Area Forecast Discussion
Issued by NWS San Angelo, TX

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FXUS64 KSJT 150420
AFDSJT

Area Forecast Discussion
National Weather Service San Angelo TX
1020 PM CST Thu Dec 14 2017

.AVIATION...
/06Z TAFS/

VFR through tomorrow evening. High clouds continue to stream
across sites south of KABI. Northeast winds have diminished to
less than 12 knots at most sites late this evening. Expect
northeast winds less than 10 knots through most of tomorrow,
before turning to south/southwest Friday evening.

&&

.PREV DISCUSSION... /issued 538 PM CST Thu Dec 14 2017/

AVIATION...
/00Z TAFS/

VFR through the next 24 hours. Northeast winds 10 to 15 knots
currently, will diminish to less than 10 knots tonight through
tomorrow. 20

PREV DISCUSSION... /issued 227 PM CST Thu Dec 14 2017/

SHORT TERM...
(Tonight and Friday)

Cold front that pushed across the area overnight has brought
cooler conditions to West Central Texas, with temperatures mainly
in the mid and upper 50s. A veil of high clouds will continue to
stream across the I-10 corridor and this will keep temperatures
from completely bottoming out, but its still gonna be a cold night
with temperatures near freezing for many locations.

Light cold advection will continue into Friday, although winds
will become light and variable during the afternoon. Lots of
sunshine still, so temperatures will be pretty close to where they
end up today.

LONG TERM...
(Saturday through next Thursday)

Rain chances return for some locations....

(Saturday night through Sunday morning)

The pleasant weather will continue across the area through the
weekend and for much of next week. There is a chance for some
areas along and east of a line from Throckmorton to Sonora to see
rain. An area of low pressure will begin to develop along the
southern Texas Gulf Coast by Friday afternoon. This low will track
to northeast along the coast and our area will be on the back end
of the precipitation shield. There will be a definitive line
between areas seeing rain and areas seeing cloudy skies. Rainfall
totals will be light with the best chances of ran occurring
Saturday evening through Sunday morning. Highs will be cooler with
the increased cloud cover. Expect highs on Saturday to be in the
mid to upper 50s with a few locations seeing temperatures
approaching 60 degrees. Overnight lows will be warm compared to
what we have been seeing these past mornings. Lows on Saturday
will be in the low 40s.

(Sunday through next Thursday)

The weather will be quiet across the region during this time
period. A few weak frontal systems will move through the area and
keep temperatures right at or just above seasonal normals for this
time of year. Expect highs in the mid 60s under mostly sunny
skies during the afternoon. Overnight lows will be in the mid to
upper 30s. Beginning on Thursday, the upper level pattern will
change across the U.S., both models suggest a deep trough
developing over the intermountain west. This will help the colder
air to the north move south toward Texas. By Thursday morning a
developing area of low pressure will be moving south-southeast
across the central plains. This will put our area in a warm
southeast flow. Highs on Thursday will be in the upper 60s. This
low pressure system will bring a cold front to our area by
Thursday night. Both models show a strong temperature gradient
associated with front. By Thursday night the front is just
beginning to move into northern Texas. We will continue to monitor
this system as it has the potential to bring very cold
temperatures to the region.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene  30  56  36  59 /   0   0   0  10
San Angelo  31  56  34  57 /   0   0   0  20
Junction  35  58  34  54 /  10   5   0  30
Brownwood  33  57  33  58 /   0   0   0  20
Sweetwater  32  55  37  58 /   0   0   0   5
Ozona       34  56  35  52 /   5   0   0  20

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$


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