60cm of snow and 100kmh+ wind expected across High Plains

"Forecast storm total snowfall as of 800 PM on Monday, March 11" -NWS Cheyenne. WY

...MAJOR WINTER STORM AND BLIZZARD CONDITIONS LIKELY BEGINNING EARLY WEDNESDAY MORNING... ...A MAJOR WINTER STORM WILL BRING HEAVY SNOW AND STRONG WINDS TO SOUTHEASTERN WYOMING AND WESTERN NEBRASKA EARLY WEDNESDAY MORNING THROUGH THURSDAY EVENING...

"Heavy snow is expected Wednesday into Thursday. Note that this snowfall forecast may change as the storm gets closer." -NWS Rapid City, SD

NWS Rapid City, SD

...POTENTIAL BLIZZARD TO IMPACT MUCH OF THE REGION... .A potent winter storm system will push into the region early Wednesday. This system will produce heavy snow and strong winds in the region. Freezing rain and sleet will be possible toward central South Dakota. Strong winds gusting over 60 mph and heavy snow could create blizzard conditions to much of the area. The track of this system remains uncertain with a shift in forecast track and the resulting heavy snow area likely. Persons in the watch area are encouraged to remain up to date on the track of this system as travel may be impossible by Wednesday night.

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH THURSDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 10 to 20 inches possible. Winds could gust as high as 40 mph. * WHERE...In South Dakota, the Northern Black Hills and the Central Black Hills. In Wyoming, the Wyoming Black Hills. * WHEN...From late Tuesday night through Thursday afternoon. * ADDITIONAL DETAILS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute.

NAM 3km precipitation depiction from Wednesday into Thursday

NWS Cheyenne, WY

...BLIZZARD WARNING IN EFFECT EARLY WEDNESDAY MORNING TO 6 PM MDT THURSDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 10 to 18 inches expected with periods of intense snowfall rates. Winds gusting as high as 60 mph. Period of most intense winds begins Wednesday afternoon. * WHERE...Most of Goshen and Laramie Counties in far southeast Wyoming and the entire western Nebraska Panhandle. * WHEN...From early Wednesday morning to 6 PM MDT Thursday. * ADDITIONAL DETAILS...Travel could be very difficult to impossible with snowpacked roads. Blowing snow could significantly reduce visibility causing whiteout conditions. The hazardous conditions could impact the morning or evening commute. Strong winds could cause tree damage and sporadic power outages.

"630 PM MST Monday, March 11 -- A major, potentially crippling winter storm is expected to impact all of southeast Wyoming and the western Nebraska Panhandle from late Tuesday night through Thursday. Blizzard & Winter Storm Warnings are already in effect. This is a very serious situation! PREPARE NOW!" -NWS Cheyenne, WY

NWS Denver, CO

...BLIZZARD WARNING IN EFFECT FROM NOON WEDNESDAY TO 6 AM MDT THURSDAY...

...Blizzard expected to develop over portions of northeast Colorado Wednesday afternoon and Wednesday night... .Heavy snow and very strong winds will develop over most of northeast Colorado Wednesday afternoon and Wednesday night. The most severe conditions are likely to develop just east of the I-25 Corridor where the heaviest snow is expected to fall. Power outages and wind damage will also be possible as winds gust to between 60 and 70 mph.

* WHAT...Blizzard conditions expected. Total snow accumulations of 6 to 12 inches expected. Winds gusting as high as 65 mph. * WHERE...Portions of east central and northeast Colorado. * WHEN...From noon Wednesday to 6 AM MDT Thursday. * ADDITIONAL DETAILS...Travel could be very difficult or impossible. Avoid travel Wednesday afternoon and Wednesday night. Widespread blowing snow will significantly reduce visibility. Very strong winds could cause extensive tree damage and result in scattered to widespread power outages.

"Current Winter Highlights: A significant winter storm will begin to affect northern and eastern Colorado Tuesday afternoon through Thursday morning. A Blizzard Warning is in effect for a portion of the northeast Plains with a Winter Storm Watch for the northern and central mountains along with Front Range Foothills and I-25 Urban Corridor. The main impacts across the northeast plains will be the combination of heavy snow and strong northerly winds to 65 mph causing extensive blowing and drifting snow. Along the Front Range, expect snow accumulations of 3 to 8 inches with northwest winds to 45 mph at times." -NWS Denver, CO