Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 241603
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
1003 AM CST Fri Nov 24 2017

.DISCUSSION...
Max temps appear on track for the low to mid 70s based on morning
obs. Very dry airmass in place which will lead to a large diurnal
range today. Will see some patchy cirrus moving across, but much
more sun than clouds today. Enjoy this pleasant late November day.

Wood

&&

PREV DISCUSSION... /ISSUED 324 AM CST Fri Nov 24 2017/

DISCUSSION...
Surface high pressure was located over SE TX early this morning
and this feature will move east allowing onshore winds to return.
The air mass over the region is till very dry and a large diurnal
range in temperatures is expected with high temperatures today
warming into the lower and middle 70`s. Warmer temperatures are
expected tonight as low level moisture deepens. Conditions look a
bit better for some fog late tonight into early Saturday with
light winds, clear skies and deepening boundary layer moisture.

850 temps warm on Saturday and this will support high temperatures
in the upper 70s over much of SE TX. PW values remain meager but
do increase to around 0.90 inches and fcst soundings show some mid
level saturation so the area will have more cloud cover but not
expecting precipitation. A weak cold front will cross SE TX
Saturday night but moisture remains limited and upper level
forcing is weak so again no precip is expected along the front.
Only minor cooling is expected behind the front as 850 temps only
a cool a degree or so. Forecast soundings in the wake of the front
show cloud cover hanging around for the the first half of Sunday
before clouds begin to break up in the afternoon. A gradual warm
up will begin Monday as onshore winds return under sunny skies.
High temperatures on Tuesday could warm to near 80 over much the
area as heights rise and 850 temps warm. A short wave moving
across the central plains will induce a weak area of low pressure
to form and this feature will move east dragging a cold front into
the state on Wednesday. The pressure rises behind this front are
not too impressive and it is unclear whether the front will
actually clear the coast. The GFS and ECMWF differ with this
feature and will lean slightly toward the GFS solution at this
time. This will allow for slightly cooler temperatures on
Wednesday before another warm up on Thursday ahead of the next
front on Friday. That front looks dry but it will bring some much
cooler temperatures for next weekend. 43

MARINE...
No weather impacts are expected across the marine locations for the
next few days. A dissipating frontal boundary is expected to move
off of the coast Saturday night or Sunday morning. A stronger front
may move off of the coast sometime Friday or Friday night.

40

FIRE WEATHER...
Slightly elevated fire weather conditions are expected today as
afternoon relative humidity values drop to near 30 percent over most
of the inland areas. South winds will develop toward midday and
speeds should reach between 5 and 10 mph. Improving conditions are
expected over the weekend as moisture from the Gulf of Mexico
filters back into Southeast Texas.

40

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      74  50  78  52  73 /   0   0   0   0   0
Houston (IAH)              73  51  79  54  74 /   0   0   0   0   0
Galveston (GLS)            69  61  76  61  74 /   0   0   0   0   0

&&

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

$$

Discussion...33


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