Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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FXUS64 KHGX 131745
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1145 AM CST Fri Jan 13 2017

.AVIATION...
Spotty MVFR CIGS expected to linger across SE TX this afternoon,
with VIS issues mainly at the coast (GLS). With little change in
the overall weather pattern of persistent onshore winds/increas-
ing low-level moisture and no fronts...we should see a repeat of
last night for tonight. The additional caveat would be perhaps a
bit more -RA/DZ as the strong WAA continues under the strong cap.
Sea fog will remain the biggest issue for the GLS TAF throughout
the day through the weekend. 41

&&

.PREV DISCUSSION... /ISSUED 1049 AM CST Fri Jan 13 2017/

Surface analysis shows cold front to the north stalled from
Temple to Mexia then stretching back NE to north of Tyler. South
of the boundary warm sector has moistened with dewpoints in the
upper 60s to low 70s in a couple of spots. With the front in the
area the pressure gradient has changed allowing for winds to
become easterly over the area. East to southeast winds along the
coast with higher moisture has led to sea fog formation which is
still evident along the coast on visible satellite imagery. Fog
should be thinning along the coast and over the coastal waters.
Fog did extend down the Upper Texas Coast to Matagorda bay but
visibility improved quickly around 8AM per Matagorda Bay pilots.
Likely have similar conditions this evening, tonight and Saturday
morning. Forecast will continue with fog for the coast.

Otherwise the only changes for the forecast this morning were for
ongoing trends as temperatures should reach the upper 70s. There
may be enough cloud cover to keep temperatures from reaching the
80s but that has not stopped warming much this January.

Early glance at the models, GFS seems to be holding back another
closed low for next week which will impact how much rain develops
over SE Texas. Rain chances still look good Monday night into
Tuesday but could now get another strong system Thursday into
Friday next week.

Overpeck

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      77  64  75  61  74 /  20  20  20  20  40
Houston (IAH)              77  63  76  62  74 /  20  20  20  20  30
Galveston (GLS)            73  63  70  62  71 /  20  20  10  20  20

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...Dense Fog Advisory until noon CST today for the following zones:
     Coastal waters from Freeport to the Matagorda Ship Channel
     out 20 NM...Coastal waters from High Island to Freeport out
     20 NM...Galveston Bay...Matagorda Bay.

&&

$$



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