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Area forecast discussion 
National Weather Service Birmingham Alabama
607 am CDT Friday Mar 27 2015

Update...
for 12z aviation.

Discussion...

The surface cold front was moving southward across central Alabama
where it just passed Troy and Opelika at this writing. A few
lingering showers stretched northward some 150 miles behind the
front...but were decreasing in coverage the past few hours. The
latest water vapor magery has the upper trough swinging this way
with another impulse moving into the northwest this afternoon. A few
showers are possible with this feature and mention light rain.

Went ahead and issued a freeze warning and freeze watch for parts of
north central Alabama the next few mornings. The freezing conditions
will be fairly short-lived...only a few hours...and the temepratures
will not be extreme...only 29 to 32 degrees.

Several impulses ride through the upepr flow this week. This will
push a few fronts close to the region but it appears that these
fronts will not blast through here. They will either hang up or
dissipate. At any rate...this will provide central Alabama with
several days of unsettled weather. Temperatures gradually warm
through the week with a trend toward zonal flow. The models are in
fair agreement through the time frame with the ensembles not quick
as amplified with any feature.

75

&&

Aviation...
12z taf discussion.

The cold front has pushed south of all taf sites this morning.
Widespread MVFR ceilings currently prevail at all sites with localized
pockets of IFR ceilings. Look for ceilings to begin to lift by 15z with VFR
conditions across the area by 18z and continuing through the
remainder of the forecast period. An approaching upper trough could
bring a few light showers into the northwest sections of central
Alabama this afternoon but the chance of one occurring at tcl or bhm
is very low and will not mention in taf. Gusty northwest winds will
reach 18 to 20 knots at times today but will drop to below 10 knots
after 00z.

41



&&

Preliminary point temps/pops...
Gadsden 52 31 49 30 58 / 10 10 10 10 0
Anniston 54 31 49 27 59 / 10 10 10 10 0
Birmingham 54 33 47 32 62 / 10 10 10 10 0
Tuscaloosa 58 35 49 34 65 / 20 10 20 10 0
Calera 57 35 49 34 62 / 10 10 10 10 0
Auburn 58 35 54 31 62 / 30 10 10 10 0
Montgomery 62 37 57 35 67 / 20 0 10 10 10
Troy 60 37 56 33 66 / 30 0 10 10 0

&&

Bmx watches/warnings/advisories...
freeze watch from late Saturday night through Sunday morning for
Blount-Calhoun-Chambers-Cherokee-Clay-Cleburne-Etowah-Marion-
Randolph-St. Clair-Talladega-Walker-Winston.

Freeze warning from 1 am to 9 am CDT Saturday for Blount-Calhoun-
Cherokee-Clay-Cleburne-Etowah-Randolph-St. Clair-Talladega-
Winston.

&&

$$

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