Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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FXUS64 KHGX 150841
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
341 AM CDT Fri Sep 15 2017

.DISCUSSION...
General upper level troughiness continued over Southeast Texas
early this morning. However, a surface ridge of high pressure
extended from the central Appalachians into Texas to help provide
for a fairly large capping inversion.

Patchy areas of fog will lift by mid morning. Onshore flow will
then bring more humid conditions to the forecast area today but
models agree that the cap should keep the area dry. Only expect
showers and thunderstorms to occur over the offshore waters of the
Gulf. The cap eases a bit on Saturday enough for at least isolated
rain chances. Better chances for showers and thunderstorms occur
on Sunday through Tuesday as PWs of 2 to 2.1 inches spread inland
from the Gulf--upper level shortwave troughs will move into the
state and the upper level high pressure area is expected to move
to the south of the state.

40

&&

.MARINE...
Current observations show winds over the waters are 8 to 13 kts and
out of the southeast. Slight tightening in the pressure gradient
Saturday over the western waters and could result a small increase
in wind speed between 10 to 15 knots, while the eastern waters
should remain around 5 to 10 knots. Wind direction will also become
more easterly this weekend and into the beginning of next week, with
seas ranging between 2 to 3 feet.

By Tuesday, start to see winds pick up to 15 to 18 knots overnight
between 00-12Z over the waters. This should be the trend through the
remainder of the week. As a result, expecting wave heights to
increase to 2 to 4 feet Tuesday through Friday. Additionally, tides
are running a half foot to a foot above MLLW in comparison to their
predicted heights.

Hathaway

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      92  70  93  70  92 /  10  10  10  10  20
Houston (IAH)              90  71  91  73  90 /  10  10  20  10  40
Galveston (GLS)            86  77  87  78  86 /  10  10  20  20  40

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.
&&

$$

Discussion...40
Aviation/Marine...08



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