Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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FXUS64 KHGX 181651
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1051 AM CST Sun Feb 18 2018

.DISCUSSION...
Not planning on a lot of changes with the forecast for the update.
Fog over the inland areas have been slow to improve thus far...but
they are improving. Across the bays/nearshore waters, visibilities
should remain problematic through the afternoon hours (or longer).
While the better chances for showers will be to our north/west, we
will continue to see patchy areas of light rain/drizzle. 41

&&

.PREV DISCUSSION...  /ISSUED 410 AM CST Sun Feb 18 2018/

Early this morning, a frontal boundary stretches from just off
the coast in the Bolivar-Galveston area to right around the
Matagorda Bay area. Area webcams and surface observations are
still showing fog (some dense) in the Bays and off the coast. An
onshore flow returns to the entire area today as high pressure
moves off to the east and low pressure begins to deepen in the
eastern Colorado area. Will keep low shower chances in the
forecast for the next two days along with above normal
temperatures and strengthening onshore winds. A deepening
southwest flow aloft and its associated series of disturbances in
combination with rising precipitable water values and an
approaching slow moving cold front will bring increasing rain
chances to the area starting Tuesday and persisting into Wednesday
night or Thursday. The best chance for potentially locally heavy
rainfall for portions of Southeast Texas looks like it could set
up Tuesday night through Wednesday night with rainfall totals of 1
to 3 inches almost areawide for this event. Would like another
run or two of the models before mentioning heavy rainfall in the
forecast, but will continue to indicate its potential in our
Hazardous Weather Outlook. The persistent southwest flow aloft
will help to keep some rain chances in our forecast for the
remainder of the week and on into next weekend. 42

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      71  64  78  65  75 /  20  20  20  20  60
Houston (IAH)              74  64  78  66  77 /  20  20  20  20  50
Galveston (GLS)            73  64  72  65  72 /  20  10  20  20  30

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...Dense Fog Advisory until noon CST today for the following zones:
     Coastal waters from Freeport to the Matagorda Ship Channel
     out 20 NM...Coastal waters from High Island to Freeport out
     20 NM...Galveston Bay...Matagorda Bay.

&&

$$



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