Severe Thunderstorm Warning 116, NWS Birmingham, AL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM, AL
322 PM CST FRI MAR 10 2000

STNRY FRONT CONTINUES ACROSS MID TN AND NRN MS TO A LOW OVER NE LA
WITH VERY MOIST UNSTABLE AIR STREAMING NWD AHD OF IT.  BEST MOISTURE
CONVERGENCE CURRENTLY OVER NRN MS EXPECTED TO SHIFT TO N AL TNGT.
SRONG UVV WITH APPROACHING S/W WILL MAX OUT OVER N AND CENTRAL AL
AROUND MIDNIGHT AND WOULD EXPECT TO SEE A DIMINISHING TREND IN STORM
INTENSITIES AS IT KICKS OUT AFTER MIDNIGHT.  CHANCE OF SEVERE WX
TONIGHT AND ALSO A RISK OF HEAVY RAIN AND LOCAL FLOODING.

THERE IS A RISK OF SEVERE WEATHER REDEVLOPING DURING THE DAY
SATURDAY...MAINLY OVER THE SE PART OF THE CWA...AS THE COLD FRONT
APPROACHES. FRONT WILL MOVE LITTLE TONIGHT...JUST EDGING INTO NW AL
BY MORNING...THEN START TO ACCELLERATE SAT AS THE SURFACE LOW MOVES
UP THE APALACHIANS. WITH MAIN UPPER TROUGH LAGGING BACK TO THE WEST
UNTIL SAT AFTERNOON...LOOK FOR OVERRUNNING PRECIP TO CONTINUE FOR
SOME DISTANCE INTO THE COLD AIR. RISK OF A FREEZE SAT NIGHT...BUT
RIGHT NOW BELIEVE SURFACE AND LOW LEVEL WINDS WILL HOLD UP ENOUGH TO
KEEP TEMPS JUST ABOVE FREEZING.  PLUS CLOUDS MAY LINGER...ESPECIALLY
TN VLY...UNTIL LAT5E SAT NIGHT.  MAYBE MORE OF A THREAT OF A FREEZE
SUNDAY NIGHT.

HSV WU 055/058 033/052 031 981
BHM TU 059/064 034/057 031 981
MGM TU 062/074 037/058 034 5+1

.BHM...111000.

07

NNNN

PRELIMINARY LOCAL STORM REPORT...CORRECTED EVENT TIME
NATIONAL WEATHER SERVICE BIRMINGHAM,AL
1153 AM CST FRI MAR 10 2000

TIME(CST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

853 AM     BESSEMER                  AL   1.75 INCH HAIL
03/10/00   JEFFERSON

1153 AM    ADDISON                   AL   1.00 INCH HAIL
03/10/00   WINSTON

GM

E

ALZ001>038-040>050-102100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
223 PM CST FRI MAR 10 2000

HAZARDOUS WEATHER OUTLOOK FOR NORTH AND CENTRAL ALABAMA.

...SEVERE THUNDERSTORMS POSSIBLE THROUGH SATURDAY MORNING...

THE AIRMASS OVER ALABAMA WILL REMAIN MOIST AND UNSTABLE THROUGH
THE REST OF THE AFTERNOON AND INTO TONIGHT.  SCATTERED THUNDERSTORMS
WILL CONTINUE DEVELOP OVER MOST OF THE AREA.  A FEW OF THESE
STORMS MAY BECOME LOCALLY SEVERE THROUGH THE AFTERNOON AND INTO THE
EVENING.  THE MAIN THREAT SHOULD BE LARGE HAIL AND DAMAGING WINDS.

A COLD FRONT...AND UPPER LEVEL STORM SYSTEM WILL MOVE ACROSS THE
STATE LATE TONIGHT AND INTO SATURDAY.  NUMEROUS STRONG THUNDERSTORMS
ARE LIKELY TO DEVELOP WEST OF ALABAMA THIS EVENING....AND STATEWIDE
THROUGH THE NIGHT.  THE THREAT OF SEVERE WEATHER WILL BE FROM THIS
AFTERNOON THROUGH THE NIGHTTIME HOURS.  THE BRUNT OF THE SEVERE
WEATHER SHOULD OCCUR AS A LINE OF THUNDERSTORMS MOVES ACROSS THE AREA
LATER TONIGHT. THE SEVERE WEATHER POTENTIAL WILL CONTINUE INTO THE
MORNING HOURS SATURDAY ACROSS EASTERN PARTS OF ALABAMA.

THE MAIN SEVERE THREAT WILL BE STRAIGHT LINE WINDS AND LARGE HAIL.
HOWEVER...UPPER LEVEL WIND FORECASTS SUGGEST THE POTENTIAL FOR
ISOLATED TORNADOES LATER TONIGHT...AND EARLY SATURDAY.

IN ADDITION...RAINFALL OF ONE TO TWO INCHES HAS OCCURRED ACROSS PARTS
OF CENTRAL ALABAMA TODAY.  ADDITIONAL HEAVY RAINFALL IS EXPECTED
THROUGH THE NIGHT.  THIS MAY PRODUCE FLOODING ACROSS PARTS OF
CENTRAL ALABAMA.  MAIN THREAT WILL BE TO LOW LYING...POOR DRAINAGE
AREAS...AND SOME FLASHY CREEKS.

SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS WESTERN ALABAMA
SHOULD BE ACTIVATED.  ACROSS THE EASTERN HALF SHOULD MONITOR THE
LATEST WEATHER INFORMATION AND PREPARE FOR ACTIVATION THIS
EVENING.  YOU SHOULD PREPARE FOR THE SEVERE WEATHER TO CONTINUE INTO
THE EARLY MORNING HOURS SATURDAY.