Area Forecast Discussion
Issued by NWS
FXUS62 KTAE 241534
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1134 AM EDT Wed Sep 24 2014
.Near Term [Through Today]...
An upper level low sits over the Carolinas today as high pressure is
at the sfc over the southeast. High pressure will bring
northeasterly winds with cooler drier air. With a tighter pressure
gradient today winds will be gusty at times with max gusts of 20 mph
expected. Cloud cover could linger throughout the day in parts of
southwest GA. Highs will be in the low 80s this afternoon.
[Through 12Z Thursday]...
Ceilings are expected to scatter out by afternoon with the exception
of perhaps VLD and ABY. Northeast winds will be gusting to around
15-20 kts in the afternoon.
.Prev Discussion [235 AM EDT]...
.Short Term [Tonight Through Friday]...
The aforementioned upper low will open up into the longwave
pattern after it is scooped up by a shortwave forecast to move
into the Upper Midwest through Thursday. Deep layer ridging will
build west from the western Atlantic to replace the departing low.
With the upper low, departs the surface trough that has plagued
the southeastern U.S. coastline. In its wake, high pressure will
dominate, placing the Tri-State region under a more moist easterly
flow regime by Friday. Expect most shower activity to remain
offshore in the Gulf on Thursday, with our next best chance for
rain over land areas coming on Friday. The greatest rain chances
will be along and east of a line from Albany to Tallahassee (or
the eastern half of the region).
.Long Term [Friday Night Through Wednesday]...
Guidance is in pretty good agreement through the weekend, with
deep moisture gradually increasing across the forecast area from
south to north. The increase in moisture (as well as PoPs) will be
due to a combination of a weak tropical wave approaching from the
southeast and deepening southerly flow across the southeastern
states ahead of a digging trough over the southern Plains. Expect
to see an increase in PoPs south of I-10 on Friday, spreading to
the remainder of the forecast area by Saturday and Sunday. The
weather is likely to remain wet and unsettled into early next week
as the upper trough and associated front slowly moves eastward.
Temperatures should remain near seasonal norms for early fall.
Low pressure in the western Atlantic, competing with high pressure
over the eastern U.S. will result in a continued enhancement in
winds and seas over the northeast Gulf through Thursday. By Friday,
we`ll switch to an easterly flow pattern which favors nighttime wind
surges. Advisory conditions are no longer expected. However
cautionary conditions are expected until Sunday.
Despite drier air moving in behind a cold front, relative humidity
values will not dip into the 30s, so red flag criteria will not be
On Friday we`ll begin to transition to a wet pattern which could
bring 2+ inches of rain, over a few day stretch, to the region.
Specifically, north Florida appears as though it will be affected
most by the upcoming rain. However, with most rivers across
Florida in low-flow stages, seven day rainfall amounts should not
result in flooding levels along local rivers.
.Preliminary Point Temps/PoPs...
Tallahassee 84 63 86 68 86 / 10 0 10 10 30
Panama City 84 67 85 71 87 / 0 10 10 10 20
Dothan 82 62 84 65 86 / 0 0 10 0 20
Albany 81 62 84 66 86 / 0 0 10 10 30
Valdosta 81 63 84 67 86 / 10 10 20 10 40
Cross City 84 66 86 69 84 / 10 10 30 10 40
Apalachicola 84 69 83 72 84 / 0 10 10 10 30