Area Forecast Discussion
Issued by NWS Cheyenne, WY

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000 FXUS65 KCYS 050433 AFDCYS Area Forecast Discussion National Weather Service Cheyenne WY 933 PM MST Thu Mar 4 2021 .SHORT TERM...(Tonight - Friday) Issued at 230 PM MST Thu Mar 4 2021 A few rain and/or snow showers will remain possible along the I-80 corridor through this evening as a well-organized upper low drifts eastward across the central Rockies. No impacts expected from this activity as the bulk of the energy is focused well to the south of the CWA across Colorado. Expect any chances for precipitation will likely rapidly diminish by around 8 PM MST tonight. High-amplitude upper-level ridging develops along the Rockies on Friday w/ 700 mb temperatures climb to +2 to +4 C. Highs will be in the 60s to near 70 F along/east of I-25. .LONG TERM...(Saturday - Thursday) Issued at 303 AM MST Thu Mar 4 2021 High pressure ridging builds into the region as weaken Central Plains low advects eastward. Drier and warmer conditions prevail through the weekend ahead of upper trough and moisture-limited frontal boundary for Sunday. Ahead of front on Saturday will see a diurnal increase in winds for the afternoon mainly along and west of the Laramie Range with gusts into the 30 mph range. Isolated snow showers for the Sierra Madre Range for light accumulation on Sunday. Moderate wind support aloft at 850 and 700mb for mixing to surface on Tuesday ahead of deepening trough for again elevated wind speeds into the 30s and 40s for southern gap areas. Long range models still have difference with progression and impact of deep trough in the region middle of next week though expect periods of precipitation and cooler temperatures. && .AVIATION...(For the 06Z TAFS through 06Z Friday night) Issued at 935 PM MST Thu Mar 4 2021 VFR conditions expected to prevail through the forecast period for all terminals. Current RADAR imagery has the main precipitation band from the low pressure cell a bit too far to the south to provide any significant showers across Southeastern Wyoming and the Nebraska Panhandle. This cell is expected to continually dig to the south/southeast, thus ending any precipitation chances for the region. && .FIRE WEATHER... Issued at 242 AM MST Thu Mar 4 2021 Elevated fire weather concerns going into the weekend after a passing low pressure system through CO today brings limited precipitation south of the I-80 corridor. Best QPF chances for the Sierra Madre Range with around 2" of snow possible. Min RHs through Saturday across the high plains from the upper teens to low 20s as warm and dry conditions set in once more. Remainder of the period for the high plains should expect to have min RHs in the 20 range. A quick shot of snow Sunday for Sierra Madre Range as next potential widespread precipitation Tuesday and Wednesday. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...None. NE...None. && $$ SHORT TERM...CLH LONG TERM...WM AVIATION...MD FIRE WEATHER...WM

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