Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 130442
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1142 PM CDT Tue Sep 12 2017

.AVIATION...
Not much change from what was discussed below in the 00Z TAF
package. Southwest breezes that will back more southerly by late
tomorrow afternoon. Cirrus canopy. 31

&&

.PREV DISCUSSION... /ISSUED 1010 PM CDT Tue Sep 12 2017/

DISCUSSION...
Wrap around clouds from the remnants of Irma will affect Southeast
Texas tonight. In turn, this should keep the overnight
temperatures up a bit from the previous few nights. The current
forecast is on track and no changes are planned at this time. 40

&&

PREV DISCUSSION... /ISSUED 633 PM CDT Tue Sep 12 2017/

AVIATION...
Period-long VFR. There will be subtle changes to the wind field
and sky cover through the period. As the remnants of Irma move
northeastward into the upper Midwest tomorrow...regional winds
will back around to the west southwest. (Near) surface winds will
generally be under 15 knots as the region will be under the influence
of southern-based high pressure. Wrap around high cloudiness is rotating
around the backside of Irma so SCT-OVC cirrus can be expected through
tomorrow afternoon. 31

&&

PREV DISCUSSION... /ISSUED 335 PM CDT Tue Sep 12 2017/

DISCUSSION...
A relatively benign weather pattern continues through the forecast
period. Offshore flow today will become light to occasionally
moderate onshore tomorrow and persist into next week as high
pressure settles in over the area. The return of onshore flow will
allow PWs to gradually recover throughout the week, eventually
exceeding 2.0 inches by Sunday. Although ridging remains in place,
this increase in moisture may be enough to spark some showers and
storms along the seabreeze beginning on Sunday. High temperatures
should generally hold steady in the upper 80s to low 90s well into
next week. Max heat indices will start out in the upper 80s to
low 90s tomorrow before gradually increasing to near 100 with the
increase in humidity by the end of the weekend. 11

MARINE...
Long period swells will continue to abate tonight as the light
offshore winds shift to the W/SW. This low-level flow will then
shift more to the S/SE and slowly strengthen by Weds evening. This
light to occasionally moderate onshore wind pattern is expected
the rest of the week on into this weekend. Some very minor coastal
flooding issues at high tide will also remain possible these next
couple of days even with the waning long period swells. 41

FIRE WEATHER...
Dry conditions will continue across SE TX the next few days...even
with the return of light onshore winds late tomorrow. Relative humidity
values are expected to drop below 35% over many inland areas again
on Wednesday afternoon. This weather pattern will keep short term
fuels such as grasses very dry...but we should see the return of
more noticeable low-level moisture from the Gulf by Friday into
the weekend. 41

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      66  91  69  93  70 /   0   0   0   0   0
Houston (IAH)              68  91  71  92  71 /   0   0   0   0   0
Galveston (GLS)            75  86  77  86  78 /   0   0   0   0   0

&&

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

$$

Discussion...40
Aviation/Marine...31



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