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000
FXUS62 KTBW 241249
AFDTBW

Area Forecast Discussion
National Weather Service Tampa Bay Ruskin FL
749 AM EST Sun Jan 24 2021

.UPDATE...
Satellite imagery is showing a mix of low clouds and fog across
the area first thing this morning. For much of SWFL and up into
southern interior Sarasota County, conditions remained relatively
clear and calm overnight, allowing for the development of fog.
This has become dense in many spots, prompting the issuance of a
dense fog advisory for these areas through 9AM. Conditions have
remained less favorable near the coast for fog, although some
patches are not out of the question.

Around the Tampa Bay area, slightly drier air has been filtering
in, and wind speeds have been a knot or two faster. This has
helped keep the surface well-mixed enough to support low clouds
rather than fog. A similar story has played out across nearshore
coastal waters, prompting the early cancellation of the dense fog
advisory for nearshore zones.

Fog and low clouds are expected to continue through mid-morning,
with conditions beginning to improve around 9AM. Continued
daytime heating and increasing wind speeds should erode the low
clouds, leading to a warm and mostly sunny afternoon. This will
once more make a favorable setup for fog tonight and tomorrow,
especially as winds begin to shift back towards a SE direction,
helping to advect more moisture back into the area. The forecast
has been adjusted slightly to better capture where fog has been
occurring and where the low clouds are developing, but otherwise
remains on track for the rest of the day.

&&

.AVIATION...
Fog continues to creep into southern sites while low clouds
remain an issue for northern sites. Generally IFR conditions are
expected to be prevalent for the next couple hours before
increasing wind speeds and daytime heating start to improve
conditions back to MVFR, then VFR, later today. Conditions are
once again favorable tonight for the development of fog, but there
is still uncertainty into just how much this will effect area
terminals.

&&

.MARINE...
Satellite observations continue to show some areas of sea fog
offshore. However, areas near the immediate coast have not been
favored for this to occur. Nevertheless, mariners should be on the
lookout for patchy sea fog that may become dense at times. The
next couple nights will remain favorable for sea fog to develop,
reducing visibilities to less than 1/2 mile at times. Outside of
fog, winds and seas remain light through mid-week, keeping boating
conditions otherwise pleasant.

&&

.Preliminary Point Temps/PoPs...
TPA  77  64  79  64 /   0   0   0   0
FMY  81  62  81  64 /   0   0   0   0
GIF  78  63  82  62 /  10   0   0   0
SRQ  78  63  78  64 /   0   0   0   0
BKV  76  60  81  60 /   0   0   0   0
SPG  74  64  75  65 /   0   0   0   0

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...Dense Fog Advisory until 9 AM EST this morning for DeSoto-Inland
     Charlotte-Inland Lee-Inland Sarasota.

Gulf waters...Dense Fog Advisory until 9 AM EST this morning for Waters from
     Bonita Beach to Englewood FL out 20 to 60 NM-Waters from
     Englewood to Tarpon Springs FL out 20 to 60 NM.

&&

$$

Flannery