National Weather Service Forecast for Lawrenceville and Gwinnett County

Lat: 33.96N, Lon: 83.99W Wx Zone: GAZ034

Zone Forecast | Pinpoint Weekly Forecast | Today's Hourly Forecast | Forecast Discussion
Watches & Warnings | Special Weather Statements | Georgia Storm Reports | North Georgia Drought

Area Forecast Discussion

000
FXUS62 KFFC 230943
AFDFFC

AREA FORECAST DISCUSSION...UPDATED FOR AVIATION
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
540 AM EDT WED JUL 23 2008

.SHORT TERM /TODAY THROUGH FRIDAY/...
SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...
CURRENT SATELLITE LOOP SHOWS LARGE MOISTURE PLUMB EXTENDING FROM THE
NEW ENGLAND STATES DOWN TO HURRICANE DOLLY JUST OFF THE SOUTHERN TX
COAST. THERE IS ALSO A SHORTWAVE LOCATED ALONG THE AL/MS/TN BORDERS
MOVING SE. THIS WAVE IS EXPECTED TO CONTINUE MOVING SE AS IT IS
BEING PUSHED BY THE MAIN FRONT NOW EXTENDING FROM SOUTHERN OHIO TO
NEBRASKA. THIS SHORTWAVE WILL BRING ANOTHER ROUND OF AFTERNOON AND
EVENING SHOWERS AND THUNDERSTORMS TO GEORGIA TODAY. EXPECT
THUNDERSTORM ACTIVITY TO DEVELOP MAINLY ACROSS CENTRAL AND SOUTHERN
SECTIONS BUT THERE WILL BE SOME SCATTERED STORMS NORTH. THIS LOOKS
TO BE ANOTHER ISOLATED SEVERE DAY SIMILAR TO YESTERDAY WITH STRONG
GUSTY WINDS...FREQUENT LIGHTNING...AND LARGE HAIL. THE MAIN COLD
FRONT WILL MOVE SOUTHWARD TODAY AND MOVE INTO N GA BY 06Z THU. THIS
FRONT IS VERY WELL ORGANIZED FOR THIS TIME OF YEAR SO IT SHOULD
SWEEP THROUGH THE AREA BEFORE STALLING SOMEWHERE ACROSS S GA/N FL
THU EVENING. HIGH PRESSURE BUILD IN BEHIND THE FRONT FRI BUT IT WILL
BE VERY WEAK AS ANOTHER SHORTWAVE MOVES IN TO N GA FRI NIGHT. WENT
VERY CLOSE TO MOS GUIDANCE WITH TEMPS IN THE SHORT TERM AS IT LOOKS
LIKE THEY HAVE PICKED UP ON THE EXPECTED CLOUD COVER OVER THE STATE
TODAY AND THE FRONT SWEEPING THROUGH FOR THU.

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
PATTERN LOOKS TO REMAIN CONSISTENT THROUGH THE EXTENDED PERIOD. THE
MODELS SHOWS A FRONT STALLING ACROSS GA SAT AND THEN ANOTHER ONE
MOVES INTO THE AREA TUE. COMBINE THIS WITH ACTIVE NW FLOW ALOFT AND
WILL KEEP A CHANCE OF AFTERNOON AND EVENING SHOWERS AND
THUNDERSTORMS EACH DAY THROUGH THE EXTENDED. NORTHWEST FLOW WILL
KEEP TEMPERATURES NEAR SEASONAL NORMS AS WELL.

01

&&

.AVIATION...
MIX OF MVFR/VFR VISIBILITIES AT THE LOCAL TERMINALS EARLY THIS
MORNING WITH MOST SITES IN THE 5-7SM RANGE. MAY SEE THESE DIP A BIT
LOWER UNTIL SHORTLY AFTER SUNRISE...THOUGH ITS LOOKING INCREASINGLY
LIKELY ATL WILL REMAIN VFR 6-7SM WITH MANY OTHER SITES HITTING 3-5SM
BRIEFLY EARLY THIS MORNING. THUNDERSTORMS SHOULD REDEVELOP EARLIER
THAN YESTERDAY AND CLOSER INITIALLY TO ATL/AHN AS SFC TROUGH IS JUST
NW OF THE INTERSTATE 85 CORRIDOR FROM THE CAROLINAS INTO N GA...WITH
INITIAL THUNDER AROUND ATL BETWEEN 16-18Z. ACTIVITY EXPECTED TO WIND
DOWN EARLIEST NORTH...BUT REMAINING NEAR TO THE SOUTH OF ATL THROUGH
MUCH OF THE EVENING. WINDS SHOULD BE FROM THE WEST AND LIGHT (~10KT
OR LESS) THROUGH THE FORECAST PERIOD...OUTSIDE OF THUNDERSTORMS
WHICH MAY AGAIN GENERATE LOCALLY STRONG WINDS AND CIGS BELOW THE
PREVAILING CU AT 4-5KFT.

RRH

&&

.PRELIMINARY POINT TEMPS/POPS...
ATHENS          91  66  91  68  93 /  60  40  20  10  20
ATLANTA         88  68  90  70  89 /  60  30  20  10  20
BLAIRSVILLE     85  61  89  62  89 /  60  30  10  10  20
CARTERSVILLE    89  64  88  65  91 /  60  30  10  10  20
COLUMBUS        89  72  92  71  94 /  70  40  20  10  20
GAINESVILLE     89  67  89  69  90 /  60  40  10  10  20
MACON           92  71  93  71  95 /  60  40  20  10  20
ROME            88  66  91  67  94 /  60  30  10  10  20
PEACHTREE CITY  88  65  90  66  90 /  60  30  20  10  20
VIDALIA         92  72  92  71  94 /  60  50  20  20  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

Important Note: Never make important decisions based on this information or any weather information
obtained from the Internet. Find out why.