Saturday, January 20, 2018

Jan. 18 18


Northwest Houston, TX, during the early morning.

Northwest Houston, TX, during the early evening.

Houston, TX radar during the late night.


Summary: The day was cloudy, very cool, and dry. There looked to be some isolated light showers, on the radar, in the Houston, TX area, during the late and maybe early night. I didn't see any rain on the radar, in the Houston, TX area, anytime before the night. I don't remember seeing, feeling, or hearing any drops of precip, where I was, during anytime of the day. Stratus clouds looked to cover the whole sky, during the morning, afternoon, evening, and night. The wind speeds looked to be calm with maybe some gentle to moderate gusts and moderately strong gusts. It felt cold, during the early and maybe mid-morning. It felt very cool, during the late morning, afternoon, evening, and night. There was a Hazardous Weather Outlook issued for the Houston, TX area, by NOAA. There were no other watches, warnings, alerts, advisories, or weather statements/outlooks issued for the Houston, TX area, that I know of. The low temperatures looked to be in the high 30's with maybe some mid to low 30's and the high temperatures looked to be in the low 40's with maybe some mid 40's, for the Houston, TX area.


Houston, TX Storm Summary: There looked to be some isolated light showers, on the radar, in the Houston, TX area, during the late and maybe early night. I didn't see any rain on the radar, in the Houston, TX area, anytime before the night. I didn't see, or hear about any flooding, or damage caused by the weather to any of the locations in the Houston, TX area, during anytime of the day.


My Storm Summary: I don't remember seeing, feeling, or hearing any drops of precip, where I was, during anytime of the day. The sky looked cloudy during the day, so it felt like it was going to rain, but it didn't/ I didn't hear any lightning strikes, or hear any rumbles of thunder. Ice was still melting on the roads and ground. I didn't see any flooding, or damage caused by the weather, where I was, during anytime of the day.


Locations: Northwest Houston, TX.


Thoughts: I was a little sad to see the ice start to melt. I kind of enjoyed the ice/sleet storm! It was fun to have a winter storm in Houston, TX. It is not something that Houstonians see too often. I would like to live some where that gets a few winter storms per year, but not too many.


Area Forecast Discussion 
Issued by NWS Houston/Galveston, TX
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411
FXUS64 KHGX 190313
AFDHGX

Area Forecast Discussion
National Weather Service Houston/Galveston TX
913 PM CST Thu Jan 18 2018

.DISCUSSION...
At 800 PM, a weak area of low pressure was trying to develop over
the western Gulf east of KBO. At 850 mb, high pressure was noted
over the western Gulf and moisture on the backside of the high was
increasing from BRO to CRP to LCH. At 700 mb, a well defined short
wave extended from SE OK into the Big Bend region and moisture
had begun to deepen along the middle and lower coast. At 300 mb, a
cyclonic shear axis extended across Central Texas. Warm air
advection coupled with lift from the short wave and shear axis
will generate some light showers and have expanded the area with
20 PoPs to include the Brazos valley and a bit further east along
the upper coast. It`s very dry in the sub-cloud region and much
of the rain will evaporate but some sprinkles still possible.
Surface high pressure over the southern US was moving east and
surface winds were slowly veering to the southeast. Cloud cover is
helping to insulate and temperatures have been very steady this
evening, remaining in the mid/upper 30s. The clouds and weak
onshore flow will likely limit the temperature drop tonight and
bumped temps up a few degrees. Temps will likely remain
steady/slowly fall through 08z and then slowly warm between
09-12z. 43

&&

.PREV DISCUSSION... /ISSUED 615 PM CST Thu Jan 18 2018/

AVIATION...
A mid-level cloud deck continues to cover all TAF sites this
evening, with a slightly lower deck over the northern terminals
at 5000 feet and 8000-9000 feet decks closer to the coast. These
mid-level clouds will continue to lower through the overnight
hours, as an area of low pressure approaches from the middle Texas
coast Friday morning. This system will bring showers to the area
with an isolated chance of thunderstorms along the coast.
Therefore, carrying VCSH at the coastal TAF sites beginning at
12Z with these showers spreading inland across the metro TAF
sites through the afternoon hours. Introduced VCTS at both LBX and
GLS starting 20-21Z Friday to account for the possibility of
isolated thunderstorms through the early evening hours. Wind
speeds will increase to 7-11 kts through the afternoon as this
area of low pressure moves across SE TX.

Ceilings will shift from VFR to MVFR conditions as this system
moves through the region. Went ahead and lowered visibilities
along the coast late Friday into early Saturday to account for
potential misty/foggy conditions which could develop underneath
the MVFR ceilings. Ceilings should also lower beginning in the
north late Friday afternoon into early Saturday, with borderline
MVFR to IFR conditions possible, as indicated at CLL.

Hathaway

PREV DISCUSSION... /ISSUED 340 PM CST Thu Jan 18 2018/

DISCUSSION...

Persistent cloud cover across central areas has kept temps in the
upper 30s so far this afternoon. Have seen some low to mid 40s across
sw and northern areas where we have seen some cloud cover thin
at times. Expect to see cloudy skies tonight as moisture depths increase
and an upper level low approaches. Will see a much warmer night tonight,
but will still likely see freezing temps near Houston and to the north.
Do not expect any areas to experience a hard freeze tonight.

A sfc trof and/or broad weak sfc low will develop just off the Texas
coast late tonight and on Friday. This feature coupled with an upper
level low that will move across on Friday and will trigger showers
areawide and possibly some thunderstorm activity near the coast and
offshore. The chance of rain will be greatest offshore and near the
southern coast around Matagorda bay and taper downward well inland.
However, most of the area will see a chance of showers tomorrow.

The chance of rain will increase again on Sunday afternoon ahead of
a large scale upper low that will be centered across the central plains.
Southerly winds will increase on Saturday and Sunday ahead of this storm
system and this will lead to much warmer temperatures. The best chance of rain
will occur on Sunday afternoon and evening ahead of a cold front that will
move through on Sunday night. A fairly transient and zonal mid-upper level
flow pattern will be present most of next week with a couple of chances for
precipitation. The first occurring on Wednesday (near the coast and offshore)
and then again at the end of next week on Friday as a large mid/upper trof
begins to amplify across the western U.S. 33

MARINE...

Winds will gradually veer to the southeast tomorrow as high pressure
moves to the east of the region. As an area of low pressure develops
offshore on Friday, winds will continue to veer to southerly as
seas build. Chances of rain will increase heading into the weekend.
In between periods of precipitation, expect patchy sea fog to
develop late Friday as warmer air moves over the colder shelf water.
The fog threat will persist into Sunday evening when the next cold
front is forecast to push off the coast. 22

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      33  50  47  67  58 /  20  20  40  30  20
Houston (IAH)              35  54  51  69  60 /  10  30  40  40  20
Galveston (GLS)            38  55  54  65  58 /  10  50  50  30  20

&&

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

$$

Discussion...43

Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Houston/Galveston TX
346 AM CST Thu Jan 18 2018

TXZ163-164-176>179-195>200-210>214-226-227-235>238-191300-
Austin-Brazoria-Brazos-Burleson-Chambers-Colorado-Fort Bend-
Galveston-Grimes-Harris-Houston-Jackson-Liberty-Madison-Matagorda-
Montgomery-Polk-San Jacinto-Trinity-Walker-Waller-Washington-
Wharton-
346 AM CST Thu Jan 18 2018

This hazardous weather outlook is for portions of Southeast Texas.

.DAY ONE...Today and Tonight

A Hard Freeze Warning is in effect mainly along and north of Interstate
10 until 9 AM CST this morning. A couple hours of below freezing temperatures
are possible again tonight, but a Hard Freeze Warning will not be needed
as temperatures are not expected to fall much below 30 degrees.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A couple hours of below freezing temperatures are possible Friday morning,
but a Hard Freeze Warning will not be needed as temperatures are not
expected to fall much below 30 degrees.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

$$

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