Alert archive / Oklahoma / Flash Flood Warnings in 2023

Flash Flood Warning 12, NWS Norman, OK

May 13, 2023Lincoln County, Payne County, Oklahoma

NWS Norman, OK issued this flash flood warning at May 13, 2023, 8:21 PM CDT for Lincoln County, Payne County, Oklahoma. It was in force for 114 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: May 13, 2023, 8:21 PM CDT (01:21 UTC)
Expired: May 13, 2023, 10:15 PM CDT
In force: 114 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Flood severity: None

Counties Lincoln County, OK, Payne County, OK

The radar

The Norman radar (KTLX), 70 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 86 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: 364 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

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 13, 6:22 PM CDT, 1 hour 59 minutes earlier.

Area forecast discussion, May 13, 6:22 PM CDT, 1 hour 59 minutes before

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Hazardous weather outlook, May 13, 2:09 PM CDT, 6 hours 12 minutes before

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In the hours before

Special weather statement, May 13, 6:35 PM CDT, 1 hour 46 minutes before

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Local storm report, May 13, 6:54 PM CDT, 1 hour 27 minutes before

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Local storm report, May 13, 7:00 PM CDT, 1 hour 21 minutes before

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Special weather statement, May 13, 7:00 PM CDT, 1 hour 21 minutes before

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Local storm report, May 13, 7:09 PM CDT, 1 hour 12 minutes before

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Local storm report, May 13, 8:00 PM CDT, 21 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
May 13, 7:00 PM CDT	Special Weather Statement	OUN	Noble	30 min
May 13, 8:49 PM CDT	Areal Flood Advisory	OUN	Kay	3 hr
May 13, 9:02 PM CDT	Special Weather Statement	OUN	Tillman	28 min
May 13, 9:21 PM CDT	Special Weather Statement	OUN	Tillman	39 min
May 13, 9:54 PM CDT	Special Weather Statement	OUN	Tillman	36 min
May 13, 10:44 PM CDT	Special Weather Statement	OUN	Jackson	46 min
May 13, 10:50 PM CDT	Areal Flood Advisory	OUN	Greer, Jackson, Kiowa, Tillman	3 hr
May 13, 11:27 PM CDT	Special Weather Statement	OUN	Kiowa	33 min
May 14, 12:19 AM CDT	Flash Flood Warning	OUN	Jackson, Kiowa	3 hr
May 14, 1:06 AM CDT	Areal Flood Advisory	OUN	Jackson	3 hr
May 14, 4:19 AM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Murray	3 hr
May 14, 7:05 AM CDT	Areal Flood Advisory	OUN	Garfield, Grant	3 hr
May 14, 1:28 PM CDT	Special Weather Statement	OUN	Bryan	47 min
May 14, 1:55 PM CDT	Areal Flood Advisory	OUN	Logan, Oklahoma	3 hr
May 14, 2:18 PM CDT	Special Weather Statement	OUN	Logan	57 min
May 14, 2:34 PM CDT	Severe Thunderstorm Warning	OUN	Logan	56 min
May 14, 3:23 PM CDT	Special Weather Statement	OUN	Payne	37 min
May 14, 3:56 PM CDT	Special Weather Statement	OUN	Payne	34 min
May 14, 3:58 PM CDT	Special Weather Statement	OUN	Kay	47 min
May 14, 4:30 PM CDT	Special Weather Statement	OUN	Payne	30 min
May 14, 4:47 PM CDT	Special Weather Statement	OUN	Kay	28 min
May 14, 4:35 AM CDT	Areal Flood Advisory	OUN	Clay	3 hr

Nearby

Flash Flood Warnings in Oklahoma, 2023 Every flash flood warning in 2023

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.