Area Forecast Discussion
Issued by NWS Amarillo, TX

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552
FXUS64 KAMA 181108
AFDAMA

Area Forecast Discussion
National Weather Service Amarillo TX
508 AM CST Mon Feb 18 2019

.AVIATION...

For the 12Z TAFs:

TAFs will be in MVFR/IFR conditions this morning through parts of
the afternoon, mainly for KDHT and KGUY...as KAMA should be far
enough south to avoid the low ceilings and visibility restrictions
due to snow. KDHT and KGUY will be stuck with low clouds and
periods of light snow that could keep visibilities in IFR. Look
for some relief later this afternoon. Easterly winds to be the
norm through this period around 10-15 knots.

&&

.PREV DISCUSSION... /Issued 421 AM CST Mon Feb 18 2019/

DISCUSSION...

A shortwave trough will approach the Panhandles today while
upslope surface flow prevails. Lower levels remain dry despite
some light snow and wintry precipitation expected across the
Oklahoma and portions of the northern Texas Panhandles today. May
see some snowfall accumulations of up to 1 to 3 inches today
before the first round ends this evening, however expecting any
accumulations to remain fairly light today. Precip should end
across the northern portions of the forecast area by 00Z Tuesday,
but then the second round of snow and wintry precip expected to
begin developing or moving into the Panhandles by 12Z to 15Z
Tuesday. Main upper trough near the Four Corners region and over
the southwestern states will move east Tuesday. Snow and wintry
precip will increase Tuesday and continuing into Tuesday night
before ending from west to east by 09Z to 12Z Wednesday.

Drier Wednesday as the upper trough exits the Panhandles and
subsidence prevails behind it. Surface low pressure across eastern
Colorado and eastern New Mexico Thursday deepens and allows for
increasing southwesterly winds late this week. Warm air advection
pattern and increasing low level moisture Thursday night into
Friday ahead of an approaching upper trough over the Great Basin
region will result in some light precipitation across the eastern
portions of the forecast area Friday. Surface low and cold front
will tracks across the Panhandles Friday night into Saturday as
the upper trough continues to approach the forecast area.
Precipitation will continue to develop and increase across the
Panhandles Friday night into Saturday with mainly rain or possibly
convection in the warm sector ahead of the surface low and cold
front while precipitation changes over to snow and wintry
precipitation in the cold sector behind the surface low and front
Friday night and Saturday across the Oklahoma and northwestern
portions of the Texas Panhandles. Precipitation expected to end
from west to east Saturday night with drier conditions expected
late this upcoming weekend.

Schneider

&&

.AMA Watches/Warnings/Advisories...
TX...Winter Weather Advisory until 6 PM CST this evening for the
     following zones: Dallam...Hartley...Sherman.

     Wind Chill Advisory until 9 AM CST this morning for the
     following zones: Dallam...Sherman.

OK...Winter Weather Advisory until 6 PM CST this evening for the
     following zones: Cimarron...Texas.

     Wind Chill Advisory until 9 AM CST this morning for the
     following zones: Beaver...Cimarron...Texas.


&&

$$

99/99



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