Tornado Watch 81

Issued

Apr 8, 2002, 12:30 PM CDT (17:30 UTC)

Expired

Apr 8, 2002, 6:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

000 
WWUS20 KWNS 081727
SEL1  
SPC WW 081719
ALZ000-LAZ000-MSZ000-CWZ000-082300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 81
STORM PREDICTION CENTER NORMAN OK
1219 PM CDT MON APR 8 2002

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

   SOUTHWEST ALABAMA                            
   SOUTHEAST LOUISIANA                          
   SOUTHEAST MISSISSIPPI                        
   AND ADJACENT COASTAL WATERS                     

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL 600
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 95 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 50 MILES SOUTH SOUTHEAST OF HOUMA LOUISIANA TO 65
MILES NORTH NORTHWEST OF MOBILE ALABAMA.

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...SQUALL LINE/GUST FRONT ASSOCIATED WITH MCS OVER MS/AL
CONTINUES TO MOVE EWD INTO DESTABILIZING AIR MASS.  CAPE VALUES ARE
AROUND 2000 J/KG ACROSS PARTS OF SERN LA INTO SWRN AL AND MODEL
SOUNDINGS INDICATE THAT THERE IS SUFFICIENT VERTICAL SHEAR TO
PROMOTE ISOLATED TORNADOES.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 80 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 26035.


...THONPSON/MCCARTHY

285,0913 313,0895 313,0872 285,0890

WWUS20 KWNS 081727
SEL1  
SPC WW 081719
ALZ000-LAZ000-MSZ000-CWZ000-082300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 81
STORM PREDICTION CENTER NORMAN OK
1219 PM CDT MON APR 8 2002

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

   SOUTHWEST ALABAMA                            
   SOUTHEAST LOUISIANA                          
   SOUTHEAST MISSISSIPPI                        
   AND ADJACENT COASTAL WATERS                     

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL 600
PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 95 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 50 MILES SOUTH SOUTHEAST OF HOUMA LOUISIANA TO 65
MILES NORTH NORTHWEST OF MOBILE ALABAMA.

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...SQUALL LINE/GUST FRONT ASSOCIATED WITH MCS OVER MS/AL
CONTINUES TO MOVE EWD INTO DESTABILIZING AIR MASS.  CAPE VALUES ARE
AROUND 2000 J/KG ACROSS PARTS OF SERN LA INTO SWRN AL AND MODEL
SOUNDINGS INDICATE THAT THERE IS SUFFICIENT VERTICAL SHEAR TO
PROMOTE ISOLATED TORNADOES.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 80 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 26035.


...THONPSON/MCCARTHY

285,0913 313,0895 313,0872 285,0890

Tornado Watches in Louisiana, 2002Tornado Watches in Mississippi, 2002Tornado Watches in Alabama, 2002Every tornado watch in 2002

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.