Tornado Watch 129

Issued

Apr 6, 2005, 2:55 AM CDT (07:55 UTC)

Expired

Apr 6, 2005, 10:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

• Mesoscale Discussion 499Apr 6, 5:45 AM CDT
• Mesoscale Discussion 500Apr 6, 7:46 AM CDT
• Mesoscale Discussion 501Apr 6, 9:29 AM CDT

000 
WWUS20 KWNS 060757
SEL9  
SPC WW 060757
LAZ000-MSZ000-CWZ000-061500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 129
NWS STORM PREDICTION CENTER NORMAN OK
255 AM CDT WED APR 6 2005

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

       SOUTHERN AND EASTERN LOUISIANA
       SOUTHERN MISSISSIPPI
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY MORNING FROM 255 AM UNTIL 1000 AM CDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 125 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES WEST NORTHWEST OF
JACKSON MISSISSIPPI TO 35 MILES EAST SOUTHEAST OF INTRACOASTAL
CITY 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.

DISCUSSION...BROKEN LINE OF STORMS CONTINUES TO INCREASE ACROSS
CENTRAL AND SWRN LA ATTM AHEAD OF COLD FRONT AND ASSOCIATED /
APPROACHING UPPER TROUGH.

DEGREE OF LOW-LEVEL MOISTURE / INSTABILITY AND FAVORABLY STRONG /
VEERING FLOW WITH HEIGHT SHOULD CONTINUE TO SUPPORT ROTATING STORMS
THROUGH THIS MORNING.  WEAK WARM FRONT RETREATING NWD ACROSS ERN LA
/ SRN MS MAY PROVIDE A FAVORABLE ZONE FOR ENHANCED SEVERE STORM
POTENTIAL...IN ADDITION TO ISOLATED THREAT WITHIN PRE-FRONTAL LINE. 
THOUGH HAIL POTENTIAL SHOULD REMAIN LIMITED...A TORNADO OR TWO ALONG
WITH THE POTENTIAL FOR A BRIEF / LOCALLY DAMAGING GUST WILL BE
POSSIBLE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 25030.


...CORFIDI/GOSS

322,0881 293,0893 293,0934 322,0923

Tornado Watches in Louisiana, 2005Tornado Watches in Mississippi, 2005Every tornado watch in 2005

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.