Alert archive / Texas / Tornado Warnings in 1991

Tornado Warning 4, NWS Fort Worth, TX

March 21, 1991Stephens County, Texas

NWS Fort Worth, TX issued this tornado warning at Mar 21, 1991, 11:08 PM CST for Stephens County, Texas. It was in force for 67 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Mar 21, 1991, 11:08 PM CST (05:08 UTC)
Expired
Mar 22, 1991, 12:15 AM CST
In force
67 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Stephens County, TX

What was reported inside it

TimeReportWhereRemark
Mar 21, 11:40 PM CSTHail 1.75Stephens, TX
Mar 21, 11:55 PM CSTHail 1.75Stephens, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Stephenville/Cla, TX (KSEP), launched 00:00Z, 5.1 hours before the alert went out and 90 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 00:00Z on 1991-03-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1683 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 00:00Z on 1991-03-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 171 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
1683 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1841 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
171 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
0.3
Supercell composite
8.7

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 tornado 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, Mar 21, 5:40 PM CST, 5 hours 28 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
540 PM CST THU MAR 21 1991

A TORNADO WATCH CONTINUES IN EFFECT FOR NORTH CENTRAL TEXAS UNTIL 9 PM
CST AND INCLUDES THE CITIES OF SHERMAN...PARIS...DALLAS...FORT
WORTH...STEPHENVILLE...MINERAL WELLS...PALO PINTO AND BROWNWOOD.

AT 535 PM...WEATHER RADAR AT STEPHENVILLE INDICATED THUNDERSTORMS
SCATTERED IN A LINE FROM NEAR MONTAGUE TO SOUTHEAST OF GRAHAM TO PALO
PINTO TO JUST EAST OF RISING STAR. THE STRONGEST STORM WAS LOCATED JUST
EAST OF RISING STAR IN SOUTHERN EASTLAND COUNTY AND WILL MOVE ACROSS
SOUTHERN EASTLAND...NORTHERN COMANCHE...AND NORTHERN ERATH COUNTY
BETWEEN 535 AND 630 PM. ALL STORMS WERE MOVING NORTHEAST AT 40 MILES AN
HOUR.

ALTHOUGH THE STORMS OVER NORTH TEXAS CONTINUED TO REMAIN BELOW SEVERE
LIMITS...CONDITIONS REMAIN FAVORABLE FOR THE SOME OF THE STORMS TO
BECOME SEVERE LATER THIS EVENING AS A DRY LINE PUSHES INTO THE VERY
UNSTABLE ATMOSPHERE ACROSS NORTH CENTRAL TEXAS.

THUNDERSTORMS THAT DEVELOP IN NORTH TEXAS THIS AFTERNOON HAVE THE
POTENTIAL TO PRODUCE LARGE HAIL...DANGEROUS LIGHTNING...HEAVY RAINS AND
POSSIBLE TORNADOES.

RESIDENTS...EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTERS SHOULD
REMAIN ON ALERT FOR THREATENING WEATHER CONDITIONS THROUGH THIS
EVENING.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
Special weather statement, Mar 21, 9:36 PM CST, 1 hour 32 minutes before
TXZ019>033-220415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
935 PM CST THU MAR 21 1991

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MUCH OF NORTH CENTRAL
TEXAS UNTIL 3 AM TOMORROW MORNING. THE WATCH INCLUDES THE CITIES OF
DALLAS...FORT WORTH...SHERMAN...PARIS...MINERAL WELLS...PALO PINTO AND
BROWNWOOD.

AT 930 PM...NATIONAL WEATHER SERVICE RADAR AT STEPHENVILLE INDICATED A
LINE OF STRONG THUNDERSTORMS FROM NEAR WICHITA FALLS SOUTHWEST TO NEAR
ABILENE. THIS LINE WAS SHOWING LITTLE EASTWARD PROGRESS WHILE THE
INDIVIDUAL STORMS WERE TRACKING NORTHEAST AT ABOUT 30 TO 35 MILES AN
HOUR.

THE LINE OF STORMS OVER THE WESTERN THIRD OF NORTH TEXAS HAD DEVELOPED
ALONG A COLD FRONT. THESE STORMS WERE ALMOST PARALLEL TO SOUTHWESTERLY
WINDS ALOFT AND AS A RESULT WERE SHOWING LITTLE EASTWARD PROGRESS. THIS
SITUATION IS CONDUCIVE FOR HEAVY VERY HEAVY RAINFALL AMOUNTS IN AREAS
AFFECTED BY THE STORMS AS STORMS TRACK REPEATEDLY OVER THE SAME AREA.

THE COLD FRONT AND ASSOCIATED STORMS WILL DRIFT SLOWLY EAST DURING THE
LATE NIGHT AND EARLY MORNING HOURS AS AN UPPER LEVEL LOW PRESSURE AREA
MOVES SLOWLY EAST OUT OF THE SOUTHWEST UNITED STATES. HEAVY RAINFALL
ASSOCIATED WITH THIS LINE OF STORMS COULD POSE A FLASH FLOOD THREAT TO
NORTH CENTRAL AND NORTHEAST TEXAS DURING THE EARLY MORNING HOURS IF THE
STORMS CONTINUE THEIR PRESENT SLOW EASTWARD PROGRESS.

IT NOW APPEARS THAT THE GREATEST THREAT FROM THE THUNDERSTORMS MOVING
ACROSS NORTH TEXAS APPEARS TO BE STRONG GUSTY WINDS...SMALL HAIL...AND
VERY HEAVY RAIN WHICH COULD PRODUCE LOCAL FLASH FLOODING...HOWEVER AN
ISOLATED TORNADO CANNOT BE RULED OUT.

RESIDENTS...EMERGENCY MANAGEMENT OFFICIALS AND STORM SMPOTTERS SHOULD
REMAIN ON ALERT FOR THREATENING WEATHER CONDITIONS THIS EVENING AND
DURING THE EARLY MORNING HOURS.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
Special weather statement, Mar 21, 10:17 PM CST, 51 minutes before
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Special weather statement, Mar 21, 10:41 PM CST, 27 minutes before
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 21, 6:32 PM CSTTornado WarningFWDCooke, Grayson28 min
Mar 21, 6:44 PM CSTSevere Thunderstorm WarningFWDParker, Wise61 min
Mar 21, 7:23 PM CSTSevere Thunderstorm WarningFWDCooke67 min
Mar 21, 7:27 PM CSTSevere Thunderstorm WarningFWDNolan, Taylor63 min
Mar 21, 7:28 PM CSTSevere Thunderstorm WarningFWDNolan, Taylor62 min
Mar 21, 8:02 PM CSTSevere Thunderstorm WarningFWDShackelford, Throckmorton58 min
Mar 21, 8:02 PM CSTSevere Thunderstorm WarningFWDJones58 min
Mar 21, 8:32 PM CSTSevere Thunderstorm WarningFWDNolan, Taylor58 min
Mar 21, 8:40 PM CSTSevere Thunderstorm WarningFWDArcher, Young50 min
Mar 21, 9:23 PM CSTSevere Thunderstorm WarningFWDClay67 min
Mar 21, 9:34 PM CSTSevere Thunderstorm WarningFWDNolan, Taylor56 min
Mar 21, 9:56 PM CSTTornado WarningFWDTaylor64 min
Mar 21, 10:25 PM CSTSevere Thunderstorm WarningFWDCallahan65 min
Mar 21, 10:59 PM CSTSevere Thunderstorm WarningFWDEastland, Stephens61 min
Mar 21, 11:03 PM CSTTornado WarningFWDShackelford27 min
Mar 21, 11:42 PM CSTTornado WarningFWDPalo Pinto63 min
Mar 21, 11:48 PM CSTSevere Thunderstorm WarningFWDYoung42 min
Mar 21, 11:59 PM CSTSevere Thunderstorm WarningFWDJack46 min
Mar 22, 12:37 AM CSTSevere Thunderstorm WarningFWDWise68 min
Mar 22, 12:42 AM CSTSevere Thunderstorm WarningFWDYoung33 min
Mar 22, 12:44 AM CSTSevere Thunderstorm WarningFWDJack31 min
Mar 22, 1:08 AM CSTSevere Thunderstorm WarningFWDCooke52 min
Mar 22, 1:16 AM CSTSevere Thunderstorm WarningFWDMontague44 min
Mar 22, 1:45 AM CSTSevere Thunderstorm WarningFWDGrayson30 min
Mar 22, 2:00 AM CSTSevere Thunderstorm WarningFWDCooke60 min
Mar 22, 6:07 AM CSTSevere Thunderstorm WarningFWDCollin, Hunt, Rockwall53 min
Mar 22, 6:23 AM CSTTornado WarningFWDHunt37 min
Mar 22, 9:10 AM CSTSevere Thunderstorm WarningFWDMorris, Titus35 min

Nearby

Tornado Warnings in Texas, 1991Every tornado warning in 1991Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.