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Area forecast discussion 
National Weather Service Tallahassee Florida
622 am EST Sat Feb 13 2016

Aviation...

[through 12z sunday] unlimited vis/unrestricted cigs are likely
through the period. Northwest-north winds 8 to 15 kt, with gusts near 25 knots
are likely until early afternoon. Winds will gradually diminish
later in the afternoon and this evening.

&&

Prev discussion [324 am est]...

Near term [through today]...
the 10 PM EST regional surface analysis showed a strong (but dry)
cold front translating southeastward across our forecast area, with
cooler, much drier air behind it. The coldest of the airmass will
remain well to our north, but our area will be under the influence
of cold air advection throughout the day. This will be partially
offset by ample insolation, and we expect high temperatures to be in
the lower 50s around Albany and Dothan, and mid 50s elsewhere.



Short term [tonight through monday]...
high pressure will build over the central Appalachians tonight
with a cool and dry airmass in place. With the ridge center so far
to the north, winds are unlikely to go calm for most of the night,
except perhaps across our far northern counties. As a result, the
likelihood of freezing temperatures decreases considerably further
to the south across North Florida, with areas along and north of
I-10 standing the best chance of temperatures dropping to 32 or
colder for 2 or more hours.

The warmup will begin on Sunday as high pressure moves out into
the western Atlantic and the low level flow picks up more of a
southerly component. Increasing cloudiness will keep temperatures
from warming much out of the lower 60s.

By Monday, a storm system will be approaching the region from the
west. Expect afternoon highs to warm into the upper 60s to near
70. Rain chances will begin to increase across our western areas
after 18z, but the bulk of the rain should hold off until after
00z Tuesday.



Long term [monday night through saturday]...
the models have had a tough time today maintaining consistency
with previous cycles. Three days ago, the Euro suggested Monday
night's system would be significantly less energetic than the GFS
solution. In the last couple of cycles the Euro moved toward this
stronger GFS solution. Then with the 13/00z set this morning, all
of the guidance has trended weaker with this system - the GFS
considerably so. As a result, this decreases confidence in the
forecast and further decreases the likelihood of a severe weather
risk with this system across our forecast area. It still looks
reasonably certain that most of the area will get rain Monday
night, so will keep pops in the 70 percent range over the forecast
area.

The system should clear out quickly Tuesday morning with a dry
stretch of weather likely to continue through the remainder of the
period. A quick influx of drier and slightly cooler may arrive on
Thursday, but by Friday, ridging will be building across the Gulf
of Mexico, resulting in high temperatures Friday and Saturday
warming into the mid to upper 70s.



Marine...
offshore winds behind the dry cold front will increase to advisory
levels this morning over the offshore waters before decreasing
late this afternoon. Moderate easterly flow is expected through
the remainder of the weekend. Winds and seas will increase on
Monday ahead of an approaching storm system. A period of advisory
conditions is possible Monday evening through Tuesday morning.
Thereafter, light winds are expected as high pressure builds over
the northern Gulf.



Fire weather...
relative humidity values will be below local critical thresholds for much of this
afternoon. However, erc/fuel moisture values will likely remain
above critical levels, and 20 ft winds are likely to remain just
below 15 miles per hour. Thus we are not issuing a red flag warning. A modest
increase in boundary layer moisture on Sunday will help keep relative humidity
values a little above critical thresholds at most sites.



Hydrology...
the entire Choctawhatchee River is now below flood stage and
other area rivers outside the Suwannee River system are continuing
to drop. Releases from Lake Seminole continue to decrease and will
drop below 40 kcfs later today. As a result, the Apalachicola
River at Blountstown should drop below flood stage by Sunday
evening.

Rises will continue on the Suwannee into the latter part of next
week. Peak discharge from the Withlacoochee is now past Ellaville,
and peak flow from the Alapaha should arrive in the next 48 hours.
Downstream peak flow should stay in the 16-20 kcfs range,
suggesting that only the US-19 crossing near Fanning Springs will
reach action stage around 2/18.

&&

Preliminary point temps/pops...

Tallahassee 57 32 61 44 70 / 0 0 0 0 40
Panama City 55 36 58 49 66 / 0 0 0 0 60
Dothan 52 29 57 42 65 / 0 0 0 10 60
Albany 52 27 57 42 66 / 0 0 0 0 40
Valdosta 55 30 61 44 72 / 0 0 0 0 20
Cross City 60 32 65 47 73 / 0 0 0 0 10
Apalachicola 58 36 58 50 66 / 0 0 0 0 40

&&

Tae watches/warnings/advisories...
Florida...freeze watch from late tonight through Sunday morning for
Calhoun-central Walton-Gadsden-Holmes-inland Jefferson-
inland Wakulla-Jackson-Leon-Liberty-Madison-north Walton-
Washington.

Georgia...freeze watch from late tonight through Sunday morning for Brooks-
Decatur-Grady-Lanier-Lowndes-Seminole-Thomas.

Freeze watch from late tonight through Sunday morning for Baker-
Ben Hill-Berrien-Calhoun-Clay-Colquitt-Cook-Dougherty-early-
Irwin-Lee-Miller-Mitchell-Quitman-Randolph-Terrell-Tift-
Turner-Worth.

Alabama...freeze watch from late tonight through Sunday morning for Coffee-
Dale-Geneva-Henry-Houston.

GM...Small Craft Advisory until 1 PM EST this afternoon for waters
from Suwannee River to Apalachicola Florida from 20 to 60 nm-
waters from Apalachicola to Destin Florida from 20 to 60 nm.

&&

$$

Near term...Fournier
short term...Godsey
long term...Godsey
aviation...Fournier
marine...Godsey
fire weather...Fournier
hydrology...Godsey

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