Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 220445
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1145 PM CDT Sat Apr 21 2018

.AVIATION...
Line of showers and thunderstorms from near JAS-HOU-BYY moving
quickly southeast with heavy rain and tempo IFR conditions
primarily for visby reductions. Cold front moving into CLL at this
time with a few showers along the front and northwest winds 10-15
in the wake of the front with some gusts. Winds should continue to
be NWerly Sunday with gusty conditions persisting throughout the
afternoon. MVFR ceilings should persist in the wake of the front
through around 12-15z then scatter out (VFR) as drier air
infiltrates.


45

&&

.PREV DISCUSSION... /ISSUED 1026 PM CDT Sat Apr 21 2018/

DISCUSSION...
Storms along the pre-frontal trof holding together and continuing
to move through SE TX tonight. With this activity robbing the in-
flow from the lagging cold front, development along that boundary
has been a lot more sparse, especially along the the southern end.
Will also have to keep an eye out for the development of fog (per
goings on over EWX) in between these systems overnight. 41

PREV DISCUSSION... /ISSUED 748 PM CDT Sat Apr 21 2018/

DISCUSSION...
Quick update sent to raise POPS tonight for line of storms moving
through area.

AVIATION...
Mix of VFR/MVFR with winds slowly veering from the ESE to S
tonight as line of storms ahead of the dryline pushes eastward and
through the area. Expect an additional line near the surface low
and cold front to rotate eastward and swing through the northern
sites. VCSH/VCTS will prevail in the TAFS through around 06z north
and 10-11z south based on current timing. Brief IFR conditions
possible with the storms. MVFR ceilings should linger after FROPA
tonight thru 12-16z window then expect those to erode as drier air
spreads quickly southeastward through the region. High clouds from
Pacific tap will likely blanket a good chunk of the area but still
VFR.
45

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      53  72  52  77  55 /  70   0   0   0   0
Houston (IAH)              61  75  56  78  57 /  70   0   0   0   0
Galveston (GLS)            65  74  61  76  64 /  70  20   0   0   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...SMALL CRAFT SHOULD EXERCISE CAUTION from 5 AM CDT Sunday through
     Sunday afternoon for the following zones: Matagorda Bay.

     SMALL CRAFT SHOULD EXERCISE CAUTION through Sunday afternoon 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...Waters from
     Freeport to the Matagorda Ship Channel from 20 to 60 NM...
     Waters from High Island to Freeport from 20 to 60 NM.

&&

$$

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



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