind · 1 eventA lone severe storm developed during the evening hours of July 18th and produced a downburst which damaged a residence after a large tree was blown down.
• Flash Flood in New Mexico, July 18, 2010$2,000 · 1 eventDeep moisture over eastern New Mexico fueled thunderstorm development on the 18th, with some of the storms producing heavy rain. This resulted in flash flooding east of Encino on Highway 285/60.
• Damaging Wind in Wyoming, July 18, 201060 kt wind · 1 eventA severe thunderstorm produced wind gusts near 70 mph across far northeastern Campbell County.
• Hail and Damaging Winds in Wyoming, July 18, 20101.25 in hail · 4 eventsA severe thunderstorm produced large hail and strong wind gusts across portions of the Wyoming Black Hills.
• Hail in Nebraska, July 18, 20101.75 in hail · 5 eventsThunderstorms developed along a semi stationary front. The storms intensified as an upper level disturbance moved east producing several large hail reports in Sheridan County.
• Damaging Wind and Lightning Strike in Kentucky, July 18, 2010$10,000 · 52 kt wind · 2 eventsAn ongoing MCS across western IL/eastern MO moved into the lower Ohio Valley during the afternoon hours. Most of the storms associated with this sytem remained sub-severe as they crossed the region. However isolated wind damage did occur in Hart county.
• Tornado and Flash Flooding in Missouri, July 18 to 21, 20101 death · 2 injured · $400,000 · EF0 · 25 eventsSeveral rounds of storms moved through the region during the period of July 18th through July 21st. There were numerous reports of flash flooding and wind damage as well as some isolated reports of large hail.
• Hail in South Dakota, July 18, 20101 in hail · 2 eventsA severe thunderstorm produced hail to quarter size in the Pine Ridge area.
• Damaging Wind in Kentucky, July 18, 2010$100,000 · 55 kt wind · 1 eventOn the night of July 18th, an isolated severe thunderstorm caused widespread tree and power line damage across a swath of Pulaski County. Most of the damage occurred within a 5 mile radius of Somerset.
• Damaging Wind in South Dakota, July 18, 201052 kt wind · 1 eventA severe thunderstorm produced 60 mph wind gusts around Buffalo.
• Damaging Winds in Maryland, July 18, 2010$9,000 · 63 kt wind · 10 eventsHigh pressure over the western Atlantic continued to usher in hot and humid air with a southwest flow. An upper-level disturbance in the zonal flow triggered showers and thunderstorms across portions of Maryland.
• Hail in Arizona, July 18, 20100.75 in hail · 1 eventA thunderstorm produced hail and very heavy rain in White River.
• Damaging Winds in Maryland, July 18, 201050 kt wind · 2 eventsStrong to severe thunderstorms formed to the lee of the Blue Ridge Mountains during the late evening of the 18th and passed across the central Eastern Shore around Midnight EDT before weakening.
• Damaging Wind in Tennessee, July 18, 2010$75,000 · 82 kt wind · 1 eventAn area of showers and thunderstorms developed across south central Kentucky and moved into the north central portions of Middle Tennessee during the late evening hours on Sunday, July 18th, resulting in thunderstorm wind damage in Macon County.
• Flash Flooding and Damaging Winds in Tennessee, July 19, 2010$187,000 · 74 kt wind · 5 eventsAn area of showers and thunderstorms developed across south central Kentucky and moved into the north central portions of Middle Tennessee during the early morning hours on Monday, July 19th.
• Damaging Winds in Tennessee, July 19, 201050 kt wind · 2 eventsA dying mesoscale convective complex moved into the Midsouth during the early morning hours of July 19th, 2010. The complex produced damaging winds and flash flooding.
• Hail in South Dakota, July 19, 20101 in hail · 1 eventA severe thunderstorm produced quarter sized hail west of Spearfish.
• Flash Flood in Arkansas, July 19, 20101 eventA dying mesoscale convective complex moved into the Midsouth during the early morning hours of July 19th, 2010. The complex produced damaging winds and flash flooding.
• Damaging Wind in South Dakota, July 19, 201052 kt wind · 1 eventA severe thunderstorm produced strong wind gusts northeast of Wood.
• Flash Flood and Hail in Iowa, July 19, 20100.88 in hail · 2 eventsHeavy rains resulted in flash flooding of parts of Van Buren County during the morning of July 19. Some non-severe hail was also observed.
• Hail and Damaging Winds in New York, July 19, 20101 injured · $123,000 · 70 kt wind · 20 eventsA potent cold front crossing the Tri-State spawned multiple severe thunderstorms across all of southeast New York.
• Damaging Winds and Lightning Strike in New Jersey, July 19, 2010$28,000 · 61 kt wind · 5 eventsA potent cold front crossing the Tri-State spawned multiple severe thunderstorms across northeast New Jersey.
• Hail in Iowa, July 19, 2010$5,000 · 0.95 in hail · 1 eventAn area of thunderstorms formed north of a stationary front which extended east to west just to the south of Iowa. CAPE was around 1000 J/kg just to the south of the storms, however strong theta-e advection was taking place.
• Damaging Winds and Lightning Strikes in New Jersey, July 19, 20101 death · 3 injured · $25,000 · 50 kt wind · 4 eventsA lee side trough coupled with an upper air disturbance triggered and maintained a line of strong to locally severe thunderstorms across central and southern New Jersey during the morning of the 19th.
• Damaging Winds and Lightning Strikes in Connecticut, July 19, 2010$113,000 · 61 kt wind · 5 eventsA potent cold front crossing the Tri-State spawned multiple severe thunderstorms across southern Connecticut.
• Flash Flooding in Puerto Rico, July 19 to 20, 2010$57,000 · 13 eventsAn active tropical wave moved across Puerto Rico and the U.S. Virgin Islands on Monday July 19, generating numerous showers and isolated thunderstorms, some with very heavy rain.
• Damaging Wind in Missouri, July 19, 201052 kt wind · 1 eventAn isolated severe thunderstorm caused damaging winds near Macon, during the mid |morning hours of July 19, 2010.
• Flash Flood in Illinois, July 19, 20101 eventHeavy rains resulted in flash flooding in Colchester, IL during the late morning of July 19.
• Hail and Damaging Winds in Illinois, July 19, 20101 injured · $1.9 million · 1.5 in hail · 21 eventsA potent upper-level disturbance interacting with a slow-moving cold front triggered clusters of severe thunderstorms across central Illinois during the afternoon of July 19th.
• Flash Flooding and Damaging Winds in Illinois, July 19 to 21, 201065 kt wind · 6 eventsSeveral rounds of storms moved through the region during the period of July 18th through July 21st. There were numerous reports of flash flooding and wind damage as well as some isolated reports of large hail.
• Flash Flood in Wisconsin, July 19, 2010$150,000 · 2 eventsThunderstorms that developed in a very moist environment produced heavy rain of 1 to 2 inches per hour leading flash flooding. The storms also produced a funnel cloud near Oshkosh.
• Flash Flood and Hail in Michigan, July 19, 20101 in hail · 4 eventsSevere thunderstorms generated large hail and heavy rain in Marquette on the afternoon of the 19th.
• Hail in Pennsylvania, July 19, 20100.88 in hail · 1 eventScattered showers and thunderstorms developed out ahead of a cold front. Due to cloud cover and limited instability, widespread severe weather did not develop, but isolated storms produced hail across the southern Wyoming Valley.
• Hail in New York, July 19, 20101 in hail · 1 eventA low pressure system moved eastward across the region on Monday July 19th, dragging its associated cold front across east central New York during the afternoon and early evening hours, triggering showers and thunderstorms.
• Damaging Winds and Heavy Rain in Indiana, July 19, 2010$45,000 · 65 kt wind · 11 eventsA bowing line of storms pushed out of East-Central Illinois into West-Central Indiana during the late afternoon and early evening hours of July 19th. This line of storms brought damaging winds, some in excess of 70 mph, to western portions of Central Indiana.
• Hail and Damaging Wind in Montana, July 19, 20101.75 in hail · 4 eventsA severe thunderstorm producing large damaging hail, as well as damaging winds moved across Carter County.
• Hail and Damaging Winds in South Dakota, July 19, 20101.75 in hail · 8 eventsA long-lived severe thunderstorm developed near Nemo and tracked east-southeastward across Rapid City, producing large hail and strong wind gusts.
• Damaging Winds in Illinois, July 19, 2010$19,000 · 52 kt wind · 4 eventsA bowing line of thunderstorms raced eastward across Illinois and Indiana at 45 mph. The trailing southern end of the bow crossed parts of southern Illinois, accompanied by locally damaging winds.
• Hail and Damaging Wind in Wyoming, July 19, 2010$260,000 · 4.25 in hail · 5 eventsA supercell thunderstorm produced hail to the size of softballs and strong wind gusts north of Rozet in east central Campbell County, where the wind-drive hail damaged homes and vehicles.
• Damaging Winds in Indiana, July 19, 2010$102,000 · 61 kt wind · 6 eventsA bowing line of thunderstorms raced eastward across Illinois and Indiana at 45 mph. The trailing southern end of the bow crossed southwest Indiana, accompanied by locally damaging winds.
• Hail and Damaging Winds in Vermont, July 19, 2010$16,000 · 1 in hail · 7 eventsA weak surface low traveled along a frontal boundary draped across northern New York and Vermont on July 19th.
• Hail and Damaging Winds in South Dakota, July 19, 20101 injured · $1.8 million · 2.5 in hail · 25 eventsSevere storms moved from Montana southeastward across western South Dakota into south central South Dakota, merging with another area of storms over west central South Dakota.
• Damaging Winds in Indiana, July 19, 201065 kt wind · 5 eventsA MCS that formed in Illinois dove southeast through the day. This complex entered southern Indiana as a broken line with numerous damaging wind reports upstream.
• Hail and Damaging Wind in Wyoming, July 19, 2010$1.5 million · 2 in hail · 6 eventsA severe thunderstorm dropped hail to golf ball size and produced strong wind gusts from Moorcroft to Osage, causing significant damage to buildings and automobiles.
• Flash Flooding and Hail in Iowa, July 19 to 20, 2010$755,000 · 0.88 in hail · 6 eventsHeavy rains resulted in flash flooding of Van Buren, Lee, and Des Moines Counties from the late afternoon of July 19 into the morning hours of July 20. Some non-severe hail was also observed.
• Hail in South Dakota, July 19, 2010$300,000 · 1.75 in hail · 3 eventsAnother severe thunderstorm developed just west of Rapid City and tracked across town and onto the plains of eastern Pennington County. The storm produced golf ball sized hail on the west side of Rapid City.
• Hail and Damaging Winds in South Dakota, July 19, 2010$70,000 · 1.75 in hail · 6 eventsA severe thunderstorm moved east-southeast from northeastern Wyoming across southern Butte and southwestern Meade Counties. Large hail and strong wind gusts caused extensive damage before merging with a cluster of thunderstorms over Meade County.
• Damaging Wind in Pennsylvania, July 19, 2010$20,000 · 70 kt wind · 1 eventIsolated strong to severe thunderstorms produced wind damage in central Lancaster County. The thunderstorm winds snapped off or uprooted multiple trees and damaged a horse shed and tobacco barn.
• Damaging Wind in New Mexico, July 19, 2010$75,000 · 74 kt wind · 1 eventA weak upper level trough moved through southern New Mexico in a moderately unstable environment to produce a severe thunderstorm over the Gila which produced a microburst with estimated winds of 80 to 90 MPH.
• Damaging Winds in Virginia, July 19, 2010$3,000 · 52 kt wind · 3 eventsA surface trough remained over Virginia while a series of upper-level disturbances passed through in a zonal flow aloft. Hot and humid conditions led to moderate amounts of instability. Some thunderstorms that developed were able to produce damaging winds due to the instability.
• Damaging Winds and Lightning Strike in Kentucky, July 19, 2010$37,000 · 56 kt wind · 6 eventsA bowing line of thunderstorms raced eastward across Illinois and Indiana at 45 mph. The trailing southern end of the bow crossed parts of northwest Kentucky, accompanied by locally damaging winds.
• Damaging Winds in Pennsylvania, July 19, 2010$100,000 · 56 kt wind · 4 eventsA lee side trough coupled with an approaching cold front helped trigger a line of strong to severe thunderstorms across extreme southeast Pennsylvania on the evening of the 19th.
• Hail in Montana, July 19, 20102 in hail · 13 eventsA veru unstable airmass over Northcentral Montana helped produce numerous thunderstorms during the late afternoon and early evening hours. Hail larger than ping pong balls was reported. A funnel cloud was also reported.
• Damaging Winds and Lightning Strike in Kentucky, July 19, 20103 injured · $2,000 · 52 kt wind · 19 eventsA MCS that formed in Illinois dove southeast through the day. This complex entered southern Indiana as a broken line with numerous damaging wind reports upstream.
• Damaging Winds in Maryland, July 19, 2010$15,000 · 52 kt wind · 2 eventsA lee side trough coupled with an approaching cold front helped trigger a line of strong to severe thunderstorms across the Eastern Shore during the early evening of the 19th.
• Flash Flood and Damaging Winds in Arizona, July 19 to 20, 2010$185,000 · 65 kt wind · 8 eventsHigh pressure aloft was centered over central Arizona on July 19th. Numerous thunderstorms rotated around this upper high, and affected much of southeast Arizona during the afternoon and evening hours.
• Hail and Damaging Winds in New Hampshire, July 19, 20101.25 in hail · 17 eventsA minor shortwave with a weak surface reflection moved across New York during the day, and into northern New England late in the afternoon.
• Hail in Wyoming, July 19, 20101 in hail · 1 eventA severe thunderstorm produced quarter sized hail around Newcastle before heading into western South Dakota. Snow plows had to clear drifts of hail on U.S. Highway 16 near the state line.
• Hail and Damaging Winds in New Hampshire, July 19, 20101 injured · $75,000 · 1 in hail · 4 eventsScattered severe thunderstorms produced wind damage in southwest New Hampshire.
• Flash Flooding and Lightning Strike in Iowa, July 19 to 20, 2010$1.6 million · 15 eventsThe nearly stationary frontal boundary that had plagued Iowa for the previous couple days remained in place, setting the stage for strong thunderstorm development to the north of the front.
• Damaging Winds in Kentucky, July 19, 2010$54,000 · 55 kt wind · 7 eventsScattered to numerous thunderstorms formed in a warm and muggy air mass on the night of July 19th across eastern Kentucky. Numerous trees were blown down by a few of the storms that reached severe limits in Bath, Bell, Wolfe, Montgomery, and Powell counties.
• Hail in South Dakota, July 19, 20101 in hail · 1 eventQuarter sized hail fell in the Pringle area.
• Hail in South Dakota, July 19, 20101 in hail · 1 eventQuarter sized hail fell near Ardmore.
• Flash Flood and Damaging Winds in Tennessee, July 19, 2010$1.2 million · 50 kt wind · 3 eventsIsolated to widely scattered convection developed during the evening in moderately unstable atmosphere across the Tennessee Valley of East Tennessee. Severe convection remained limited across the region.
• Flash Flood in Wisconsin, July 19, 20101 eventA pocket of slow-moving thunderstorms produced 3 inches of rain in less than 2 hours over hilly terrain in central Sauk County. Roads made impassable due to high water were closed by law enforcement officials .
• Damaging Winds in Maine, July 19, 201050 kt wind · 2 eventsA minor shortwave with a weak surface reflection moved across New York during the day, and into northern New England late in the afternoon.
• Hail and Damaging Winds in Nebraska, July 19 to 20, 2010$76,000 · 2 in hail · 20 eventsThunderstorms developed across the northwest and moved southeast during the evening. The storms intensified over the northern sandhills to produce large hail. The largest hail reported was 2 inches in Lincoln County.
• Damaging Wind in South Dakota, July 19, 201052 kt wind · 1 eventAn isolated thunderstorm brought strong winds to part of Jones county.
• Flash Flooding and Hail in Illinois, July 19 to 20, 20101 in hail · 4 eventsA severe thunderstorm produced large hail in Hancock County just before 8 pm CDT July 19. Heavy rains lead to some flash flooding in Hancock and McDonough Counties later that night and during the morning of July 20.
• Hail in South Dakota, July 19, 20101.5 in hail · 2 eventsA severe thunderstorm produced large hail in southwestern Fall River County.
• Hail in Nebraska, July 19, 2010$1,000 · 2.75 in hail · 9 eventsSeveral strong storms developed over east central Wyoming and moved into portions of the Nebraska Panhandle early Monday evening, but did not produce large hail.
• Tornadoes and Flash Flooding in Missouri, July 19 to 20, 2010$23,000 · EF0 · 31 eventsThunderstorms erupted the evening of July 19th, along a stationary front that was draped across southern Iowa. The storms quickly moved south into north central Missouri.
• Damaging Wind in New Mexico, July 19, 2010$10,000 · 56 kt wind · 1 eventA microburst resulted in winds upwards of 65 mph near Espanola.
• Flash Flooding and Hail in Illinois, July 19 to 20, 20102 injured · $100,000 · 0.75 in hail · 4 eventsA large complex of thunderstorms developed in the wake of previous convection during the evening of July 19th. Locally heavy rainfall of between 3 and 5 inches occurred along and southwest of a Canton...to Decatur...to Robinson line.
• Damaging Wind in Colorado, July 19, 201060 kt wind · 1 eventThunderstorms moved from northeast Colorado into extreme northern Kansas during the late evening hours, producing wind gusts as high as 81 mph and golf ball sized hail. some tree limb and power pole damage occurred.
• Hail and Damaging Winds in Kansas, July 19 to 20, 2010$87,000 · 1.75 in hail · 15 eventsThunderstorms moved from northeast Colorado into extreme northern Kansas during the late evening hours, producing wind gusts as high as 81 mph and golf ball sized hail. some tree limb and power pole damage occurred.
• Damaging Wind in Colorado, July 19, 201052 kt wind · 1 eventA severe thunderstorm produced a wind gust of 60 mph at the La Junta Municipal Airport.
• Flash Flood in Missouri, July 19 to 20, 2010$10,000 · 1 eventHeavy rains resulted in flash flooding of parts of southeast Scotland County during the late evening of July 19 and morning of July 20.
• Damaging Wind in Arizona, July 19, 201060 kt wind · 1 eventStrong monsoon thunderstorms affected portions of the Greater Phoenix area on July 19, causing some damage to a home.
• Hail and Damaging Winds in Nebraska, July 19 to 20, 20101 in hail · 6 eventsStarting around midnight, and lasting for around 4 hours on this early Tuesday morning, a few clusters of strong to severe thunderstorms affected South Central Nebraska.
• Hail and Damaging Winds in Nebraska, July 20, 201054 kt wind · 5 eventsAn east-west line of thunderstorms developed from central Nebraska east into western Iowa during the early morning hours of July 20th. The storms developed north of a nearly stationary front that was along the Kansas and Nebraska border.
• Damaging Wind in Michigan, July 20, 201054 kt wind · 1 eventAn isolated severe thunderstorm impacted Sumpter Township in Wayne County.
• Flash Flooding in U.S. Virgin Islands, July 20, 20102 eventsAn active tropical wave moved across Puerto Rico and the U.S. Virgin Islands on Monday July 19, generating numerous showers and isolated thunderstorms, some with very heavy rain.
• Damaging Wind in Georgia, July 20, 2010$15,000 · 50 kt wind · 1 eventA strong subtropical ridge was building westward from the western Atlantic into the southeast United States. Warm air aloft, associated with the upper high, was resulting in an increasingly unfavorable environment for thunderstorm development.
• Damaging Wind in Delaware, July 20, 201050 kt wind · 1 eventAn approaching cold front helped trigger an isolated severe thunderstorm in Kent County.
• Hail in Montana, July 20, 20101 in hail · 2 eventsA west to northwest jet stream over the area helped to generate a severe thunderstorm.
• Damaging Winds in Virginia, July 20, 2010$18,000 · 55 kt wind · 19 eventsWarm and moist air ahead of a cold front in the Ohio Valley combined with an upper level low pressure system to spark scattered severe thunderstorms across|southwest Virginia.
• Hail and Damaging Winds in Wisconsin, July 20, 2010$140,000 · 2.5 in hail · 14 eventsOne severe thunderstorm tracked across portions of west-central Wisconsin the afternoon of Tuesday July 20th.
• Damaging Winds in South Carolina, July 20, 2010$1,000 · 50 kt wind · 2 eventsA hot and moist atmosphere set up during the early afternoon hours across southern South Carolina and southeast Georgia, with CAPE values reaching between 2500-3000 j/kg over much of the forecast area.
• Flash Flooding and Damaging Winds in West Virginia, July 20 to 21, 2010$246,000 · 50 kt wind · 9 eventsWell south of a frontal boundary, a moist and unstable air mass resided over the Ohio Valley and Central Appalachians. The ground was already wetter than normal from previous rains.
• Lightning Strike in Colorado, July 20, 2010$10,000 · 1 eventLightning sparked a 40-acre grassfire. It took approximately two hours to contain the blaze.
• Damaging Wind and Lightning Strike in Tennessee, July 20, 2010$24,000 · 50 kt wind · 2 eventsConvection formed along old outflow boundaries across the Tennessee Valley during the afternoon producing isolated severe wind gusts.
• Hail and Damaging Wind in New Mexico, July 20, 20101 in hail · 2 eventsThunderstorms moving off the east slopes of the Sangre de Cristo mountains strengthened as they moved into the Raton area, producing large hail and high wind gusts.
• Flash Flooding and Damaging Wind in Utah, July 20 to 22, 2010$95,000 · 50 kt wind · 7 eventsMonsoon moisture moved into southern and central Utah in mid-July, allowing thunderstorms to become more widespread each afternoon.
• Hail in Michigan, July 20, 20101 in hail · 1 eventA severe thunderstorm moved across central and eastern Chippewa County, producing marginally large hail on the northwest corner of Neebish Island.
• Hail in North Dakota, July 20, 2010$100,000 · 1.75 in hail · 12 eventsThunderstorms developing ahead of an upper level short wave trough across eastern Montana, were expected to spread eastward into northwest and portions of central North Dakota during the afternoon and evening hours of Tuesday, July 20th.
• Hail and Damaging Winds in Michigan, July 20, 2010$126,000 · 65 kt wind · 5 eventsAn upper level disturbance triggered scattered severe thunderstorms over south central Upper Michigan on the afternoon and evening of the 20th.
• Hail and Damaging Winds in Wisconsin, July 20, 2010$353,000 · 1.25 in hail · 3 eventsThunderstorms developed along a trough of low pressure over northern Wisconsin and produced large hail and damaging winds as they dropped south toward central Wisconsin on July 20th.
• Damaging Winds in North Carolina, July 20, 2010$14,000 · 65 kt wind · 7 eventsWarm and moist air ahead of a cold front in the Ohio Valley combined with an upper level low pressure system to spark scattered severe thunderstorms across|northwest North Carolina.
• Hail and Damaging Winds in North Carolina, July 20, 201055 kt wind · 6 eventsScattered thunderstorms developed in a moist airmass over western North Carolina during the afternoon hours. A few of the thunderstorms produced small areas of wind damage and a little small hail.
• Damaging Winds and Lightning Strikes in North Carolina, July 20, 2010$36,000 · 57 kt wind · 14 eventsAn upper level disturbance combined with strong afternoon heating to produce scattered strong to severe storms. Additional storms then developed along the numerous outflow boundaries.
• Tornado and Damaging Winds in North Carolina, July 20, 2010$16,000 · EF0 · 9 eventsScattered severe thunderstorms associated with a weak trough produced damaging winds across portions of northeast North Carolina.
• Hail and Damaging Winds in Georgia, July 20, 2010$2,000 · 1 in hail · 4 eventsA hot and moist atmosphere set up during the early afternoon hours across southern South Carolina and southeast Georgia, with CAPE values reaching between 2500-3000 j/kg over much of the forecast area.
• Flash Flood in Arizona, July 20, 20101 death · $2.0 million · 1 eventThunderstorms produced heavy rain over the Schultz Fire burn area and produced flash flooding, ash, and debris flow. Numerous properties were impacted and roads were closed.
• Flash Flooding and Flood in Kansas, July 20 to 21, 20101.75 in hail · 15 eventsDuring the late afternoon hours on July 20, strong thunderstorms brought heavy rain, along with isolated cases of severe hail and strong wind gusts. The rain continued to fall overnight and caused wide spread flash flooding across north central and northeastern Kansas.
• Damaging Winds in West Virginia, July 20, 2010$3,000 · 55 kt wind · 2 eventsWarm and moist air ahead of a cold front in the Ohio Valley combined with an upper level low pressure system to spark isolated severe thunderstorms across Greenbrier county, West Virginia.
• Hail and Damaging Winds in Kansas, July 20 to 21, 2010$71,000 · 1.5 in hail · 26 eventsNumerous strong to severe thunderstorms affected portions of central and east-central Kansas from the late afternoon hours on the 20th through the early morning hours on the 21st. The thunderstorms developed along and north of a warm front extending west to east across Kansas.
• Hail and Damaging Winds in Wisconsin, July 20, 20101 injured · $16 million · 1.75 in hail · 36 eventsSevere thunderstorms developed across northeast Wisconsin as a weak surface boundary encountered an unstable air mass.
• Flash Flooding and Damaging Wind in Kansas, July 20 to 21, 2010$300 · 52 kt wind · 6 eventsA frontal boundary caused severe thunderstorms to move across extreme eastern Kansas, during the late afternoon and evening hours of July 20, 2010. There were reports of flash flooding and damaging winds.
• Hail and Damaging Wind in Kansas, July 20 to 23, 20101 in hail · 3 eventsA cold front helped to generate thunderstorms in the evening but isolated severe.
• Hail in Kansas, July 20, 20100.75 in hail · 1 eventAn isolated severe thunderstorm produced marginally severe hail in Ness county.
• Flash Flooding and Damaging Winds in Missouri, July 20 to 21, 2010$4,000 · 61 kt wind · 12 eventsA frontal boundary served to focus additional severe thunderstorm activity, during the late afternoon and evening hours of July 20, 2010.
• Hail and Damaging Winds in Colorado, July 20, 20101.75 in hail · 11 eventsSevere thunderstorms pummeled portions of eastern Colorado with hail up to the size of golf balls...wind gusts to near 85 mph.
• Damaging Wind in Alabama, July 20, 2010$2,000 · 50 kt wind · 1 eventA short-lived severe thunderstorm developed during the afternoon hours in association with an unstable air mass.
• Tornado in Indiana, July 20, 2010$25,000 · EF0 · 2 eventsWith a boundary laid west to east across Central Indiana and ample moisture in play, a number of mini-supercell developed in the afternoon hours of July the 20th. One of these mini-supercells went on to produce a short-lived tornado near Trafalgar in Johnson County.
• Damaging Winds in Virginia, July 20, 2010$4,000 · 50 kt wind · 2 eventsScattered severe thunderstorms associated with a weak trough produced damaging winds across portions of central Virginia.
• Hail in Arizona, July 20, 20101 in hail · 1 eventA thunderstorm produced one inch diameter hail in Pinetop-Lakeside.
• Hail in Wyoming, July 20, 20100.88 in hail · 1 eventNickel sized hail fell at Devils Tower Junction.
• Damaging Winds in Missouri, July 20, 2010$10,000 · 61 kt wind · 3 eventsBack building thunderstorms developed across the Missouri Ozarks in response to an upper level short wave and a very moist air mass in place across the region. The storms produced isolated high winds causing sporadic wind damage.
• Flash Flood in Colorado, July 20, 20101 eventA slow moving thunderstorm produced flash flooding on the east side of Colorado Springs.
• Hail in North Dakota, July 20, 20101.5 in hail · 4 eventsShowers and thunderstorms over north central North Dakota moved southeast across southwest Benson and northwest Eddy counties late in the evening of the 20th before weakening. Several hours later, another storm fired up over southeast Barnes and north central Ransom county.
• Flash Flooding and Flooding in Kentucky, July 20 to 21, 20101 death · $5.4 million · 5 eventsWell south of a frontal boundary, a moist and unstable air mass resided over the Ohio Valley. The ground was already wetter than normal from previous rains. A southwest and west wind along with daytime heating formed showers and thunderstorms during the afternoon of the 20th.
• Flash Flood in Ohio, July 20 to 21, 2010$4.0 million · 1 eventWell south of a frontal boundary, a moist and unstable air mass resided over the Ohio Valley. The ground was already wetter than normal from previous rains. A southwest and west wind along with daytime heating formed showers and thunderstorms during the afternoon of the 20th.
• Hail and Damaging Wind in Kansas, July 20, 201052 kt wind · 2 eventsThunderstorms moved across Greeley county producing a few severe weather reports.
• Flash Flood and Damaging Wind in Arizona, July 20, 201050 kt wind · 2 eventsHigh pressure aloft was centered near the Four Corners region on the evening of July 20th, with southeast steering flow over southeast Arizona.
• Hail and Damaging Wind in Wyoming, July 20, 20101.75 in hail · 6 eventsA severe thunderstorm developed over northwestern Campbell County and moved northern Campbell and Crook Counties. The storm produced hail to golf ball size.
• Flash Flooding and Flooding in Kentucky, July 20 to 21, 2010$480,000 · 10 eventsTraining thunderstorms moved across northern Kentucky and south central Ohio beginning during the late evening hours and continuing into the overnight hours.
• Flash Flood in Colorado, July 20, 20101 eventThunderstorms produced very heavy rainfall during the evening, resulting in rapid runoff across Highway 385 south of Burlington.
• Flash Flooding and Flooding in Kentucky, July 21, 201012 eventsA line of training thunderstorms caused flooding in Elliott, Fleming, and Rowan counties on July 21st, resulting in multiple road closures and evacuations. Heavy rainfall also occurred in in Pulaski and Harlan counties.
• Flash Flood in Ohio, July 21, 20101 death · 4 injured · $300,000 · 1 eventTraining thunderstorms moved across northern Kentucky and south central Ohio beginning during the late evening hours and continuing into the overnight hours.
• Flash Flooding and Heavy Rain in Kansas, July 21, 20108 eventsDuring the early to mid morning hours on this Wednesday, a persistent area of showers and thunderstorms dumped very heavy rainfall across parts of North Central Kansas, resulting in fairly widespread flooding.
• Hail and Damaging Winds in New York, July 21, 2010$260,000 · 1.75 in hail · 24 eventsThunderstorms developed ahead of an approaching cold front. The thunderstorms produced large hail and damaging winds. Hail up to an inch and three-quarters was reported in Ontario, Wayne and Jefferson counties.
• Hail and Damaging Winds in New York, July 21, 2010$61,000 · 2 in hail · 60 eventsAs an area of low pressure over Wisconsin moved northeast, a stationary boundary over Pennsylvania pushed northward as a warm front during the morning hours.
• Flash Flooding in Kentucky, July 21, 20102 eventsAn outflow boundary from early morning convection across north and east Kentucky set up across south central Kentucky during the late morning hours. Strong southwest flow at the surface fed plenty of moisture into the system.
• Hail and Damaging Winds in New York, July 21, 2010$680,000 · 1.75 in hail · 18 eventsOn July 21st, a developing surface low across the Great Lakes traveled along a stationary boundary draped across the North Country. Surface conditions became increasingly unstable during the afternoon with temperatures in the 80s and dewpoints in the 60s and lower 70s.
• Hail and Damaging Winds in Pennsylvania, July 21, 2010$4,000 · 50 kt wind · 4 eventsAs an area of low pressure over Wisconsin moved northeast, a stationary boundary over Pennsylvania pushed northward as a warm front during the morning hours.
• Hail and Damaging Winds in New York, July 21, 20101.25 in hail · 18 eventsA low pressure system moved eastward across east central New York on Wednesday, July 21st. The system's warm front lifted to the north during the morning, ushering in a moist and unstable airmass. A cold front moved across the area during the evening.
• Lightning Strike in Wyoming, July 21, 20101 death · 17 injured · 1 eventMidday thunderstorms peppered Grand Teton mountain with lightning causing 17 injuries.
• Hail and Damaging Winds in New York, July 21, 20101 injured · $101,000 · 2 in hail · 20 eventsA stationary front, coupled with an approaching upper level trough caused severe thunderstorms across the Lower Hudson Valley and Long Island.
• Tornado in Illinois, July 21, 2010EF0 · 1 eventWidespread showers and thunderstorms occurred along a nearly stationary frontal boundary extending from Iowa northeastward into the southern Great Lakes.
• Hail and Damaging Wind in Massachusetts, July 21, 2010$13,000 · 50 kt wind · 3 eventsA low pressure system moved eastward across the region on Wednesday, July 21st. The system's warm front lifted to the north during the morning ushering in a moist and unstable airmass. A cold front moved across the area during the evening.
• Flash Flood and Hail in Vermont, July 21, 2010$1.8 million · 2 in hail · 48 eventsOn July 21st, a developing surface low across the Great Lakes traveled along a stationary boundary draped across the North Country. Surface conditions became increasingly unstable during the afternoon with temperatures in the 80s and dewpoints in the 60s and lower 70s.
• Flash Flooding and Damaging Wind in Arizona, July 21, 20101 injured · $11,000 · 52 kt wind · 5 eventsA moist and unstable atmosphere resulted in scattered thunderstorms developing across southeast Arizona, beginning relatively early during the midday hours. With the large amounts of moisture available, the primary threats from thunderstorms were heavy rain and flash flooding.
• Damaging Wind and Lightning Strike in Missouri, July 21, 2010$5,000 · 52 kt wind · 2 eventsIsolated air mass thunderstorms during the early evening produced strong winds and near continuous lightning across portions of central Missouri.
• Tornadoes and Hail in Connecticut, July 21, 2010$24,000 · EF1 · 16 eventsA low pressure system moved eastward across the region on Wednesday, July 21st. The system's warm front lifted to the north during the morning ushering in a moist and unstable airmass. A cold front moved across the area during the evening.
• Damaging Winds in South Carolina, July 21, 201060 kt wind · 9 eventsA shortwave moved across the region during the afternoon hours. Afternoon temperatures ranged from 95 to 100 degrees with dewpoint temperatures in the 70s. This produce a moderately to strongly unstable airmass.
• Hail and Damaging Winds in Massachusetts, July 21, 2010$51,000 · 1.25 in hail · 9 eventsA warm front edging into the southern portions of Southern New England, followed by a cold front moving eastward across the area resulted in severe thunderstorms across much of the area.
• Damaging Winds in Pennsylvania, July 21, 2010$70,000 · 56 kt wind · 11 eventsA strong cold front triggered severe thunderstorms across north-central Pennsylvania from the mid-afternoon into the evening hours. The severe storms produced several reports of thunderstorm wind damage.
• Damaging Wind in South Dakota, July 21, 201061 kt wind · 1 eventStrong wind gusts caused damage on ranches in the Howes area.
• Hail and Damaging Wind in Colorado, July 21 to 22, 2010$100,000 · 52 kt wind · 4 eventsA severe thunderstorm caused minor tree damage and knocked down a power line in and around Berthoud. Lightning also sparked a fire to a home in Loveland causing extensive damage.
• Tornado and Flood in Connecticut, July 21, 2010$691,000 · EF1 · 12 eventsA warm front edging into the southern portions of Southern New England, followed by a cold front moving eastward across the area resulted in severe thunderstorms across much of the area.
• Damaging Winds in Ohio, July 21, 2010$69,000 · 50 kt wind · 9 eventsA cold front dropped south from the Great Lakes into northern Ohio.
• Hail and Damaging Winds in New Hampshire, July 21, 20101 injured · 1 in hail · 22 eventsLow pressure crossing southern Canada pushed a trailing cold front toward northern New England during the late afternoon and evening. Ahead of the front, thunderstorm activity quickly turned severe with numerous supercells producing damaging winds and large hail.
• Damaging Winds and Lightning Strikes in Georgia, July 21, 20101 injured · $5,000 · 50 kt wind · 4 eventsA hot, humid, unstable air mass remained across the southeastern United States. Despite strong high pressure aloft centered over the southeastern U.S., scattered, diurnal pulse thunderstorms developed once again across the entire area during afternoon heating and continued well…
• Hail and Damaging Winds in Connecticut, July 21, 20101 injured · $215,000 · 1.75 in hail · 17 eventsA stationary front, coupled with an approaching upper level trough caused severe thunderstorms, including isolated supercells, across Southern Connecticut. One supercell was responsible for a microburst in Middlesex County.
• Tornadoes and Hail in Maine, July 21, 20101 injured · $70,000 · EF1 · 32 eventsLow pressure crossing southern Canada pushed a trailing cold front toward northern New England during the late afternoon and evening.
• Damaging Winds in South Carolina, July 21, 2010$8,000 · 50 kt wind · 10 eventsNumerous thunderstorms developed along and ahead of a weak lee-side trough over the eastern midlands. The thunderstorms developed and organized into a line as they met up with the inland pushing sea breeze across South Carolina.
• Damaging Winds in Tennessee, July 21, 201050 kt wind · 2 eventsIsolated convection developed in the Tennessee Valley producing damaging outflow gusts.
• Damaging Wind in South Dakota, July 21, 201052 kt wind · 1 eventWind gusts around 60 mph accompanied a severe thunderstorm near Kirley.
• Flash Flood in Utah, July 21, 20101 eventAbundant moisture across the area and daytime heating resulted in the development of strong afternoon thunderstorms.
• Damaging Winds in South Carolina, July 21, 2010$10,000 · 52 kt wind · 8 eventsA line of storms developed in a convergence zone along the Piedmont trough west of the area. The line congealed into a small meso-scale convective system as it moved into the area during the evening.
• Damaging Winds in South Dakota, July 21, 201070 kt wind · 11 eventsA line of storms brought winds up to 80 mph to parts of central South Dakota.
• Damaging Winds in Virginia, July 21, 2010$2,000 · 50 kt wind · 3 eventsA weak cold front drifted south over the area triggering scattered showers and thunderstorms. A few of the storms brought damaging winds to the Southside of Virginia.
• Flash Flooding in Kentucky, July 21, 2010$6,000 · 2 eventsHeavy rainfall moved over portions of Kentucky during the late afternoon and into the early hours of July 21st.
• Damaging Winds in Ohio, July 21, 2010$85,000 · 50 kt wind · 2 eventsIsolated severe thunderstorms developed across western Pennsylvania and eastern Ohio ahead of a cold front.
• Damaging Wind in Wyoming, July 21, 201066 kt wind · 1 eventA severe thunderstorm produced wind gusts around 75 mph in the Echeta area.
• Hail and Damaging Winds in New Jersey, July 21, 201052 kt wind · 3 eventsAn approaching cold front helped trigger some widely scattered strong to locally severe thunderstorms across central New Jersey during the evening of the 21st.
• Hail and Damaging Wind in Pennsylvania, July 21, 20101 in hail · 2 eventsAn approaching cold front helped trigger some widely scattered strong to locally severe thunderstorms across eastern Pennsylvania during the evening of the 21st.
• Damaging Wind in North Carolina, July 21, 201050 kt wind · 1 eventA weak cold front drifted south over the area, which triggered scattered showers and thunderstorms. One of these storms caused wind damage in Stokes county.
• Flash Flooding and Damaging Winds in New Mexico, July 21, 2010$1,000 · 52 kt wind · 5 eventsA weak upper level disturbance moved through southern New Mexico in a modestly moist and unstable environment. A weak surface trough was also present which helped aid in thunderstorm development over the lower elevations.
• Hail and Damaging Winds in Wyoming, July 21, 2010$10,000 · 2 in hail · 4 eventsLarge hail and strong wind gusts accompanied a severe thunderstorm from south of Gillette to west of Upton.
• Damaging Winds and Lightning Strike in North Carolina, July 21, 2010$6.0 million · 50 kt wind · 4 eventsScattered thunderstorms developed during the afternoon and evening across eastern North Carolina as the sea breeze shifted inland and interacted with a very unstable air mass. A few storms become severe producing strong winds and frequent lightning strikes.
• Lightning Strike in South Carolina, July 21, 2010$100,000 · 1 eventLightning struck the fire department.
• Damaging Wind in Pennsylvania, July 21, 2010$10,000 · 50 kt wind · 1 eventIsolated severe thunderstorms developed across western Pennsylvania and eastern Ohio ahead of a cold front.
• Damaging Wind in Alabama, July 21, 2010$3,000 · 50 kt wind · 1 eventA short-lived severe thunderstorm developed during the afternoon hours in association with an unstable air mass.
• Flash Flooding and Damaging Winds in South Dakota, July 21 to 22, 2010$100,000 · 61 kt wind · 10 eventsThunderstorms produced damaging winds at a few places west of the James River, then produced heavy rain and flash flooding along a path near Interstate 90 from Mitchell to Sioux Falls. The storms moved across the area during the evening of July 21st.
• Damaging Wind in Wyoming, July 21, 201050 kt wind · 1 eventAn upper level trough to the west over western Wyoming and northern Colorado, in combination with an unstable environment over the area, lead to the formation of strong to severe thunderstorms.
• Hail and Damaging Winds in Montana, July 21, 20101 in hail · 9 eventsA few severe thunderstorms moved across the central and southern portions of the Billings Forecast Area during the evening hours of the 21st.
• Damaging Winds in Colorado, July 21, 201061 kt wind · 3 eventsSeveral strong wind gusts were reported as thunderstorms moved across the county during the early evening. Minor tree damage occurred with some of the wind gusts.
• Hail and Damaging Wind in Nebraska, July 21, 20101 in hail · 2 eventsThunderstorms developed along a semi stationary front that extended southeast through northeast Colorado. As an upper level disturbance lifted northeast during the evening a few isolated severe thunderstorms developed to produce large hail and strong winds in Chase County.
• Flash Flooding in Maine, July 21, 2010$175,000 · 3 eventsA cold front produced a band of thunderstorms which resulted in 3 to 5 inches of rain over a 3 hour period. Many roads were washed out and culverts destroyed due to the heavy rainfall. Several roads in South Thomaston, St. George and Tenants Harbor were closed during the event.
• Damaging Winds in New Hampshire, July 21, 2010$17,000 · 50 kt wind · 3 eventsA warm front edging into the southern portions of Southern New England, followed by a cold front moving eastward across the area resulted in severe thunderstorms across much of the area.
• Damaging Wind in North Carolina, July 21, 201050 kt wind · 1 eventAn isolated cluster of thunderstorms developed to the northeast of Charlotte. The storms produced a little wind damage as they moved into Union County.
• Hail and Damaging Wind in Wyoming, July 21, 2010$75,000 · 1 in hail · 2 eventsA severe thunderstorm with large hail and strong winds caused damage in Newcastle.
• Hail and Damaging Wind in Nebraska, July 21, 2010$1,000 · 1.25 in hail · 3 eventsAn upper level trough to the west over Wyoming and northern Colorado, in combination with an unstable environment over the area, lead to the formation of severe thunderstorms. The thunderstorms initially formed in Wyoming and progressed eastward into the Panhandle.
• Hail in Vermont, July 21, 20101 in hail · 1 eventA low pressure system moved eastward across the region on Wednesday, July 21st. The system's warm front lifted to the north during the morning, ushering in a moist and unstable airmass. A cold front moved across the area during the evening.
• Damaging Winds in Georgia, July 21, 2010$4,000 · 50 kt wind · 3 eventsNumerous thunderstorms developed along and ahead of a weak lee-side trough over the eastern midlands. The thunderstorms developed and organized into a line as they met up with the inland pushing sea breeze across South Carolina.
• Tornado and Flash Flooding in Iowa, July 21 to 22, 2010$2.0 million · EF1 · 11 eventsA strong warm advection pattern set up over Iowa during the evening of the 21st into the morning hours of the 22nd. Strong moisture transport pooled moisture over the state with precipitable water values increasing to 2 to 2.3 inches over the north half of the state.
• Flash Flooding and Hail in Iowa, July 21 to 22, 20104 injured · $685,000 · 1 in hail · 14 eventsThunderstorms caused damaging winds, heavy rain with flash flooding, and one report of marginally large hail in northwest Iowa from just before midnight on July 21st to a few hours after midnight on July 22nd.
• Damaging Wind in Wyoming, July 21, 201050 kt wind · 1 eventA few severe thunderstorms moved across the central and southern portions of the Billings Forecast Area during the evening hours of the 21st.
• Flash Flooding in Nebraska, July 22, 2010$200,000 · 2 eventsA low pressure system lifted northeast across central Nebraska on the 21st. Thunderstorms developed as the system lifted northeast and moved slowly east.
• Flash Flooding and Flooding in Nebraska, July 22 to 23, 2010$95,000 · 7 eventsA line of thunderstorms developed in extreme northeast Nebraska in response to an increasing low level jet feeding in very moist and unstable conditions into a weak nearly stationary front in the region.
• Flash Flood in Iowa, July 22, 2010$100,000 · 1 eventHeavy rain mainly along and north of the Highway 20 corridor caused localized flash flooding.
• Tornado in Indiana, July 22, 2010$3,000 · EF0 · 1 eventScattered thunderstorms developed across portions of Central Indiana on July 22nd. With deep layer shear under 30 knots, mulitcell storms were the main convective mode across the area. One of these cells pushed into Johnson County and interacted with an outflow boundary.
• Flash Flood in Arizona, July 22, 2010$1.2 million · 1 eventHeavy rain from a thunderstorm produced flash flooding in and below the Schultz Fire burn area for the third time in a week. The flooding was not as bad as the July 20th event but, worse than the July 16 event.
• Tornado and Flash Flood in Michigan, July 22, 2010$100,000 · EF0 · 11 eventsOne round of strong to severe storms impacted far southern lower Michigan during the mid to late afternoon hours of July 22nd, resulting in several reports of downed trees and power lines.
• Damaging Winds in Georgia, July 22, 201050 kt wind · 2 eventsAn upper level ridge was northwest of the area while Tropical Depression #3 was nearing south Florida. Between the two features a swath of dry air was positioned over north Florida and southeast Georgia.
• Tornadoes and Damaging Winds in Wisconsin, July 22, 20102 injured · $138,000 · EF2 · 23 eventsA stalled frontal boundary combined with a moist and unstable atmosphere and strong wind shear to produce numerous tornadoes and funnel clouds over South Central and Southeast Wisconsin.
• Damaging Wind in New Mexico, July 22, 201053 kt wind · 1 eventThunderstorms over eastern New Mexico produced heavy rain and a few wind gusts, mainly around Cannon Air Force Base.
• Tornado and Damaging Wind in Michigan, July 22, 2010EF0 · 2 eventsA warm front was advancing north into southern Lower Michigan. Strong shear was in place along and south of the front. A supercell developed and tracked along the front, intensifying as it tracked towards Branch County.
• Flash Flooding in Wisconsin, July 22, 20101 death · $28 million · 11 eventsParts of south-central and southeast Wisconsin experienced several rounds of record-setting torrential heavy rains during the afternoon and evening hours of July 22, 2010 that led to flash flooding and damage.
• Damaging Winds and Lightning Strike in Georgia, July 22, 2010$4,000 · 50 kt wind · 3 eventsThe combination of the inland pushing sea breeze and outflow boundaries from convection earlier in the day, resulted in a cluster of strong to severe thunderstorms across southeast Georgia.
• Damaging Winds in Ohio, July 22, 2010$26,000 · 50 kt wind · 4 eventsThe cold front that affected northern Ohio on 21 July became stationary and lifted north. A large area of convective thunderstorms passed through the lower Great Lakes during the evening hours.
• Damaging Wind in Ohio, July 22, 201055 kt wind · 1 eventAn area of thunderstorms produced severe weather across far southern Lower Michigan and moved into northwestern Ohio along a warm front. While the majority of the storms remained below severe limits, isolated wind damage occurred in Fulton County.
• Tornadoes in Minnesota, July 22, 2010EF0 · 4 eventsOn the afternoon of July 22nd, temperatures rose into the upper 70s with dew points in the middle 60s. An upper level disturbance combined with a surface trough to produce showers and thunderstorms.
• Damaging Winds in Idaho, July 22, 201052 kt wind · 3 eventsA severe thunderstorm brought large hail and damaging winds to portions of Bonner and Boundary counties. Trees were reported down two miles south of Bonners Ferry as well as in Ponderay. Estimated wind gusts of 60 miles per hour were also reported two miles NNE of Sandpoint.
• Damaging Wind in South Carolina, July 22, 2010$3,000 · 55 kt wind · 1 eventIsolated severe thunderstorms took down some trees in the Irmo Harbison Forest area.
• Damaging Winds in Georgia, July 22, 2010$26,000 · 2 eventsStrong subtropical high pressure continued to dominate the southeastern United States. Nonetheless, a very moist, hot, tropical-like air mass continued across the region.
• Hail and Damaging Winds in Colorado, July 22, 20101 in hail · 5 eventsSevere thunderstorms produced hail up to the size of quarters...wind gusts to around 60 mph and a short-lived funnel cloud over portions of Kiowa...Prowers and Otero Counties.
• Hail in Wyoming, July 22, 20101.75 in hail · 1 eventAmple moisture in conjunction with an upper level disturbance moving over the area caused severe thunderstorms to develop. Large hail was the only threat.
• Hail and Damaging Winds in Kansas, July 22, 2010$10,000 · 1.75 in hail · 6 eventsThunderstorms developed during the late afternoon and continued into the evening, producing marginally severe hail and damaging winds.
• Hail and Damaging Wind in South Dakota, July 22, 2010$75,000 · 1.75 in hail · 6 eventsA severe thunderstorm produced large hail across southwestern Fall River County.
• Hail and Damaging Winds in Nebraska, July 22, 2010$10,000 · 70 kt wind · 5 eventsA cold front pushing slowly to the southeast, was the focus for scattered thunderstorms, which brought some flash flooding, hail, and wind to the area.
• Damaging Winds in Montana, July 22, 2010$26,000 · 56 kt wind · 5 eventsAn upper level disturbance moved south out of British Columbia to produce a favorable environment for thunderstorms and and strong winds across northwest Montana. Numerous powerline and trees were blown down due to strong thunderstorm winds up to 65 mph.
• Tornado in Minnesota, July 22, 2010$50,000 · EF1 · 1 eventA line of severe thunderstorms developed across northwest Minnesota during the afternoon of Thursday July 22nd. These storms moved southeast into central Minnesota by the evening. One of the storms produce a brief tornado west of Alexandria.
• Damaging Winds in Illinois, July 22, 201056 kt wind · 2 eventsA severe thunderstorm downed trees in northeast Stephenson County during the evening of July 22nd.
• Flash Flood and Damaging Wind in Illinois, July 22 to 23, 201050 kt wind · 2 eventsStrong to severe thunderstorms moved across parts of northern Illinois during the late evening of July 22nd and early morning of July 23rd.
• Flash Flooding in Iowa, July 22 to 23, 2010$600,000 · 2 eventsThunderstorms with extremely heavy rain developed along a stationary front and moved from northeast Iowa into northwest Illinois. Some locations measured 5 to 7 inches of rainfall, causing localized flash flooding and pushing numerous creeks out of their banks.
• Flash Flooding in Illinois, July 22 to 23, 2010$3.0 million · 3 eventsThunderstorms with extremely heavy rain developed along a stationary front and moved from northeast Iowa into northwest Illinois. Some locations measured 5 to 7 inches of rainfall, causing localized flash flooding and pushing numerous creeks out of their banks.
• Flash Flooding and Heavy Rain in Iowa, July 23, 2010$1.5 million · 6 eventsA very unstable atmosphere was in place over Iowa with CAPE values around 2000 J/kg and lifted indices in the -8 to -10 C range. Precipitable water increased to around 2.25 inches along a boundary that extended from northeast into west central Iowa.
• Flash Flood in Iowa, July 23, 20101 eventThunderstorms produced heavy rain which caused flash flooding in and near the town of Ida Grove during the early morning of July 23rd.
• Hail and Damaging Winds in North Dakota, July 23, 2010$295,000 · 1.5 in hail · 8 eventsAn isolated severe thunderstorm produced several reports of large hail and two reports of severe thunderstorm winds over southwest North Dakota during the late morning and early afternoon hours of Friday, July 23rd.
• Damaging Wind and Heavy Rain in Arizona, July 23, 201052 kt wind · 3 eventsScattered thunderstorms developed across south central Arizona, in the Wickenburg area as well as portions of southern Gila county, on July 23. The storms produced strong gusty winds, and locally heavy rain which led to flooding of roads and washes.
• Hail and Damaging Winds in South Dakota, July 23, 2010$25,000 · 1.75 in hail · 4 eventsA severe thunderstorm produced large hail and gusty winds from north of Lodgepole to Lemmon.
• Flash Flood and Hail in Arizona, July 23, 2010$1,000 · 0.75 in hail · 2 eventsMonsoon moisture fueled isolated thunderstorms over Mohave County. One storm produced hail and flooding.
• Flash Flood and Damaging Winds in New Mexico, July 23, 2010$10,000 · 62 kt wind · 5 eventsDeep monsoon moisture produced thunderstorms with heavy rain over much of New Mexico. A couple of storms dumped heavy rain over the Magdalena Observatory and the Langmuir Laboratory for Atmospheric Research, resulting in the dirt road leading to the facilities being washed out.
• Damaging Winds in Pennsylvania, July 23, 2010$20,000 · 50 kt wind · 4 eventsStrong heating of a very moist warm sector air mass contributed to isolated severe thunderstorm development during the mid to late afternoon. The storms produced sporadic reports of wind damage in Elk, Clearfield, Clinton and Northern Centre Counties.
• Damaging Winds in Illinois, July 23, 2010$66,000 · 61 kt wind · 12 eventsIn association with a stationary front, a large complex of thunderstorms travelled generally along and south of the Interstate 80 corridor during the afternoon and early evening of the 23rd.
• Damaging Winds in Florida, July 23, 2010$17,000 · 56 kt wind · 2 eventsAfternoon thunderstorms produced high winds that damaged trees and roofs.
• Damaging Wind in New York, July 23, 2010$2,000 · 50 kt wind · 1 eventA warm front lifted north into central New York during the afternoon, putting the area into the warm and moist air mass of the warm sector, with temperatures in the mid 80s and dew points in the 70s.
• Damaging Winds in Pennsylvania, July 23, 2010$145,000 · 50 kt wind · 5 eventsScattered severe thunderstorms developed across northern portions of western Pennsylvania as a lake breeze front moved southeast from Lake Erie.
• Hail in Arizona, July 23, 20101 in hail · 1 eventA thunderstorm produced hail up to one inch in diameter about 2 miles south of Ash Fork.
• Tornadoes and Damaging Winds in Pennsylvania, July 23, 2010$400,000 · EF2 · 12 eventsA warm front lifted north into northeast Pennsylvania during the afternoon, putting the area into the warm and moist air mass of the warm sector, with temperatures in the mid 80s and dew points in the 70s.
• Tornado and Flood in Michigan, July 23, 2010$106,000 · EF0 · 19 eventsA tropical airmass and a frontal boundary lifted into southeast Michigan, which produced severe storms south of Eight Mile Road.
• Flash Flooding and Flooding in Illinois, July 23 to 24, 20101 death · $261 million · 61 kt wind · 35 eventsStrong to severe thunderstorms moved across northern Illinois during the afternoon and evening hours of July 23rd producing strong winds.
• Damaging Winds in South Carolina, July 23, 2010$10,000 · 60 kt wind · 3 eventsIsolated severe thunderstorms took down trees in near the tri county line area of Fairfield, Richland, and Lexington counties.
• Tornadoes and Hail in South Dakota, July 23, 20105 injured · EF0 · 21 eventsA United States record setting hailstone fell from a very strong supercell thunderstorm moving southeast across central South Dakota.
• Hail and Damaging Wind in Colorado, July 23, 201052 kt wind · 2 eventsA severe thunderstorm produced wind gusts to 60 mph and hail up to the size of nickels in Las Animas in Bent County.
• Damaging Winds and Lightning Strikes in New York, July 23, 20102 injured · $7,000 · 52 kt wind · 4 eventsSevere storms, associated with a warm front just to the north of the Tri-State, moved southeast into the region. A couple of these storms impacted parts of the Lower Hudson Valley and New York City.
• Damaging Winds in New Jersey, July 23, 201052 kt wind · 4 eventsSupercell type thunderstorms that formed near a warm frontal boundary produced wind damage in Sussex and Morris Counties during the evening of the 23rd.
• Damaging Wind in Alabama, July 23, 2010$3,000 · 60 kt wind · 1 eventAn isolated thunderstorm developed as the result of daytime heating.
• Damaging Winds in Michigan, July 23, 201060 kt wind · 6 eventsA hot and moist air mass was in place across southern Lower Michigan with temperatures in the 90s and dewpoints in the 70s. Strong wind fields in the lower levels were able to reach the ground in several locations causing damage.
• Flash Flooding and Hail in New Jersey, July 23, 2010$62,000 · 70 kt wind · 14 eventsSevere storms, including an isolated supercell, associated with a warm front just to the north of the Tri-State, moved southeast into the region. These thunderstorms produced heavy rain and flash flooding and impacted most of Northeast New Jersey.
• Damaging Winds in Indiana, July 23 to 24, 201060 kt wind · 2 eventsStrong to severe thunderstorms moved across parts of northwest Indiana during the evening of July 23rd and the morning hours of July 24th.
• Tornadoes and Flash Flood in South Dakota, July 23, 2010$1.1 million · EF0 · 34 eventsThunderstorms produced large hail, damaging winds, and brief tornadoes in southeast South Dakota during the evening of July 23rd. The storms moved east and affected the area mainly near and south of Interstate 90.
• Damaging Wind in Massachusetts, July 23, 2010$5,000 · 50 kt wind · 1 eventA warm front moving northward through southern New England resulted in a few thunderstorms, one of which produced tree damage in Freetown.
• Damaging Wind in Kansas, July 23, 2010$7,000 · 70 kt wind · 1 eventA line of scattered thunderstorms developed during the late afternoon from Tribune, Kansas northeast to Graham County. Wind damage occurred south of Bogue, Kansas with power poles blown down.
• Damaging Winds in Ohio, July 23, 2010$72,000 · 50 kt wind · 13 eventsAn area of low pressure located over the northern tip of the Lower Peninsula of Michigan and cold frontal system approaching from the west allowed for the development of a large convective complex to move through northern Ohio.
• Damaging Winds in Indiana, July 23, 201063 kt wind · 2 eventsA hot and moist air mass was in place across northern Indiana with temperatures in the 90s and dewpoints in the 70s. Strong wind fields in the lower levels were able to reach the ground in several locations causing damage.
• Damaging Winds in Pennsylvania, July 23, 2010$17,000 · 50 kt wind · 3 eventsAn area of low pressure located over the northern tip of the Lower Peninsula of Michigan and cold frontal system approaching from the west allowed for the development of a large convective complex to move through northwest Pennsylvania.
• Tornadoes and Flash Flooding in Iowa, July 23 to 24, 2010$1.3 million · EF1 · 13 eventsA very unstable airmass was in place over Iowa ahead of an approaching cold front and short wave. The cold front itself was over South Dakota, and set off a line of severe thunderstorms in front of it.
• Flash Flood in New York, July 23, 2010$25,000 · 1 eventStrong thunderstorms moved across Lake Erie into Chautauqua county during the late afternoon/evening hours. One of these thunderstorms dropped nearly two inches of rain in less than an hour. Extensive street and basement flooding in Jamestown resulted from the deluge.
• Damaging Winds in Minnesota, July 23, 2010$85,000 · 72 kt wind · 15 eventsThunderstorms produced damaging winds across several counties in southwest Minnesota during the late evening of July 23rd.
• Flash Flood and Flood in Wisconsin, July 23 to 24, 2010$1.3 million · 60 kt wind · 7 eventsThunderstorms developed along a cold front and brought very heavy rain to parts of southwest Wisconsin on July 23rd and 24th. This heavy rain created flooding problems that likely caused around a million dollars of damage in Grant County alone.
• Damaging Winds in Pennsylvania, July 23 to 24, 2010$175,000 · 50 kt wind · 7 eventsScattered severe thunderstorms developed across western Pennsylvania as a cold front moved across the region.
• Hail and Damaging Winds in Minnesota, July 23 to 24, 2010$10,000 · 56 kt wind · 10 eventsA complex of thunderstorms that developed across eastern South Dakota the early evening of Friday, July 23rd, quickly raced eastward into southwest Minnesota and caused a considerable amount of wind reports in excess of 60 mph along with numerous reports of large trees or large…
• Flash Flooding in New York, July 24, 20102 eventsA band of thunderstorms producing heavy rainfall moved eastward across southern Herkimer County during the early morning hours of Saturday, July 24th. Two to 4 inches of rain fell in just a few hours, resulting in significant flooding in the towns of Dolgeville and Middleville.
• Flash Flood in Iowa, July 24, 2010$500,000 · 1 eventStill supported by a nearby stationary front, yet another round of thunderstorms dropped an additional 3-5 inches of rain across northeast Iowa and northwest Illinois during the overnight hours of July 23rd into the early morning of July 24th.
• Flash Flooding in Illinois, July 24 to 25, 2010$11 million · 3 eventsStill supported by a nearby stationary front, a second round of thunderstorms dropped another 3-5 inches of rain across northwest Illinois during the overnight hours of July 23rd into the early morning of July 24th.
• Flash Flood in Wisconsin, July 24, 2010$140,000 · 1 eventAn isolated thunderstorm produced very heavy rain in Calumet County during the early morning hours. The volume of rainfall caused flash flooding in Stockbridge.
• Damaging Wind in Indiana, July 24, 201055 kt wind · 1 eventA complex of thunderstorms moved along a frontal boundary across Lake Michigan and into portions of northwestern Indiana. Some damage occurred in Laporte County before the storms weakened further.
• Damaging Wind in Michigan, July 24, 201055 kt wind · 1 eventA complex of thunderstorms moved along a frontal boundary across Lake Michigan and into far southern Lower Michigan. Some damage occurred in the Niles area before the storms weakened further.
• Flash Flood in Iowa, July 24, 2010$25 million · 1 eventAfter repeated rounds of heavy rain associated with a stationary frontal boundary, record flooding on the Maquoketa River resulted in the failure of the earthen berm on the south side of the Lake Delhi/Hartwick Lake dam during the late morning and afternoon of July 24.
• Flash Flood and Damaging Winds in Missouri, July 24, 2010$55,000 · 61 kt wind · 3 eventsA thunderstorm complex intensified as it approached the Mississippi River, producing damaging wind gusts that blew down trees and power lines in extreme northeast Missouri during the early afternoon on July 24th.
• Flash Flooding in New Mexico, July 24, 2010$1,000 · 2 eventsA deep subtropical moisture tap combined with weak steering flow allowed widespread heavy rainfall to develop across much of northern and central New Mexico. Training storms over the southeast corner of the state created torrential rainfall and localized flash flooding.
• Flash Flooding and Damaging Wind in Illinois, July 24 to 25, 201052 kt wind · 4 eventsA strong cold front moved through the region, triggering showers and thunderstorms. Numerous reports of damaging winds and flash flooding occurred with this event.
• Flash Flooding and Damaging Winds in Illinois, July 24 to 25, 2010$305,000 · 52 kt wind · 10 eventsAn outflow boundary from a large complex of thunderstorms that tracked across Iowa and northern Illinois the night before dropped southward on July 24th. Convection developed along this boundary, with a bow echo eventually taking shape across northern Missouri.
• Hail and Damaging Wind in Oklahoma, July 24, 201052 kt wind · 2 eventsWidely scattered thunderstorms developed during the afternoon hours across western Oklahoma. Due to the minimal instability, the thunderstorms mainly stayed below severe levels with very heavy rainfall the main threat.
• Damaging Wind in Connecticut, July 24, 2010$1,000 · 52 kt wind · 1 eventAn approaching cold front and upper level trough spawned an isolated severe thunderstorm in New London County.
• Flash Flood and Damaging Winds in Missouri, July 24, 2010$2,000 · 52 kt wind · 3 eventsIsolated pulse type severe thunderstorms, were observed across portions of the area, during the afternoon hours of July 24, 2010.
• Damaging Wind and Lightning Strike in Connecticut, July 24, 2010$20,000 · 50 kt wind · 2 eventsAn isolated severe thunderstorm produced wind damage in Windham County.
• Damaging Wind in Pennsylvania, July 24, 2010$3,000 · 50 kt wind · 1 eventAn area of low pressure was located over Ontario, Canada on July 24th. A cold front stretched south from the low across the Great Lakes and into Texas. This front progressed east during the day.
• Lightning Strike in Rhode Island, July 24, 2010$50,000 · 1 eventLightning strikes produced damage in parts of central and southern Rhode Island.
• Damaging Wind in Alabama, July 24, 2010$3,000 · 60 kt wind · 1 eventAfternoon heating and abundant moisture resulted in the development of thunderstorms that produced damaging wind.
• Tornado in New York, July 24, 2010$5.0 million · EF2 · 1 eventA tornado touched down in the Town of Chautauqua in Chautauqua County at 440 pm EDT. Initial touchdown occurred near the Chautauqua Gorge State Forest. The along the first half of the damage path the primary damage was done to trees.
• Flash Flood in Texas, July 24, 2010$10,000 · 1 eventA moist, moderately unstable environment was in place with weak upper level winds. Slow moving storms produced very heavy rains quickly over El Paso County.
• Damaging Wind in North Carolina, July 24, 201050 kt wind · 1 eventA slow moving line of thunderstorms developed across the Charlotte metro area. A little wind damage occurred on the southern end of the line.
• Tornado in New York, July 24, 2010$7.0 million · EF2 · 1 eventA tornado touched down in Randolph in Chautauqua County at 525 pm EDT. The initial touchdown occurred just south of Interstate 86 between exits 15 and 16. The tornado crossed Interstate 86 and damaged a gas station near exit 16 pulling the pumps out of the ground.
• Tornado in New York, July 24, 2010$1.0 million · EF1 · 1 eventAn aerial survey over damage in Cattaraugus County confirmed a tornado touched down in Great Valley at 525 pm EDT. Initial touchdown occurred in forested land west of the Village of Great Valley.
• Damaging Winds in New York, July 24, 2010$135,000 · 74 kt wind · 4 eventsThunderstorms developed across the western southern tier in a warm, humid airmass ahead of an approaching cold front. The thunderstorms produced damaging winds which downed trees in parts of Cattaraugus and Allegany counties.
• Hail and Damaging Winds in Kansas, July 24, 2010$1,000 · 1 in hail · 6 eventsNumerous strong to severe thunderstorms affected portions of south-central, east-central and southeast Kansas during the late afternoon and evening hours on the 24th, as a cold front approached from the northwest.
• Damaging Winds in North Carolina, July 24, 201050 kt wind · 2 eventsA weak upper level disturbance moving across a moist and extremely unstable airmass in place across central North Carolina resulted in an isolated severe storm in Stanly County.
• Flash Flood in Arizona, July 24, 20101 eventHeavy rain from a thunderstorm caused flash flooding over a road west of Cibecue.
• Tornado in New York, July 24, 2010$2.0 million · EF1 · 1 eventThe thunderstorm which produced a tornado in Randolph continued moving east across Cattaraugus County and produced a second tornado which touched down in the Town of Carrollton at 549 pm EDT.
• Tornado and Flash Flooding in Utah, July 24 to 26, 20103 injured · $25,000 · EF0 · 6 eventsThunderstorms continued across Utah, leading to more flash flooding in southern Utah, as well as an EF0 tornado near Wellington.
• Lightning Strike in Florida, July 24, 20101 injured · 1 eventNumerous thunderstorms developed across the area in the warm and moist environment behind Tropical Storm Bonnie. An individual was struck by lightning from one of these storms.
• Tornado and Hail in Pennsylvania, July 24, 2010$103,000 · EF1 · 18 eventsA strong mid-level disturbance and associated wind flow combined with a moderately unstable air mass to produce numerous severe thunderstorms over north-central Pennsylvania during the early to late evening hours.
• Damaging Wind in Georgia, July 24, 2010$20,000 · 1 eventDespite strong subtropical high pressure remaining over the region, a hot, very moist, tropical air mass provided ample support for afternoon and evening thunderstorms. An apparent very weak surface boundary provided additional weak focus for thunderstorms across north Georgia.
• Damaging Winds in Ohio, July 24, 2010$113,000 · 50 kt wind · 9 eventsAn area of low pressure was located over Ontario, Canada on July 24th. A cold front stretched south from the low across the Great Lakes and into Texas. This front progressed east during the day.
• Damaging Winds in New York, July 24, 2010$15,000 · 50 kt wind · 5 eventsA cold front stretching from the Great Lakes to the Central Plains moved east during the day as low pressure tracked into eastern Canada. The cold front moved into a very warm and humid air mass in place across central New York, with dew points in the low to mid 70s.
• Flash Flood in Arizona, July 24, 20101 eventHeavy rain from a thunderstorm caused flash flooding near the community of Wide Ruins.
• Flash Flood and Damaging Winds in Indiana, July 24, 201055 kt wind · 4 eventsA cold front across Illinois and an outflow boundary across central Indiana tapped strong instability and wind fields to allow for thunderstorm development across Illinois which tracked into much of northern Indiana.
• Damaging Winds in Indiana, July 24, 2010$10,000 · 55 kt wind · 3 eventsStrong to severe thunderstorms moved across parts of northwest Indiana during the evening hours of July 24th.
• Flash Flood and Damaging Winds in Missouri, July 24, 201052 kt wind · 6 eventsA strong cold front moved through the region, triggering showers and thunderstorms. Numerous reports of damaging winds and flash flooding occurred with this event.

Every billion-dollar disasterEvery storm of 2010Tornadoes in 2010

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.