-- Discussion containing changed information from previous version are highlighted. --
404
FXUS64 KAMA 250524
AFDAMA

Area Forecast Discussion
National Weather Service Amarillo TX
1224 AM CDT Tue Jun 25 2024

...New AVIATION...

.SHORT TERM ...
(This evening through Tuesday night)
Issued at 234 PM CDT Mon Jun 24 2024

Thunderstorms developing over the Sangre de Cristo Mountains will
try to make a run at the western Oklahoma Panhandle and the
northwest Texas Panhandle tonight.  Have added in a small chance of
rain for this area for the possibility of storms making it in.
Another batch of showers and thunderstorms over southwest Kansas may
make it into our northeast CWA overnight, so have added some low
pops there as well.  A low level jet, combined with low level
moisture and an upper level disturbance may all help to keep
thunderstorms going through the night.

A surface trough is expected to drop southeastward across the
northwestern parts of the CWA for Tuesday.  This trough could be a
focus for additional showers and thunderstorms Tuesday afternoon and
evening.  Have gone ahead and added small chances of rain for this
possibility.

Highs on Tuesday are expected to be around 105 in the eastern
Panhandles and in Palo Duro Canyon, so will continue with the heat
advisory for these areas.  We may need to expand the heat advisory
for the Canadian River Valley as well as temperatures at Boys Ranch
and Borger should get close to 105.

&&

.LONG TERM ...
(Wednesday through next Sunday)
Issued at 234 PM CDT Mon Jun 24 2024

The first half of the long-term is bound by a fairly consistent
pattern: a robust upper-level ridge centered over the vicinity of
the Panhandles leading to widespread highs around 100 degrees.
Models suggest that weak impulses round the edge of the ridge which
introduces a 20-30% chance for thunderstorms from the late afternoon
hours and through the evening. Friday looks to be the hottest day of
the long-range with 850mb temperatures as high as 35C to 36C if the
GFS is correct. This would certainly suggest there is potential for
a Heat Advisory at least in Palo Duro Canyon, if not elsewhere.

Models suggest that the upper-level ridge will get flattened some
Friday night by a rather impressive upper-level trough in the Upper
Midwest. This could lead to a weak cold front moving into the
Panhandles on Friday night with a weak shortwave trough that
develops off the Colorado Rockies, introducing a chance for showers
and perhaps some thunderstorms in the northern and central
Panhandles Friday night.

NBM is quite excited about precipitation chances Saturday night with
50-60% PoPs already for much of the area. This is in response to a
potential secondary push of the "cold" front and another weak
shortwave trough moving across, as well as some rather impressive
moisture content... 24/00z ECMWF and 24/12z GFS showing around 1.5"
to 1.7" PWATs. That said, this is a rather subtle shortwave trough
thus currently think the NBM PoPs are overdone for being this far
out and without a more robust forcing mechanism. The expectation
at this time is that it`s more likely than not that this will not
be an area- wide event, and that the PoPs will become more refined
with time.

Vanden Bosch

&&

.AVIATION...
-- Changed Discussion --
(06Z TAFS)
Issued at 1220 AM CDT Tue Jun 25 2024

VFR conditions are expected with this TAF cycle. Some showers or
storms may develop late in this TAF period and they may move over
the sites. Highest confidence right now is KAMA, so have added
VCSH mentions to give estimated timing for now. Thunderstorm
mentions may need to be added in further issuances. Winds will
mainly remain around 15 to 20 kts or less during the next 24 hours
at the terminals.

Muscha
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&&

.PRELIMINARY POINT TEMPS/POPS...
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Amarillo TX               100  69 100  74 /  20  20  10  20
Beaver OK                 104  69  98  71 /  20  20  10  20
Boise City OK             100  66  98  69 /  20  10  20  30
Borger TX                 107  70 105  75 /  20  30  10  20
Boys Ranch TX             105  70 102  73 /  20  20  10  30
Canyon TX                  99  68  99  71 /  20  20  10  20
Clarendon TX               99  71  99  73 /  10  20  10  10
Dalhart TX                101  66 100  69 /  20  20  20  30
Guymon OK                 102  68  99  70 /  10  20  10  30
Hereford TX               101  68 100  72 /  20  20  10  30
Lipscomb TX               106  70 101  72 /  20  20  10  20
Pampa TX                  101  70 101  73 /  20  20  10  20
Shamrock TX               104  72 102  74 /  10  10  10  10
Wellington TX             105  74 104  75 /  10  10  10  10
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&&

.AMA WATCHES/WARNINGS/ADVISORIES...
-- Changed Discussion --
TX...Heat Advisory from 1 PM this afternoon to 8 PM CDT this evening
     for TXZ005-010-015-020-317.

OK...Heat Advisory from 1 PM this afternoon to 8 PM CDT this evening
     for OKZ003.
-- End Changed Discussion --

&&

$$

SHORT TERM...15
LONG TERM....52
AVIATION...05