Alert archive / Oklahoma / Flash Flood Warnings in 1994

Flash Flood Warning 37, NWS Norman, OK

November 20, 1994Oklahoma County, Oklahoma

NWS Norman, OK issued this flash flood warning at Nov 20, 1994, 4:45 AM CST for Oklahoma County, Oklahoma. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Nov 20, 1994, 4:45 AM CST (10:45 UTC)
Expired
Nov 20, 1994, 7:00 AM CST
In force
2 hr
Issued by
NWS Norman, OK
Area
Whole counties

County Oklahoma County, OK

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.8 hours before the alert went out and 37 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 1994-11-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 00:00Z on 1994-11-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 494 square meters per square second.1939587897117Sfc1 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
1 J/kg
Mixed-layer CIN
-281 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
494 m²/s²
0-3 km storm-relative helicity
513 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.

NWS Norman, OK wrote its last area forecast discussion before this flash flood warning went out at Nov 20, 4:05 AM CST, 40 minutes earlier.

Area forecast discussion, Nov 20, 4:05 AM CST, 40 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Nov 19, 9:49 PM CSTSevere Thunderstorm WarningOUNKiowa22 min
Nov 19, 11:23 PM CSTTornado WarningOUNTillman37 min
Nov 20, 1:57 AM CSTFlash Flood WarningOUNOklahoma3 hr
Nov 19, 11:01 PM CSTTornado WarningOUNWilbarger29 min
Nov 20, 12:18 AM CSTTornado WarningOUNWichita42 min
Nov 20, 12:41 AM CSTSevere Thunderstorm WarningOUNFoard49 min

Nearby

Flash Flood Warnings in Oklahoma, 1994Every flash flood warning in 1994

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.