URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 140
NWS STORM PREDICTION CENTER NORMAN OK
735 AM CDT FRI APR 15 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN AND NORTHERN ALABAMA
CENTRAL AND EASTERN LOUISIANA
CENTRAL AND SOUTHERN MISSISSIPPI
EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 735 AM UNTIL 300
PM CDT.
NUMEROUS TORNADOES
ISOLATED INTENSE TORNADOES POSSIBLE
WIDESPREAD DAMAGING WINDS TO 70 MPH
SCATTERED LARGE HAIL TO 2.0 INCHES IN DIAMETER
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF MUSCLE
SHOALS ALABAMA TO 45 MILES SOUTH OF NATCHEZ 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...CONTINUE...WW 139...
DISCUSSION...NE-SW MS/LA SQLN EXPECTED TO CONTINUE GENERALLY EWD
THROUGH EARLY AFTERNOON. SYSTEM MAY BREAK INTO MORE SEMI-DISCRETE
STORMS/LINE SEGMENTS...AND ADDITIONAL STORMS MAY FORM IN
CONFLUENT/MOISTENING LOW-LVL FLOW AHEAD OF LINE...AS SFC HEATING
FURTHER DESTABILIZES REGION. 12Z KJAN SOUNDING AND UPSTREAM WIND
PROFILES SUGGEST WW AREA WILL HAVE THERMODYNAMIC AND WIND
ENVIRONMENT SUPPORTIVE OF SUSTAINED SUPERCELLS AND LEWPS. THESE MAY
YIELD A COUPLE STRONG TORNADOES...IN ADDITION TO DMGG WIND AND HAIL.
STORMS IN NRN AL MAY REMAIN SLIGHTLY ELEVATED...BUT WILL STILL HAVE
THE POTENTIAL TO PRODUCE LOCALLY DMGG WIND AND PERHAPS ISOLD
TORNADOES.
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
550. MEAN STORM MOTION VECTOR 25040.
No comments:
Post a Comment