569
FXUS64 KLUB 170520
AFDLUB

Area Forecast Discussion
National Weather Service Lubbock TX
1220 AM CDT Wed Jul 17 2024

...New AVIATION...

.SHORT TERM...
(This evening through Wednesday)
Issued at 206 PM CDT Tue Jul 16 2024

The upper level ridge and associated high pressure system over
southwestern CONUS will continue to expand eastward this afternoon
with the FA positioned along the eastern flank of the ridge. A very
weak perturbation passing through the eastern side of the ridge will
allow for a slight chance for thunderstorm development late this
afternoon and early evening across the far southern Texas Panhandle.
By tomorrow, the ridge will begin to slightly retreat westward as an
upper level trough tracks through the Great Lakes region therefore
allowing northwest flow aloft to prevail across the FA.

A slight chance (20%) for showers and thunderstorms remain possible
late this afternoon into the overnight hours, mainly across the far
southern Texas Panhandle. Initial convection will develop in eastern
New Mexico along the higher terrain before making a slow south to
southeastward progression into the FA. Uncertainty remains on if
thunderstorms will make their way into our northern zones late
tonight with latest guidance backing off as the shortwave trough
decays. However, we could see some scattered showers develop along a
weak frontal boundary pushing southward from the northern Texas
Panhandle overnight.

The beginning of a slight reprieve in hot temperatures is expected
tomorrow as early morning FROPA shifts winds out of the northeast.
This passage will also work in conjuction with northwest flow aloft
to decrease thickness values. All of this together will lead to a
pleasant day across the region with high temperatures in the low to
mid 90s. Moisture is expected to remain locked over the region; in
addition, a perturbation in the flow aloft may allow for thunderstorm
development once again along the higher terrain in eastern New
Mexico.

&&

.LONG TERM...
(Wednesday night through next Monday)
Issued at 206 PM CDT Tue Jul 16 2024

By OZ Thursday, the synoptic-scale setup over the CONUS should
feature an upper-level ridge over the West and a positively tilted
trough extending from the Great Lakes Region toward Quebec. Later
this week, the ridge should be pushed westward as the trough deepens
over the northern Great Plains, putting the forecast area under NW
to NNW flow aloft for nearly the whole long term period. As a
result, PoPs increase beginning Wednesday evening. PoPs stay
mentionable but decrease Friday afternoon, followed by an increase
due to the arrival of a shortwave Saturday. Because of the
consistent pattern, each day`s weather will be affected by the
previous day`s conditions. Cloud cover should limit daily high
temperatures to below average, providing a break from the heat.
Likewise, clouds should cause lows to trend warmer until Saturday
before cooling down for the remainder of the period.

&&

.AVIATION...
(06Z TAFS)
Issued at 1218 AM CDT Wed Jul 17 2024

An outflow boundary/cold front was currently making its way
southward across the region early this morning. Winds will
continue to shift to the north after the passage of this boundary
with winds picking up a few knots. Rain showers and isolated
thunder will continue for KCDS and KPVW for another hour or two
before diminishing. There is a low chance at KLBB for brief
thunderstorms as the boundary passes through the area but chances
are too low to mention in the TAF.

&&

.LUB WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

SHORT TERM...12
LONG TERM....58
AVIATION...01