Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 131051
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
551 AM CDT Wed Sep 13 2017

.AVIATION...
Cirrus will continue over the area today but should begin to
thin later tonight. SW winds this morning will become S-SW during
the day and differential heating may foster a weak sea breeze late
today and winds may briefly swing to the SE before veering back to
the SW tonight. 43

&&

.PREV DISCUSSION... /ISSUED 401 AM CDT Wed Sep 13 2017/

DISCUSSION...
High clouds this evening have kept our temperatures warmer tonight
in comparison to these last few nights, with current temperatures in
the upper 50s/ lower 60s in our northern zones ranging into the
upper 70s closer to the coast.

Moisture is on the rise with the return to onshore flow as of
Tuesday, and GOES-16 precipitable water field indicates PWs are
back up over an inch. With surface ridging building in from the
east, conditions should remain dry through the short term
(Thursday and Friday). Forecast soundings keep PWs below 1.5
inches until Saturday when the seabreeze becomes more dominant,
advecting in more moisture over SE TX.

Bumped PoPs up to 20% for Saturday to account for the rise in PWs
indicated by the both the forecast soundings, as well as the
increase in dewpoints noticed in the 00Z global guidance.
Therefore, a slight chance for widely scattered showers and storms
will be possible Saturday. Again, best chance for scattered
coverage will be Sunday with PWs reach near to slightly above 2.0
inches. Similar conditions will be in store for Monday, but by
Tuesday we begin to see the upper level ridge take control and dry
things out a bit. This will lessen our chance for precip Tuesday
and Wednesday, and expecting coverage to be more isolated to
widespread.

Little variation in the high temperature forecast over the next
week, with highs remaining in the low 90s across the upper TX coast.
Daily minimum temperatures will slowly rise with Wednesday`s low
temperatures falling into upper 60s to the north and mid 70s along
the coast, by the weekend ranging between the mid to upper 70s.
Skies should begin to clear out Wednesday evening keeping skies
mostly clear Thursday. Will see more of a partly cloudy sky come
Friday, to accompany the rise in PWs and advection of moisture
into the region.

Hathaway

MARINE...
Swells have subsided and generally low seas and light winds will
prevail today. A light to moderate onshore flow will persist through
the end of the week with the slightly stronger winds expected at
night. Some very minor coastal flooding issues at high tide will
also remain possible for the next couple of days due to high
astronomical high tides. 43

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      91  69  93  70  92 /   0   0   0  10  10
Houston (IAH)              91  71  91  71  91 /   0   0   0  10  10
Galveston (GLS)            86  77  86  78  87 /   0   0   0  10  10

&&

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

$$

Discussion...08
Aviation/Marine...43



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