Monday, December 14, 2020

Dec. 14 20

 Summary: White and grey stratus clouds looked to cover the whole sky, during the morning and maybe night. White and grey stratus clouds looked to cover most of the sky, during the afternoon and evening. The wind speeds looked to be calm with moderate to moderately strong gusts with some really strong gusts, during the early morning. It felt very cold, during the early and mid-morning. It felt cold, during the late morning. It started to feel very cool, during the early afternoon. It felt very cool, during the mid and late afternoon and evening. It felt cold, during the night. I believe there was a 0 percent chance for rain for the Houston, TX area, during the day. I did not see or hear about any rain falling anywhere in, or near the Houston, TX area, during any time of the day. I did not see or feel any rain drops where I was in the Houston, TX area, during any time of the day.

Area Forecast Discussion
Issued by NWS Houston/Galveston, TX

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000
FXUS64 KHGX 150007
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
607 PM CST Mon Dec 14 2020

.AVIATION [00Z TAF Issuance]...

Starting the night with mostly clear skies in the northern flying
areas that will soon be over ran by MVFR CIGs at around 2000 FT over
the next couple of hours. Areas south of HOU and SGR already have
those MVFR CIG and will stay there through the night. Tomorrow
morning, warm front moving north from the gulf lowers CIGs to LIFR
conditions and has potential to be even lower. Improvement will come
early wednesday morning after a cold front pushes through he area,
then VFR conditions will take hold. 35

&&

.PREV DISCUSSION /Issued 346 PM CST Mon Dec 14 2020/...


.SHORT TERM [Through Tomorrow Night]...

Dry air was able to make its way further south into the area today
clearing out skies for pretty much the entire area except along
the coast. However, this break in the sky cover will be short
lived with clouds increasing tonight as moist southerly flow
enters the region. A rather damp, dreary day is expected on
Tuesday across the area as a weak boundary/warm front develops
along the coast. Meanwhile, an upper level low will be swinging
across North Texas that will bring a cold front through the area
late Tuesday. Isolated showers will begin to pop up across the
area in the late morning hours on Tuesday with the best chance of
showers will be along coast near the stalled boundary. This
coverage will expand northward across the eastern 2/3rds of the
area in the afternoon ahead of the ahead of the cold front
associated with the upper level low. This boundary will quickly
move across the area from west to east first crossing the Brazos
Valley around 7 to 9pm Tuesday night and then off the coast by
midnight. The FROPA will end the precipitation for our area and
also usher in breezy northwesterly winds Tuesday night into
Wednesday morning.

With the clearing skies, low temperatures for tonight were brought
down a few degrees into near freezing across the north and down to
near 40 along and south of I-10. The temperature forecast for
tonight though does have some bust potential in either direction as
it may end up being cooler than forecast if the clear skies stick
around later than expected, or warmer than forecast if the southerly
fetch/cloud cover returns more quickly. High temperatures on Tuesday
will be a few degrees warmer than today due to that southerly flow
and WAA out ahead of the approaching cold front. Then low
temperatures Tuesday night will drop down into the mid to upper 30s
north of I-10, and into the upper 30s to low 40s to the south of I-
10.

JPF


.LONG TERM [Wednesday Through Monday]...

Wednesday will be the chilliest day through the long term as high
pressure moves in from the west clearing skies and weakening winds.
These clear skies continue into Wednesday night helping to usher in
subfreezing temperatures across most of the region. The City of
Houston and along the coast may stay a couple of degrees above
freezing, but pretty much areas north of I-10 and down into
Wharton County. The northern thirds of the CWA may even drop into
the upper 20s before daybreak on Thursday. The transient high
pressure will be overhead on Thursday providing us with clear
skies all day and the higher heights may help make Thursday a few
degrees warmer than Wednesday.

Don`t get to comfortable with the clear skies as another upper
level low will be swinging in from the west Friday into Saturday.
Southeasterly flow increases across the area on Friday bringing
the cloud cover back. Our chances of seeing some showers increase
Friday night into Saturday morning as the upper level low swings
overhead. The associated cold front will move through the area
ending the precipitation chances sometime Saturday afternoon or
evening. The increase in southerly flow Friday into Saturday means
that temperatures will climb back up into the mid to upper 60s in
the afternoons. But, CAA behind the cold front Saturday night
will cool temperatures back down Sunday and Monday.

JPF


.MARINE...

Winds and seas have diminished, so the only hazard currently out is
the Low Water Advisory thru this evening when we should see enough
recovery to get the levels climb above -1 MLLW mark. High pressure
moves to the east tonight and winds will veer to the se as a warm
front approaches the coast. Periods of light rain & drizzle are
possible ahead of the next front that pushes through Tuesday
evening. It appears SCA`s will again be required in the wake of this
front in addition to some low water conditions developing into
Wednesday complements of the moderate-strong nw winds.

Onshore flow resumes late Thurs & will monitor the potential for
some sea fog development Friday in advance of the next front
currently penciled in for Sat. 47

&&

.PRELIMINARY POINT TEMPS/POPS...

College Station (CLL)  37  56  36  50  30 /   0  20   0   0   0
Houston (IAH)          41  54  40  53  33 /   0  40   0   0   0
Galveston (GLS)        49  63  45  53  43 /   0  60  20   0   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...

TX...None.
GM...Low Water Advisory until 9 PM CST this evening for the following
     zones: Galveston Bay...Matagorda Bay.


&&

$$

AVIATION...35

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