Tornado Watch 219

Issued

May 3, 2007, 3:08 PM CDT (20:08 UTC)

Expired

May 3, 2007, 9:57 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Houston radar (KHGX), 151 km from the middle of the area, began a volume at 20:11 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.

Two or more tornadoes

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 665May 3, 2:19 PM CDT
• Mesoscale Discussion 671May 3, 6:34 PM CDT
• Mesoscale Discussion 676May 3, 8:50 PM CDT

000
WWUS20 KWNS 032008
SEL9  
SPC WW 032008
LAZ000-TXZ000-CWZ000-040400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 219
NWS STORM PREDICTION CENTER NORMAN OK
305 PM CDT THU MAY 3 2007

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

       WESTERN LOUISIANA
       SOUTHEAST TEXAS
       COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
1100 PM CDT.

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

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTHWEST OF
COLLEGE STATION TEXAS TO 40 MILES EAST OF FORT POLK LOUISIANA. 
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...CONTINUE...WW 217...WW 218...

DISCUSSION...VERY MOIST AND UNSTABLE AIR MASS HAS BEEN IN PLACE THRU
MUCH OF THE AFTERNOON.  MID LEVEL TROUGH AXIS IS NOW MOVING INTO
THIS REGION WITH MORE PROMINENT CONVECTIVE BOUNDARY EXTENDING FROM
ACT - LFK - IER.  STORMS ARE EXPECTED TO CONTINUE TO DEVELOP RAPIDLY
AND INTENSIFY WITH DEEP LAYER SHEAR OF 50 KT AND MLCAPE REACHING
INTO THE 1500-2000 J/KG RANGE.  THIS IS SUFFICIENT TO SUPPORT
SUPERCELLS ALONG AND SOUTH OF THE BOUNDARY DURING THE NEXT SEVERAL
HOURS.

AVIATION...TORNADOES AND 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 25035.


...MCCARTHY

Tornado Watches in Texas, 2007Tornado Watches in Louisiana, 2007Every tornado watch in 2007

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.