SPC Tornado Watch 44
Tue, 08 Mar 2011 19:42:02 -0600
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 44 NWS STORM PREDICTION CENTER NORMAN OK 735 PM CST TUE MAR 8 2011 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF FAR SOUTHWEST ALABAMA SOUTHERN ARKANSAS LOUISIANA CENTRAL AND SOUTHERN MISSISSIPPI COASTAL WATERS EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 735 PM UNTIL 300 AM CST. 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 85 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST OF NATCHITOCHES LOUISIANA TO 55 MILES NORTHEAST OF GULFPORT MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). 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 42...WW 43... DISCUSSION...BI-MODAL SEVERE WEATHER EPISODE ONGOING FROM THE ARKLATEX INTO MS/AL IS EXPECTED TO CONTINUE INTO THE EARLY MORNING HOURS WEDNESDAY ALONG AND SOUTH OF WARM FRONT LIFTING NWD THROUGH THE REGION. 00Z OBSERVED SOUNDINGS WITHIN SYSTEM WARM SECTOR SAMPLED A VERY MOIST BOUNDARY LAYER WHICH WHEN COUPLED WITH RATHER STEEP MIDLEVEL LAPSE RATES WAS RESULTING IN A MODERATELY UNSTABLE AIR MASS WITH MLCAPE VALUES OF 1000-2000 J/KG. WHILE SOME DECREASE IN INSTABILITY WILL OCCUR WITH THE ONSET OF NOCTURNAL COOLING...MORE THAN SUFFICIENT INSTABILITY WILL PERSIST TO SUSTAIN ONGOING STORMS. AREA VWPS/PROFILERS INDICATE THAT LOW-LEVEL WIND FIELD HAS VEERED ACROSS ERN TX...HOWEVER RATHER STRONG LOW-LEVEL SHEAR IS EXPECTED TO PERSIST FARTHER E INTO THE LOWER MS VALLEY /IN CONJUNCTION WITH 50+ KT LLJ/ WITH EFFECTIVE SRH VALUES OF 300-600 M2/S2. AS SUCH...ENVIRONMENT WILL REMAIN SUPPORTIVE OF EMBEDDED SUPERCELLS CAPABLE OF TORNADOES /SOME POSSIBLY STRONG/...DAMAGING WINDS AND HAIL. 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 500. MEAN STORM MOTION VECTOR 25035. ...MEADRead more
SPC Tornado Watch 44 Status Reports
Tue, 08 Mar 2011 19:42:11 -0600
STATUS FOR WATCH 0044 HAS NOT BEEN ISSUED YETRead more
SPC Tornado Watch 43 Status Reports
Tue, 08 Mar 2011 18:37:03 -0600
STATUS REPORT ON WW 43 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SE DAL TO 15 ENE PRX TO 20 NNE DEQ. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0208 ..ROGERS..03/09/11 ATTN...WFO...SHV...OUN...TSA...FWD... STATUS REPORT FOR WT 43 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ARC081-091-133-090140- AR . ARKANSAS COUNTIES INCLUDED ARE LITTLE RIVER MILLER SEVIER TXC037-063-067-119-159-183-203-223-257-315-343-379-387-423-449- 459-467-499-090140- TX . TEXAS COUNTIES INCLUDED ARE BOWIE CAMP CASS DELTA FRANKLIN GREGG HARRISON HOPKINS KAUFMAN MARION MORRIS RAINS RED RIVER SMITH TITUS UPSHUR VAN ZANDT WOOD THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASERead more
SPC Tornado Watch 42 Status Reports
Tue, 08 Mar 2011 18:39:04 -0600
STATUS REPORT ON WW 42 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..ROGERS..03/09/11 ATTN...WFO...LCH...LIX...SHV...JAN... STATUS REPORT FOR WT 42 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS LAC001-003-005-009-011-019-021-023-025-029-033-037-039-041-043- 045-047-053-055-059-063-065-069-077-079-085-091-097-099-101-103- 105-107-113-115-117-121-125-127-090140- LA . LOUISIANA PARISHES INCLUDED ARE ACADIA ALLEN ASCENSION AVOYELLES BEAUREGARD CALCASIEU CALDWELL CAMERON CATAHOULA CONCORDIA EAST BATON ROUGE EAST FELICIANA EVANGELINE FRANKLIN GRANT IBERIA IBERVILLE JEFFERSON DAVIS LAFAYETTE LA SALLE LIVINGSTON MADISON NATCHITOCHES POINTE COUPEE RAPIDES SABINE ST. HELENA ST. LANDRY ST. MARTIN ST. MARY ST. TAMMANY TANGIPAHOA TENSAS VERMILION VERNON WASHINGTON WEST BATON ROUGE WEST FELICIANA WINN MSC001-005-021-029-031-035-037-045-049-061-063-065-067-073-077- 085-091-101-109-113-121-123-127-129-147-149-157-090140- MSRead more
SPC Public Severe Weather Outlook
Tue, 08 Mar 2011 18:41:02 -0600
PUBLIC SEVERE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0640 PM CST TUE MAR 08 2011 ...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE LOWER MISSISSIPPI VALLEY THIS EVENING AND OVERNIGHT... THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE DEVELOPMENT OF A FEW STRONG TORNADOES AND DAMAGING WINDS OVER PARTS OF THE LOWER MISSISSIPPI VALLEY THIS EVENING AND OVERNIGHT. CONDITIONS WILL BECOME INCREASINGLY FAVORABLE FOR TORNADOES TONIGHT...SOME OF WHICH MAY BE STRONG. TORNADOES DURING THE OVERNIGHT HOURS AT THIS TIME OF YEAR CAN BE PARTICULARLY DANGEROUS BECAUSE THEY ARE USUALLY FAST-MOVING AND OBSCURED BY RAIN AND DARKNESS. THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE MUCH OF LOUISIANA SOUTHERN MISSISSIPPI STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS TONIGHT. ..GUYER.. 03/09/2011 $$Read more
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