Severe Thunderstorm Watch 4

Issued

Feb 14, 2003, 5:30 PM CST (23:30 UTC)

Expired

Feb 14, 2003, 11:00 PM CST

In force

6 hr

Issued by

the Storm Prediction Center

The Corpus Christi radar (KCRP), 150 km from the middle of the area, began a volume at 23:31 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.

• Mesoscale Discussion 59Feb 14, 1:50 PM CST
• Mesoscale Discussion 62Feb 14, 3:55 PM CST
• Mesoscale Discussion 63Feb 14, 5:06 PM CST
• Mesoscale Discussion 68Feb 14, 9:12 PM CST
• Mesoscale Discussion 70Feb 14, 10:16 PM CST

000 
WWUS20 KWNS 142330
SEL4
SPC WW 142330
TXZ000-150500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 4
STORM PREDICTION CENTER NORMAN OK
530 PM CST FRI FEB 14 2003

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHERN TEXAS                              

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 85 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES EAST SOUTHEAST OF LAREDO
TEXAS TO 50 MILES NORTHEAST OF SAN ANTONIO TEXAS.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.  SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 1.  WATCH NUMBER 1 WILL NOT BE IN
EFFECT AFTER 530 PM CST.  CONTINUE...WW 2...WW 3...

DISCUSSION...CONVECTION CONTINUES TO SPREAD ENEWD OUT OF THE RIO
GRANDE VALLEY LATE THIS AFTERNOON...WHICH HAS STRUGGLED TO MAINTAIN
ITS INTENSITY UPTIL NOW.  HOWEVER...LARGE SCALE ASCENT ASSOCIATED
WITH APPROACHING UPPER TROUGH IS STILL TO THE WEST.  THUS...SEVERE
THUNDERSTORM DEVELOPMENT IS STILL EXPECTED AS UVV/S OVERSPREAD THIS
AREA THIS EVENING.  MODERATE INSTABILITY AND SUFFICIENT DEEP LAYER
SHEAR REMAINS IN PLACE FOR ORANIZED CONVECTION...INCLUDING
SUPERCELLS...WITH PRIMARY THREATS OF LARGE HAIL AND DAMAGING WINDS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.  MEAN STORM
MOTION VECTOR 26040.


...EVANS

272,1002 300,0991 300,0962 272,0973

Severe Thunderstorm Watches in Texas, 2003Every severe thunderstorm watch in 2003

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.