Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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FXUS64 KHGX 230432
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1132 PM CDT Fri Sep 22 2017

.AVIATION...
Very little change to the current aviation forecasts. Still
appears favorable for fog development toward morning. Rain chances
still look low and have held off on any mention. 03z HRRR is an
outlier ATTM with scattered storms along and south of I-10.
Subsidence and weak NVA with drier column so have favored the
NAM/GFS solutions.

Note on missing observations around SETX ADAS outage due to a
fiber cut. No return to service time reported. Appears that
IAH/HOU are being submitted outside the ADAS process.

45

&&

.PREV DISCUSSION... /ISSUED 1013 PM CDT Fri Sep 22 2017/

UPDATE...
No major changes with the forecast this evening. Storms over in-
land areas died shortly after sunset and currently not seeing a
whole lot of activity offshore. Clear skies and light/calm winds
overnight should be favorable for the development of some patchy
fog by sunrise. Going grids appear to have things covered. 41

PREV DISCUSSION... /ISSUED 335 PM CDT Fri Sep 22 2017/

Best shower/thunderstorm coverage so far today has been in/around
the Matagorda Bay and Jackson County areas where the highest
moisture levels have been found. Isolated to widely scattered
storm development is still possible across the rest of our area
over the next several hours (peak heating) with all activity
expected to dissipate early this evening. The area still looks to
be on the warm and dry side over the weekend with only spotty
mainly daytime shower/thunderstorm development anticipated. Models
are generally trending next week`s increasing rain chances
associated with an approaching storm system and accompanying cold
front to be setting up across the western and central parts of the
state as weak mid/upper level ridging centered out in the Gulf
tries to be a player for our area. Once the ridging breaks and we
do get the front on through, look for some drier and slightly
cooler weather to eventually work its way into our area. 42

CLIMATE...
Through the first three weeks of the month...

-College Station had an average temperature of 79.4 degrees (1.9
 degrees below normal) and a rainfall total of 0.22 inches (2.03
 inches below normal)

-Houston Intercontinental Airport had an average temperature of
 79.0 degrees (1.9 degrees below normal) and a rainfall total of
 0.98 inches (1.99 inches below normal).

-Hobby Airport had an average temperature of 81.5 degrees (0.3
 degrees above normal) and a rainfall total of 3.16 inches (0.71
 inches below normal)

-Galveston had an average temperature of 82.6 degrees (right at
 normal) and a rainfall total of 0.01 inches (4.51 inches below
 normal). Galveston`s drier September on record is 0.04 inches set
 in 1924.

42

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      72  91  72  91  71 /  10  20  10  20  10
Houston (IAH)              73  91  73  89  73 /  10  20  10  30  10
Galveston (GLS)            79  88  79  88  79 /  10  20  10  30  10

&&

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

$$

Discussion...41
Aviation/Marine...45


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