Alert archive / Colorado / Winter Storm Watches in 2021

Winter Storm Watch 2, NWS Grand Junction, CO

March 11, 202118 counties in Colorado; Daggett County, Uintah County, Utah

NWS Grand Junction, CO issued this winter storm watch at Mar 11, 2021, 3:22 AM MST for 18 counties in Colorado; Daggett County, Uintah County, Utah. It took effect at Mar 12, 2021, 5:00 PM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Mar 11, 2021, 3:22 AM MST (10:22 UTC)
In effect from
Mar 12, 2021, 5:00 PM MST
Expired
Mar 12, 2021, 3:47 AM MST
In force
Issued by
NWS Grand Junction, CO

Counties Archuleta County, CO, Delta County, CO, Dolores County, CO, Eagle County, CO, Garfield County, CO, Gunnison County, CO, Hinsdale County, CO, La Plata County, CO, Mesa County, CO, Moffat County, CO, Montezuma County, CO, Montrose County, CO, Ouray County, CO, Pitkin County, CO, Rio Blanco County, CO, Routt County, CO, San Juan County, CO, San Miguel County, CO, Daggett County, UT, Uintah County, UT

The radar

The Grand Junction radar (KGJX), 34 km from the middle of the area, began a volume at 10:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Junction, CO wrote its last area forecast discussion before this winter storm watch went out at Mar 10, 10:36 PM MST, 4 hours 46 minutes earlier.

Area forecast discussion, Mar 10, 10:36 PM MST, 4 hours 46 minutes before
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Hazardous weather outlook, Mar 10, 5:03 AM MST, 22 hours 19 minutes before
Hazardous Weather Outlook
National Weather Service Grand Junction CO
503 AM MST Wed Mar 10 2021

COZ001>014-017>023-UTZ022>025-027>029-111215-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide-
Northwest San Juan Mountains-Southwest San Juan Mountains-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
503 AM MST Wed Mar 10 2021

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...Today and Tonight

Showers will continue through early afternoon across northwest
and west-central Colorado with mountain snow and rain/snow mix in
the higher surrounding valleys. Expect breezy conditions and
cooler temperatures closer to seasonable levels with mostly dry
conditions south of I-70 this afternoon.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The next Pacific storm will move inland and impact much of Rocky
Mountain region through the end of the week into the weekend with
cooler and unsettled weather. Expect at least travel impacts in
snow across the high country with rain mainly impacting the lower
elevations.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Local storm report, Mar 10, 10:32 PM MST, 4 hours 50 minutes before
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Nearby

Winter Storm Watches in Colorado, 2021Winter Storm Watches in Utah, 2021Every winter storm watch in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.