Alert archive / Colorado / Winter Storm Warnings in 2011

Winter Storm Warning 7, NWS Grand Junction, CO

February 18, 201118 counties in Colorado; 4 counties in Utah

NWS Grand Junction, CO issued this winter storm warning at Feb 18, 2011, 1:04 PM MST for 18 counties in Colorado; 4 counties in Utah. It took effect at Feb 19, 2011, 12:00 AM MST. It was in force for 48 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 18, 2011, 1:04 PM MST (20:04 UTC)
In effect from
Feb 19, 2011, 12:00 AM MST
Expired
Feb 20, 2011, 11:55 PM MST
In force
48 hr
Issued by
NWS Grand Junction, CO
All 22 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, Grand County, UT, San Juan County, UT, Uintah County, UT

The radar

The Grand Junction radar (KGJX), 32 km from the middle of the area, began a volume at 20:09 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 warning 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 warning went out at Feb 18, 4:00 AM MST, 9 hours 4 minutes earlier.

Area forecast discussion, Feb 18, 4:00 AM MST, 9 hours 4 minutes before
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Hazardous weather outlook, Feb 18, 6:00 AM MST, 7 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
600 AM MST FRI FEB 18 2011

COZ001>014-017>023-UTZ022>025-027>029-191300-
ANIMAS RIVER BASIN-ARCHES/GRAND FLAT-CANYONLANDS/NATURAL BRIDGES-
CENTRAL COLORADO RIVER BASIN-
CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN-
CENTRAL YAMPA RIVER BASIN-DEBEQUE TO SILT CORRIDOR-
EASTERN UINTA BASIN-EASTERN UINTA MOUNTAINS-
ELKHEAD AND PARK MOUNTAINS-FLAT TOPS-
FOUR CORNERS/UPPER DOLORES RIVER-
GORE AND ELK MOUNTAINS/CENTRAL MOUNTAINS-GRAND AND BATTLEMENT MESAS-
GRAND VALLEY-LA SAL AND ABAJO MOUNTAINS-LOWER YAMPA RIVER BASIN-
NORTHWEST SAN JUAN MOUNTAINS-PARADOX VALLEY/LOWER DOLORES RIVER-
ROAN AND TAVAPUTS PLATEAUS-SAN JUAN RIVER BASIN-SOUTHEAST UTAH-
SOUTHWEST SAN JUAN MOUNTAINS-TAVAPUTS PLATEAU-
UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-UPPER GUNNISON RIVER VALLEY-
UPPER YAMPA RIVER BASIN-WEST ELK AND SAWATCH MOUNTAINS-
600 AM MST FRI FEB 18 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN
COLORADO.

.DAY ONE...TODAY AND TONIGHT

HAZARDOUS WEATHER IS NOT EXPECTED TODAY. THE CHANCE OF SNOW BEGINS
TO INCREASE OVER THE SOUTHERN MOUNTAINS TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WINTER STORM WILL BRING SNOW AND WIND TO THE MOUNTAINS SATURDAY
INTO SUNDAY AND CREATE HAZARDOUS DRIVING CONDITIONS IN THE HIGH
COUNTRY. RAIN AND SNOW IS EXPECTED IN THE VALLEYS. ISOLATED
THUNDERSTORMS ARE POSSIBLE IN SOUTHEAST UTAH AND SOUTHWEST COLORADO
SATURDAY AFTERNOON.

THE REGION WILL BE IN BETWEEN WEATHER SYSTEMS MONDAY AND TUESDAY...
BUT ANOTHER WINTER STORM WILL BE ARRIVING ON WEDNESDAY AND
CONTINUING INTO THURSDAY.  SIGNIFICANT SNOW ACCUMULATIONS IN THE
MOUNTAINS WILL BE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT. HOWEVER...
SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS OR SIGNIFICANT
WIND GUSTS.

TGJT

In the hours before

Local storm report, Feb 18, 7:36 AM MST, 5 hours 28 minutes before
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Local storm report, Feb 18, 8:26 AM MST, 4 hours 38 minutes before
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Nearby

Winter Storm Warnings in Colorado, 2011Winter Storm Warnings in Utah, 2011Every winter storm warning in 2011

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.