Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 150039
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
739 PM CDT Thu Sep 14 2017

.AVIATION...
VFR. The recent influx of higher moisture has allowed for a lower
dew point depression during the early morning hours. As evidenced
this morning...clear skies and sub 5 knot winds should allow dew
points to fall to near the ambient temperatures and increase the
probability for a couple of hours of MVFR (to locally IFR) fog
formation over more rural hubs. Light southeast breeze...backing a
bit more east with a passing sea breeze from the city southward
during the late afternoon hours...with a late morning developing
cumulus field. 31

&&

.PREV DISCUSSION... /ISSUED 357 PM CDT Thu Sep 14 2017/

DISCUSSION...
The warm/humid weather across SE TX today will likely be repeated
tomorrow as the weak upper ridge/generally light onshore winds re-
main in place. This along with the mostly clear skies overnight...
should allow for the development of patchy ground fog by sunrise.
Still no POPS through Fri, as there is still quite a bit of drier
air just above the surface.

Rain chances will return to the area starting Sat (mainly at/near
the coast) as moisture levels continue to deepen across the area.
Aloft...we will also be seeing some changes as the ridge over the
state flattens in response to a strong/deep trof digging over the
Western U.S.. This pattern could draw some moisture/energy across
the state from a Pacific tropical system. The tightening pressure
gradient in response will also help draw some much higher PWs (2-
2.4 inches) into the FA from the western Gulf by Sun. Chance POPS
already in for Sun/Mon (and possibly through Tues) could trend up
with later runs. Per the extended guidance, the rest of next week
could remain slightly unsettled/wet as the upper trof lingers out
west and helps push weak disturbances across from the west as the
low-level flow remains out of the Gulf. 41

MARINE...

Light to moderate southeast winds are expected through the end of
the week. Winds turn more to the east over the weekend and into
early next week. Winds increase closer to 15 knots Monday into
Tuesday. Light winds will keep seas low through the weekend with a
slow build to start next week. Tide levels this afternoon are on
track with astronomical tide trends which is something I have not
see in quite some time.

Overpeck

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      72  92  72  91  72 /   0  10  10  10  10
Houston (IAH)              71  91  72  91  73 /   0  10  10  20  10
Galveston (GLS)            78  87  78  88  78 /  10  10  10  20  20

&&

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

$$

Discussion...31
Aviation/Marine...42



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