Area Forecast Discussion
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
FXUS62 KTAE 242255

555 PM EST Wed Dec 24 2014

.Near Term [Through Tonight]...
At 23z, the surface cold front was very near Tallahassee and
moving eastward. The front will continue to push through the
remainder of the area overnight. However, at upper levels the
trough is positively tilted with the base of it still well back to
the west across the western Gulf. Water vapor imagery still
shows a lot of mid and upper level moisture streaming across the
area ahead of it. A fairly large area of light rain has developed
across the coastal waters southeast of Apalachicola and is moving
northeastward this evening. A couple of our local hi-res models
have picked up on this feature and spread very light rainfall back
into portions of the Florida big bend and adjacent south-central
Georgia during the first half of the overnight hours. Given the
radar trends, PoPs were increased across the southeast half of the
forecast area for the first half of the night. Rainfall amounts
will remain light, however. Also nudged low temperatures up a
couple of degrees with moisture slightly slower to exit the area.


[Through 00z Friday] Skies will be clearing from west to east
overnight with VFR conditions returning. VFR will then prevail
through Thursday with NW winds around 10 knots or less.


.Prev Discussion [246 PM EST]...

.Short Term [Thursday Through Friday Night]...
The upper trough to our west will be shearing out as it crosses the
area on Christmas Day. As the next trough digs into the plains,
heights will rise over FL. At the surface, high pressure centered
over New Orleans at the start of the period will move northeast to a
position off the NC coast by Friday evening. This pattern will bring
us a brief period of dry weather with below normal temps on
Christmas Day and Night. As we have been advertising for a while
now, afternoon temps will peak in the upper 50s to lower 60s in most
areas with mid 60s confined to areas south and east of Perry. Low
Thursday night will drop into the mid 30s across most areas at least
10 miles inland from the coast. While no freezing temps are
expected, a few or the normally colder areas will see some frost.
Highs on Friday will be 3-5 degrees milder than on Christmas day. By
Friday night, a cold front will be crossing the Lower Mississippi
Valley as a warm front lifts north across the Gulf of Mexico.
Isentropic ascent over the boundary will bring slight to low rain
chances to the western half of the forecast area.

.Long Term [Saturday Through Wednesday]...
Another short wave will cross the Southern Plains on Sunday and then
zip across the Gulf Coast states early next week leaving nearly
zonal flow in its wake. As the cold front approaches form the west,
the warm front will lift further to the northeast and into the
forecast area by Sunday. The cold front will stall once it reaches
our forecast area and we are seeing more model consensus in this
regard than we did a day ago. The result will be daily rain chances
with the high PoPs northwest and lowest to the southeast. Temps will
be above normal for most of the period, dropping back to normal
levels on New Year`s Eve.

As a cold front pushes east of the waters, westerly winds will start
out at advisory levels, but then drop to cautionary overnight as
they veer to the northwest. Seas will not drop below advisory
thresholds until Thursday morning. As high pressure build north of
the waters, winds will become light to moderate out of the east from
Thursday night into Saturday. A cold front will cross the
Mississippi Valley over the weekend as a warm front lifts north
across the local waters. This will veer winds to onshore for Sunday
and Monday.

.Fire Weather...
Recent heavy rainfall and another round of rain over the weekend
will keep red flag conditions away for the next week.

Many area rivers have shown sharp rises through this afternoon. Only
some light rain will linger in the FL Big Bend through this evening,
with a dry period from Christmas through the end of the week.
Rainfall totals were widespread from 3 to 5 inches with a band of
rainfall up to 9 inches from Port St Joe, to Tallahassee, to
Thomasville, to Tifton. There will be moderate flooding on the
middle Ochlockonee River basin, on the Shoal River near Mossy
Head, and on the far lower Choctawhatchee. In addition, several
rivers will reach minor flood stage, including Kinchafoonee creek,
as well as the Withlacoochee, St. Marks, and Apalachicola rivers.
With dry weather through the end of the week, most rivers should
have time to subside to below flood levels through the weekend.


.Preliminary Point Temps/PoPs...

Tallahassee   44  62  36  67  50 /  30   0   0   0  10
Panama City   47  60  44  65  55 /  10   0   0  10  20
Dothan        39  59  38  62  49 /   0   0   0   0  30
Albany        41  61  35  64  46 /  10   0   0   0  10
Valdosta      46  62  37  67  49 /  30   0   0   0  10
Cross City    51  65  38  70  52 /  30   0   0   0  10
Apalachicola  48  60  44  64  55 /  40   0   0  10  20


.TAE Watches/Warnings/Advisories...

FL...RIP CURRENT RISK until 4 AM EST /3 AM CST/ Thursday for Coastal
     Bay-Coastal Franklin-Coastal Gulf-South Walton.

     High Surf Advisory until 4 AM EST /3 AM CST/ Thursday for
     Coastal Bay-Coastal Gulf-South Walton.

GM...Small Craft Advisory until 1 PM EST Thursday for Apalachee Bay-
     Coastal waters From Ochlockonee River to Apalachicola FL
     out to 20 NM-Coastal waters from Suwannee River to Keaton
     Beach FL out 20 NM-Coastal waters from Apalachicola to
     Destin FL out 20 NM-Waters from Suwannee River to
     Apalachicola FL from 20 to 60 NM-Waters from Apalachicola
     to Destin FL from 20 to 60 NM.



HYDROLOGY...HOLLINGSWORTH is the U.S. government's official web portal to all federal, state and local government web resources and services.