Alert archive / Ohio / Flash Flood Warnings in 2026

Flash Flood Warning 51, NWS Wilmington, OH

August 11, 20264 counties in Ohio

NWS Wilmington, OH issued this flash flood warning at Aug 11, 2026, 5:29 AM EDT for 4 counties in Ohio. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 11, 2026, 5:29 AM EDT (09:29 UTC)
Expired: Aug 11, 2026, 8:30 AM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Fairfield County, OH, Franklin County, OH, Hocking County, OH, Licking County, OH

The radar

The Cincinnati radar (KILN), 110 km from the middle of the area, began a volume at 09:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 9.5 hours before the alert went out and 108 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 4475 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 4.1
Supercell composite: 24.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 3:29 AM EDT, 2 hours earlier.

Area forecast discussion, Aug 11, 3:29 AM EDT, 2 hours before

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Hazardous weather outlook, Aug 11, 5:14 AM EDT, 15 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
514 AM EDT Tue Aug 11 2026

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-120915-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-Ohio-Switzerland-
Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-Pendleton-Bracken-
Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-Shelby-Logan-
Delaware-Miami-Champaign-Clark-Madison-Licking-Preble-Montgomery-
Greene-Pickaway-Fairfield-Butler-Warren-Clinton-Ross-Hocking-
Hamilton-Clermont-Brown-Highland-Adams-Pike-Scioto-
514 AM EDT Tue Aug 11 2026

...FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING...

This Hazardous Weather Outlook is for east central Indiana,
southeast Indiana, northeast Kentucky, northern Kentucky, central
Ohio, south central Ohio, southwest Ohio and west central Ohio.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

Several rounds of thunderstorms are expected today. Damaging winds,
potentially significant, may result in widespread damage and power
outages. Isolated tornadoes cannot be ruled out.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

In the hours before

Special weather statement, Aug 10, 11:48 PM EDT, 5 hours 41 minutes before

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Local storm report, Aug 10, 11:54 PM EDT, 5 hours 35 minutes before

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Local storm report, Aug 10, 11:55 PM EDT, 5 hours 34 minutes before

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Special weather statement, Aug 11, 12:35 AM EDT, 4 hours 54 minutes before

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Local storm report, Aug 11, 2:04 AM EDT, 3 hours 25 minutes before

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Special weather statement, Aug 11, 3:33 AM EDT, 1 hour 56 minutes before

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The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 9:29 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer	46 min
Aug 10, 9:49 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer, Shelby	41 min
Aug 10, 9:50 PM EDT	Special Weather Statement	ILN	Logan, Union	25 min
Aug 10, 10:04 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Hardin, Logan, Union	41 min
Aug 10, 10:15 PM EDT	Areal Flood Advisory	ILN	Auglaize, Hardin, Logan, Shelby, Union	15 min
Aug 10, 10:21 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer	39 min
Aug 10, 10:30 PM EDT	Flash Flood Warning	ILN	Auglaize, Hardin, Logan, Shelby, Union	3 hr
Aug 10, 10:39 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Mercer, Shelby	36 min
Aug 10, 10:45 PM EDT	Areal Flood Advisory	ILN	Auglaize, Mercer	3 hr
Aug 10, 10:57 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Logan, Miami, Shelby	18 min
Aug 10, 11:11 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Franklin, Licking	49 min
Aug 10, 11:18 PM EDT	Special Weather Statement	ILN	Delaware, Franklin, Union	27 min
Aug 10, 11:19 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Hocking	26 min
Aug 10, 11:21 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Franklin, Licking, Madison, Union	39 min
Aug 10, 11:47 PM EDT	Special Weather Statement	ILN	Licking	43 min
Aug 10, 11:48 PM EDT	Special Weather Statement	ILN	Licking	42 min
Aug 11, 12:35 AM EDT	Special Weather Statement	ILN	Hocking	25 min
Aug 11, 12:49 AM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Highland, Ross	28 min
Aug 11, 1:27 AM EDT	Areal Flood Warning	ILN	Hardin, Logan, Union	4 hr
Aug 11, 3:33 AM EDT	Special Weather Statement	ILN	Pickaway	42 min
Aug 11, 4:17 AM EDT	Areal Flood Advisory	ILN	Fairfield, Hocking, Pickaway	3 hr
Aug 11, 5:17 AM EDT	Areal Flood Advisory	ILN	Fairfield, Franklin, Licking	117 min
Aug 11, 7:57 AM EDT	Severe Thunderstorm Warning	ILN	Darke, Mercer	63 min
Aug 11, 8:09 AM EDT	Severe Thunderstorm Warning	ILN	Darke, Mercer	51 min
Aug 11, 8:22 AM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Miami, Shelby	53 min
Aug 11, 8:31 AM EDT	Severe Thunderstorm Warning	ILN	Darke, Miami, Montgomery, Preble	59 min
Aug 11, 8:34 AM EDT	Special Weather Statement	ILN	Hardin, Logan, Union	26 min
Aug 11, 8:50 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Greene, Logan	40 min
Aug 11, 9:16 AM EDT	Areal Flood Advisory	ILN	Champaign, Delaware, Logan, Union	3 hr
Aug 11, 9:22 AM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Madison, Union	53 min
Aug 11, 9:28 AM EDT	Special Weather Statement	ILN	Butler, Greene, Montgomery, Preble, Warren	47 min
Aug 11, 9:35 AM EDT	Tornado Warning	ILN	Champaign, Clark, Madison	25 min
Aug 11, 9:47 AM EDT	Severe Thunderstorm Warning	ILN	Delaware, Franklin, Pickaway	43 min
Aug 11, 10:03 AM EDT	Special Weather Statement	ILN	Brown, Clermont, Clinton, Fayette, Hamilton, Highland and 1 more	42 min
Aug 11, 10:11 AM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Hocking, Licking	64 min
Aug 11, 10:20 AM EDT	Special Weather Statement	ILN	Hocking, Pike, Ross	55 min
Aug 11, 10:38 AM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Hocking, Pickaway, Ross	40 min
Aug 11, 10:46 AM EDT	Special Weather Statement	ILN	Adams, Brown, Clermont, Highland, Scioto	29 min
Aug 11, 10:50 AM EDT	Areal Flood Advisory	ILN	Fairfield, Franklin, Hocking, Licking, Pickaway, Ross	3 hr
Aug 11, 11:24 AM EDT	Special Weather Statement	ILN	Scioto	51 min
Aug 11, 12:32 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Darke, Mercer, Miami, Preble, Shelby	43 min
Aug 11, 12:35 PM EDT	River Flood Warning	ILN	Hocking	25 hr
Aug 11, 1:08 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Darke, Miami, Montgomery, Preble and 1 more	37 min
Aug 11, 1:38 PM EDT	Special Weather Statement	ILN	Miami, Montgomery, Preble	37 min
Aug 11, 1:56 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Greene, Miami, Montgomery	34 min
Aug 11, 2:25 PM EDT	Severe Thunderstorm Warning	ILN	Clark, Greene, Montgomery	50 min
Aug 11, 2:28 PM EDT	Areal Flood Advisory	ILN	Champaign, Clark, Darke, Franklin, Greene, Madison and 3 more	3 hr
Aug 11, 2:29 PM EDT	Tornado Warning	ILN	Clark, Fayette, Greene, Madison	31 min
Aug 11, 2:30 PM EDT	Areal Flood Advisory	ILN	Preble	3 hr
Aug 11, 2:34 PM EDT	Severe Thunderstorm Warning	ILN	Preble	41 min
Aug 11, 2:42 PM EDT	Severe Thunderstorm Warning	ILN	Clark, Clinton, Fayette, Franklin, Greene, Madison and 1 more	48 min
Aug 11, 2:56 PM EDT	Severe Thunderstorm Warning Considerable damage threat	ILN	Butler, Hamilton, Preble	49 min
Aug 11, 3:00 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Montgomery, Preble, Warren	45 min
Aug 11, 3:01 PM EDT	Areal Flood Advisory	ILN	Fairfield, Fayette, Franklin, Greene, Hocking, Licking and 3 more	3 hr
Aug 11, 3:05 PM EDT	Special Weather Statement	ILN	Fairfield, Franklin, Hocking, Pickaway	55 min
Aug 11, 3:06 PM EDT	Tornado Warning	ILN	Hamilton	24 min
Aug 11, 3:13 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Greene, Montgomery, Preble, Warren	47 min
Aug 11, 3:13 PM EDT	Tornado Warning	ILN	Butler, Hamilton	32 min
Aug 11, 3:23 PM EDT	Areal Flood Advisory	ILN	Butler, Clinton, Fayette, Greene, Hamilton, Warren	3 hr
Aug 11, 3:23 PM EDT	Severe Thunderstorm Warning Considerable damage threat	ILN	Brown, Butler, Clermont, Hamilton, Warren	52 min
Aug 11, 3:31 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont, Clinton, Fayette, Highland, Warren	44 min
Aug 11, 3:31 PM EDT	Tornado Warning	ILN	Clermont, Hamilton	29 min
Aug 11, 3:42 PM EDT	Flash Flood Warning Considerable damage threat	ILN	Fairfield, Franklin, Hocking, Madison, Pickaway	3 hr
Aug 11, 3:47 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont, Hamilton, Highland	43 min
Aug 11, 3:47 PM EDT	Tornado Warning	ILN	Brown, Clermont, Highland	28 min
Aug 11, 3:49 PM EDT	Flash Flood Warning	ILN	Hamilton	3 hr
Aug 11, 3:55 PM EDT	Areal Flood Advisory	ILN	Brown, Clermont, Clinton, Highland, Ross, Warren	3 hr
Aug 11, 3:55 PM EDT	Tornado Warning	ILN	Clermont	35 min
Aug 11, 4:03 PM EDT	Flash Flood Warning	ILN	Brown, Clermont, Clinton, Highland, Warren	3 hr
Aug 11, 4:05 PM EDT	Tornado Warning	ILN	Adams, Brown, Highland	25 min
Aug 11, 4:06 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Brown, Clermont, Highland	54 min
Aug 11, 4:14 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Highland, Pike, Scioto	46 min
Aug 11, 4:19 PM EDT	Areal Flood Advisory	ILN	Brown, Clermont	3 hr
Aug 11, 4:19 PM EDT	Tornado Warning	ILN	Adams, Brown	26 min
Aug 11, 4:28 PM EDT	Tornado Warning	ILN	Adams, Brown, Highland, Pike, Scioto	32 min
Aug 11, 4:32 PM EDT	River Flood Warning	ILN	Fairfield, Licking	13 hr
Aug 11, 4:44 PM EDT	Severe Thunderstorm Warning	ILN	Adams, Pike, Scioto	32 min
Aug 11, 6:09 PM EDT	Special Weather Statement	ILN	Butler	21 min
Aug 11, 6:20 PM EDT	Special Weather Statement	ILN	Butler	10 min
Aug 11, 6:58 PM EDT	Areal Flood Warning	ILN	Fairfield, Hocking	6 hr

Nearby

Flash Flood Warnings in Ohio, 2026 Every flash flood warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.