Tornado Watch 99

Issued

Mar 19, 2006, 8:34 PM CST (02:34 UTC)

Expired

Mar 20, 2006, 4:00 AM CST

In force

7 hr

Issued by

the Storm Prediction Center

The Austin/San Antonio radar (KEWX), 79 km from the middle of the area, began a volume at 02:36 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 320Mar 19, 5:36 PM CST
• Mesoscale Discussion 323Mar 19, 10:32 PM CST
• Mesoscale Discussion 324Mar 19, 11:37 PM CST
• Mesoscale Discussion 325Mar 20, 1:26 AM CST
• Mesoscale Discussion 327Mar 20, 3:36 AM CST

000 
WWUS20 KWNS 200234
SEL9  
SPC WW 200234
TXZ000-201000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 99
NWS STORM PREDICTION CENTER NORMAN OK
835 PM CST SUN MAR 19 2006

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTH CENTRAL TEXAS

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 835 PM UNTIL
400 AM CST.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE MILES
EITHER SIDE OF A LINE FROM 65 MILES WEST OF COTULLA TEXAS TO 15
MILES NORTH OF COLLEGE STATION TEXAS.  FOR A COMPLETE DEPICTION OF
THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU9).

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 AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 97. WATCH NUMBER 97 WILL NOT BE IN EFFECT AFTER 835
PM CST. CONTINUE...WW 98...

DISCUSSION...ONGOING SEVERE THUNDERSTORMS ACROSS TX HILL COUNTRY
WILL CONTINUE WITH ADDITIONAL DEVELOPMENT EXPECTED FURTHER SW ALONG
RIO GRANDE VALLEY AS STRONG UPPER JET APPROACHES FROM NRN MEX. WITH
A VERY MOIST AND MODERATELY UNSTABLE AIR MASS IN PLACE TO S OF WARM
FRONT WHICH EXTENDS FROM NEAR AUS EWD...AND STRONG DEEP LAYER
SHEAR...SUPERCELLS WILL CONTINUE TO DEVELOP.  IN ADDITION TO LARGE
HAIL...TORNADOES WILL BE A THREAT WITH ANY SUPERCELL. IN ADDITION
SHORT LINES/BOWS COULD EVOLVE OUT OF STORMS OVERNIGHT ENHANCING WIND
DAMAGE POTENTIAL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 25035.


...HALES

Tornado Watches in Texas, 2006Every tornado watch in 2006

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.