Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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764
FXUS64 KHGX 180241
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
941 PM CDT Sun Sep 17 2017

.UPDATE...
The slug of higher 1.9 inch pwat air mass just off the coast will
come ashore over the next 8-12 hours...creeping up from the
Matagorda Bay region within southwesterly steering flow. This
enhanced lower level moisture flux...with daytime morning
convective temperatures in the middle 80s...will increase shower
and storm chances from sunrise (sub) slight chances to 30% across
the southern half of the CWA through noon. As temperatures warm
into the upper 80s...there is a decent chance that 30-40% of the
southern forecast area will pick up measurable rain. Many areas
impacted by Harvey`s devastating intense rainfall have not experienced
rainfall in nearly three weeks. This may change in the coming
days as a low QPF shower/storm or two passes across to the north.
31

&&

.PREV DISCUSSION... /ISSUED 632 PM CDT Sun Sep 17 2017/

AVIATION...
Kept a fcst of persistence going overnight with some patchy fog,
some possibly dense outside the metro area, and some lower
ceilings developing. Deeper Gulf moisture currently situated just
offshore will probably aid in some sct shra/tstm development near
the coast prior to sunrise...then transition further inland
during the day as we approach the convective temp in the upper
80s. Threw in some VCTS`s taking this into account.  47

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      73  92  74  92  76 /  10  30  10  30  10
Houston (IAH)              75  90  75  89  76 /  10  40  10  40  20
Galveston (GLS)            78  85  78  85  79 /  10  40  10  30  20

&&

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

$$

Discussion...31



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