Flood in Ohio

Events

3,509

Deaths

31

Injuries

9

Damage

$426 million

• Tornadoes and Flash Flood in Ohio, May 27 to 28, 20192 deaths · 176 injured · $582 million · EF4 · 39 eventsThunderstorms developed during the evening hours along a warm front lifting slowly north across the region. Many of the thunderstorms produced tornadoes, including a few strong to violent tornadoes.
• Tornadoes and Flood in Ohio, March 14, 20243 deaths · 29 injured · $10 million · EF3 · 34 eventsThunderstorms developed in an unseasonably warm and humid airmass ahead of an approaching cold front.
• Flash Flooding and Flood in Ohio, July 21 to 24, 20034 deaths · $199 million · 9 eventsThunderstorms dumped two to four inches of rain on portions of Trumbull County during the afternoon hours. The most severe flooding occurred in Warren, Howland, Braceville and Brookfield Townships with many evacuations reported.
• Flash Flooding and Flooding in Ohio, July 18 to 19, 20153 deaths · 3 injured · $3.0 million · 7 eventsShowers and thunderstorms developed during the evening hours across the Ohio Valley in association with an upper level disturbance that was moving through the region. The thunderstorms continued into the early morning hours of July 19th before tapering off.
• Flash Flooding and Flooding in Ohio, June 27 to 30, 19982 deaths · $21 million · 1 in hail · 22 eventsThe second night of thunderstorms hit during Saturday night the 27th, into Sunday morning, the 28th. Portions of Athens, Washington, and Meigs Counties were hit hard by flooding from this round. The third night of thunderstorms was on Sunday the 28th into Monday the 29th.
• Flash Flooding and Flooding in Ohio, February 28, 20112 deaths · $14 million · 28 eventsA strong area of low pressure moved northeast across Ohio on February 28th. Heavy rain fell over northern Ohio in association with this low. Rainfall totals of between one and three inches were reported. Up to ten inches of heavy snow was one the ground at daybreak on the 27th.
• Flooding in Ohio, May 2 to 3, 20102 deaths · $2.5 million · 8 eventsA strong southerly flow, ahead of a cold front, transported very moist air through Tennessee, Kentucky and into southeast Ohio. Surface dew points were in the mid and upper 60s.
• Tornadoes and Flash Flooding in Ohio, July 10 to 12, 20131 death · $34 million · EF0 · 95 eventsA hot and humid airmass over the Ohio Valley was broken up on the 10th by a shortwave trough and a surface cold front that came moved through during the afternoon hours.
• Flash Flood and Flooding in Ohio, July 4 to 5, 20032 deaths · $131,000 · 55 kt wind · 29 eventsPower poles were knocked down.
• Flash Flooding and Flooding in Ohio, June 21 to 23, 20061 death · $199 million · 24 eventsThunderstorms dumped two to three inches of rain on eastern Crawford County during the morning of June 21st. Severe flooding occurred in the New Washington and Crestline areas. Several roads including State Routes 602, 598 and 96 were flooded by as much as three feet of water.
• Flash Flooding and Flood in Ohio, July 27 to 31, 20061 death · $361 million · 8 eventsHeavy thunderstorm rains fell on Lake County during the afternoon and evening hours of July 27th. Rainfall rates at times were in excess of three inches per hour. Rainfall totals through 10 p.m. ranged from 4 to 7 inches over much of the county.
• Tornadoes and Flash Flood in Ohio, April 2 to 6, 20241 death · 1 injured · $512,000 · EF2 · 40 eventsMultiple rounds of showers and thunderstorms moved across parts of Ohio at the start of the month of April.
• Flash Flood and Flood in Ohio, March 20, 20202 deaths · $150,000 · 50 kt wind · 4 eventsA deepening low pressure system crossed the Great Lake region on March 20th and promoted heavy rainfall and isolated thunderstorms. Localized flooding had been anticipated for parts of Ohio since 2 inches of rain already fell 48 hours prior.
• Tornadoes and Flooding in Ohio, November 10, 20022 injured · $774,000 · F3 · 49 eventsNumerous trees were downed between Greenville and Ansonia.
• Flood and Damaging Winds in Ohio, August 30, 20192 deaths · 1 injured · $30,000 · 50 kt wind · 10 eventsStrong to severe thunderstorms developed ahead of an upper level disturbance and a surface cold front.
• Flood in Ohio, February 20 to 22, 20002 deaths · 2 injured · $20,000 · 1 eventHeavy rainfall caused the Ohio River at Portsmouth to overflow its banks. The river crested at 52 feet at 730 am on the 21st. Flood stage is 50 feet. Low land flooding occurred along the river in South Portsmouth.
• Tornadoes and Flash Flooding in Ohio, November 5 to 6, 20178 injured · $16 million · EF2 · 29 eventsThunderstorms overspread the region during the afternoon and evening hours as a slow moving cold front pushed through the Ohio Valley. The storms produced damaging winds, heavy rainfall and isolated tornadoes.
• Tornadoes and Flash Flooding in Ohio, May 25 to 27, 2011$90 million · EF1 · 115 eventsBetween May 25th and May 26th heavy rainfall occurred as a warm front lifted north across the area. A strong southerly flow, ahead of a cold front, transported very moist air through Tennessee, Kentucky and into Ohio on the 25th. Surface dew points were in the 60s.
• Flooding in Ohio, March 4, 20152 deaths · $10,000 · 2 eventsWidespread rain developed ahead of a low pressure system pushing east along a slow moving cold front. The rain fell on snow covered ground, resulting in areas of flooding.
• Flood in Ohio, June 9, 20102 deaths · $3,000 · 1 eventHeavy rain allowed for some creeks to rise out of their banks.
• Tornadoes and Flooding in Ohio, March 3, 20231 death · $1.7 million · EF1 · 22 eventsShowers and scattered thunderstorms developed during the afternoon hours ahead of a strong low pressure system moving through the Ohio Valley.
• Flood in Ohio, September 17 to 20, 20041 death · $13 million · 1 eventAt 11 AM EDT on 17th, CR 4 flooded near Neffs. By noon, roads were flooded in Bridgeport and St Clairsville. As of 9 AM on 18th, a few roads were still flooded but water was receding. A total of 521 structures damaged or destroyed. State Rte 7 was closed by multiple mud slides.
• Tornadoes and Flash Flooding in Ohio, May 14 to 31, 19971 death · $601,000 · F1 · 41 eventsA mini supercell spawned a tornado along a warm frontal boundary. Roofs were blown off a grain bin, hog harrowing house, and several farm buildings.
• Flooding in Ohio, January 5 to 10, 20051 death · $9.0 million · 8 eventsSeparate waves of rain moved along a strong west to east frontal zone in the Ohio Valley, from late on the 3rd into the early morning hours of the 8th. To the south of the boundary, dew points were in the 50 to 55 degree range.
• Flash Flooding and Flooding in Ohio, May 10 to 12, 20111 death · $385,000 · 1.75 in hail · 60 eventsA very unstable airmass was in place south of a warm front in the area. This unstable airmass led to the development of widespread severe weather.

Flood everywhereEvery kind of event in Ohio

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.