health · severe

Flood Warning for Clark County — issued Aug 20, 4:11 a.m.

Flooding caused by excessive rainfall is expected.

The National Weather Service issued a Flood Warning covering Clark County on August 20, 2026. NWS

The LanternAssembled from the record Published Sep 3, 2026

NWSFlood Warning for Clark County — issued Aug 20, 4:11 a.m.

Illustration: a swollen creek running over a low country bridge, trees standing in water — Illustration · The Lantern

What the record shows

WHERE...Northwestern Fayette County in central Ohio... Southwestern Madison County in central Ohio... Southeastern Clark County in west central Ohio... Greene County in west central Ohio... WHEN...Until 815 AM EDT. * IMPACTS...Floodi… NWS

1 source

Context

This is one of 45 records of this type (Severe) from this source in the year preceding it. NWS

The Lantern holds 86 records from this source in total, and 1375 for New Carlisle across every source. NWS

1 source

By the numbers

Date of record: August 20, 2026 NWS
Event: Flood Warning NWS
Messagetype: Alert NWS
Severity: Severe NWS
Certainty: Likely NWS
Urgency: Expected NWS
Headline: Flood Warning issued August 20 at 4:11AM EDT until August 20 at 8:15AM EDT by NWS Wilmington OH NWS

1 source

How we know this:

Assembled mechanically from the source filing and The Lantern's own record database — no AI-written prose. Every figure above appears verbatim in the cited record, which is linked on this page. NWS

Sources

1Flood Warning for Clark County — issued Aug 20, 4:11 a.m.NWS Alerts — Clark County, OH · Aug 20, 2026 · the filing on this pageweather.gov

Thursday, August 20, 2026Clark County, OH · New CarlislePublic record · NWS Alerts — Clark County, OH

The source filing

Event	Flood Warning
Message type	Alert
Severity	Severe
Certainty	Likely
Urgency	Expected
Headline	Flood Warning issued August 20 at 4:11AM EDT until August 20 at 8:15AM EDT by NWS Wilmington OH
Area desc	Clark, OH; Fayette, OH; Greene, OH; Madison, OH
Effective	August 20, 2026, 4:11 a.m.
Expires	August 20, 2026, 8:15 a.m.
Sender name	NWS Wilmington OH
Instruction	Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. To report flooding, go to our website at weather.gov/iln and submit your report via social media, when you can do so safely.

View the original at weather.gov

Published by National Weather Service (api.weather.gov). This is the agency's public filing as The Lantern received it, shown with its fields named in plain English.