Storm Summary Number 1 for Major Central Rockies and central High
Plains Winter Storm
NWS Weather Prediction Center College Park MD
900 AM MDT Sun Mar 14 2021

...Heavy snow and blizzard conditions will continue over the
Central Rockies and central High Plains today and into the early
morning hours...

Blizzard Warnings are in effect for southeastern Wyoming, western
Nebraska, and southwestern South Dakota.

Winter Storm Warnings are in effect for northeast Utah, central
Colorado, much of south and east Wyoming, northwest Nebraska,
portions of South Dakota, southwest Minnesota, and northwest Iowa.

Winter Weather Advisories are in effect for portions of the
Central Great Basin, Central/Southern Rockies, Central/Southern
Plains and the Upper/Middle Mississippi Valley.

For a detailed graphical depiction of the latest watches, warnings
and advisories, please see www.weather.gov

At 800 AM MDT...A primary low pressure center was located over
eastern Colorado, at approximately 38.8N, 103 W, with a central
pressure of 999mb, or 29.5 inches of mercury. An occluded front
extended to the east into Kansas, while a secondary low pressure
center was located to its west in central Colorado at
approximately 39.1N, 106W, with a central pressure of 1000mb.
Multiple shortwave troughs extending to the north, west, and south
emanated from this low. Surface observations and doppler radar
indicate that moderate to heavy snow was falling between as well
as to the north and south of these lows, while rain was falling in
the warmer air to the east.

...Selected preliminary Storm Total Snowfall in inches from 1100
AM MDT Sat Mar 13 through 800 AM MDT Sun Mar 14...

...COLORADO...
VIRGINIA DALE                        26.0                    
RED FEATHER LAKES 7 NW               25.0                    
SILVER PLUME 3 SSE                   20.0                    
CAMPION 1 SE                         15.0                    
ESTES PARK 2 S                       14.3                    
LOVELAND 1.5 N                       14.0                    
GOLDEN                               12.6                    
BRECKENRIDGE                         12.5                    
BOULDER 2 SSW                        11.1                    
DENVER INTL AIRPORT                  11.1                    
FORT COLLINS 1 NE                    11.0                    
ASPEN SPRINGS 1 W                    10.2                    
LONGMONT 3 ENE                       10.0                    
SAWPIT 5 E                            9.8                    
GREELEY 2 E                           8.2                    
CANON CITY 22 NW                      8.0                    
DENVER 2 E                            6.2                    
LOUISVILLE 2 WSW                      5.0                    

...NEBRASKA...
HARRISBURG 9 SE                      16.5                    
KIMBALL 10 NE                        12.3                    
GERING 8 S                            4.0                    
LYMAN 9 SE                            2.5                    

...NEW MEXICO...
TOADLENA 5 SW                         6.0                    
CANNON PLAZA 11 NNW                   5.0                    
ARROYO SECO 8 NE                      3.0                    
SAN MIGUEL 8 SSW                      3.0                    

...UTAH...
MILFORD                              17.0                    
TORREY                               10.0                    
BRIGHTON                              9.0                    
ALPINE                                8.0                    
DRAPER                                8.0                    
ST. GEORGE                            7.0                    
BEAVER                                6.5                    
PARK CITY                             4.5                    
PROVO                                 1.9                    

...WYOMING...
WINDY PEAK 1 SSW                     52.5                    
W DEEP CREEK CAMPGROUND              32.0                    
ROB ROY RESERVIOR 2 NE               27.0                    
CHEYENNE                             26.0                    
NASH FORK CAMPGROUND                 22.5                    
CAMPBELL CREEK CAM 2 SW              20.4                    
SUGAR LOAF CAMPGROUND 3 WNW          18.0                    
LARAMIE                              12.0                    
DOUGLAS 4 WSW                        11.0                    
RAWLINS 1 NNW                         8.0                    
BUFORD 5 ESE                          7.5                    
CENTENNIAL                            6.0                    

...Selected preliminary Storm Total Snowfall in inches where the
event has ended...

...ARIZONA...
MOUNTAINAIRE                          7.5                    
HOTEVILLA                             6.0                    
STAR VALLEY                           6.0                    
TSAILE 1 SW                           5.6                    
FLAGSTAFF AIRPORT                     5.4                    
BELLEMONT                             4.8                    
FOREST LAKES                          4.0                    


Over the next 24 hours the low pressure system will continue a
slow progression to the east, weakening with time. Moisture
sourced from the Gulf of Mexico will work in tandem with cool air
and shortwave energy to the north and east of the surface low
pressure center to keep snowfall rates high (1-2"/hr) over the
Central Rockies and central High Plains overnight. Strong winds
gusting from 30 to 40 mph are expected to accompany these high
snowfall rates, producing blizzard conditions in some areas. This
will make road and air travel difficult if not impossible.
Snowfall over the Central Rockies and central High Plains is
expected to end in the early hours tomorrow, having moved on to
the eastern Plains and Upper Midwest where more modest snowfall
rates and amounts are expected. Once all is said and done, one to
two feet of snow will have likely accumulated along the Colorado
Front Range, Wyoming Laramie Range, and in the surrounding areas
of the I-25 urban corridor, with some isolated areas potentially
receiving over three feet.

The next Storm Summary will be issued by the Weather Prediction
Center at 900 AM MDT Mon Mar 15 2021. Please refer to your local
National Weather Service office for additional information on this
event.

Zavadoff