Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS Amarillo, TX

April 22, 1990Hemphill County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 22, 1990, 7:57 PM CDT for Hemphill County, Texas. It was in force for 63 min.

The area

The counties it named.

The facts

Issued: Apr 22, 1990, 7:57 PM CDT (00:57 UTC)
Expired: Apr 22, 1990, 9:00 PM CDT
In force: 63 min
Issued by: NWS Amarillo, TX
Area: Whole counties

County Hemphill County, TX

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

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.0 hours before the alert went out and 146 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 718 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1569 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 46 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 230100
SVRAMA
TXC211-230200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
757 PM CDT SUN APR 22 1990
 
THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  900 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN THE TEXAS PANHANDLE
          ...SOUTHERN HEMPHILL
 
AT 758 PM CDT...NATIONAL WEATHER SERVICE RADAR IN AMARILLO WAS
DETECTING A SEVERE THUNDERSTORM SOUTH SOUTHEAST OF CANADIAN ON THE
HEMPHILL-WHEELER COUNTY LINE. PEA SIZE HAIL WAS REPORTED AT 740 PM BY
THE HEMPHILL COUNTY SHERIFFS OFFICE WITH THIS STORM. DUE TO THE SLOW
MOVEMENT OF THIS STORM FLOODING OF LOW LYING AREAS AND ROADS IS
LIKELY.
 
MOVEMENT WAS NORTH AT ABOUT 5 MILES AN HOUR
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FL*OOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
TWG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 8:52 PM CDT	Flash Flood Warning	AMA	Hemphill	2 hr
Apr 23, 3:46 PM CDT	Severe Thunderstorm Warning	AMA	Castro, Swisher	59 min
Apr 23, 3:57 PM CDT	Severe Thunderstorm Warning	AMA	Randall	63 min
Apr 23, 4:39 PM CDT	Severe Thunderstorm Warning	AMA	Potter	66 min
Apr 23, 5:00 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	60 min
Apr 23, 5:22 PM CDT	Severe Thunderstorm Warning	AMA	Carson	68 min
Apr 23, 5:33 PM CDT	Severe Thunderstorm Warning	AMA	Swisher	57 min
Apr 23, 5:41 PM CDT	Severe Thunderstorm Warning	AMA	Briscoe	64 min
Apr 23, 6:00 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Sherman	60 min
Apr 23, 6:14 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	61 min
Apr 23, 6:49 PM CDT	Severe Thunderstorm Warning	AMA	Briscoe, Donley	56 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990 Every 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.