Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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774
FXUS64 KHGX 120340
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
940 PM CST Mon Dec 11 2017

.UPDATE...
Evening surface analysis showed a prefrontal trough moving south
across North Texas, with an associated cold front draped across
Oklahoma. Expect both of these features to reach the region during
the overnight into the morning hours on Tuesday, with little
impact on sensible weather tonight beyond winds shifting to the
north and increasing into the 10-15 MPH range behind the front.
The main update to the forecast is to update hourly temperatures
as several locations have fallen faster than previously advertised
and lowered overnight lows a few degrees as well given this trend.
Expect some stabilization in how quickly temperatures fall as
split channel satellite imagery shows a broken deck of cirrus now
moving overhead. With drier air and increasing winds behind the
front on Tuesday, a brief discussion on fire weather concerns has
been included below as elevated fire weather conditions may
materialize.

Huffman

&&

.FIRE WEATHER...
Some concerns with regard to fire weather on Tuesday as RH values
fall to less than 30 percent and winds increase to around 15 mile
per hour between mid morning and mid afternoon. Criteria should
remain below Red Flag criteria but elevated fire weather conditions
look plausible. A cold front will cross SE TX early Tuesday morning
with a reinforcing shot of dry air. The pressure gradient will
tighten and north winds will occasionally gust in excess of 20 mph.
43

&&

.PREV DISCUSSION... /ISSUED 918 PM CST Mon Dec 11 2017/

AVIATION...
A bit of cirrus will linger over the region for the next 12-18
hours. A cold front will cross the area early Tuesday and north
winds will increase in the wake of the front. Winds could be a bit
gusty mid morning through mid afternoon. 43

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      40  64  35  64  42 /   0   0   0   0  10
Houston (IAH)              43  65  37  62  44 /   0   0   0   0  10
Galveston (GLS)            51  62  46  60  53 /   0   0   0   0  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...SMALL CRAFT SHOULD EXERCISE CAUTION from 4 AM CST Tuesday
     through Tuesday evening 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...Waters from Freeport to the Matagorda Ship Channel
     from 20 to 60 NM...Waters from High Island to Freeport from
     20 to 60 NM.

&&

$$

Discussion...14



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