Alert archive / Oklahoma / Flash Flood Warnings in 1991

Flash Flood Warning 49, NWS Norman, OK

October 25, 1991Bryan County, Choctaw County, Oklahoma

NWS Norman, OK issued this flash flood warning at Oct 25, 1991, 4:37 AM CDT for Bryan County, Choctaw County, Oklahoma. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Oct 25, 1991, 4:37 AM CDT (09:37 UTC)
Expired
Oct 25, 1991, 6:45 AM CDT
In force
2 hr
Issued by
NWS Norman, OK
Area
Whole counties

Counties Bryan County, OK, Choctaw County, OK

The radar

The Norman radar (KTLX), 195 km from the middle of the area, began a volume at 09:40 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, 9.6 hours before the alert went out and 193 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 00:00Z on 1991-10-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1991-10-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2191 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
253 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 24, 7:58 PM CDTSevere Thunderstorm WarningOUNPontotoc47 min
Oct 24, 8:18 PM CDTSevere Thunderstorm WarningOUNHughes27 min
Oct 24, 8:26 PM CDTSevere Thunderstorm WarningOUNCoal49 min
Oct 24, 9:32 PM CDTSevere Thunderstorm WarningOUNAtoka28 min
Oct 24, 9:42 PM CDTSevere Thunderstorm WarningOUNCoal33 min
Oct 24, 9:55 PM CDTSevere Thunderstorm WarningOUNAtoka50 min
Oct 24, 10:07 PM CDTSevere Thunderstorm WarningOUNJohnston, Marshall53 min
Oct 24, 10:48 PM CDTSevere Thunderstorm WarningOUNAtoka, Pushmataha57 min
Oct 24, 10:58 PM CDTSevere Thunderstorm WarningOUNBryan, Marshall62 min
Oct 24, 11:44 PM CDTSevere Thunderstorm WarningOUNPushmataha61 min
Oct 24, 11:58 PM CDTSevere Thunderstorm WarningOUNBryan47 min
Oct 25, 12:44 AM CDTSevere Thunderstorm WarningOUNPushmataha46 min
Oct 25, 1:29 AM CDTSevere Thunderstorm WarningOUNChoctaw46 min
Oct 25, 2:18 AM CDTSevere Thunderstorm WarningOUNChoctaw42 min
Oct 25, 8:13 AM CDTFlash Flood WarningOUNChoctaw, Pushmataha2 hr
Oct 25, 8:13 AM CDTFlash Flood WarningOUNBryan2 hr
Oct 25, 10:15 AM CDTFlash Flood WarningOUNBryan, Choctaw3 hr
Oct 25, 10:15 AM CDTFlash Flood WarningOUNPushmataha3 hr
Oct 25, 1:15 PM CDTFlash Flood WarningOUNBryan3 hr
Oct 25, 6:38 PM CDTSevere Thunderstorm WarningOUNGarvin52 min
Oct 25, 6:38 PM CDTSevere Thunderstorm WarningOUNCarter38 min
Oct 25, 6:54 PM CDTSevere Thunderstorm WarningOUNTillman45 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; radar from the NEXRAD Level II archive.