Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS Norman, OK

March 6, 1990Woodward County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 6, 1990, 7:15 PM CST for Woodward County, Oklahoma. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Mar 6, 1990, 7:15 PM CST (01:15 UTC)
Expired
Mar 6, 1990, 7:45 PM CST
In force
30 min
Issued by
NWS Norman, OK
Area
Whole counties

County Woodward County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 1.3 hours before the alert went out and 160 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, Dodge City, at 00:00Z on 1990-03-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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, Dodge City, at 00:00Z on 1990-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
33 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KOKC 070116
SVROKC
OKC153-070145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
715 PM CST TUE MAR 6 1990
 
THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM CST
FOR THE FOLLOWING OKLAHOMA LOCATIONS...
 
IN NORTHWEST OKLAHOMA
 
   ...EASTERN WOODWARD COUNTY
 
AT 715 PM RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTH OF
QUINLAN MOVING NORTH-NORTHEAST AT 30 MPH. LARGE HAIL IS POSSIBLE WITH
THIS STORM.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERnIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 6:20 PM CSTSevere Thunderstorm WarningOUNDewey40 min
Mar 6, 8:16 PM CSTSevere Thunderstorm WarningOUNGarvin, Grady, McClain59 min
Mar 6, 8:35 PM CSTSevere Thunderstorm WarningOUNEllis40 min
Mar 6, 8:42 PM CSTSevere Thunderstorm WarningOUNCanadian, Cleveland, Grady, Oklahoma63 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990

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.