Area Forecast Discussion
Issued by NWS Amarillo, TX

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000
FXUS64 KAMA 060421
AFDAMA

Area Forecast Discussion
National Weather Service Amarillo TX
1021 PM CST Tue Dec 5 2017

.AVIATION...
For the 06z TAFs...
No significant changes from forecast of 6 hours ago.  VFR
conditions forecast for the next 24 hours: generally clear sky and
no visibility restrictions.  Weak frontal boundary will pass
through northern terminals by 08z Wednesday, and will reach AMA
by 12z.  Surface winds will shift to northwest with passage of
this feature, and will be north-northeast gusting to around 30 kt
between 16z and 23z.  Increasing mid- and high-level clouds
Wednesday evening.

Cockrell

&&

.PREV DISCUSSION... /Issued 521 PM CST Tue Dec 5 2017/

AVIATION...
For the 00z TAFs...
VFR conditions anticipated for the next 24 hours.  High-level
clouds will be diminishing this evening, leading to a clear sky on
Wednesday.  No visibility restrictions foreseen.  Light
southwest surface winds will trend to west and northwest as a
weak cold front arrives before sunrise.  Northeast surface winds
will commence gusting into the 25 to 30 kt range around 16z
Wednesday, and will gradually diminish during the late afternoon
as the post-frontal pressure gradient relaxes.

Cockrell

PREV DISCUSSION... /Issued 224 PM CST Tue Dec 5 2017/

DISCUSSION...
Upper level positively tilted trough that lies from southern
California into northwest Oklahoma is expected to continue to move
southward away from the Panhandles overnight. The precip associated
with this trough will likely stay to the south of our area. However,
a flurry or two can not be ruled out mainly south of interstate 40.

The upper level pattern will be dominated by a trough over the
eastern U.S. and a ridge over the West Coast of the United States.
This will put the Panhandles in a northwest to north flow.  This
flow will come southward across the eastern U.S. from the arctic
regions. The Panhandles will be on the western edge of the colder
air.  We will have another re-enforcing shot of cold air for
Thursday and this should keep many highs in the 30s. An upper level
short wave trough will also dig southward on the back side of the
eastern U.S. trough. This short wave is expected to pass across the
Panhandles on Thursday. Some very light snow will be possible as
this wave passes by, but confidence is not high enough to mention
flurries at this point.

Temperatures will slowly moderate after Thursday into the weekend,
but another cold front may knock us back down closer to normal early
next week.

&&

.AMA Watches/Warnings/Advisories...
TX...None.
OK...None.

&&

$$

03/29



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