SEVERE WARNINGS, DISCUSSIONS, AND WATCHES

Severe Thunderstorm Warning BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1005 PM EDT THU APR 5 2012 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL BARTOW COUNTY IN NORTHWEST GEORGIA FLOYD COUNTY IN NORTHWEST GEORGIA * UNTIL 1045 PM EDT * AT 1003 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL. THIS STORM WAS LOCATED NEAR ROME...MOVING SOUTHEAST AT 20 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHANNON AND KINGSTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX. __________________________________________________________________________________ Mesoscale Discussion 467

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MESOSCALE DISCUSSION 0467 NWS STORM PREDICTION CENTER NORMAN OK 0754 PM CDT THU APR 05 2012 AREAS AFFECTED...ERN AL...FAR WRN GA...WRN FL PANHANDLE CONCERNING...SEVERE THUNDERSTORM WATCH 149... VALID 060054Z - 060230Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 149 CONTINUES. THE SEVERE THREAT SHOULD CONTINUE ACROSS WW 149 THIS EVENING WHERE LARGE HAIL AND WIND DAMAGE WILL BE POSSIBLE. THE THREAT SHOULD DEVELOP SEWD WITH TIME AND MAY AFFECT SE AL AND SW GA LATER THIS EVENING. A BROKEN LINE OF STRONG TO SEVERE THUNDERSTORMS IS ONGOING IN ECNTRL AL LOCATED JUST AHEAD OF A COLD FRONT. SFC DEWPOINTS AHEAD OF THE FRONT ARE IN THE UPPER 50S F AND LOWER 60S F WITH MLCAPE ESTIMATED IN THE 500 TO 1000 J/KG RANGE. IN ADDITION...MESOANALYSIS SHOWS A WELL-DEFINED 55 TO 70 KT MID-LEVEL JET NOSING INTO THE REGION FROM THE WEST. THIS IS CREATING A STRONGLY SHEARED ENVIRONMENT WITH THE BIRMINGHAM 00Z SOUNDING SHOWING 60 KT OF 0-6 KM SHEAR. THIS ENVIRONMENT SHOULD BE SUFFICIENT FOR SUPERCELLS WITH LARGE HAIL. THE WIND DAMAGE THREAT MAY INCREASE ESPECIALLY IF CURRENT RADAR TRENDS PERSIST WHICH SHOW A LINE COULD BE DEVELOPING IN CNTRL AL. AS THE STORMS APPROACH THE AL-GA STATE-LINE...SOME WEAKENING MAY OCCUR DUE TO A SHARP DROP OFF IN INSTABILITY. ..BROYLES.. 04/06/2012 ATTN...WFO...FFC...TAE...BMX...MOB... _____________________________________________________________________________________________ Severe Thunderstorm Watch 149 < Previous WW Public (Test) | Counties | Probabilities | Aviation | Warnings | Initial RADAR | Related MD Hazard Tornadoes EF2+ Tornadoes Likelihood Low Very Low Severe Wind 65 kt+ Wind Low Low Severe Hail 2"+ Hail Moderate Low SEL9 URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 149 NWS STORM PREDICTION CENTER NORMAN OK 615 PM CDT THU APR 5 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND EASTERN ALABAMA EFFECTIVE THIS THURSDAY NIGHT FROM 615 PM UNTIL MIDNIGHT 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 55 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES WEST NORTHWEST OF GADSDEN ALABAMA TO 30 MILES EAST SOUTHEAST OF MONTGOMERY ALABAMA. 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 146...WW 147...WW 148... DISCUSSION...STORMS HAVE INCREASED IN BOTH COVERAGE AND INTENSITY AS COMPACT MID/UPPER LOW AND ASSOCIATED VORT CENTER DEVELOP SEWD ACROSS TN VALLEY THIS EVENING. STEEPENING MID-LEVEL LAPSE RATES AND STRENGTHENING FLOW FIELDS....IN CONCERT WITH ENHANCED DPVA SHOULD COMPENSATE FOR LACK OF STRONGER CONVECTIVE INSTABILITY TO SUSTAIN A FEW STOUT UPDRAFTS MOSTLY CAPABLE OF LARGE HAIL. SOME TENDENCY TOWARD SMALL-SCALE LINEAR DEVELOPMENT ALSO SUGGESTS SOME INCREASE IN LOCALLY STRONG WINDS AS CONVECTION BECOMES PREFERENTIALLY ALIGNED WITH 65KT MID LEVEL JET STREAK MOVING INTO THE AREA. 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 350. MEAN STORM MOTION VECTOR 27030. _____________________________________________________________________________________________