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000 
FXUS62 KMFL 211937
AFDMFL

Area Forecast Discussion
National Weather Service Miami FL
337 PM EDT Tue Aug 21 2018

.DISCUSSION...
Today-tonight: A somewhat drier airmass has moved into South 
Florida today, and this has limited showers and thunderstorms. I 
limited PoPs to 30 percent for the remainder of the afternoon for 
the highest values anywhere in South Florida, which is confined 
mainly to interior and western areas. PoPs generally range from 5 
to 20 across east coast metro areas for the remainder of the 
afternoon.

Wednesday-Thursday night: High pressure will gradually shift 
eastward tomorrow and Thursday. As the high shifts eastward, a
strong upper-trough moves into the eastern U.S. This will lead to
light southeast to south wind flow. Deeper tropical moisture will
return to south FL. The light winds will allow for sea breeze 
development on both coasts. Expect showers and storms to develop 
along the sea breezes during the midday hours, becoming more 
numerous over interior to interior-west areas during the 
afternoons.

Friday-Monday: Western Atlantic high will build back into the 
region returning easterly flow across S Florida by late Friday or
Saturday, lasting through the weekend and into early next week. 
Lingering moisture in the region will allow for showers and 
thunderstorms streaming across the area through the end of the 
extended period.

&&

.MARINE...
An upper trough will push the high pressure east veering winds s 
to southeast mid week. The increase in moisture content will 
enhance showers/thunderstorms through the end of the week. This 
weekend, high pressure builds back across the peninsula shifting 
winds back to easterly flow. This will allow a few gusty winds 
between 15 to 20 knots in the afternoon hrs. Seas will be up to 3
feet at times this weekend into early next week over portions of
the Atlantic waters. Showers and thunderstorms are also possible 
and capable of producing strong wind gusts, locally higher seas, 
heavy rain, and lightning.


&&

.BEACH FORECAST...
A beach hazards statement is in effect for Collier County beaches
through Thursday evening due to Florida Red Tide, which may lead
to respiratory irritation.

&&

.PRELIMINARY POINT TEMPS/POPS...
West Palm Beach  76  90  76  90 /  10  30  20  40 
Fort Lauderdale  80  89  79  90 /  10  30  20  40 
Miami            78  90  77  90 /  20  40  20  40 
Naples           77  90  77  90 /  30  40  30  40 

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...Beach Hazards Statement through Thursday evening for FLZ069.

AM...None.
GM...None.
&&

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