MS/AL Severe Weather Thread
Posted: Wed Apr 06, 2005 7:33 am
Code: Select all
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 130
NWS STORM PREDICTION CENTER NORMAN OK
700 AM CDT WED APR 6 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST ALABAMA
SOUTHERN AND EASTERN LOUISIANA
SOUTHERN...CENTRAL AND EASTERN MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 700 AM UNTIL
100 PM 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 95 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 65 MILES WEST OF INTRACOASTAL CITY
LOUISIANA TO 50 MILES EAST SOUTHEAST OF MERIDIAN MISSISSIPPI. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).
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 129. WATCH NUMBER 129 WILL NOT BE IN EFFECT AFTER 700
AM CDT.
DISCUSSION...THREAT FOR ISOLATED TORNADOES EXPECTED TO PERSIST
THROUGH THE MORNING AS BOUNDARY LAYER CONTINUES TO RECOVER AHEAD OF
EWD-MOVING SQUALL LINE WITH EMBEDDED SUPERCELLS. LOW LEVEL
DIRECTIONAL SHEAR WILL CONTINUE TO BE MAXIMIZED INVOF DIFFUSE WARM
FRONT ATTM EXTENDING FROM HEZ/JAN SSE TO NEAR BVE...WHERE 0-1 KM SRH
IS ON THE ORDER OF 200 M2/S2. ISOLATED STRONG CELLS/SUPERCELLS
EXPECTED TO SHIFT NEWD FROM THE NWRN GULF INTO SRN LA.
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 23030.
...CORFIDI
Tornadic Supercells have fired especially south and east of the broken line from Jackson southward to near Baton Rouge. Instablility, moisture, and shear values are becoming increasingly favorable for tornadoes.
