Alert archive / Ohio / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 277, NWS Wilmington, OH

September 20, 2026Adams County, Scioto County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Sep 20, 2026, 4:07 PM EDT for Adams County, Scioto County, Ohio. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 20, 2026, 4:07 PM EDT (20:07 UTC)
Expired: Sep 20, 2026, 4:30 PM EDT
In force: 23 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Adams County, OH, Scioto County, OH

The radar

The Cincinnati radar (KILN), 83 km from the middle of the area, began a volume at 20:11 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 12:00Z, 8.1 hours before the alert went out and 83 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: 1506 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 973 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 303 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 5.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Sep 20, 2:41 PM EDT, 1 hour 26 minutes earlier.

Area forecast discussion, Sep 20, 2:41 PM EDT, 1 hour 26 minutes before

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Hazardous weather outlook, Sep 20, 3:01 PM EDT, 1 hour 6 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
301 PM EDT Sun Sep 20 2026

INZ050-058-059-066-073-074-OHZ026-034-035-042>046-051>056-060>065-
070>074-077>082-088-211915-
Wayne-Fayette-Union-Franklin-Ripley-Dearborn-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-
301 PM EDT Sun Sep 20 2026

...FLOOD WATCH IN EFFECT FROM 7 PM EDT THIS EVENING THROUGH MONDAY
MORNING...

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

.DAY ONE...This afternoon 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.

In addition, a few strong to severe storms will be possible this
afternoon into this evening. Damaging wind gusts will be the primary
threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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 is not expected at this time.

INZ075-080-KYZ089>100-211915-
Ohio-Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-
Pendleton-Bracken-Robertson-Mason-Lewis-
301 PM EDT Sun Sep 20 2026

This Hazardous Weather Outlook is for southeast Indiana, northeast
Kentucky and northern Kentucky.

.DAY ONE...This afternoon and tonight.

Occasional showers and thunderstorms can be expected this afternoon into
tonight. Some of the storms will be capable of producing heavy rainfall
and localized flooding.

In addition, a few strong to severe storms will be possible this
afternoon into this evening. Damaging wind gusts will be the primary
threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Sep 20, 2:09 PM EDT, 1 hour 58 minutes before

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Local storm report, Sep 20, 2:23 PM EDT, 1 hour 44 minutes before

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Local storm report, Sep 20, 2:32 PM EDT, 1 hour 35 minutes before

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Local storm report, Sep 20, 3:07 PM EDT, 1 hour before

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Local storm report, Sep 20, 3:26 PM EDT, 41 minutes before

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Special weather statement, Sep 20, 3:58 PM EDT, 9 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
Sep 19, 10:29 PM EDT	Flood Watch	ILN	Clinton, Fairfield, Fayette, Highland, Hocking, Pickaway and 3 more	7 hr
Sep 19, 11:04 PM EDT	Areal Flood Advisory	ILN	Fairfield, Hocking, Pickaway, Ross	3 hr
Sep 19, 11:57 PM EDT	Flash Flood Warning Considerable damage threat	ILN	Hocking, Pickaway, Ross	9 hr
Sep 20, 12:27 AM EDT	Special Weather Statement	ILN	Warren	33 min
Sep 20, 12:59 AM EDT	Special Weather Statement	ILN	Clinton, Warren	31 min
Sep 20, 1:05 AM EDT	Areal Flood Advisory	ILN	Brown, Butler, Clinton, Highland, Warren	3 hr
Sep 20, 1:13 AM EDT	Special Weather Statement	ILN	Highland	32 min
Sep 20, 1:35 AM EDT	Severe Thunderstorm Warning	ILN	Adams, Highland, Pike, Scioto	40 min
Sep 20, 1:54 AM EDT	Flash Flood Warning Considerable damage threat	ILN	Clinton, Warren	3 hr
Sep 20, 2:08 AM EDT	Severe Thunderstorm Warning	ILN	Pike, Ross, Scioto	37 min
Sep 20, 2:36 AM EDT	Areal Flood Advisory	ILN	Pike, Ross	7 hr
Sep 20, 2:54 AM EDT	River Flood Warning	ILN	Hocking	7 hr
Sep 20, 3:06 AM EDT	Areal Flood Advisory	ILN	Clermont, Hamilton	6 hr
Sep 20, 3:12 AM EDT	Areal Flood Advisory	ILN	Pickaway, Ross	9 hr
Sep 20, 3:39 AM EDT	Flash Flood Warning Considerable damage threat	ILN	Clermont	3 hr
Sep 20, 3:59 AM EDT	Areal Flood Advisory	ILN	Brown, Clermont, Clinton, Highland	5 hr
Sep 20, 4:45 AM EDT	Areal Flood Warning	ILN	Clermont, Clinton, Hamilton, Warren	4 hr
Sep 20, 6:20 AM EDT	Areal Flood Warning	ILN	Clermont, Hamilton	3 hr
Sep 20, 7:52 AM EDT	River Flood Warning	ILN	Clermont, Hamilton	3 hr
Sep 20, 8:38 AM EDT	Areal Flood Warning	ILN	Fairfield, Hocking, Pickaway, Ross	5 hr
Sep 20, 1:07 PM EDT	Flood Watch	ILN	Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more	23 hr
Sep 20, 3:58 PM EDT	Special Weather Statement	ILN	Adams	47 min
Sep 20, 4:31 PM EDT	Special Weather Statement	ILN	Scioto	44 min
Sep 20, 4:49 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	26 min
Sep 20, 5:15 PM EDT	Special Weather Statement	ILN	Adams	45 min
Sep 20, 6:23 PM EDT	Special Weather Statement	ILN	Darke	37 min
Sep 20, 7:00 PM EDT	Special Weather Statement	ILN	Miami	45 min
Sep 20, 7:08 PM EDT	Severe Thunderstorm Warning	ILN	Butler, Preble	41 min
Sep 20, 7:18 PM EDT	Areal Flood Advisory	ILN	Preble	2 hr
Sep 20, 7:44 PM EDT	Special Weather Statement	ILN	Montgomery, Preble	31 min
Sep 20, 7:45 PM EDT	Special Weather Statement	ILN	Butler	45 min
Sep 20, 7:51 PM EDT	Areal Flood Advisory	ILN	Butler, Darke, Miami, Montgomery, Preble	2 hr
Sep 20, 7:54 PM EDT	Tornado Warning	ILN	Butler, Montgomery, Warren	21 min
Sep 20, 5:59 PM EDT	Special Weather Statement	ILN	Wayne	46 min
Sep 20, 6:11 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Wayne	34 min
Sep 20, 6:41 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Union, Wayne	49 min
Sep 20, 6:44 PM EDT	Areal Flood Advisory	ILN	Fayette, Wayne	3 hr

Nearby

Severe Thunderstorm Warnings in Ohio, 2026 Every severe thunderstorm 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.