Area Forecast Discussion
Issued by NWS Riverton, WY

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FXUS65 KRIW 181045
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
445 AM MDT Mon Mar 18 2024

.KEY MESSAGES...

- Tranquil weather through Wednesday, with temperatures well
  above normal.

- Wetter pattern returns for northern and western mountains by
  Thursday, which is becoming more likely to continue through
  the weekend.

&&

.DISCUSSION...
Issued at 123 AM MDT Mon Mar 18 2024

The well advertised blocking pattern dominates the weather
pattern through Wednesday, with tranquil weather continuing
across western Wyoming. Don`t be surprised if areas in the
Bighorn Basin and across Johnson County reach 70 degrees this
afternoon. One thing of note is a barely noticeable front moving
across Johnson and Natrona County this afternoon. The only
really noticeable thing would be a wind shift more from the
northwest during the afternoon, with a few gusts of 25 to 30 mph
across I-90. Other than this, mot much to speak of through
Wednesday.

Later in the week, the blocking feature will finally break down,
allowing a better westerly flow pattern to return. Models have
been pretty consistent with this for the past couple days, and
have been focusing better on the timing, so confidence tonight
is improving on the overall forecast here. Moisture begins to
arrive Wednesday night, bringing increasing light snow to the
northern and western mountains. A weak shortwave moving through
Thursday will also bring some light rain to the Bighorn Basin,
but any accumulations will likely be minimal. This pattern
remains consistent through the rest of the week, bringing
continued light snow to the higher elevations. Models are
beginning to focus on a larger system moving off the Pacific for
the weekend, which may bring higher precip for Saturday,
including form isolated thunder.

&&

.AVIATION /12Z TAFS THROUGH 12Z TUESDAY/...
Issued at 445 AM MDT Mon Mar 18 2024

High pressure will keep prevailing VFR conditions and mostly clear
skies across the area through the TAF period. Wind will be light (<
8 knots) at all terminals, except for KCPR. Wind gusts of 20 to 25
knots are expected at KCPR late this morning through this afternoon.

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

&&

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

&&

$$

DISCUSSION...Hensley
AVIATION...Rowe


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