FXUS65 KRIW 221708

AFDRIW



Area Forecast Discussion

National Weather Service Riverton WY

1108 AM MDT Sun Mar 22 2026



.KEY MESSAGES...



- Lingering light showers decrease across the Bighorn Range this

  morning, otherwise decreasing clouds today.



- Temperatures today will be 15 to 20 degrees cooler than

  Saturday, but will still reach 10 degrees above normal highs

  for early spring.



- Very warm temperatures return for early to middle next week.



&&



.DISCUSSION...

Issued at 201 AM MDT Sun Mar 22 2026



Today will see a bit of a reprieve in the unprecedented early 

spring heat, as a weak cold front has pushed across central

Wyoming. Some gusty north winds have brought cooler temperatures

into the state, but these temperatures are still well above

normal for mid-March. Highs today will "only" be in the 50s and

60s, about 10 degrees above normal. The front has brought some 

light precip to the Bighorn Range, but any accumulations have

been negligible. As this front washes out this afternoon, west

to southwest winds return, and with ridging building back in,

temperatures will start to increase back into the 60s and 70s

into the middle of this week. The ridge will be slightly farther

south, so the extreme heat will be held back, and this will also

open the door for some precip to move back into the northwest

mountain ranges and the Parks. Temperatures look warm enough to

produce light rain during the day and light snow during the

overnight hours. Moisture with this impulse looks very limited,

so overall accumulations remain minimal.



Another weather system approaches on Wednesday. Ahead of this

system, winds are expected to increase considerably. This along

with very dry air will bring another threat for fire weather

across most of the state Wednesday afternoon.



&&



.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...

Issued at 1107 AM MDT Sun Mar 22 2026



Some MVFR clouds are around some sites to start the period, like 

KCPR. These should erode in the first couple hours of the period, 

ending by 20z. VFR conditions are then expected through the period. 

The rest of Sunday is dry, with breezy winds at the usual places. 



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...Straub

AVIATION...Wittmann