198
FXUS65 KRIW 241042
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
442 AM MDT Tue Sep 24 2024

.KEY MESSAGES...

- An amazing fall day across the Cowboy State today with warm
  and dry conditions.

- Warming continues through the week with well above normal temperatures
  expected for Wednesday through Friday.

- Elevated to critical fire weather conditions will be possible
  Wednesday/Thursday due to increasing winds, low RH, and warm
  temperatures.

&&

.DISCUSSION...
Issued at 138 AM MDT Tue Sep 24 2024

A pleasant fall day with warm and dry conditions across the Cowboy
State today. Skies will remain mostly clear and temperatures will
begin to warm with highs slightly above normal for today. Areas
east of the Divide can see temperatures in the mid to upper 70s
with areas west of the Divide seeing values in the low 70s.
Skies will be mostly clear with light winds.

Quiet weather is expected to prevail throughout the remainder of the
week as high pressure builds in across the region. Temperatures are
forecast to warm up with above normal values expected for the second
half of the week. Models continue to show high temperatures
Wednesday-Friday reaching well above normal values. 700 MB
temperatures are forecast to range from 12 to 17 C. This translates
to surface temperatures ranging from the upper 70s across the west
and mid 80s to low 90s east of the Divide. Based off these
forecasted highs, many locations may be within a few degrees of
record high values. One thing to monitor for the middle of the
week will be fire weather conditions. Wednesday will see a
shortwave move across the PACNW, which will begin to tighten the
pressure gradient for Wednesday and Thursday. Winds are
expected to increase as a result of this, with gusts of 20 to 30
mph possible at times during the afternoon/evening on Wednesday
and Thursday. The strongest of winds will be across portions of
Johnson, Natrona, Fremont, and Sweetwater Counties along with
the wind corridor. Due to well above normal temperatures, gusty
winds, and low RH values elevated to critical fire weather
conditions may be possible for Wednesday and Thursday
afternoon/evening. As of right now no highlights will be issued
but the situation will need to be monitored. Ridging looks to
persist across the region well into next weekend keeping any
disturbances well to the north of the area. The next chance for
precipitation does not look to arrive until the start of next
week but chances are looking slim with little agreement among
models. If models do not end up changing its very likely we will
see dry and warm conditions continue into the end of September.

&&

.AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/...
Issued at 437 AM MDT Tue Sep 24 2024

VFR conditions will prevail through the period. High clouds
will continue to exit to the southeast, with SKC skies across
the forecast area by 16Z. Winds will remain light (11 kt or
less) through the TAF period, along with dry conditions.

Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for
the latest information on smoke, icing, and turbulence
forecasts.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

DISCUSSION...Dziewaltowski
AVIATION...Hattings