Alert archive / Oklahoma / Flash Flood Warnings in 1991

Flash Flood Warning 32, NWS Norman, OK

June 22, 1991Cleveland County, Pottawatomie County, Oklahoma

NWS Norman, OK issued this flash flood warning at Jun 22, 1991, 4:24 PM CDT for Cleveland County, Pottawatomie County, Oklahoma. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 22, 1991, 4:24 PM CDT (21:24 UTC)
Expired
Jun 22, 1991, 6:30 PM CDT
In force
2 hr
Issued by
NWS Norman, OK
Area
Whole counties

Counties Cleveland County, OK, Pottawatomie County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.4 hours before the alert went out and 24 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-pSkew-T log-p diagram, Norman, OK at 12:00Z on 1991-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2043 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 1991-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -85 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2043 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
969 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-85 m²/s²
0-3 km storm-relative helicity
-37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jun 22, 12:58 PM CDT, 3 hours 26 minutes before
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Local storm report, Jun 22, 1:00 PM CDT, 3 hours 24 minutes before
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Special weather statement, Jun 22, 1:50 PM CDT, 2 hours 34 minutes before
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Special weather statement, Jun 22, 2:26 PM CDT, 1 hour 58 minutes before
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Special weather statement, Jun 22, 2:48 PM CDT, 1 hour 36 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 9:18 PM CDTSevere Thunderstorm WarningOUNWoods42 min
Jun 21, 9:34 PM CDTSevere Thunderstorm WarningOUNHarper41 min
Jun 21, 9:59 PM CDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward61 min
Jun 21, 10:55 PM CDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward65 min
Jun 21, 11:16 PM CDTSevere Thunderstorm WarningOUNEllis44 min
Jun 21, 11:22 PM CDTSevere Thunderstorm WarningOUNMajor33 min
Jun 22, 12:10 AM CDTSevere Thunderstorm WarningOUNWoodward50 min
Jun 22, 12:52 AM CDTSevere Thunderstorm WarningOUNDewey53 min
Jun 22, 1:35 AM CDTSevere Thunderstorm WarningOUNCuster, Dewey, Ellis, Roger Mills55 min
Jun 22, 2:07 AM CDTSevere Thunderstorm WarningOUNKay28 min
Jun 22, 2:26 AM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills64 min
Jun 22, 3:20 AM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills55 min
Jun 22, 4:28 AM CDTSevere Thunderstorm WarningOUNGrant47 min
Jun 22, 2:26 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills64 min
Jun 22, 2:34 PM CDTSevere Thunderstorm WarningOUNPottawatomie56 min
Jun 22, 3:13 PM CDTSevere Thunderstorm WarningOUNLincoln47 min
Jun 22, 3:26 PM CDTSevere Thunderstorm WarningOUNPottawatomie49 min
Jun 22, 3:55 PM CDTSevere Thunderstorm WarningOUNCleveland65 min
Jun 22, 4:10 PM CDTSevere Thunderstorm WarningOUNPottawatomie65 min
Jun 22, 4:18 PM CDTSevere Thunderstorm WarningOUNMcClain57 min
Jun 22, 4:51 PM CDTSevere Thunderstorm WarningOUNSeminole69 min
Jun 22, 4:58 PM CDTSevere Thunderstorm WarningOUNCleveland62 min
Jun 22, 5:05 PM CDTFlash Flood WarningOUNMcClain115 min
Jun 22, 5:10 PM CDTSevere Thunderstorm WarningOUNBryan65 min
Jun 22, 5:15 PM CDTSevere Thunderstorm WarningOUNPontotoc60 min
Jun 22, 5:22 PM CDTSevere Thunderstorm WarningOUNGrady, McClain68 min
Jun 22, 5:43 PM CDTSevere Thunderstorm WarningOUNGarvin, Murray62 min
Jun 22, 5:59 PM CDTSevere Thunderstorm WarningOUNAtoka61 min
Jun 22, 6:13 PM CDTSevere Thunderstorm WarningOUNPontotoc62 min
Jun 22, 6:45 PM CDTSevere Thunderstorm WarningOUNCoal45 min
Jun 22, 6:57 PM CDTSevere Thunderstorm WarningOUNAtoka, Johnston63 min

Nearby

Flash Flood Warnings in Oklahoma, 1991Every flash flood warning in 1991

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.