Alert archive / Oklahoma / Flash Flood Warnings in 2025

Flash Flood Warning 145, NWS Norman, OK

August 11, 2025Caddo County, Oklahoma

NWS Norman, OK issued this flash flood warning at Aug 11, 2025, 8:28 PM CDT for Caddo County, Oklahoma. 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, 2025, 8:28 PM CDT (01:28 UTC)
Expired: Aug 11, 2025, 11:30 PM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

County Caddo County, OK

The radar

The Norman radar (KTLX), 101 km from the middle of the area, began a volume at 01:31 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

Norman, OK (KOUN), launched 00:00Z, 1.5 hours before the alert went out and 89 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: 114 J/kg
Mixed-layer CIN: -180 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Norman, OK wrote its last area forecast discussion before this flash flood warning went out at Aug 11, 6:34 PM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Aug 11, 6:34 PM CDT, 1 hour 54 minutes before

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In the hours before

Local storm report, Aug 11, 5:57 PM CDT, 2 hours 31 minutes before

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Local storm report, Aug 11, 5:59 PM CDT, 2 hours 29 minutes before

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Special weather statement, Aug 11, 6:01 PM CDT, 2 hours 27 minutes before

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Special weather statement, Aug 11, 6:05 PM CDT, 2 hours 23 minutes before

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Special weather statement, Aug 11, 6:21 PM CDT, 2 hours 7 minutes before

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Special weather statement, Aug 11, 6:36 PM CDT, 1 hour 52 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 11, 7:20 PM CDT	Areal Flood Advisory	OUN	Caddo	3 hr
Aug 11, 8:28 PM CDT	Special Weather Statement	OUN	Pontotoc	32 min
Aug 11, 8:32 PM CDT	Special Weather Statement	OUN	Pontotoc	28 min
Aug 11, 9:57 PM CDT	Special Weather Statement	OUN	Bryan	33 min
Aug 11, 10:03 PM CDT	Areal Flood Advisory	OUN	Bryan	3 hr
Aug 11, 10:24 PM CDT	Flash Flood Warning	OUN	Bryan	3 hr
Aug 11, 10:29 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	46 min
Aug 12, 3:15 AM CDT	Flash Flood Warning	OUN	Cotton	3 hr
Aug 12, 6:12 PM CDT	Special Weather Statement	OUN	Dewey	33 min
Aug 12, 6:14 PM CDT	Special Weather Statement	OUN	Kingfisher	31 min
Aug 12, 6:58 PM CDT	Special Weather Statement	OUN	Custer	32 min
Aug 11, 7:00 PM CDT	Special Weather Statement	OUN	Archer	30 min
Aug 11, 7:09 PM CDT	Special Weather Statement	OUN	Baylor	36 min
Aug 11, 7:44 PM CDT	Special Weather Statement	OUN	Baylor	31 min
Aug 11, 8:23 PM CDT	Areal Flood Advisory	OUN	Baylor	3 hr
Aug 11, 8:41 PM CDT	Special Weather Statement	OUN	Knox	34 min
Aug 11, 9:47 PM CDT	Special Weather Statement	OUN	Hardeman	28 min
Aug 11, 10:54 PM CDT	Special Weather Statement	OUN	Wilbarger	36 min
Aug 11, 11:55 PM CDT	Special Weather Statement	OUN	Foard	35 min
Aug 12, 1:59 AM CDT	Areal Flood Advisory	OUN	Archer, Clay, Wichita	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2025 Every flash flood warning in 2025

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.