Alert archive / Oklahoma / Flash Flood Warnings in 2025

Flash Flood Warning 74, NWS Norman, OK

May 19, 20254 counties in Oklahoma

NWS Norman, OK issued this flash flood warning at May 19, 2025, 7:41 PM CDT for 4 counties in 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: May 19, 2025, 7:41 PM CDT (00:41 UTC)
Expired: May 19, 2025, 10:45 PM CDT
In force: 3 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Atoka County, OK, Bryan County, OK, Coal County, OK, Johnston County, OK

The radar

The Norman radar (KTLX), 144 km from the middle of the area, began a volume at 00:42 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, 0.7 hours before the alert went out and 142 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: 2343 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 8.8

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 May 19, 6:39 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, May 19, 6:39 PM CDT, 1 hour 2 minutes before

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In the hours before

Local storm report, May 19, 5:55 PM CDT, 1 hour 46 minutes before

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Local storm report, May 19, 5:59 PM CDT, 1 hour 42 minutes before

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Local storm report, May 19, 6:08 PM CDT, 1 hour 33 minutes before

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Local storm report, May 19, 6:10 PM CDT, 1 hour 31 minutes before

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Special weather statement, May 19, 6:30 PM CDT, 1 hour 11 minutes before

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Local storm report, May 19, 6:40 PM CDT, 1 hour 1 minute 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
May 19, 7:02 PM CDT	Special Weather Statement	OUN	Atoka, Coal	28 min
May 19, 7:05 PM CDT	Areal Flood Warning	OUN	Jefferson	115 min
May 19, 7:28 PM CDT	Special Weather Statement	OUN	Atoka, Bryan, Coal, Johnston, Love, Marshall	32 min
May 19, 7:34 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Coal, Johnston	3 hr
May 19, 7:42 PM CDT	Special Weather Statement	OUN	Harper, Major, Woods, Woodward	33 min
May 19, 7:43 PM CDT	Areal Flood Warning	OUN	Carter, Coal, Johnston, Love, Marshall, Murray	3 hr
May 19, 7:52 PM CDT	Areal Flood Warning	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc	3 hr
May 19, 8:01 PM CDT	Special Weather Statement	OUN	Bryan, Marshall	29 min
May 19, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	50 min
May 19, 9:22 PM CDT	Special Weather Statement	OUN	Bryan	38 min
May 19, 10:04 PM CDT	Special Weather Statement	OUN	Bryan	26 min
May 19, 10:53 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Carter, Coal, Hughes, Johnston and 4 more	4 hr
May 19, 11:17 PM CDT	Special Weather Statement	OUN	Hughes	43 min
May 19, 11:19 PM CDT	Special Weather Statement	OUN	Johnston, Marshall	41 min
May 19, 11:40 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston, Marshall	50 min
May 20, 12:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Atoka, Bryan	50 min
May 20, 12:32 AM CDT	Special Weather Statement	OUN	Bryan	28 min
May 20, 12:33 AM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Marshall	3 hr
May 20, 7:17 AM CDT	River Flood Advisory	OUN	Atoka	100 min
May 20, 9:06 AM CDT	River Flood Warning	OUN	Atoka	29 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.