Severe Thunderstorm Warning 9, NWS Amarillo, TX

Issued

Apr 12, 2002, 11:45 PM CDT (04:45 UTC)

Expired

Apr 13, 2002, 12:45 AM CDT

In force

60 min

Issued by

NWS Amarillo, TX

Area

Counties, with a storm outline in the text

County Oldham County, TX

The Amarillo radar (KAMA), 76 km from the middle of the area, began a volume at 04:46 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.

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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS54 KAMA 130445
SVRAMA
TXC359-130545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1144 PM CDT FRI APR 12 2002

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OLDHAM COUNTY IN THE TEXAS PANHANDLE

* UNTIL 1245 AM CDT

* AT 1142 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 17 MILES NORTH OF ADRIAN...OR ABOUT 19 MILES
  NORTHWEST OF VEGA...MOVING SOUTHEAST AT 25 MPH.

TWO INCH DIAMETER HAIL IS EXPECTED WITH THIS STORM-TAKE COVER NOW. 
GO TO THE LOWEST FLOOR OF A STURDY BUILDING AND AVOID WINDOWS

DAMAGING WINDS CAN BE EXPECTED. IF YOU CANNOT GET UNDERGROUND...GO
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS A TORNADO WATCH IS ALSO IN AFFECT.

LAT...LON 3561 10259 3544 10269 3524 10267 3522 10226
          3559 10220

NWS Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 12, 2:25 PM CDT, 9 hours 20 minutes earlier.

TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
225 PM CDT FRI APR 12 2002

INITIAL COLD FRONT HAS DRIFTED WELL SOUTH OF THE PANHANDLES
THIS AFTERNOON. SURFACE FLOW IS NOW RESPONDING TO THE SHORT
WAVE MOVING ACROSS THE GREAT BASIN INTO THE CENTRAL ROCKIES.
THUNDERSTORMS ARE DEVELOPING OVER THE SOUTHERN COLORADO AND
NORTHERN NEW MEXICO MOUNTAINS NOW. THESE STORMS ARE EXPECTED TO
CONTINUE TO DRIFT EAST SOUTHEAST THROUGH TONIGHT AND INCREASE
IN COVERAGE AS THEY DO.  DIFFLUENT THICKNESS ACROSS THE
NORTHERN ZONES AND MOIST SOUTHEAST UPSLOPE WINDS SUGGEST THE
POSSIBILITY OF HEAVY RAIN ALONG WITH THE SEVERE THREAT THAT SPS
HAS LAID OUT IN THE DAY ONE AND DAY TWO OUTLOOKS. SHORT WAVE SHOULD
ONLY SLOWLY DRAG ACROSS THE AREA TONIGHT AND SATURDAY...SO WILL
LINGER SOME HIGHER POPS INTO SATURDAY...ESPECIALLY ACROSS THE
EAST. IT ALSO LOOKS LIKE THE NORTHERN ZONES WILL BE MOST FAVORED
TONIGHT...SO WILL GO WITH HIGHER POPS THERE.

SEVERE THREAT COULD LINGER INTO SATURDAY AS PER SWODY2...HOWEVER IT
WILL DEPEND ON HOW MUCH HEATING WE CAN GET DURING THE DAY AND HOW
MANY LEFTOVER BOUNDARIES THERE ARE.

THE THUNDERSTORM CHANCES WILL GO DOWN FOR SUNDAY AS LEE-SIDE
TROUGH GETS ESTABLISHED. HOWEVER...LOW LEVEL MOISTURE WILL STILL BE
AROUND...AND WITH STRONG HEATING...COULD NOT RULE OUT SOME
CONVECTION.

WE WILL NOT CHANGE MUCH TO THE EXTENDED FORECAST. UPPER FLOW GOES
FROM A WEAK ZONAL FLOW THIS WEEKEND TO A MUCH FASTER SOUTHWEST FLOW
BY MID NEXT WEEK. A STRONG UPPER LEVEL TROUGH IS FORECAST TO DIG INTO
THE NORTHERN ROCKIES AND THE PANHANDLES WILL BE TO THE SOUTHEAST OF
THIS TROUGH. COLD FRONT IS EXPECTED TO MOVE THROUGH TUESDAY NIGHT
AND THEN A REINFORCING SHOT MOVES THROUGH THURSDAY NIGHT. FOR NOW
WE WILL KEEP SLIGHT CHANCES OF CONVECTION IN THE FORECAST WHERE IT
IS AND WE WILL ADD FRIDAY WITH A SLIGHT CHANCE AS WELL.

A FEW NUMBERS TO PONDER:

AMA 51/71 50/80 51 642
DHT 48/71 47/79 48 +32
BVR 52/70 51/80 52 +52

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

GOEHRING

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002

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; radar from the NEXRAD Level II archive.