347
FXUS65 KRIW 110748
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
148 AM MDT Tue Jun 11 2024

.KEY MESSAGES...

- Warmer and drier conditions expected Tuesday through much of the
  week.

- Elevated river levels will continue through the week.

- Elevated to

&&

.DISCUSSION...
Issued at 145 AM MDT Tue Jun 11 2024

Mostly clear skies across the Cowboy State this morning, in the wake
of Monday`s trough. A transitory ridge will move over the region
today, keeping conditions dry. Gusty west-southwest winds, with
gusts of 25 to 30 mph, will also occur across areas west of the
Divide, including the Wind Corridor. These winds will push into the
central basins after 00Z, keeping breezy conditions through 06Z.
These winds, combined with relative humidity (RH) values in the
teens, will result in elevated to fire weather conditions in the
lower elevations.

A more zonal flow pattern will be in place Wednesday, but similar
conditions will return across the CWA. One difference however, will
be that winds will be stronger, with gusts up to 35 mph, and be more
widespread across the forecast area. High temperatures in the 90s
will also be much more widespread east of the Divide and RH values
will be in the teens once again. These conditions will once again
result in elevated to near-critical fire weather conditions.
Agricultural burning of any kind is highly discouraged today and
Wednesday. There also looks to be enough moisture in the mid-levels
for high-based showers and thunderstorms over far northwestern
portion and eastern portions of Sweetwater County in the afternoon.

A strong high center over AZ/NM will rebuild and push
its ridge axis over the Northern Rockies Thursday into Friday.
Showers and thunderstorms could return to southern portions of the
CWA Thursday, spreading northward across the rest of the area
Friday, as an upper level low from the Desert Southwest surges
northward. A longwave trough will build over the PACNW and western
Canada over the weekend, resulting in southwest flow aloft over the
Cowboy State. This could bring elevated fire weather conditions
again to much of the CWA.

&&

.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...
Issued at 952 PM MDT Mon Jun 10 2024

Conditions will remain VFR and mostly SKC through the TAF period. A
northwesterly to northeasterly breeze will continue at several
terminals this evening into tonight. Wind will increase at KRKS late
Tuesday morning and at other terminals in the afternoon. Gusts will
range from 20-25 knots (slightly higher at KRKS) once wind
increases.

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

&&

.FIRE WEATHER...
Issued at 145 AM MDT Tue Jun 11 2024

Dry conditions, west to southwest winds with gusts of 25-30 mph
and RH values in the teens will result in elevated to near-
critical fire weather conditions today and Wednesday. High
temperatures in the 90s will be much more widespread east of
the Divide Wednesday and RH values in the teens, along with
wingspread wind gusts up to 35 mph. These conditions will once
again result in elevated to near-critical fire weather conditions.
Agricultural burning of any kind is highly discouraged today
and Wednesday.

&&

.HYDROLOGY...
Issued at 145 AM MDT Mon Jun 10 2024

Rivers and creeks will continue to run high at or just below Action
Stage, but remain steady for now. SWE at SnoTel sites continue to
fall, with most remaining locations at 5 inches or less. A couple of
notable exceptions, Grand Targhee in the Tetons and Two Ocean Plateau
in southern portions of Yellowstone NP, still have 30 and 20 inches
respectively. It looks like any widespread flooding threat is
diminishing and will likely only impact specific areas, if at all.

&&

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

&&

$$

DISCUSSION...LaVoie
AVIATION...Rowe
FIRE WEATHER...LaVoie
HYDROLOGY...LaVoie