Alert archive / Texas / Tornado Warnings in 1991

Tornado Warning 13, NWS Amarillo, TX

May 11, 1991Swisher County, Texas

NWS Amarillo, TX issued this tornado warning at May 11, 1991, 9:06 PM CDT for Swisher County, Texas. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
May 11, 1991, 9:06 PM CDT (02:06 UTC)
Expired
May 11, 1991, 9:45 PM CDT
In force
39 min
Issued by
NWS Amarillo, TX
Area
Whole counties

County Swisher County, TX

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.1 hours before the alert went out and 78 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, Amarillo Airport, TX at 00:00Z on 1991-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2372 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, Amarillo Airport, TX at 00:00Z on 1991-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.193958Sfc1 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
2372 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1498 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
155 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 KAMA 120206
TORAMA
TXC437-120245-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
906 PM CDT SAT MAY 11 1991
 
THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  945 PM CDT
FOR THE PEOPLE IN THE FOLLOWING LOCATIONS
 
IN THE TEXAS PANHANDLE
 
   ...SOUTHERN SWISHER COUNTY
 
EMERGENCY MANAGEMENT OFFICIALS IN KRESS REPORT A TORNADO ON THE GROUND
2 TO 3 MILES WEST OF KRESS. THE STORM WAS MOVING TOWARD KRESS AT 15
MPH. TAKE COVER IMMEDIATELY.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

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, May 11, 4:05 PM CDT, 5 hours 1 minute before
TXZ001>009-NMZ005-009-013-OKZ001>003-130400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
405 PM CDT SAT MAY 11 1991

A TORNADO WATCH IS IN EFFECT FROM 4PM UNTIL 11 PM CDT SATURDAY
EVENING FOR EXTREME EASTERN NEW MEXICO...THE OKLAHOMA PANHANDLE
...AND THE WESTERN THREE FOURTHS OF THE TEXAS PANHANDLE. THE WATCH
INCLUDES THE FOLLOWING COUNTIES IN NEW MEXICO...UNION..CURRY..QUAY
AND ROOSEVELT...AND INCLUDES CIMARRON..TEXAS..AND BEAVER COUNTIES
IN THE OKLAHOMA PANHANDLE. THE FOLLOWING TEXAS COUNTIES ARE
INCLUDED DALLAM..HARTLEY..OLDHAM..DEAF SMITH..PARMER..CASTRO..
SHERMAN..MOORE..POTTER..RANDALL..SWISHER..HANSFORD..HUTCHINSON..
CARSON..ARMSTRONG..BRISCOE..OCHILTREE..ROBERTS..GRAY..DONLEY AND
HALL.

TORNADOES..LARGE HAIL..DANGEROUS LIGHTNING AND DAMAGING
THUNDERSTORM WINDS ARE POSSIBLE IN THESE AREAS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS.

LISTEN TO YOUR NOAA WEATHER RADIO...LOCAL RADIO  OR TELEVISION
STATIONS FOR LATER STATEMENTS...SAFETY PRECAUTIONS...AND POSSIBLE
WARNINGS.
Special weather statement, May 11, 4:39 PM CDT, 4 hours 27 minutes before
TXZ001>009-NMZ005-009-013-OKZ001>003-122245-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
440 PM CDT SAT MAY 11 1991

...TORNADO WATCH #315 IS IN EFFECT UNTIL 11PM CDT SATURDAY FOR
   THE OKLAHOMA PANHANDLE..AND THE WESTERN THREE FOURTHS OF THE
   TEXAS PANHANDLE...

AT 425 PM CDT...RADAR INDICATED A SMALL CLUSTER OF STRONG THUNDERSTORMS
FROM WESTERN HARTLEY COUNTY NORTH INTO WESTERN DALLAM COUNTY. THE STRONGEST
STORM WAS DETECTED BETWEEN TEXLINE AND DALHART. THESE THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND VERY HEAVY RAINS AS THEY MOVE NORTH AT 25 MILES AN
HOUR.

REMEMBER A TORNADO WATCH IS IN EFFECT FOR MOST OF THE PANHANDLES UNTIL
11 PM CDT SATURDAY. R_EMAIN ALERT FOR THREATENING WEATHER CONDITIONS AND
LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 11, 5:41 PM CDT, 3 hours 25 minutes before
TXZ001>009-NMZ005-009-013-OKZ001>003-112345-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
538 PM CDT SAT MAY 11 1991

...TORNADO WATCH #315 IS IN EFFECT UNTIL 11PM CDT SATURDAY FOR
   THE OKLAHOMA PANHANDLE..AND THE WESTERN THREE FOURTHS OF THE
   TEXAS PANHANDLE...

AT 525 PM CDT...RADAR INDICATED A LINE OF SCATTERED THUNDERSTORMS FROM
THE WEST PART OF DALLAM COUNTY NORTH ACROSS EXTREME WESTERN CIMARRON COUNTY
INTO THE SOUTHEAST TIP OF COLORADO. THE STRONGEST STORMS WITH VERY HEAVY
RAINS WERE SHOWN 10 MILES EAST AND SOUTHEAST OF TEXLINE IN DALLAM COUNTY.
THESE STORMS WILL BE MOVING INTO CIMARRON COUNTY SOUTH OF BOISE CITY DURING
THE NEXT HOUR...AS THEY MOVE NORTHEAST AT 15 MILES AN HOUR.

AN ISOLATED THUNDERSTORM HAD DEVELOPED DURING THE PAST HOUR IN THE SOUTH
PLAINS 15 MILES NORTHWEST OF LUBBOCK. REMEMBER A TORNADO WATCH IS IN EFFECT
UNTIL 11PM CDT FOR MOST OF THE AREA. REMAIN ALERT FOR THREATENING WEATHER
CONDITIONS AND STAY TUNED FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, May 11, 6:44 PM CDT, 2 hours 22 minutes before
TXZ001>009-NMZ005-009-013-OKZ001>003-120045-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
640 PM CDT SAT MAY 11 1991

...TORNADO WATCH #315 IS IN EFFECT UNTIL 11PM CDT SATURDAY FOR
   THE OKLAHOMA PANHANDLE..AND THE WESTERN THREE FOURTHS OF THE
   TEXAS PANHANDLE...

AT 625 PM CDT...RADAR INDICATED SCATTERED STRONG THUNDERSTORMS
INCREASING OVER THE SOUTH PLAINS FROM JUST NORTH OF ABERNATHY NORTH
TO AROUND PLAINVIEW AND INTO WESTERN SWISHER COUNTY TO NEAR HAPPY.
THESE STORMS ARE CAPABLE OF PRODUCING LARGE HAIL AND VERY HEAVY
RAINS AS THEY MOVE NORTH AT 15 MILES AN HOUR. THE STRONGEST STORMS
WERE INDICATED NORTHWEST OF PLAINVIEW AND WEST OF KRESS...AND WILL
BE MOVING INTO SOUTHWESTERN SWISHER COUNTY DURING THE NEXT HALF HOUR.

ANOTHER ISOLATED STRONG THUNDERSTORM WAS SHOWN IN THE NORTHWEST
PANHANDLES BETWEEN TEXLINE AND BOISE CITY. THIS STORM MAY PRODUCE
SMALL HAIL AND VERY HEAVY RAINS AS IT MOVES NORTH AT 15 MILES AN HOUR
INTO CIMARRON COUNTY DURING THE NEXT HALF HOUR.

REMEMBER A TORNADO WATCH IS IN EFFECT FOR MOST OF THE AREA UNTIL
11PM CDT. TORNADOES..LARGE HAIL AND DAMAGING THUNDERSTORM WINDS ARE
POSSIBLE IN THE WATCH AREA. REMAIN ALERT FOR THREATENING WEATHER
CONDITIONS...AND BE PREPARED TO SEEK IMMEDIATE SHELTER.

ASK YOUR LOCAL LAW ENFORECEMENT AGENCY TO FOREWARD YOUR SEVERE
WEATHER REPORTS TO THE NATIONAL WEATHER SERVICE.
Local storm report, May 11, 7:05 PM CDT, 2 hours 1 minute before
STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO, TX
705 PM CDT SAT MAY 11 1991

FOR AFTERNOON AND EVENING OF MAY 11 1991

700 PM CDT...GOLFBALL SIZE HAIL IN NAZARETH (ERN CASTRO CNTY)...REPORTED
    BY DPS

701 PM CDT...GOLFBALL SIZE HAIL IN HART (SOUTHEAST CASTRO CNTY)...REPORTED
    BY CASTRO CNTY SO

SC

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 7:04 PM CDTSevere Thunderstorm WarningAMACastro56 min
May 11, 7:24 PM CDTTornado WarningAMASwisher36 min
May 11, 7:44 PM CDTTornado WarningAMARandall31 min
May 11, 7:47 PM CDTTornado WarningAMACastro28 min
May 11, 8:06 PM CDTSevere Thunderstorm WarningAMAPotter, Randall44 min
May 11, 8:15 PM CDTSevere Thunderstorm WarningAMACastro, Swisher60 min
May 11, 8:23 PM CDTTornado WarningAMASwisher37 min
May 11, 9:13 PM CDTFlash Flood WarningAMACastro, Swisher3 hr
May 11, 9:17 PM CDTSevere Thunderstorm WarningAMACastro, Swisher58 min
May 11, 10:19 PM CDTFlash Flood WarningAMABriscoe116 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; the sounding from the Mesonet's radiosonde archive.