Alert archive / Texas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 8, NWS Amarillo, TX

February 24, 2000Hemphill County, Roberts County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Feb 24, 2000, 7:36 PM CST for Hemphill County, Roberts County, Texas. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

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

The facts

Issued
Feb 24, 2000, 7:36 PM CST (01:36 UTC)
Expired
Feb 24, 2000, 8:15 PM CST
In force
39 min
Issued by
NWS Amarillo, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Hemphill County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 119 km from the middle of the area, began a volume at 01:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Feb 24, 4:30 PM CSTTornado WatchSPC7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.6 hours before the alert went out and 119 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 2000-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 127 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 2000-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939587897117136Sfc1 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
127 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
2880 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KAMA 250137
SVRAMA
TXC211-393-250215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
736 PM CST THU FEB 24 2000

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ROBERTS COUNTY IN THE TEXAS PANHANDLE
  NORTHWESTERN HEMPHILL COUNTY IN THE TEXAS PANHANDLE

* UNTIL 815 PM CST

* AT 736 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES NORTHWEST OF MIAMI...MOVING NORTHEAST
  AT 40 MPH.

* SOME LOCATIONS AFFECTED BY THE STORM INCLUDE...
  MIAMI AND CANADIAN

LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH
THIS STORM. /TAKE COVER IN A SUBSTANTIAL SHELTER.

A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS.

LAT...LON 3576 10085 3564 10068 3603 10024 3607 10054

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 24, 3:05 AM CST, 16 hours 31 minutes earlier.

Area forecast discussion, Feb 24, 3:05 AM CST, 16 hours 31 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
305 AM CST THU FEB 24 2000

CURRENT ANALYSIS SHOWED A LEE TROUGH AT THE SURFACE AND A SHALLOW
RIDGE ALOFT. THE RIDGE WILL WEAKEN TODAY AS AN UPPER-LEVEL STORM
SYSTEM PUSHES INTO THE SOUTHWESTERN STATES. STRENGTHENING SOUTHWEST
FLOW ALOFT AND LOWERING PRESSURE WILL DEEPEN THE LEE TROUGH CURRENTLY
IN PLACE. AS A RESULT...SOUTHERLY GRADIENT WINDS WILL INCREASE INTO
THE BREEZY OR WINDY CATEGORIES TODAY. THIS WILL ADVECT ABUNDANT
LOW-LEVEL MOISTURE INTO THE EASTERN PANHANDLE THIS AFTERNOON SETTING
UP A DRYLINE IN THE EASTERN ZONES. THE DRYLINE SHOULD BECOME ACTIVE
LATE THIS AFTERNOON IN RESPONSE TO UPPER-LEVEL ENERGY AHEAD OF
THE APPROACHING TROUGH. SOME THUNDERSTORMS SHOULD DEVELOP IN THE
EASTERN ZONES AND CONTINUE THIS EVENING. THE STORMS SHOULD PUSH OUT
OF THE FORECAST AREA BY MIDNIGHT AS A LARGE TROUGH ENTERS THE REGION
AND A SURFACE LOW DEVELOPS IN EASTERN COLORADO. THIS LOW SHOULD PUSH
INTO NORTHWEST KANSAS MOST SIMILAR TO THE ETA/ECMWF SOLUTION. THIS
WILL PRODUCE A COLD FRONT WHICH SHOULD PUSH THROUGH THE FORECAST AREA
FRIDAY NIGHT. THE FRONT WILL CAUSE WINDS TO INCREASE FRIDAY DURING
THE MORNING AND AFTERNOON AND THERE IS A SLIGHT POSSIBILITY THAT A
WIND ADVISORY WILL BE NEEDED FRIDAY. WILL MENTION WINDY CONDITIONS
FRIDAY AFTERNOON.

FOR THE EXTENDED PERIOD...ANOTHER FAIRLY LARGE TROUGH ENTERS THE
WEST COAST ON SUNDAY SIMILAR TO THE LAST TWO UPPER-TROUGHS AND A
SURFACE LOW DEVELOPS OVER THE HIGH PLAINS. AT THIS TIME...THE SYSTEM
IS FORECAST TO BE FURTHER SOUTH. THIS MAY RESULT IN THE DEVELOPMENT
OF THUNDERSTORMS AS THE SYSTEM APPROACHES AND THERE MAY BE A NEED TO
INTRODUCE A SLIGHT CHANCE OF STORMS MONDAY AFTERNOON. WILL EVALUATE
THE NEW MRF WHEN IT COMES IN AND MAKE MY DECISION THEN. OTHERWISE...
AFTER A COOLER SATURDAY...EXPECT A PERSISTENT LEE TROUGH TO SET UP
WARMING THINGS UP FOR SUNDA3Y AND MONDAY.

PRELIM CCF...
AMA 74/36 56/28 63 --0
DHT 71/31 55/23 65 --0

.AMA...
TX...NONE.
OK...NONE.

CB

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 6:15 PM CSTSevere Thunderstorm WarningAMAGray, Roberts30 min
Feb 24, 6:44 PM CSTTornado WarningAMARoberts31 min
Feb 24, 6:48 PM CSTSevere Thunderstorm WarningAMAHemphill, Lipscomb42 min
Feb 24, 6:55 PM CSTSevere Thunderstorm WarningAMALipscomb50 min
Feb 24, 7:00 PM CSTSevere Thunderstorm WarningAMAGray60 min
Feb 24, 7:28 PM CSTSevere Thunderstorm WarningAMALipscomb47 min
Feb 24, 7:47 PM CSTTornado WarningAMALipscomb28 min
Feb 24, 8:00 PM CSTFlash Flood WarningAMALipscomb2 hr
Feb 24, 8:00 PM CSTSevere Thunderstorm WarningAMAWheeler30 min
Feb 24, 8:05 PM CSTSevere Thunderstorm WarningAMADonley25 min
Feb 24, 8:13 PM CSTTornado WarningAMALipscomb17 min
Feb 24, 8:17 PM CSTSevere Thunderstorm WarningAMAHemphill28 min
Feb 24, 8:30 PM CSTSevere Thunderstorm WarningAMALipscomb30 min
Feb 24, 8:43 PM CSTSevere Thunderstorm WarningAMACollingsworth, Wheeler62 min
Feb 24, 9:02 PM CSTSevere Thunderstorm WarningAMAHemphill, Lipscomb, Roberts43 min
Feb 24, 9:43 PM CSTSevere Thunderstorm WarningAMACollingsworth, Wheeler47 min
Feb 25, 12:58 AM CSTSevere Thunderstorm WarningAMACollingsworth32 min

Nearby

Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.