Alert archive / Texas / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 310, NWS Norman, OK

May 25, 1994Knox County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 25, 1994, 6:17 PM CDT for Knox County, Texas. It was in force for 43 min.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
May 25, 1994, 6:17 PM CDT (23:17 UTC)
Expired
May 25, 1994, 7:00 PM CDT
In force
43 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Knox County, TX

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 12:00Z, 11.3 hours before the alert went out and 205 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, Stephenville/Cla, TX at 12:00Z on 1994-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 186 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, Stephenville/Cla, TX at 12:00Z on 1994-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 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
186 J/kg
Mixed-layer CIN
-159 J/kg
Mixed-layer LCL
740 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KOKC 252318
SVROUN
TXC275-260000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
617 PM CDT WED MAY 25 1994

THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM CDT FOR
PEOPLE IN THE FOLLOWING COUNTIES

IN NORTHERN TEXAS
     KNOX

INCLUDING THE FOLLOWING LOCATIONS
     GOREE...KNOX CITY...MUNDAY...BENJAMIN AND VERA

AT 617 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES
SOUTHWEST OF KNOX CITY.

THE STORM WAS MOVING NORTHEAST AT 25 MPH

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND HEAVY RAIN.  FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO DONT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.


LAT...LON 3339  9948 3338  9999 3364  9998 3369  9948

  _
SPEG

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 7:10 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor50 min
May 24, 7:16 PM CDTSevere Thunderstorm WarningOUNClay, Wichita44 min
May 24, 9:16 PM CDTSevere Thunderstorm WarningOUNArcher44 min
May 24, 9:34 PM CDTSevere Thunderstorm WarningOUNFoard41 min
May 24, 10:01 PM CDTSevere Thunderstorm WarningOUNFoard, Knox44 min
May 24, 10:29 PM CDTSevere Thunderstorm WarningOUNBaylor46 min
May 25, 6:38 PM CDTSevere Thunderstorm WarningOUNHardeman37 min
May 25, 6:58 PM CDTSevere Thunderstorm WarningOUNKnox62 min

Nearby

Severe Thunderstorm Warnings in Texas, 1994Every severe thunderstorm 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.