Alert archive / Colorado / Winter Storm Warnings in 2015
Winter Storm Warning 4, NWS Grand Junction, CO
NWS Grand Junction, CO issued this winter storm warning at Feb 26, 2015, 2:12 PM MST for 18 counties in Colorado; 4 counties in Utah. It took effect at Feb 27, 2015, 12:00 PM MST. It was in force for 5 days. 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 26, 2015, 2:12 PM MST (21:12 UTC)
- In effect from
- Feb 27, 2015, 12:00 PM MST
- Expired
- Mar 4, 2015, 7:47 AM MST
- In force
- 5 days
- 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 21:17 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.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 9.2 hours before the alert went out and 435 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 861 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 152 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 26, 10:09 AM MST, 4 hours 3 minutes earlier.
Area forecast discussion, Feb 26, 10:09 AM MST, 4 hours 3 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 531 AM MST THU FEB 26 2015 COZ001>014-017>023-UTZ022>025-027>029-271245- 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-FLATTOPS- 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- 531 AM MST THU FEB 26 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SNOW SHOWERS MAINLY OVER THE MOUNTAINS THIS AFTERNOON WILL BECOME MORE NUMEROUS TONIGHT AND IMPACT TRAVEL OVER THE HIGH MOUNTAIN PASSES. ONE TO 3 INCHES OF MOUNTAIN SNOW IS EXPECTED FROM THESE SNOW SHOWERS COME FRIDAY MORNING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ANOTHER SIGNIFICANT STORM IS POSSIBLE ACROSS THE SOUTHERN MOUNTAINS AND FOUR CORNERS REGION FROM LATE FRIDAY THROUGH EARLY NEXT WEEK. STORM TOTAL ACCUMULATIONS FOR THE SAN JUAN MOUNTAINS OF 1 TO 4 FEET ARE POSSIBLE WITH THE POTENTIAL FOR AMOUNTS OF A FOOT OR MORE IN THE FOOTHILL AREAS TO THE SOUTH. SIGNIFICANT SNOWFALL IS ALSO POSSIBLE ACROSS THE CENTRAL COLORADO MOUNTAINS AND THE LA SAL AND ABAJO MOUNTAINS OF SOUTHEAST UTAH AND ADJACENT VALLEYS. STAY UPDATED ON THIS POTENTIALLY SIGNIFICANT WINTER STORM BY VISITING WEATHER.GOV/GJT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
In the hours before
Local storm report, Feb 26, 12:57 PM MST, 1 hour 15 minutes before
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</html>Local storm report, Feb 26, 12:58 PM MST, 1 hour 14 minutes before
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</html>Local storm report, Feb 26, 12:59 PM MST, 1 hour 13 minutes before
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</html>Local storm report, Feb 26, 1:00 PM MST, 1 hour 12 minutes before
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</html>Local storm report, Feb 26, 1:01 PM MST, 1 hour 11 minutes before
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</html>Local storm report, Feb 26, 1:02 PM MST, 1 hour 10 minutes before
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</html>The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 2:12 PM MST | Winter Weather Advisory | GJT | Dolores, Eagle, Garfield, Gunnison, Montezuma, Montrose and 2 more | 3 days |
Nearby
Winter Storm Warnings in Colorado, 2015Winter Storm Warnings in Utah, 2015Every winter storm warning in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.