WWUS9 KMKC 200509
SEL3
MKC WW 200509
ALZ000-TNZ000-GAZ000-NCZ000-201100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 113
STORM PREDICTION CENTER NORMAN OK
1209 AM EST FRI MAR 20 1998

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   EASTERN ALABAMA
   EASTERN TENNESSEE
   NORTHERN AND WESTERN GEORGIA
   WESTERN NORTH CAROLINA

EFFECTIVE THIS FRIDAY MORNING FROM 1245 AM UNTIL 600 AM EST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 35 MILES SOUTHWEST OF AUBURN ALABAMA
TO 55 MILES NORTH NORTHEAST OF KNOXVILLE TENNESSEE.

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.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 112.  WATCH NUMBER 112 WILL NOT BE
IN EFFECT AFTER 45 AM EST.

DISCUSSION...SQUALL LINE WITH EMBEDDED BOW ECHOES AHEAD OF STRONG
UPPER TROF MOVING EWD ACROSS ERN TN SSWWD INTO CENTRAL AL.  WITH
STRONG MAINLY UNIDIRECTIONAL WIND FIELDS AND ADEQUATE
MOISTURE/INSTABILITY CONDITIONS REMAIN FAVORABLE FOR DAMAGING WINDS
WITH THE SQUALL LINE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 23040.


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WWUS8 KMKC 200752
WWAMKC
MKC WW-A 200752

STATUS REPORT ON WW NUMBER 113

THE THREAT OF SEVERE WEATHER CONTINUES TO THE EAST OF A LINE FROM
MGM TO 60 NNW TYS

SQUALL LINE CONTINUES TO ADVANCE EASTWARD AHEAD OF COLD FRONT INTO
THE CENTRAL AND SOUTHERN APPALACHIANS...SUPPORTED BY STRONG FORCING
PROVIDED BY UPSTREAM SHORT WAVE WHICH HAS TAKEN ON NEGATIVE TILT
OVER MISSISSIPPI PAST FEW HOURS.  INTENSE BOW ECHO ON NORTHERN
FRINGE OF SQUALL LINE APPEARS TO HAVE WEAKENED SOME...BUT CONTINUES
TO RACE NORTHEASTWARD AROUND 45 KT...AND MAY STILL PRODUCE DAMAGING
WIND GUSTS TO THE NORTHWEST AND NORTH OF KNOXVILLE NEXT HOUR OR TWO
BEFORE WEAKENING FURTHER IN MORE STABLE AIR MASS AROUND BRISTOL.

SOUTHWARD ALONG SQUALL LINE INTO ALABAMA EAST OF MONTGOMERY...RADAR
IMAGERY INDICATES PRESENCE OF SEVERAL BOWING SEGMENTS WITH ACTIVITY
MOVING ACROSS/TOWARD GEORGIA BORDER.  MODEL FORECAST SOUNDINGS
SUGGEST PRESENCE OF SURFACE BASED INVERSION OVER EAST CENTRAL
ALABAMA AND WESTERN GEORGIA...WHICH MAY CURRENTLY BE LIMITING
POTENTIAL FOR DAMAGING WIND GUSTS ACROSS THIS REGION.  HOWEVER...
PRESENCE OF 50+ KT LOW-LEVEL JET AND DRY MID-LEVEL AIR MASS
SUPPORTS POTENTIAL FOR DAMAGING WIND GUSTS...IN ADDITION TO LARGE
HAIL ASSOCIATED WITH CAPE OF 1500 J/KG ABOVE STABLE BOUNDARY LAYER.

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