Severe Thunderstorm Warning 328, NWS Atlanta, GA

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
545 AM EDT SUN JUL 13 2003

UPPER TROUGH LOOKS TO HOLD OVER EASTERN U.S. THROUGH SHORT TERM
PERIOD...BUT BEGINS TO SHIFT EAST TUESDAY AS UPPER RIDGE BUILDS IN
FROM THE WEST. FRONTAL BOUNDARY MEANDERING ACROSS TENNESSEE VALLEY
PROGGED TO DRIFT SOUTHWARD TODAY...NEARING GEORGIA-TENNESSEE BORDER
TOWARD THE END OF THE DAY. SCATTERED TSTORMS (SOME PRODUCING VERY
HEAVY RAIN) CURRENTLY OVER NORTH GEORGIA EARLY THIS MORNING SHOWING
NO SIGNS OF DYING AND LOOK FOR GOOD DEVELOPMENT OVER REST OF COUNTY
WARNING THIS AFTERNOON. PLAN TO USE GOOD CHANCE POPS ALL AREAS TODAY
INTO THIS EVENING... THEN CUTTING POPS BACK TO 30 PERCENT AFTER
MIDNIGHT AS BOUNDARY BEGINS TO DRIFT BACK TO THE NORTH. CURRENT
FORECAST TREND WITH CHANCE OF SHOWERS/TSTORMS MONDAY THROUGH FRIDAY
STILL LOOK OKAY...BUT LATEST AVIATION MODEL RUN HINTING AT SOME
DRIER AIR ADVECTING INTO NORTH SECTS AFTER TODAY...WITH BEST CHANCE
FOR PRECIP ACROSS CENTRAL SECTS.

PRELIMINARY POINT TEMPS/POPS...
KATL 86 69 85 69 / 50 50 40 30
KAHN 86 68 86 68 / 50 50 40 30
KGVL 85 67 84 68 / 50 50 40 30
KRMG 87 68 87 68 / 50 50 40 20
KCSG 89 72 89 69 / 50 50 40 30
KMCN 89 71 88 69 / 50 50 40 30

.ATL WATCHES/WARNINGS/ADVISORIES...
GA...NONE.

AVIATION DISCUSSION...
WILL KEEP ATL TAF VFR UNLESS EVIDENCE SAYS OTHERWISE. CONVECTION TO
THE N HAS HELD CEILINGS UP AND APPEARS THIS WILL CONTINUE THIS
MORNING. THIS CONVECTION MAY CAUSE PROBLEMS AT ATL AND THIS WILL
NEED TO BE WATCHED. CONVECTION EXPECTED LATER TODAY. SURFACE WINDS
LOOK TO GO TO THE EAST SIDE OF SOUTH LATE TODAY. BDL

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-131600-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
600 AM EDT SUN JUL 13 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY.

ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY.

.SYNOPSIS...
A STATIONARY FRONT OVER TENNESSEE AND THE SOUTH APPALACHIANS WILL
DRIFT INTO NORTH GEORGIA THROUGH TONIGHT. A TROUGH OF LOW PRESSURE
ACROSS NORTH GEORGIA WILL WEAKEN TODAY.

.PRIMARY HAZARD...
THE PRIMARY HAZARD FROM SEVERE THUNDERSTORMS WILL BE DAMAGING WINDS
AND LARGE HAIL. FREQUENT LIGHTNING AND HEAVY RAIN CAN ALSO BE
EXPECTED. THE BEST TIME FOR SEVERE WEATHER WILL BE THIS AFTERNOON
AND EVENING.

.DISCUSSION...
A MOIST AIRMASS WILL CONTINUE OVER THE AREA. CAPES OF 500 TO 1500
CAN BE EXPECTED...ALONG WITH LIFTED INDICES OF MINUS 2 TO MINUS 6.
ALSO...WEAK UPPER LEVEL ENERGY WILL MOVE ACROSS THE AREA AND DEEPEN
AN UPPER LEVEL TROUGH OF LOW PRESSURE. THIS WILL AID THUNDERSTORM
DEVELOPMENT.

.FOR SPOTTERS...
SPOTTERS SHOULD REMAIN ALERT IN CASE ACTIVATION IS NEEDED.

.OTHER HAZARDS...
HEAVY RAIN AND SOME FLOODING MAY ALSO OCCUR.

.DAY TWO THROUGH DAY SEVEN...MONDAY THROUGH SATURDAY.
THERE WILL BE A CHANCE OF THUNDERSTORMS EACH DAY.

FOR THE GRAPHICAL HAZARDOUS WEATHER OUTLOOK AND OTHER WEATHER
INFORMATION...PLEASE VISIT OUR WEBSITE AT WEATHER.GOV...AND CLICK ON
GEORGIA.

BDL