

000 

WWUS20 KWNS 151204

SEL8

SPC WW 151204

ALZ000-151500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 118

NWS STORM PREDICTION CENTER NORMAN OK

705 AM CDT SAT MAR 15 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN ALABAMA



EFFECTIVE THIS SATURDAY MORNING FROM 705 AM UNTIL 1000 AM CDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES EITHER SIDE OF A LINE FROM 30 MILES SOUTH SOUTHWEST

OF MUSCLE SHOALS ALABAMA TO 40 MILES NORTHEAST OF GADSDEN

ALABAMA.  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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 116. WATCH NUMBER 116 WILL NOT

BE IN EFFECT AFTER 705 AM CDT. CONTINUE...WW 115...



DISCUSSION...ANOTHER ROUND OF INTENSE STORMS WILL TRACK RAPIDLY EAST

ACROSS NRN AL THIS MORNING. THIS CONVECTION IS TIED TO LARGER SCALE

MID LEVEL JET STREAK AND DEVELOPING CYCLONE ACROSS THE LOWER MS

VALLEY ATTM. CONTINUED INFLUX OF LOW LEVEL MOISTURE AND LIFT ALONG

STRENGTHENING WARM FRONT SHOULD SUSTAIN THESE STORMS WITHIN STRONGLY

SHEARED FLOW REGIME. WIND DAMAGE AND HAIL WILL BE THE PRIMARY

HAZARDS AS BULK OF THIS REGION CURRENTLY REMAINS NORTH OF THE WARM

FRONT. HOWEVER... TRAILING OUTFLOW FROM THIS ACTIVITY WILL NEED TO

BE MONITORED FOR ADDITIONAL NEAR SURFACE-BASED STORM/SUPERCELL

DEVELOPMENT LATER THIS MORNING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM

MOTION VECTOR 26055.





...CARBIN

