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Thursday through Monday

By: NWS
By: NWS

THE EXTENDED PERIOD COMMENCES WITH THE MID/UPPER LEVEL TROUGH DIGGING WITH ITS AXIS THROUGH THE FLORIDA PANHANDLE. HOWEVER...BY FRIDAY...THE TROUGH LIFTS AND RETROGRADES WWD AS HIGH PRESSURE/ RIDGING BUILDS IN FROM THE EAST AND FLOW BECOMES MORE ZONAL. DURING THE LATTER PART OF THE EXTENDED PERIOD...RIDGING SHOULD BECOME MORE PROMINENT ACROSS THE SOUTHEAST WITH AN INCREASE IN UPPER HEIGHTS. E.G PER GFS 588DM HEIGHT LINE SHIFTS FROM S FL TO CNTRL GA THURS INTO SAT. AT THE SURFACE...THE QUASI-STATIONARY FRONT/TROUGH WILL BE SOUTH LOCAL COASTAL WATERS TO START THE PERIOD WITH DRY AIR FILTERING INTO CWA. HOWEVER WITH BUILDING UPPER RIDGE...FRONT LIFTS BACK TO FL COAST BY EARLY SUNDAY WITH LIGHT ONSHORE FLOW AND MOISTURE (HIGH PWATS) BEING PULLED NORTHWARD ACROSS OUR EASTERN AND THEN WESTERN ZONES. FRONT LINGERS UNTIL AT LEAST THRU MONDAY. WITH A WEAK STEERING FLOW...THE SHALLOW GULF SEABREEZE WILL LARGELY REMAIN OVER FL. EXPECT AOB WDLY SCT POP THURS-SAT NIGHT WITH A MODEST INCREASE TO SCT SUN AND MON WITH MODEST S (HIGHEST)-N (LOWEST) POP GRADIENT. IN WAKE OF FRONT...DRIER AIR WILL DROP MIN/MAX TEMPS SEVERAL DEGREES BELOW CLIMO (UPPER 60S AND NEAR 90 RESPECTIVELY) AND THEN WITH RETURNING FRONT RISING TO AROUND CLIMO BY SUN INTO MON.


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