URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 130
NWS STORM PREDICTION CENTER NORMAN OK
350 PM CDT MON APR 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
PORTIONS OF CENTRAL AND NORTHERN ARKANSAS
PARTS OF SOUTHERN AND EASTERN OKLAHOMA
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1100 PM CDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF
MCALESTER OKLAHOMA TO 50 MILES NORTHEAST OF PINE BLUFF ARKANSAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 126...WW 127...WW
128...WW 129...
DISCUSSION...AN ARCING WEST-TO-EAST LINE OF STRONG/LOCALLY SEVERE
STORMS CONTINUES MOVING NWD ACROSS THE RED RIVER VALLEY AND SRN AR
ATTM...AND WILL AFFECT SERN OK AND ADDITIONAL PORTIONS OF SRN AND
CENTRAL AR OVER THE NEXT SEVERAL HOURS. WITH A VERY UNSTABLE
ENVIRONMENT IN PLACE TO SUPPORT CONTINUATION OF THE
ONGOING/ORGANIZED CONVECTION...NWD SHIFT OF THE AREAL THREAT FOR
LOCALLY DAMAGING WINDS AND HAIL WILL CONTINUE.
AVIATION...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 500. MEAN STORM
MOTION VECTOR 18035.
_________________________________________________________________________________
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 129
NWS STORM PREDICTION CENTER NORMAN OK
340 PM CDT MON APR 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHWEST KANSAS
WESTERN OKLAHOMA
NORTHWEST TEXAS INCLUDING THE EASTERN PANHANDLE
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1100 PM CDT.
HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH
NORTHEAST OF DODGE CITY KANSAS TO 60 MILES WEST SOUTHWEST OF
MINERAL WELLS TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 126...WW 127...WW 128...
DISCUSSION...TSTM DEVELOPMENT IS ANTICIPATED WITHIN THE NEXT HOUR OR
TWO ALONG STATIONARY FRONT OVER SWRN KS INTO THE NRN TX PNHDL...AS
WELL AS ALONG DRYLINE INTO W-CNTRL TX. AMBIENT AIR MASS HAS BECOME
STRONGLY UNSTABLE THIS AFTERNOON WITH MLCAPE APPROACHING 3000-3500
J/KG WHICH WILL SUPPORT INTENSE STORM DEVELOPMENT. AREA
VAD/PROFILER DATA AND MODEL FORECAST HODOGRAPHS INDICATE THAT
VERTICAL SHEAR /BOTH IN THE LOW LEVELS AND THROUGH A DEEP LAYER/ IS
MARGINALLY SUPPORTIVE OF SUPERCELLS. WHEN COUPLED WITH RATHER LARGE
TEMPERATURE-DEWPOINT SPREADS...THE EXPECTATION IS THAT VERY LARGE
HAIL AND DAMAGING WIND GUSTS WILL BE THE PRIMARY HAZARDS.
BY 03/00-03Z...BOTH LOW AND DEEP-LAYER SHEAR ARE FORECAST TO
STRENGTHEN...AND THE POTENTIAL FOR TORNADOES WILL INCREASE WITH
STORMS THAT REMAIN MORE DISCRETE. THUS...CONDITIONS WILL BE
MONITORED FOR A POSSIBLE UPGRADE TO A TORNADO WATCH LATER THIS
EVENING.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 20025.
____________________________________________________________________________________________
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 128
NWS STORM PREDICTION CENTER NORMAN OK
1250 PM CDT MON APR 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
FAR SOUTHEAST ARKANSAS
EASTERN LOUISIANA
SOUTHWEST AND WEST-CENTRAL MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1250 PM UNTIL
800 PM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH
NORTHEAST OF MONROE LOUISIANA TO 55 MILES SOUTH SOUTHEAST OF
SLIDELL LOUISIANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 126...WW 127...
DISCUSSION...BOWING MCS OVER LA IS IN THE PROCESS OF INTENSIFYING
THIS AFTERNOON AS IT ENCOUNTERS A MOIST AND MODERATE-STRONGLY
UNSTABLE AIR MASS WITH MLCAPE OF 2000-3000 J/KG. MID AND HIGH-LEVEL
WIND FIELD WILL REMAIN RATHER WEAK...BUT THE COMBINATION OF A
VIGOROUS COLD POOL AND 50+ KT REAR-INFLOW JET /PER LCH VAD/ WILL
CONTINUE TO ENHANCE UPDRAFT GROWTH ON LEADING EDGE OF GUST FRONT.
DAMAGING WINDS WILL BE THE PRIMARY HAZARD...THOUGH SEVERE HAIL IS
ALSO POSSIBLE.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 24035.
_________________________________________________________________________________
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 127
NWS STORM PREDICTION CENTER NORMAN OK
1245 PM CDT MON APR 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN ARKANSAS
NORTHERN LOUISIANA
SOUTHEAST OKLAHOMA
NORTHEAST TEXAS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL
700 PM CDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST
SOUTHWEST OF PARIS TEXAS TO 50 MILES EAST OF EL DORADO ARKANSAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 126...
DISCUSSION...WELL-ORGANIZED MCS CONTINUES MOVING NWD ACROSS NERN TX
AND NWRN LA...WITH SOME NEW STORM DEVELOPMENT NOW OCCURRING ON THE
WRN FRINGE OF THE BOWING LINE IN NERN TX. GIVEN THE DEGREE OF
OBSERVED CONVECTIVE ORGANIZATION COMBINED WITH ADDITIONAL AIRMASS
HEATING/DESTABILIZATION AHEAD OF THE CONVECTION WITH TIME...EXPECT
THE STORMS TO CONTINUE PROGRESSING NWD THIS AFTERNOON -- ALONG WITH
ACCOMPANYING THREAT FOR LOCALLY DAMAGING WINDS AND HAIL.
AVIATION...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 500. MEAN STORM
MOTION VECTOR 18035.
_________________________________________________________________________________
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 126
NWS STORM PREDICTION CENTER NORMAN OK
1010 AM CDT MON APR 2 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
LOUISIANA
EASTERN TEXAS
COASTAL WATERS
EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1010 AM UNTIL
500 PM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST
NORTHWEST OF SHREVEPORT LOUISIANA TO 30 MILES SOUTHEAST OF
INTRACOASTAL CITY LOUISIANA. FOR A COMPLETE DEPICTION OF THE
WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
DISCUSSION...BOWING MCS WITH A WELL-ESTABLISHED COLD POOL AND 40-45
KT REAR-INFLOW JET WILL LIKELY INTENSIFY TODAY AS SYSTEM ENCOUNTERS
A MOIST AND MODERATE TO STRONGLY UNSTABLE AIR MASS...PER 12Z LCH
SOUNDING. THE PRIMARY HAZARD WILL BE DAMAGING WIND GUSTS...THOUGH
SEVERE HAIL IS POSSIBLE GIVEN THE STEEP MIDLEVEL LAPSE RATES.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 24030.
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