Thursday, March 4, 2021

Mar. 4 21

 Area Forecast Discussion

Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 042327
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
527 PM CST Thu Mar 4 2021

.AVIATION...

VFR this evening with mainly light onshore winds. Increased low level
moisture will help with the development of mainly MVFR ceilings early
tomorrow morning. Should see some SHRA development during the day tomorrow
ahead of the next cold front and its associated northwest wind shift
that will move into the area in the afternoon and off the coast in
the evening. Might end up having to deal with some wrap around MVFR
ceilings into tomorrow night and Saturday morning.  42

&&

.PREV DISCUSSION... /ISSUED 412 PM CST Thu Mar 4 2021/

SHORT TERM [Tonight Through Tomorrow/Friday Night]...

Another quiet night expected for SE TX for the most part. Light to
moderate onshore winds have helped to warm temperatures this after-
noon and with the flow persisting, low-level moisture will also be
on the increase tonight. This moderate/strong WAA should produce a
bit more low clouds than patchy fog overnight through sunrise...as
well as some very isolated showers/drizzle near the coast. Lows to-
night will range from the upper 40s far north/inland into the mid/
upper 50s at the coast.

Rain chances are still on tap for tomorrow with the passage of the
next cold front. Models remain in decent agreement with the timing
of this line...into the Brazos Valley just after noon then off the
coast just before sunset. POPs will likely be highest along/just a-
head of the line but given the very limited instability, only just
isolated thunderstorm chances for eastern/inland locations. Colder
air should arrive by the evening hours as the upper low moves down
enough to the SE. 41

LONG TERM [Saturday through Sunday]...

A pleasant weekend is ahead! In the wake of the cold front, ridge
aloft settles in, leaving us with northwest cooler winds, mostly
clear skies and light winds. Highs will generally be in the mid to
upper 60s by Saturday and slightly warmer on Sunday with readings
reaching the upper 60s to low 70s.

A weak upper trough tracks southeastward across central/east TX
Sunday night into Monday. Other than a few clouds, no precipitation
is anticipated during this period given strong subsidence and
limited low to mid-level moisture.

The remainder of the extended period looks relatively dry but
turning warmer and more humid. As the surface high pressure shifts
east of the region, southerly flow will dominate weather conditions
through much of the week. A gradual warm up is expected after
Tuesday with temperatures reaching the upper 70s to near 80. Summer
weather is around the corner as dewpoints reach the upper 60s by
Wednesday and Thursday. With persistent WAA and low-level Gulf
moisture, a few showers cannot be rule out Wednesday and Thursday.
05

MARINE...
High pressure to our east will continue to bring light to moderate
south-southeast flow tonight and Friday. Patchy sea fog, some
locally dense at times will be possible tonight into early Friday
ahead of the next cold front. The front will move through the Gulf
waters by Friday evening, bringing isolated showers along and ahead
of the front. Gusty northwest winds are expected in the wake of the
front, with Small Craft Advisory levels possible. Light to moderate
onshore flow returns Sunday night and will persist through the week
with relatively dry conditions prevailing. 05

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      49  75  51  66  43 /  10   0   0   0   0
Houston (IAH)              51  73  54  68  47 /   0  20  10   0   0
Galveston (GLS)            57  67  57  64  54 /   0  30  10   0   0

&&

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

$$

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