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Area Forecast Discussion (AFD)

Issued by Houston/Galveston, TX (HGX)

                            
000
FXUS64 KHGX 181808
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1208 PM CST Fri Jan 18 2019

.AVIATION...
Fog and low ceilings are persisting into the afternoon hours, but
we are also seeing some patchy areas of light rain/drizzle pop up
in the obs. Will keep CIGS mostly LIFR to start off with and only
improving things slowly to the lower end(s) of the MVFR range. As
for the pesky(stupid) fog, VIS should continue lift across inland
portions of the CWA but could remain a problem along the coast as
the sea fog lingers. Did not make a lot of changes with the progs
of scattered SHRA/isolated TSRA with the passage of the next cold
front tonight. Should be VFR by tomorrow morning with only strong
and gusty north winds as the main forecast issue. 41

&&

.PREV DISCUSSION... /ISSUED 1011 AM CST Fri Jan 18 2019/ 

SHORT TERM...

The main story this morning is the fog that continues to linger 
across the area. It will not likely be until the LLJ can get 
cranking enough to cause stronger mixing to erode low level clouds
so dense fog advisory has been extended until noon. Visibility 
has improved in some areas but decreased in other areas of SE 
Texas. Best plan was to expand the advisory to new areas of dense 
fog and leave areas already in the advisory even if visibility has
improved. Surface low should deepen in the Texas Panhandle to 
help increase winds and erode fog.

Warm air advection pattern and moisture advection should keep 
some showers in the forecast for today. Forecast still looks on 
track with the frontal passage tonight and now a very weak line of
showers/storms to form along it in the early morning hours. Low 
temperatures look on track but might need to adjust as new 
guidance becomes available for 12Z runs.

Overpeck

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      70  45  50  32  53 /  30  50   0   0   0 
Houston (IAH)              70  53  55  33  54 /  30  70  10   0   0 
Galveston (GLS)            65  56  57  38  51 /  20  70  10   0   0 

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...Dense Fog Advisory until noon CST today for the following zones: 
     Austin...Brazoria Islands...Brazos...Burleson...Coastal 
     Brazoria...Coastal Galveston...Coastal Harris...Coastal 
     Jackson...Coastal Matagorda...Colorado...Fort Bend...
     Galveston Island and Bolivar Peninsula...Inland Brazoria...
     Inland Galveston...Inland Harris...Inland Jackson...Inland 
     Matagorda...Matagorda Islands...Waller...Washington...
     Wharton.

GM...Dense Fog Advisory until noon CST today for the following zones: 
     Coastal waters from Freeport to Matagorda Ship Channel TX 
     out 20 NM...Coastal waters from High Island to Freeport TX 
     out 20 NM...Galveston Bay...Matagorda Bay.

     Gale Watch from Saturday morning through Saturday evening for 
     the following zones: Coastal waters from Freeport to 
     Matagorda Ship Channel TX out 20 NM...Coastal waters from 
     High Island to Freeport TX out 20 NM...Waters from Freeport 
     to Matagorda Ship Channel TX from 20 to 60 NM...Waters from 
     High Island to Freeport TX from 20 to 60 NM.

&&

$$