Area Forecast Discussion
Issued by NWS Amarillo, TX

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661
FXUS64 KAMA 182038
AFDAMA

Area Forecast Discussion
National Weather Service Amarillo TX
338 PM CDT Wed Apr 18 2018

.DISCUSSION...
Another dry day is store for tomorrow with elevated fire weather
conditions for some locations. This will be followed by a chance
of some widespread precipitation for Friday and Saturday.

Latest 18/12Z hi-res model and probabilistic guidance shows a
surface high developing over the upper Mississippi River Valley
in-conjunction with a surface low over the central Rockies by
tomorrow afternoon. With an upper level ridge moving over the
Panhandles in-conjunction with the lower level features, a
tightening surface gradient will setup across the western
Panhandles with some gusty south to southwest winds in the
afternoon with elevated fire weather conditions possible.
Otherwise, another dry day across the region with high temps
ranging from the mid 60s to lower 70s.

Going into the day on Friday, a southern stream upper level low
pressure system will make its way across the Four Corners region.
Some showers and some isolated thunderstorms are possible across
the far western Panhandles out ahead of the main system as the
latest log-p schematics show limited elevated convection across
the aforementioned area of around 500 J/Kg. With the system
tracking slightly slower than the previous model runs, the main
segment of the precipitation will move west to east across the
area along the perturbations within the cyclonic circulation of
the main upper level low starting late Friday night through the
day on Saturday. Elevated convection cannot be ruled out on
Saturday, but should be limited with overcast skies and cooler
temperatures limiting surface instability. QPF amounts and timing
of system will be updated as we get closer to Friday. Highs on
Friday and Saturday will drop into the 50s.

Northwesterly mid level flow will return Sunday and continue into
the remainder of the forecast period. Long range model guidance
hints at some additional precipitation along a cold front moving
through the region during the second half of the day on Tuesday
toward the end of the forecast period, but chances remain low at
this time. High temperatures will return closer to normal by early
next week.

Meccariello

&&

.FIRE WEATHER...
Elevated to critical fire weather conditions are expected through
the remainder of the afternoon hours before winds diminish this
evening.

Elevated fire weather conditions are possible across the far
western areas on Thursday, especially in the afternoon hours as
min RH values drop to between 15-20% along with southerly winds
of 15-25 kts with gusts to 30 kts in the afternoon hours.

Starting Friday, fire weather conditions should diminish as low
level moisture and precipitation should increase across the entire
area.

Meccariello

&&

.PRELIMINARY POINT TEMPS/POPS...
Amarillo TX                37  70  42  60  40 /   0   0  10  50  70
Beaver OK                  35  69  41  59  40 /   0   0   0  30  80
Boise City OK              33  69  40  52  37 /   0   0  10  70  70
Borger TX                  41  69  44  58  39 /   0   0  10  50  80
Boys Ranch TX              35  73  42  61  39 /   0   0  20  60  70
Canyon TX                  37  73  45  62  41 /   0   0  20  60  70
Clarendon TX               40  69  40  64  43 /   0   0   5  40  80
Dalhart TX                 33  70  42  57  37 /   0   0  20  70  70
Guymon OK                  36  70  42  55  40 /   0   0   5  50  70
Hereford TX                36  72  45  62  41 /   0   0  20  60  70
Lipscomb TX                36  69  42  59  43 /   0   0   0  30  80
Pampa TX                   36  66  40  59  37 /   0   0   5  40  80
Shamrock TX                39  70  41  64  45 /   0   0   0  30  80
Wellington TX              39  71  41  67  46 /   0   0   0  30  80

&&

.AMA Watches/Warnings/Advisories...
TX...Red Flag Warning until 6 PM CDT this evening for the following
     zones: Armstrong...Carson...Collingsworth...Donley...Gray...
     Hansford...Hemphill...Hutchinson...Lipscomb...Ochiltree...
     Roberts...Wheeler.

OK...Red Flag Warning until 6 PM CDT this evening for the following
     zones: Beaver...Texas.


&&

$$

16/29



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