Area Forecast Discussion
Issued by NWS Miami, FL

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FXUS62 KMFL 262004

Area Forecast Discussion
National Weather Service Miami FL
404 PM EDT Wed Apr 26 2017

Broad high pressure over the Atlantic will keep southeasterly flow
this afternoon and continue through the end of the week. This will
allow some moisture in the periphery of the Atlantic high to push
over the region today which could enhance isolated showers this
afternoon as a mid-level trough pushes across South Florida. Best
chance of some showers to development remains over western portion
of the east coast metro and over the Everglades. Tonight will be
another good night for radiational cooling along the west and
interior allowing favorable conditions for patchy to areas of fog
to develop closer to midnight into early Thursday morning. Low
temperatures tonight will be a few degrees warmer ranging from the
mid to upper 60s west and low to mid 70s along the east coast

Elongated trough along the eastern portion of the CONUS will keep
southerly flow through the end of the weekend. This will keep
breezy conditions through the weekend across South Florida with a
low chance of a few showers. Ridge will develop over the western
Atlantic returning southeast flow over the region with warm and
humid conditions remaining in place. Lingering moisture will move
into the area enhancing a few showers mainly along the east coast
metro areas. High temperatures will return to the low 90s interior
and mid to upper 80s along the coastal areas. POPs have been kept
below 20 for now as coverage is expected to remain isolated.

A powerful shortwave trough will travel through the Central
Plains into the Great Lakes early next week driving the next front
closer to South Florida, but this is near the end of the 7 day
forecast so for now the forecast only indicates chance POPs with a
slight chance of thunder.


Light southeasterly flow is expected across the waters over the
next several days with the potential for showers. Seas should
remain below headline criteria through the most of the week save
for some overnight wind surges possible in the Atlantic.


Scattered/broken cloud layer 040-060 kft will prevail over most
of South Florida through about 00z-01z as SE/S low level flow
converges over the area. Isolated to scattered showers are
expected to develop and move N-NE through the afternoon, affecting
primarily vicinity FLL and MIA area terminals. Activity not
expected to be more than showers and any lower ceilings and
visibility impacts at terminals expected to be brief, with VFR the
prevailing condition. After sea-breeze dictated winds this
afternoon, light SE wind overnight, then increasing out of 150-170
degrees to near 15 knots with gusts approaching 20 knots after
14z Thursday. Slightly higher chance of fog over interior South
Florida overnight, but likely not directly affecting terminals.


Fire Weather...
While today is not expected to be as dry as previous days, there
remains a chance for a few hours of relative humidity values
nearing the critical 40 percent threshold over portions of
interior Southwest Florida including in Glades, Hendry, and inland
Collier County. Drier conditions are expected Thursday and
Friday mainly over Hendry and Glades county where conditions could
be critical. A short-fused Red Flag Warning may become necessary
if observed trends during the morning and afternoon hours skew
drier or windier than forecast.


West Palm Beach  74  89  75  87 /  30  10  10  10
Fort Lauderdale  76  89  78  89 /  10  10  10  10
Miami            76  89  77  88 /  10  10  10  10
Naples           71  88  73  92 /   0   0  10  10



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