Tornado Watch 154

Issued

Apr 3, 2000, 7:00 AM CDT (12:00 UTC)

Expired

Apr 3, 2000, 12:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

000 
WWUS9 KMKC 031133
MKC WW 031133
LAZ000-MSZ000-031700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 154
STORM PREDICTION CENTER NORMAN OK
633 AM CDT MON APR 3 2000

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

   SOUTHEAST LOUISIANA                          
   CENTRAL AND SOUTHERN MISSISSIPPI                        

EFFECTIVE THIS MONDAY MORNING FROM 700 AM UNTIL NOON CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM HOUMA LOUISIANA TO 55 MILES NORTHWEST OF MERIDIAN
MISSISSIPPI.

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 SEVERE
THUNDERSTORM WATCH NUMBER 152.  WATCH NUMBER 152 WILL NOT BE IN
EFFECT AFTER 700 AM CDT.  CONTINUE...WW 153...

DISCUSSION...LINE OF STRONG/SEVERE THUNDERSTORMS FROM EXTREME WEST
CENTRAL MS SWD INTO SRN LA IS EXPECTED TO CONTINUE EWD 35-40 KT. 
LINE CONTAINS NUMEROUS LEWPS/BOW ECHOES WITH RADARS SHOWING
ROTATION WITH SOME BOW ECHOES.  VAD WINDS AT JAN VEER AND INCREASE
WITH HEIGHT RESULTING IN LARGE HODOGRAPH WITH 80 M/S SHEAR IN THE
LOWEST 6 KM AND SRH ABOVE 600 M2/S2.  IN ADDITION...LIX VAD WINDS
HAVE INCREASED TO 50 KT IN LOWEST LEVELS.  OLD OUTFLOW BOUNDARY
EXTENDS E/W ACROSS SRN MS...AND THIS IS LIKELY TO ENHANCE TORNADIC
SUPERCELL POTENTIAL FOR CELLS THAT MOVE ALONG OR NORTH OF THE
BOUNDARY.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24045.


...WEISS

;293,0915 325,0904 325,0880 293,0892;

Tornado Watches in Mississippi, 2000Tornado Watches in Louisiana, 2000Every tornado watch in 2000

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.