Southeast/Ohio Valley/Midwest Tornadoes

Losses, 2024 dollars

$14 billion

Losses at the time

$10 billion

Deaths

321

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 Texas, April 23, 20111.75 in hail · 4 eventsThe cold front that had stalled along the I-44 corridor the day before, finally began to move slowly toward south-central Oklahoma and adjacent areas of northern Texas on the 23rd.
• Flash Flooding and Flooding in Kentucky, April 24, 20111.75 in hail · 19 eventsMultiple episodes of severe weather affected the region on April 24. During the morning storms moved in from the south producing a couple of damaging wind gusts. Later in the afternoon the atmosphere became unstable once again with some dry air intruding at the mid levels.
• Tornadoes and Flash Flooding in Arkansas, April 24 to 30, 2011$2.2 million · EF2 · 31 eventsA stationary front remained draped across Southern Missouri into Western Kentucky from April 24th, 2011 into April 25th, 2011. A very warm and unstable atmosphere was in place across the Mid-South ahead of the front.
• Flash Flood and Flooding in Missouri, April 24 to 30, 2011$4.8 million · 6 eventsThe Current, Black, and St. Francis Rivers rose above flood stage late in the month. A series of heavy rainfall events gradually forced the rivers upward at an unsteady rate. Another round of heavy rain in early May sent some of the rivers to record high flood crests.
• Hail in Tennessee, April 24, 20110.88 in hail · 3 eventsThrough the late morning and early afternoon hours on Sunday, April 24th, as an area of showers and thunderstorms moved to the northwest acorss northwestern and northern portions of Middle Tennessee, some thunderstorms reached strong thresholds.
• Tornado in Nevada, April 24, 2011EF0 · 1 eventAn EF0 tornado touched down in a rural part of southern Humboldt county. No observable damage was found.
• Hail and Damaging Winds in Oklahoma, April 24, 2011$2,000 · 1.75 in hail · 18 eventsThe same boundary that had been the main weather player the previous few days, became the focus for thunderstorm development once again during the afternoon/evening of the 24th.
• Flash Flooding and Hail in Missouri, April 24 to 26, 2011$60,000 · 1.75 in hail · 7 eventsSeveral clusters of thunderstorms occurred along a nearly stationary surface front that extended from northern Arkansas northeast across the Lower Ohio Valley.
• Flash Flooding and Hail in Kentucky, April 24 to 25, 2011$130,000 · 1.25 in hail · 16 eventsSeveral clusters of thunderstorms occurred along a nearly stationary surface front that extended from northern Arkansas northeast across the Lower Ohio Valley.
• Tornadoes and Flash Flood in Texas, April 24 to 25, 2011$150,000 · EF0 · 38 eventsThe combination of a stationary east/west front intersecting with a dryline and favorable shear and instability caused severe thunderstorms to develop during the afternoon along mainly the I-20 corridor.
• Tornadoes and Flash Flooding in Arkansas, April 24 to 30, 20117 deaths · 59 injured · $240 million · EF3 · 209 eventsFrom the 24th through the 27th, the arrival of a slow-moving cold front and several low pressure areas aloft triggered several rounds of thunderstorms. Tornadoes, severe storms, and flash flooding resulted. Widespread areal flooding followed the flash flooding.
• Hail and Damaging Winds in Virginia, April 24, 2011$8,000 · 1 in hail · 13 eventsA southerly flow around high pressure over the Atlantic Ocean provided a warm and moist airmass across the region. A pressure trough combined with the warm and moist conditions to trigger showers and thunderstorms.
• Hail and Damaging Winds in Maryland, April 24, 2011$3,000 · 1.25 in hail · 12 eventsA southerly flow around high pressure over the Atlantic Ocean provided a warm and moist airmass across the region. A pressure trough combined with the warm and moist conditions to trigger showers and thunderstorms.
• Tornadoes and Flash Flooding in Oklahoma, April 24 to 25, 2011$220,000 · EF0 · 37 eventsOn the afternoon of the 24th, a stalled frontal boundary extended across northwestern Arkansas and far southeastern Oklahoma.
• Damaging Wind in Maryland, April 24, 201150 kt wind · 1 eventA line of showers and thunderstorms developed south of a nearly stationary front over Pennsylvania and moved across the Eastern Shore during the late afternoon of the 24th.
• Hail and Damaging Winds in Texas, April 24 to 25, 2011$502,000 · 2.75 in hail · 68 eventsSeveral rounds of severe thunderstorms developed to the west of north Texas along a stalled frontal boundary. These storms moved east and affected areas north of a Comanche to Dallas to Delta County line.
• Flash Flooding and Hail in Arkansas, April 24 to 25, 2011$175,000 · 1.75 in hail · 18 eventsOn the afternoon of the 24th, a stalled frontal boundary extended through northwestern Arkansas and far southeastern Oklahoma.
• Hail in Texas, April 24, 20111 in hail · 1 eventAn isolated severe thunderstorm developed across the northern Texas Panhandle during the early evening hours producing hail. No damages or injuries were reported.
• Hail in District of Columbia, April 24, 20111 in hail · 1 eventA southerly flow around high pressure over the Atlantic Ocean provided a warm and moist airmass across the region. A pressure trough combined with the warm and moist conditions to trigger showers and thunderstorms.
• Hail in Kansas, April 24, 20111.75 in hail · 8 eventsA stalled frontal boundary over Oklahoma, Arkansas and Missouri resulted in a few clusters of strong to severe thunderstorms over extreme southeast Kansas during the evening hours on the 24th. Along with localized areas of heavy rain, large hail up to golfball size was reported.
• Damaging Winds in Oklahoma, April 24, 201153 kt wind · 2 eventsA stationary front was located across Southeast Oklahoma during the late evening and overnight hours of April 24th. Ahead of the boundary...a very unstable airmass was in place with an abundance of moisture pooling ahead of the frontal boundary.
• Tornado in Arkansas, April 24, 2011$70,000 · EF1 · 1 eventA stationary front was located across Southeast Oklahoma during the late evening and overnight hours of April 24th. Ahead of the boundary...a very unstable airmass was in place with an abundance of moisture pooling ahead of the frontal boundary.
• Hail in Illinois, April 24, 20111 in hail · 1 eventSeveral clusters of thunderstorms occurred along a nearly stationary surface front that extended from northern Arkansas northeast across the Lower Ohio Valley.
• Hail in Texas, April 25, 20111 in hail · 1 eventThe same boundary that had been the main weather player the previous few days, became the focus for thunderstorm development once again during the late night hours of the 25th. Ahead of the front, favorable conditions existed for robust severe thunderstorms.
• Flash Flood and Hail in Kansas, April 25, 20111 in hail · 3 eventsNumerous showers and thunderstorms from the early morning into the afternoon on the 25th affected portions of south-central and southeast Kansas, in response to a strong upper level disturbance approaching from the southwest.
• Tornadoes and Flash Flooding in Oklahoma, April 25, 2011$5,000 · EF0 · 10 eventsA stationary frontal boundary remained anchored across north Texas into eastern Oklahoma during the morning hours and throughout the day of April 25th.
• Tornadoes and Flash Flooding in Arkansas, April 25, 2011$5,000 · EF0 · 15 eventsA stationary frontal boundary remained anchored across north Texas into eastern Oklahoma during the morning hours and throughout the day of April 25th.
• Flash Flooding and Hail in Oklahoma, April 25, 2011$15,000 · 1.25 in hail · 17 eventsPeriods of showers and thunderstorms resulted in widespread heavy rainfall on the 25th with a frontal boundary extending through eastern Oklahoma and an upper level disturbance approaching the region.
• Tornadoes and Flash Flooding in Texas, April 25, 20111 injured · $488,000 · EF0 · 87 eventsNumerous severe thunderstorms developed along a dryline as an upper level disturbance approached north Texas. The atmosphere was very unstable and perfectly primed for supercell thunderstorms.
• Hail and Damaging Wind in Oklahoma, April 25, 2011$2,000 · 1.75 in hail · 17 eventsA front that was located from eastern into south-central Oklahoma continued to be the focus for thunderstorms. Thunderstorms developed along and north of the boundary from late morning into the evening hours.
• Tornadoes and Flash Flooding in Tennessee, April 25 to 30, 20115 injured · $6.3 million · EF2 · 41 eventsA stationary front remained draped across Southern Missouri into Western Kentucky from April 24th, 2011 into April 25th, 2011. A very warm and unstable atmosphere was in place across the Mid-South ahead of the front.
• Flash Flooding and Hail in Arkansas, April 25, 20115 deaths · $350,000 · 0.75 in hail · 12 eventsPeriods of showers and thunderstorms resulted in widespread heavy rainfall on the 25th with a frontal boundary extending through northwestern Arkansas and an upper level disturbance approaching the region.
• Hail and Damaging Winds in Georgia, April 25, 20112 injured · $491,000 · 1.25 in hail · 19 eventsA broad and increasingly diffluent upper trough was digging into the south central U.S. with broad southwest flow increasing across the southeast U.S. on the back side of a subtropical ridge located across the western Atlantic.
• Damaging Winds in Pennsylvania, April 25, 2011$530,000 · 50 kt wind · 8 eventsScattered severe thunderstorms developed well ahead of a cold front in an unstable airmass.
• Hail in Kansas, April 25, 20110.88 in hail · 2 eventsIsolated strong thunderstorms moved over portions of southeastern Kansas during the afternoon hours. They occurred in the wake of significant flooding across the region as low pressure moved towards the region.
• Hail in Kansas, April 25, 20110.75 in hail · 1 eventAn area of thunderstorms developed along a warm front, and caused thunderstorms with one report of hail, across extreme eastern Kansas, during the afternoon hours of April 25, 2011.
• Hail and Damaging Wind in Virginia, April 25, 2011$9,000 · 1 in hail · 5 eventsMoist southerly winds in advance of a cold front along with warm temperatures created enough instability to produce scattered thunderstorms. A few of these storms turned severe, producing damaging winds and large hail.
• Hail in Pennsylvania, April 25, 20111.75 in hail · 6 eventsStrong afternoon heating of a moist air mass along and south of a retreating stationary front triggered isolated strong to severe thunderstorms across northern Pennsylvania. The thunderstorm environment was conducive for supercell structures, but no tornadoes were reported.
• Hail and Damaging Winds in West Virginia, April 25, 2011$38,000 · 50 kt wind · 12 eventsIn the warm sector, south and east of a nearly stationary front, one cluster of thunderstorms formed late in the day across southwest Virginia into southern West Virginia. Later in the evening, the outflow boundary helped formed isolated convection further west.
• Flash Flooding in Kansas, April 25, 20114 eventsMultiple rounds of thunderstorms produced very heavy rainfall across southeast Kansas over the course of a week. A persistent trough over the central plains brought multiple upper level storm systems over the region which produced intense thunderstorms with very heavy rainfall.
• Damaging Winds in Idaho, April 25, 201152 kt wind · 2 eventsA strong cold front produced high winds and isolated severe convection leading to significant wind damage to locations in the Treasure Valley of Southwest Idaho on the 25th.
• Hail in South Carolina, April 25, 20111 in hail · 1 eventScattered thunderstorms developed over the western Part of the Upstate during the afternoon hours. One of the storms produced large hail.
• Hail in Kansas, April 25, 20111 in hail · 1 eventOn the afternoon of April 25th, a lone cell developed and tracked across Anderson County producing severe hail.
• Hail and Damaging Winds in Ohio, April 25, 2011$77,000 · 50 kt wind · 3 eventsIn the warm sector, south and east of a nearly stationary front, one cluster of thunderstorms formed during the afternoon across southeast Ohio.
• Damaging Wind in West Virginia, April 25, 2011$10,000 · 60 kt wind · 1 eventSoutherly winds in advance of a cold front ushered in low level moisture. Warm temperatures combined with this moisture to produce enough instability to trigger isolated severe thunderstorms. One of these storms brought damaging winds.
• Tornadoes and Flash Flood in Texas, April 25, 20111 injured · $1.2 million · EF1 · 23 eventsA stationary frontal boundary remained anchored across north Texas into eastern Oklahoma during the morning hours and throughout the day of April 25th.
• Flash Flood and Hail in Tennessee, April 25, 2011$140,000 · 1 in hail · 12 eventsA boundary across the area triggered thunderstorms in east Tennessee during the afternoon and evening hours. A few became severe producing large hail and damaging thunderstorm wind.
• Damaging Winds in Tennessee, April 25, 2011$352,000 · 85 kt wind · 4 eventsOn Monday, April 25th, during the mid afternoon hours, a severe thunderstorm developed over Steward County resulting in downed trees. During the late evening hours on that same day, a line of showers and thunderstorms moved into western portions of the mid state.
• Hail in Virginia, April 25, 20111 in hail · 1 eventIn the warm sector, south and east of a nearly stationary front, one cluster of thunderstorms formed late in the day across southwest Virginia into southern West Virginia.
• Hail and Damaging Wind in Ohio, April 25, 2011$25,000 · 50 kt wind · 5 eventsScattered severe thunderstorms developed well ahead of a cold front in an unstable airmass.
• Damaging Winds in Virginia, April 25, 2011$23,000 · 52 kt wind · 3 eventsA boundary across the area triggered thunderstorms across southwest Virginia during the evening hours. A few of the storms became severe and produced thunderstorm wind damage.
• Tornado and Hail in Kentucky, April 25, 2011$100,000 · EF1 · 6 eventsA surface low pressure center developed northeastward from south central Oklahoma to southwest Missouri. A gradual increase in the warm sector southerly low level jet occurred as the surface low deepened.
• Hail in Georgia, April 25, 20111 in hail · 1 eventScattered thunderstorms developed across northeast Georgia during the afternoon hours. One of the storms produced large hail as it moved over the mountains.
• Hail in Texas, April 25, 20111.25 in hail · 2 eventsSevere thunderstorms developed across parts of the eastern Texas Panhandle during the late afternoon and early evening hours producing large hail. No damages or injuries were reported.
• Hail in West Virginia, April 25, 20110.75 in hail · 1 eventScattered severe thunderstorms developed well ahead of a cold front in an unstable airmass.
• Tornadoes and Flash Flooding in Missouri, April 25 to 27, 2011$663,000 · EF1 · 13 eventsA surface low pressure center developed northeastward from south central Oklahoma to southwest Missouri. A gradual increase in the warm sector southerly low level jet occurred as the surface low deepened.
• Lightning Strike in Florida, April 25, 20111 injured · 1 eventWeak late afternoon seabreeze thunderstorms developed along the Florida west coast. An adult female was struck by lightning from one of the thunderstorms.
• Flash Flooding in Ohio, April 25, 2011$180,000 · 3 eventsA large area of rain and embedded thunderstorms moved from central into northern Ohio during the afternoon and early evening hours as warm front lifted north over Lake Erie.
• Lightning Strike in North Carolina, April 25, 2011$900,000 · 1 eventLightning struck a house in the Glenridge area, igniting a fire that completely destroyed the home.
• Damaging Winds and Lightning Strike in Utah, April 25, 2011$50,000 · 63 kt wind · 3 eventsAnother cold front moved through northern Utah, initiating thunderstorms across the area, a couple of which produced severe wind gusts.
• Damaging Winds in Kentucky, April 25, 2011$73,000 · 60 kt wind · 15 eventsDuring the afternoon and evening of April 25th, a MCS and a couple single cells moved north east across the eastern mountainous counties. The event prompted the issuance of 6 severe thunderstorm warnings as most of the storm reports were related to wind damage.
• Flash Flooding and Damaging Wind in Illinois, April 25, 2011$250,000 · 51 kt wind · 4 eventsA surface low pressure center developed northeastward from south central Oklahoma to southwest Missouri. A gradual increase in the warm sector southerly low level jet occurred as the surface low deepened.
• Flash Flooding and Hail in Pennsylvania, April 25 to 27, 2011$3.2 million · 1.75 in hail · 24 eventsA slow moving warm front pushed northward across northeast Pennsylvania late in the afternoon on April 25th.
• Tornadoes and Hail in Texas, April 25 to 26, 2011$142,000 · EF1 · 12 eventsSevere thunderstorms erupted along the dry line with the help of a shortwave aloft and produced large hail, strong damaging winds and tornadoes.
• Damaging Wind in Kentucky, April 25, 2011$2,000 · 50 kt wind · 1 eventAn outflow boundary, from earlier convection to the east, helped trigger a few evening thunderstorms.
• Damaging Winds in Louisiana, April 25, 201155 kt wind · 2 eventsA stationary frontal boundary remained anchored across north Texas into eastern Oklahoma during the morning hours and throughout the day of April 25th.
• Tornadoes and Flash Flooding in New York, April 25 to 27, 2011$10 million · EF1 · 38 eventsA slow moving warm front pushed northward across central New York late in the afternoon on April 25th.
• Tornadoes and Flash Flooding in Mississippi, April 25 to 27, 201122 deaths · 84 injured · $10 million · EF5 · 72 eventsA stationary front remained draped across Southern Missouri into Western Kentucky from April 24th, 2011 into April 25th, 2011. A very warm and unstable atmosphere was in place across the Mid-South ahead of the front.
• Hail and Damaging Winds in Texas, April 25 to 26, 2011$14,000 · 1 in hail · 8 eventsSeveral supercell thunderstorms moving southeastward across central Texas spread across southeast Texas during the overnight hours from late on April 25 into early on April 26. Several reports of large hail and damaging winds were received.
• Tornadoes and Hail in Kentucky, April 25 to 26, 2011$4.2 million · EF3 · 17 eventsA pronounced mid-level shortwave trough and associated 70 to 80 knot mid-level jet progressed northeastward from the southern Plains across Arkansas and Missouri. An associated surface low developed northeastward from southwest Missouri toward northwest Illinois.
• Hail and Damaging Winds in Tennessee, April 26, 2011$170,000 · 1 in hail · 13 eventsDuring the early morning hours on Tuesday, April 26th, a line of showers and thunderstorms moved into central and eastern portions of Middle Tennessee.
• Hail and Damaging Winds in Louisiana, April 26, 2011$108,000 · 1.75 in hail · 11 eventsSeveral supercell thunderstorms moving southeastward across southeast Texas congealed into a line and spread across southwest Louisiana during the early morning hours on April 26. Several reports of large hail and damaging winds were received.
• Damaging Wind in Alabama, April 26, 2011$100,000 · 61 kt wind · 1 eventA quasi-linear convective system (QLCS) in the form of a squall line, raced east through northern Alabama between 1 and 3 am, weakening as it met more stable air.
• Tornadoes and Hail in Kentucky, April 26, 20111 injured · EF2 · 36 eventsShortly after one o'clock in the morning on April 26, 2011 a powerful squall line brought damaging straight-line winds to much of Logan County. The strongest winds, possibly up to 100 mph, swept from Olmstead to Chandlers Chapel.
• Tornadoes and Flash Flooding in Tennessee, April 26 to 27, 20111 death · 1 injured · $1.5 million · EF1 · 83 eventsDuring the early morning hours on Wednesday, April 27th, twelve tornadoes occurred across Middle Tennessee. Seven of these were EF0 tornadoes and five of these were EF1 tornadoes.
• Hail and Damaging Winds in Texas, April 26, 2011$22,000 · 1.75 in hail · 5 eventsSevere thunderstorms erupted in the early morning hours and again in the evening hours from the interaction of a dry line and an upper level disturbance.
• Tornadoes and Damaging Winds in Indiana, April 26, 2011$355,000 · EF2 · 5 eventsA pronounced mid-level shortwave trough and associated 70 to 80 knot mid-level jet progressed northeastward from the southern Plains across Arkansas and Missouri. An associated surface low developed northeastward from southwest Missouri toward northwest Illinois.
• Flash Flood and Hail in Indiana, April 26 to 27, 2011$12,000 · 1 in hail · 3 eventsA weakening line of thunderstorms pushed into southern portions of central Indiana from the southwest during the 26th of April. Only isolated severe reports across southern portions of the forecast area were received.
• Damaging Winds in Louisiana, April 26, 201155 kt wind · 3 eventsSevere thunderstorms that plagued portions of northwest and north Central Louisiana during the late evening hours of the 25th continued in the predawn hours of the 26th.
• Damaging Wind and High Wind in Louisiana, April 26, 2011$725,000 · 50 kt wind · 3 eventsGradient induced high winds associated with a wake low occurred during the early morning hours of April 26th generally along the Interstate 20 corridor. The wake low and associated damaging winds spread from west to east along this corridor.
• Tornadoes and Hail in Mississippi, April 26, 2011$1.2 million · EF1 · 13 eventsGradient induced high winds associated with a wake low occurred during the early morning hours of April 26th generally along the Interstate 20 corridor. The wake low and associated damaging winds spread from west to east along this corridor.
• Damaging Winds in Louisiana, April 26, 2011$2,000 · 56 kt wind · 4 eventsA mid-level impulse moving across southern Louisiana produced isolated reports of severe weather.
• Damaging Wind in Mississippi, April 26, 20111 death · $5,000 · 56 kt wind · 1 eventA mid-level impulse moving across southern Louisiana produced isolated reports of severe weather.
• Hail and Damaging Winds in Pennsylvania, April 26, 2011$220,000 · 56 kt wind · 10 eventsAhead of a slow moving cold front scattered severe thunderstorms developed in an unstable airmass across western Pennsylvania and northern West Virginia.
• Tornado in North Carolina, April 26, 2011$500 · EF0 · 1 eventA weak area of low pressure moved north across eastern North Carolina during the afternoon of April 26th. The atmosphere was slightly unstable and a few thunderstorms developed with one producing a weak tornado in Martin County.
• Tornado and Wildfire in Texas, April 26, 2011$350,000 · EF0 · 7 eventsThe second in a series of potent upper air storm systems transited the Southern Plains on the 26th.
• Hail in West Virginia, April 26, 20111 in hail · 4 eventsDifferential heating and a mid level disturbance helped trigger new convection during the early afternoon. This was to the east of a weakening area of showers and cooler surface temperatures.
• Hail in South Carolina, April 26, 20111 in hail · 1 eventA deep tropical moisture plume in combination with an upper level disturbance, resulted in scattered strong to severe thunderstorms over southern South Carolina.
• Hail and Damaging Winds in South Carolina, April 26, 2011$37,000 · 1.25 in hail · 8 eventsMulticellular storms produced some large hail and wind damage over the Midlands and Pee Dee regions of SC.
• Damaging Wind in West Virginia, April 26, 2011$35,000 · 50 kt wind · 1 eventAhead of a slow moving cold front scattered severe thunderstorms developed in an unstable airmass across western Pennsylvania and northern West Virginia.
• Hail and Damaging Winds in Pennsylvania, April 26 to 27, 2011$215,000 · 50 kt wind · 7 eventsScattered severe thunderstorms developed well ahead of a strong cold fornt moving across the upper Ohio Valley.
• Flash Flood and Hail in Pennsylvania, April 26 to 27, 2011$1.9 million · 2 in hail · 18 eventsSeveral bands of strong to severe thunderstorms developed along two north-south axes of low level confluence across central Pennsylvania into upstate New York.
• Hail and High Wind in Texas, April 26, 201151 kt wind · 3 eventsSevere thunderstorms developed across the central Texas Panhandle during the mid afternoon and early evening hours. No damages or injuries were reported.
• Tornadoes and Hail in Texas, April 26, 20111 death · 2 injured · $1.5 million · EF1 · 72 eventsAnother round of severe weather occurred on April 26th as another upper level disturbance rounded a larger upper trough and moved into north Texas. A warm front was draped across the region, and the environment was conducive for supercell thunderstorms and tornadoes.
• Tornadoes and Flash Flood in Kentucky, April 26 to 27, 2011$202,000 · EF0 · 33 eventsAnother mid-level shortwave trough translated quickly eastward across the southern Plains. This feature contributed to a severe weather outbreak in the Lower Ohio Valley.
• Tornado and Hail in Michigan, April 26, 20119 injured · $24 million · EF0 · 9 eventsSevere thunderstorms developed during the late afternoon and evening hours of April 26 as an upper level trough and cold front approached our region. Several low topped supercells developed and produced numerous reports of large hail up to around two inches in diameter.
• Damaging Wind in North Carolina, April 26, 201150 kt wind · 1 eventAn upper level disturbance combined with an increasingly moist air mass to produce an isolated severe storm.
• Tornado and Hail in Arkansas, April 26 to 27, 2011$35,000 · EF1 · 9 eventsA very volatile atmosphere developed during the late afternoon...evening and overnight hours of April 26th across the Four State Region. An area of low pressure moved from the Texas Hill Country into Northeast Texas during the afternoon.
• Tornadoes and Flash Flooding in New York, April 26 to 28, 2011$11 million · EF2 · 35 eventsA significant severe weather outbreak developed across central New York as a storm system moved east from the Great Lakes. First, showers and thunderstorms developed early in the evening on the 27th, as an upper level disturbance approached the region.
• Hail and Damaging Winds in Virginia, April 26, 2011$10,000 · 1.25 in hail · 11 eventsSoutherly winds out ahead of a deep trough over the southern plains ushered in warm and humid air into the region. The resulting instability, combined with moderate winds aloft, combined to produce an environment marginally favorable for severe weather.
• Hail and Damaging Winds in North Carolina, April 26, 2011$5,000 · 1 in hail · 3 eventsSoutherly winds out ahead of a deep trough over the southern plains ushered in warm and humid air into the region. The resulting instability, combined with moderate winds aloft, combined to produce an environment marginally favorable for severe weather.
• Flash Flooding and Hail in New York, April 26, 2011$2.3 million · 1 in hail · 4 eventsA line of showers and thunderstorms crossed the area during the evening hours. The thunderstorms were accompanied by strong winds, large hail and intense rains. The winds downed trees and wires on Whig hill and one inch hall fell in Scio.
• Tornado and Hail in Oklahoma, April 26, 2011$35,000 · EF0 · 28 eventsOn the afternoon of the 26th, a frontal boundary began to lift north out of Texas with surface low pressure developing on the front over southeastern Oklahoma.
• Hail in Indiana, April 26, 20111 in hail · 2 eventsA weak disturbance moved through portions of lower Michigan and northern Indiana during the afternoon hours of the 26th. Sufficient instability and shear exist to allow for thunderstorms to develop and produce marginally severe hail and locally gusty winds.
• Hail and Damaging Winds in West Virginia, April 26, 2011$4,000 · 1 in hail · 8 eventsA southerly flow around high pressure off the east coast transported plenty of moisture from the Gulf of Mexico and Atlantic Ocean across the area. The warm and moist southerly flow combined with a pressure trough to trigger showers and thunderstorms.
• Hail and Damaging Winds in Virginia, April 26, 20111 injured · $12,000 · 1.25 in hail · 5 eventsA southerly flow around high pressure off the east coast transported plenty of moisture from the Gulf of Mexico and Atlantic Ocean across the area. The warm and moist southerly flow combined with a pressure trough to trigger showers and thunderstorms.
• Hail and Damaging Wind in Michigan, April 26, 20111 in hail · 5 eventsA weak disturbance moved through portions of lower Michigan and northern Indiana during the afternoon hours of the 26th. Sufficient instability and shear exist to allow for thunderstorms to develop and produce marginally severe hail and locally gusty winds.
• Tornadoes and Hail in Texas, April 26 to 27, 2011$330,000 · EF2 · 20 eventsA very volatile atmosphere developed during the late afternoon...evening and overnight hours of April 26th across the Four State Region. An area of low pressure moved from the Texas Hill Country into Northeast Texas during the afternoon.
• Tornado and Hail in Arkansas, April 26, 2011$415,000 · EF0 · 20 eventsOn the afternoon of the 26th, a frontal boundary began to lift north out of Texas with surface low pressure developing on the front over southeastern Oklahoma.
• Hail in Indiana, April 26, 2011$20,000 · 2 in hail · 3 eventsAnother mid-level shortwave trough translated quickly eastward across the southern Plains. This feature contributed to a severe weather outbreak in the Lower Ohio Valley.
• Hail in Oklahoma, April 26, 20111 in hail · 5 eventsSevere thunderstorms developed across the central Oklahoma Panhandle during the early evening hours producing hail. No damages or injuries were reported.
• Tornado and Flash Flood in Arkansas, April 26 to 27, 2011$165,000 · EF1 · 7 eventsA historic outbreak of tornadoes across the Ark-La-Miss began late on Tuesday, April 26th continuing into the early morning hours of Wednesday, April 27th. The event ramped up again during the early afternoon of April 27th continuing into the early evening.
• Hail in Indiana, April 26, 20111.75 in hail · 2 eventsDuring the late afternoon on April 26th, convection developed in west central Kentucky. Just west of Ohio County, a storm split into left and right moving storms.
• Tornado and Hail in Florida, April 26, 2011EF0 · 2 eventsAn isolated severe thunderstorm produced hail up to quarter size and a brief landspout tornado in St. Lucie County. The touchdown was brief and in a rural area, producing no damage.
• Hail in Missouri, April 26, 20111 in hail · 1 eventIsolated strong thunderstorms moved over portions of southwestern Missouri during the evening hours.
• Tornadoes and Hail in Mississippi, April 26 to 27, 201112 deaths · 52 injured · $28 million · EF5 · 102 eventsA historic outbreak of tornadoes across the Ark-La-Miss began late on Tuesday, April 26th continuing into the early morning hours of Wednesday, April 27th. The event ramped up again during the early afternoon of April 27th continuing into the early evening.
• Hail in Michigan, April 26, 20111 in hail · 2 eventsA warm front lifting north produced a few strong to severe thunderstorms in and around Saginaw Bay.
• Hail in Oklahoma, April 26, 20111 in hail · 1 eventA very volatile atmosphere developed during the late afternoon...evening and overnight hours of April 26th across the Four State Region. An area of low pressure moved from the Texas Hill Country into Northeast Texas during the afternoon.
• Tornadoes and Flash Flooding in Louisiana, April 26 to 27, 20112 deaths · 2 injured · $16 million · EF2 · 63 eventsA very volatile atmosphere developed during the late afternoon...evening and overnight hours of April 26th across the Four State Region. An area of low pressure moved from the Texas Hill Country into Northeast Texas during the afternoon.
• Hail and Damaging Wind in Michigan, April 26, 2011$12,000 · 1 in hail · 3 eventsAn incoming warm triggered a few strong to severe thunderstorms in Central Lower Michigan.
• Flash Flood and Flooding in New York, April 26 to 27, 2011$4.5 million · 3 eventsSnowmelt from an above normal snowpack and daytime high temperatures in the 50s and 60s on the 25th and 26th, combined with rainfall of a half to one inch early on the 26th to set the stage for a significant flood event across the region.
• Flash Flooding and Flooding in Vermont, April 26 to 29, 2011$5.9 million · 10 eventsSnowmelt from an above normal snowpack and daytime high temperatures in the 50s and 60s on the 25th and 26th, combined with rainfall of a half to one inch early on the 26th to set the stage for a significant flood event across the region.
• Tornadoes and Flash Flood in Louisiana, April 26 to 27, 20111 injured · $1.9 million · EF2 · 18 eventsA historic outbreak of tornadoes across the Ark-La-Miss began late on Tuesday, April 26th continuing into the early morning hours of Wednesday, April 27th. The event ramped up again during the early afternoon of April 27th continuing into the early evening.
• Damaging Winds in Pennsylvania, April 26, 2011$25,000 · 56 kt wind · 4 eventsA squall line of strong to severe thunderstorms near a northward moving warm front produced wind damage in the Lehigh Valley and the Poconos around midnight EDT on the 27th.
• Flash Flood and Flood in New York, April 27 to 28, 20112 eventsThunderstorms producing very heavy rainfall repeatedly moved over the southern Adirondacks Tuesday afternoon and night causing rapid rises on local rivers, streams and creeks, resulting in flooding and washouts of some roadways.
• Tornadoes and Flood in Tennessee, April 27 to 28, 201133 deaths · 423 injured · $84 million · EF4 · 165 eventsFavorable atmospheric conditions resulted in a deadly tornado outbreak across east Tennessee on the 27th. The thunderstorms produced more than 50 tornadoes across the east Tennessee area with 32 deaths and more than 200 injured.
• Tornadoes and Hail in Alabama, April 27, 2011100 deaths · 124 injured · $1.1 billion · EF5 · 83 eventsA powerful storm system roared across the Southeast United States on Wednesday, April 27, 2011. In the wake of this system, hundreds of people were left injured and/or homeless, along with approximately 100 people who lost their lives in the northern Alabama area alone.
• Tornadoes and Hail in Alabama, April 27, 2011149 deaths · 2,001 injured · $3.2 billion · EF5 · 119 eventsA powerful storm system crossed the Southeast United States on Wednesday, April 27, 2011, resulting in a large and deadly tornado outbreak.
• Tornadoes and Hail in Tennessee, April 27, 2011$5,000 · EF3 · 6 eventsA powerful storm system roared across the Southeast United States on Wednesday, April 27, 2011. This storm system would be responsible for one of the largest and deadliest tornado outbreaks to ever impact much of the southeastern region.
• Tornadoes and Flood in Kentucky, April 27, 2011EF1 · 13 eventsA large convective complex with very heavy rain tracked across the lower Ohio Valley during the morning of April 27. As it moved into central Kentucky, it moved into an region where the atmosphere had not been worked over by previous storms.
• Tornadoes and Flash Flood in Georgia, April 27 to 28, 201114 deaths · 143 injured · $181 million · EF4 · 66 eventsA highly diffluent, deep upper trough, centered across Texas, took on a negative tilt and began to rotate northeast during this period.
• Damaging Winds in Kentucky, April 27, 2011$3,000 · 56 kt wind · 4 eventsA line of storms moved through during the morning hours of April 27th.
• Flash Flooding and Flooding in Kentucky, April 27 to 28, 2011$69,000 · 1 in hail · 40 eventsThis event began in the early morning hours of April 27 as a squall line extending from Louisville south into Tennessee. Some of the the line was in bowing segments. The morning event resulted in 4 severe thunderstorm warnings and 2 tornado warnings.
• Hail in Oklahoma, April 27, 20110.88 in hail · 1 eventIsolated thunderstorms affected portions of eastern Oklahoma in the wake of a cold front that pushed through the area. One of the stronger storms produced large hail in Muskogee County.
• Hail in Arkansas, April 27, 20111 in hail · 2 eventsIsolated thunderstorms with large hail affected northwestern Arkansas in the wake of a cold front that pushed through the area.
• Tornado and Hail in Ohio, April 27, 2011$61,000 · EF0 · 9 eventsA line of storms moved through during the morning hours of April 27th.
• Tornadoes and Hail in Virginia, April 27, 2011$88,000 · EF1 · 18 eventsScattered severe thunderstorms well in advance of a cold front produced damaging winds, large hail, and several tornadoes across portions of central Virginia.
• Damaging Winds in Ohio, April 27, 2011$85,000 · 61 kt wind · 13 eventsAn area of low pressure tracked east across the northern Great Lakes during the morning and afternoon hours. The trailing cold front entered northern Ohio late that morning bringing a line of thunderstorms and high winds through the area.
• Hail in Missouri, April 27, 20110.75 in hail · 2 eventsIsolated strong thunderstorms moved over portions of southwestern Missouri during the midday hours.
• Hail and Damaging Wind in North Carolina, April 27, 2011$5,000 · 1 in hail · 6 eventsIsolated to scattered storms developed across central North Carolina in strengthening southerly flow in advance of a strong cold front. A couple of the storms became severe across the Northern Piedmont and produce large hail and damaging winds.
• Tornadoes and Hail in Missouri, April 27, 2011$815,000 · EF0 · 12 eventsA 994 mb surface low pressure center over north central Arkansas moved northeast along a quasi-stationary front into extreme southern Illinois. Lines and clusters of thunderstorms with embedded rotational signatures developed coincident with the surface low.
• Hail and Damaging Winds in North Carolina, April 27 to 28, 2011$2,000 · 1 in hail · 7 eventsWidespread severe weather impacted the area. A strong upper level trough approaching from the west provided strong winds aloft, and a weak upper level low pressure system moved across during the afternoon hours setting off scattered thunderstorms.
• Flash Flooding in Kentucky, April 27, 20113 eventsA 994 mb surface low pressure center over north central Arkansas moved northeast along a quasi-stationary front into extreme southern Illinois. Lines and clusters of thunderstorms developed coincident with the surface low and southeast of the low.
• Damaging Winds in New Jersey, April 27, 20112 injured · 52 kt wind · 2 eventsAn unseasonably warm air mass for late April helped trigger some widely scattered strong to severe thunderstorms in New Jersey during the afternoon of the 27th.
• Flash Flood and Hail in Illinois, April 27, 20111 in hail · 5 eventsA 994 mb surface low pressure center over north central Arkansas moved northeast along a quasi-stationary front into extreme southern Illinois. Lines and clusters of thunderstorms with embedded rotational signatures developed coincident with the surface low.
• Tornadoes and Hail in Virginia, April 27, 2011$65,000 · EF1 · 19 eventsHigh pressure remained over the western Atlantic while a strong cold front slowly tracked through the Midwest. A southerly flow pumped in copious amounts of moisture from the Atlantic and Gulf of Mexico.
• Damaging Winds in Pennsylvania, April 27, 2011$50,000 · 52 kt wind · 4 eventsAn area of low pressure tracked east across the northern Great Lakes during the morning and afternoon hours. The trailing cold front entered northwest Pennsylvania late that afternoon bringing a line of thunderstorms and high winds through the area.
• Flash Flooding and Hail in Pennsylvania, April 27 to 28, 2011$178,000 · 1.25 in hail · 36 eventsA fast-moving upper level impulse and attendant surface low pressure system moved across the Great Lakes Region.
• Tornadoes and Flash Flooding in Virginia, April 27 to 28, 20111 death · 7 injured · $2.3 million · EF2 · 46 eventsWidespread severe weather impacted the area. A strong upper level trough approaching from the west provided strong winds aloft, and a weak upper level low pressure system moved across during the afternoon hours setting off scattered thunderstorms.
• Damaging Winds in New York, April 27, 2011$105,000 · 51 kt wind · 6 eventsShowers and thunderstorms accompanied the passage of a cold front across the region. The thunderstorms winds downed trees and power lines. Several hundred customers were without power. In Dansville, the thunderstorm winds blew off a portion of the roof of Dansville High School.
• Tornado in Indiana, April 27, 2011$21,000 · EF0 · 1 eventAn area of low pressure pushed northeast and into the area during the afternoon of April 27th. An isolated storm moved across Sullivan county producing a brief EF-0 tornado that damaged a home near Sullivan, Indiana.
• Tornadoes and Hail in Virginia, April 27 to 28, 20114 deaths · 50 injured · $3.7 million · EF3 · 11 eventsFavorable atmospheric conditions resulted in a deadly tornado outbreak across southwest Virginia on the 27th. The tornadoes produced from light to heavy damage to many homes and businesses across southeast Virginia.
• Tornadoes in Pennsylvania, April 27 to 28, 2011$111,000 · EF2 · 6 eventsA total of six tornadoes were confirmed over from the early evening on the 27th through the early morning hours of the 28th. This was the most significant tornado outbreak in central Pennsylvania since 2005.
• Tornado and Hail in West Virginia, April 27 to 28, 2011$794,000 · EF1 · 20 eventsWest Virginia was on the northern fringe of the large severe weather outbreak that occurred across the southern states, northeast into Virginia. A strengthening low pressure center tracked from Arkansas to Ohio. A strong wind flow exists aloft.
• Tornadoes in Maryland, April 27, 2011$205,000 · EF0 · 3 eventsHigh pressure remained over the western Atlantic while a strong cold front slowly tracked through the Midwest. A southerly flow pumped in copious amounts of moisture from the Atlantic and Gulf of Mexico.
• Tornado in Alabama, April 27, 2011$8.6 million · EF3 · 1 eventOn the afternoon and evening of 27 April 2011, a historic outbreak of large, very damaging tornadoes occurred over the southern United States.
• Tornadoes and Hail in North Carolina, April 27 to 28, 20111 injured · $1.0 million · EF1 · 17 eventsAn historic tornado outbreak affected areas from the Deep South to the Mid-Atlantic states April 27-28. A strong tornado touched down in Rabun County late on the 27th, with additional tornadoes affecting the North Carolina foothills during the early morning hours of the 28th.
• Tornadoes and Hail in Georgia, April 27, 20111 death · $5.0 million · EF3 · 4 eventsAn historic tornado outbreak affected areas from the Deep South to the Mid-Atlantic states April 27-28. A strong tornado touched down in Rabun County late on the 27th, with additional tornadoes affecting the North Carolina foothills during the early morning hours of the 28th.
• Flash Flood in Kentucky, April 27 to 28, 2011$10,000 · 1 eventAn area of heavy rain moved across the area late on the 27th. Flash flooding occurred as a result of this rain.
• Flash Flood in Ohio, April 27 to 28, 2011$2,000 · 1 eventAn area of heavy rain moved across the area late on the 27th. Flash flooding occurred as a result of this rain.
• Damaging Winds in West Virginia, April 27 to 28, 2011$10,000 · 61 kt wind · 5 eventsA strong cold front slowly passed through the region during the late evening hours of the 27th into the morning of the 28th. A southerly flow ahead of the front caused deep moisture over the area.
• Tornadoes and Damaging Winds in Maryland, April 28, 2011$79,000 · EF1 · 16 eventsA strong cold front slowly passed through the region during the morning and early afternoon hours of the 28th. A southerly flow ahead of the front caused deep moisture over the area. The deep moisture combined with a mid-level trough to produce moderate amounts of instability.
• Flash Flooding and Flooding in Virginia, April 28, 201110 eventsA strong cold front slowly passed through the region during the morning of the 28th A southerly flow ahead of the front caused deep moisture over the area. The cold front combined with the instability to trigger showers and thunderstorms with very heavy rainfall rates.
• Flash Flooding in West Virginia, April 28, 2011$5,000 · 6 eventsA strong cold front slowly passed through the region during the morning of the 28th A southerly flow ahead of the front caused deep moisture over the area. The cold front combined with the instability to trigger showers and thunderstorms with very heavy rainfall rates.
• Tornadoes and Damaging Winds in Virginia, April 28, 2011$703,000 · EF2 · 17 eventsA strong cold front slowly passed through the region during the morning and early afternoon hours of the 28th. A southerly flow ahead of the front caused deep moisture over the area. The deep moisture combined with a mid-level trough to produce moderate amounts of instability.
• Damaging Wind in Alabama, April 28, 2011$5,000 · 50 kt wind · 1 eventOn April 27th, a historic tornado outbreak occurred across portions of central and northern Alabama. Meanwhile, southeastern Alabama was mostly unscathed with the exception of some trees being blown down across Coffee county in association with straight line winds.
• Damaging Winds and High Wind in Ohio, April 28, 2011$5,000 · 56 kt wind · 8 eventsA line of convective showers moved through during the early morning hours producing wind gusts and damage. In addition, some synoptic strong and high winds occurred during this time period.
• Hail in South Carolina, April 28, 20110.75 in hail · 1 eventA thunderstorm produced one report of dime size hail over the Upstate.
• Flash Flooding and Flood in New York, April 28 to 29, 2011$1.8 million · 3 eventsRainfall of one to 1.5 inches fell across the northern Adirondacks late on April 27 into the early morning hours of April 28.
• Flash Flooding and Flooding in Maryland, April 28, 20119 eventsA strong cold front slowly passed through the region during the morning of the 28th A southerly flow ahead of the front caused deep moisture over the area. The cold front combined with the instability to trigger showers and thunderstorms with very heavy rainfall rates.
• Damaging Winds and Strong Wind in North Carolina, April 28, 20112 injured · $144,000 · 52 kt wind · 45 eventsA strong cold front and deep upper level trough produced periods of wind damage across central North Carolina. Some of the wind damage on the morning of April 28th, 2011 occurred with non-thunderstorm winds due to rapid pressure falls/rises associated with a gravity wave.
• Tornado and Flash Flooding in Pennsylvania, April 28, 2011$651,000 · EF0 · 14 eventsA significant severe weather and flash flood outbreak developed across northeast Pennsylvania as a storm system moved east from the Great Lakes. Thunderstorms with damaging winds and very heavy rain developed and moved across the area during the overnight hours on the 28th.
• Tornado and Flash Flooding in New York, April 28, 2011EF1 · 12 eventsAn anomalously warm and humid air mass was over eastern New York April 27th and 28th. Temperatures were 15 to 25 degrees above normal. A warm front lifted north of the region on Wednesday, April 27th with an area of heavy showers and embedded thunderstorms.
• Tornado and Hail in Florida, April 28, 2011$514,000 · EF1 · 10 eventsOn April 27th, a historic tornado outbreak occurred across portions of central and northern Alabama and extended into central and northern Georgia. The remnants of this systems moved across the Florida Panhandle and Big Bend on April 28th in a weakened state.
• Hail and Damaging Winds in Georgia, April 28, 2011$131,000 · 1.75 in hail · 6 eventsA line of thunderstorms developed ahead of a cold front and moved through the area producing some large hail and wind damage. Most of the damage was due to trees falling, some on homes or vehicles.
• Tornadoes and Hail in South Carolina, April 28, 2011$677,000 · EF1 · 18 eventsA line of thunderstorms developed ahead of a cold front and moved through the area producing some large hail and wind damage. Most of the damage was due to trees falling, some on homes or vehicles. Three small tornadoes also touched down in the Midlands.
• Hail and Damaging Winds in South Carolina, April 28, 2011$75,000 · 56 kt wind · 13 eventsA deep cutoff area of low pressure was located over the Great Lakes with a surface cold front trailing to the south. A humid air mass was in place at the surface with dewpoints in the upper 60s to lower 70s contributing to very low LCLs, as low as 1000 ft.
• Flash Flood in Pennsylvania, April 28, 20111 eventThe combination of a series of thunderstorms and moist antecedent conditions caused poor drainage and flash flooding in the Poconos, primarily in Carbon County. Event precipitation totals averaged 1.5 to 2.0 inches, most of which fell during the first half of the day on the 28th.
• Hail and Damaging Wind in Georgia, April 28, 2011$20,000 · 1 in hail · 2 eventsOn April 27th, a historic tornado outbreak occurred across portions of central and northern Alabama and extended into central and northern Georgia.
• Damaging Winds in Pennsylvania, April 28, 2011$11,000 · 52 kt wind · 7 eventsAn approaching cold front helped trigger a couple of bands of strong to severe thunderstorms during the morning of the 28th in Eastern Pennsylvania.
• Tornado and Damaging Winds in Virginia, April 28, 2011$42,000 · EF1 · 12 eventsScattered severe thunderstorms in advance of a cold front produced damaging winds and one tornado across portions of central and eastern Virginia.
• Damaging Winds in New Jersey, April 28, 201152 kt wind · 7 eventsAn approaching cold front helped trigger a couple of bands of strong to severe thunderstorms around midday on the 28th mainly in central and northern New Jersey.
• Damaging Wind in New York, April 28, 2011$3,000 · 52 kt wind · 1 eventA cold front crossing the Tri-State area triggered an isolated severe thunderstorm in Orange County.
• Flash Flood in New Jersey, April 28, 20111 eventThunderstorms associated with a strong cold front produced torrential downpours and caused flash flooding in Bergen County.
• Flash Flood in New York, April 28, 20111 eventThunderstorms associated with a strong cold front produced torrential downpours and caused flash flooding in Rockland County.
• Hail and Damaging Wind in Florida, April 28, 201150 kt wind · 3 eventsA scattered to broken line of pre-frontal thunderstorms moved across the area during the day and evening. Training strong to severe storms first affected southeast Georgia by mid-morning...then storms progressed across northeast Florida due the afternoon and evening.
• Tornadoes and Hail in North Carolina, April 28, 2011$275,000 · EF1 · 15 eventsA deep cutoff area of low pressure was located over the Great Lakes with a surface cold front trailing to the south. A humid air mass was in place at the surface with dewpoints in the upper 60s to lower 70s contributing to very low LCLs, as low as 1000 ft.
• Tornadoes and Hail in North Carolina, April 28, 2011$10,000 · EF1 · 11 eventsA strong cold front approached eastern North Carolina during the afternoon and evening of April 28th. Scattered thunderstorms developed in the warm and unstable air ahead of the front during the afternoon.
• Tornado and Hail in Georgia, April 28, 2011EF0 · 4 eventsA scattered to broken line of pre-frontal thunderstorms moved across the area during the day and evening. Training strong to severe storms first affected southeast Georgia by mid-morning...then storms progressed across northeast Florida due the afternoon and evening.
• Hail and Damaging Winds in Indiana, April 28, 2011$63,000 · 61 kt wind · 6 eventsScattered showers and islolated thunderstorms developed across central Indiana and formed into a couple of bands as an area of low pressure moved eastward across northern Indiana. A few thunderstorm wind damage reports came in from southeast portions of central Indiana.
• Damaging Winds in North Carolina, April 28, 2011$5,000 · 50 kt wind · 3 eventsScattered severe thunderstorms in advance of a cold front produced damaging winds across portions of northeast North Carolina.
• Damaging Wind in Kentucky, April 28, 2011$5,000 · 50 kt wind · 1 eventA line of convective showers moved through during the early evening hours producing wind gusts and damage.
• Hail and Damaging Winds in Florida, April 28, 2011$10,000 · 2.5 in hail · 7 eventsThe east coast sea breeze forced an isolated severe thunderstorm, which produced hail up to golf ball size in Titusville and winds over 60 mph at the Kennedy Space Center.
• Hail in Florida, April 28, 20111.75 in hail · 1 eventMoist and unstable air over South Florida ahead of a cold front over the Southeast U.S. provided ingredients for strong to severe thunderstorms in the Lake Okeechobee area.
• Damaging Wind in Ohio, April 28, 201153 kt wind · 1 eventA line of convective showers moved through during the early evening hours producing wind gusts and damage.
• Hail in Kentucky, April 28, 20111 in hail · 3 eventsStrong daytime heating occurred where a pocket of cold mid-level temperatures existed. Steep low and mid-level lapse rates and strong winds aloft supported isolated large hail events in northwest Kentucky.
• Hail and Heavy Rain in Florida, April 29, 20111 in hail · 6 eventsMoist and unstable westerly flow over South Florida ahead of an approaching cold front led to strong thunderstorms with hail and heavy rainfall.

Every billion-dollar disasterEvery storm of 2011Tornadoes in 2011

NOAA NCEI, U.S. Billion-Dollar Weather and Climate Disasters (2025), https://doi.org/10.25921/stkw-7w73, and the Storm Events Database for the episodes.