Sunday, January 3, 2021

Jan. 3 21

 Summary: The sky looked to be clear, during the morning, afternoon, evening, and night. I don't remember seeing a cloud in the sky. The wind speeds looked to be calm with maybe some light to moderate gusts. It felt cold, during the early and mid-morning. It felt very cool, during the late morning, afternoon, and evening. It felt cold, during the night. I did not see, or hear about any rain falling anywhere in the Houston, TX area, during anytime of the day. I did not feel, or see any rain drops where I was in the Houston, TX area, during anytime of the day. I believe that there was a 0 percent chance for rain for the Houston, TX area. 

Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 032332
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
532 PM CST Sun Jan 3 2021

.AVIATION [00Z TAF Issuance]...

Clear skies and southerly winds around 10 knots continue to
prevail at all area airports. Winds will become light and variable
as we go into the overnight hours as the pressure gradient from
the high pressure east of us goes away. Some forecast models are
still hinting at a window for fog in the early morning hours on
Monday from 11z-16z. Dew points are higher than yesterday thanks
to today`s onshore flow, but still not too confident on there
being enough moisture for fog to be a significant issue. For now,
BR has been added for all area airports during this time frame
with the typical spots for fog getting MVFR visibilities thrown
in as well. If fog does develop, it will dissipate by late Monday
morning and conditions will return back to VFR for the rest of the
day. Monday morning is also when southwesterly winds will kick in
around 5 knots for inland areas and around 10 knots along the
coast. Looking ahead, winds will become light and variable once
again on Monday evening.

Batiste

&&

.PREV DISCUSSION /Issued 344 PM CST Sun Jan 3 2021/...

.DISCUSSION...

Relatively quiet weather remains the expectation this week, with
the most impactful weather feature being a midweek cold front that
will put a halt to an early week warming trend and bring in a
chance for showers and an isolated thunderstorm.

Otherwise, look for temperatures that are generally seasonable (a
little warmer than average early in the week, a little cooler than
average late in the week). Late night/early morning fog should
become more of a feature over the next couple of nights as
humidity increases ahead of that midweek front.




.SHORT TERM [Through Monday Night]...

The satellite is again quite clear, with maybe a stray scrap of
cirrus marring a completely blue sky. With the full sun and
relatively dry air, temperatures have drifted a little above
seasonal averages, into the middle to upper 60s across the area.

Winds today are south-southwesterly as high pressure moves off to
the east, which is helping to usher in some more humidity, though
it`s still relatively dry - particularly inland - as we are still
moderating a drier airmass. Along with the high moving off, low
pressure far to our northwest is deepening. This tighter pressure
gradient has made winds today a little gusty as well.

Tonight, we`ll see that low and perhaps even a very weak front
make its way to the area, while another high slides in behind it.
This means that while we can probably expect light winds overnight
(and perhaps some patchy fog if we have enough low level moisture
in place), we may see winds turn offshore because of this Monday.
Regardless, this will be short-lived as a more substantial low
will begin to develop in the lee of the Rockies, establishing
onshore - but that`s a matter for the long term...


.LONG TERM [Tuesday Through Sunday]...

With surface high moving east of the area, onshore winds are set to
return by Tues. This along with the steady increase of moisture via
the Gulf could also signal the return of some low will also POPs by
Tues night/early Weds morning in the form of WAA-type showers along
the coast. But, the main rain chances look to be with the approach/
passage of a strong cold front and its associated upper low through
the region Weds afternoon and evening. Showers and isolated thunder
storms are likely for this time frame, but there are hints that the
cap will remain too strong for any significant/strong development.

Given the rather progressive nature of this overall pattern of late,
all this activity should be moving quickly to the E/NE by late Weds
night. Cooler temperatures along with mostly clear/sunny skies will
be back over SE TX for the rest of the week. Looking way ahead into
next weekend, not a lot of consensus so far with the the next upper
level shortwave moving in from the W/NW. ECMWF/Canadian seems to be
leaning toward one for Fri night or Sat...ahead of a more organized
upper low/trof currently progged for late Sun afternoon/night.


.MARINE...

Expect light, generally onshore winds today to stay light, but
become more offshore tomorrow. Since the winds are light, they are
also likely to be somewhat variable. Look for winds to establish
themselves as onshore again Tuesday in advance of the next
frontal passage in the midweek. Expectations are for this front
to cross the waters Wednesday night. Offshore winds and elevated
seas will develop in the wake of the front late Wednesday into
Thursday with Caution or Advisory conditions likely.


.HYDROLOGY...

For the moment, the only flood warnings in effect are on the San
Bernard River - at East Bernard, Boling, and Sweeny. The East
Bernard warning will likely be able to be canceled this evening,
as the river is falling and is nearly to flood stage this
afternoon. Warnings will be needed at Boling and Sweeny for some
time yet.

Additionally, we continue to watch Normangee closely. While
forecast crests have been slightly lower of late, it is still
above flood, and the river is forecast to reach flood stage very
late tonight. Will give things one more forecast cycle from the
RFC this evening before a final decision will have to be made.
Should expectations remain that the river reaches flood stage
tonight, a warning will have to be issued by the evening shift.

&&

.PRELIMINARY POINT TEMPS/POPS...

College Station (CLL)  39  68  40  68  51 /   0   0   0   0  10
Houston (IAH)          45  71  43  68  52 /   0   0   0   0  10
Galveston (GLS)        56  68  53  66  58 /   0   0   0   0  10

&&

.HGX WATCHES/WARNINGS/ADVISORIES...

TX...None.
GM...None.

&&

$$

DISCUSSION...Luchs
SHORT TERM...Luchs
LONG TERM...41
AVIATION...Batiste
MARINE...Luchs
HYDROLOGY...Luchs

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