Alert archive / Colorado / Winter Storm Warnings in 2009
Winter Storm Warning 13, NWS Grand Junction, CO
NWS Grand Junction, CO issued this winter storm warning at Mar 31, 2009, 9:43 AM MDT for 10 counties in Colorado. It was in force for 35 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
- Mar 31, 2009, 9:43 AM MDT (15:43 UTC)
- Expired
- Apr 1, 2009, 8:48 PM MDT
- In force
- 35 hr
- Issued by
- NWS Grand Junction, CO
Counties Eagle County, CO, Garfield County, CO, Gunnison County, CO, Hinsdale County, CO, Moffat County, CO, Montrose County, CO, Ouray County, CO, Rio Blanco County, CO, Routt County, CO, San Miguel County, CO
The radar
The Grand Junction radar (KGJX), 47 km from the middle of the area, began a volume at 15:43 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
Grand Junction, CO (KGJT), launched 12:00Z, 3.7 hours before the alert went out and 71 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
- 1280 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 300 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 Mar 31, 3:39 AM MDT, 6 hours 4 minutes earlier.
Area forecast discussion, Mar 31, 3:39 AM MDT, 6 hours 4 minutes before
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</html>Hazardous weather outlook, Mar 31, 5:45 AM MDT, 3 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 545 AM MDT TUE MAR 31 2009 COZ001>014-017>023-UTZ022>025-027>029-011200- 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- 545 AM MDT TUE MAR 31 2009 ...SNOW IN THE COLORADO MOUNTAINS TONIGHT THROUGH WEDNESDAY... .DAY ONE...TODAY AND TONIGHT AREAS OF SNOW WILL CONTINUE OVER THE NORTHERN COLORADO MOUNTAINS TODAY. SNOW WILL INCREASE AND BECOME WIDESPREAD THIS EVENING OVER THE NORTHERN MOUNTAINS...AND SPREAD TO THE OTHER MOUNTAINS...AS WELL AS THE HIGHER COLORADO VALLEYS. A CHANCE OF SNOW WILL ALSO DEVELOP IN MANY OF THE LOWER VALLEYS LATE TONIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WIDESPREAD SNOW WILL CONTINUE OVER MUCH OF WESTERN COLORADO AND THE MOUNTAINS NORTHEAST UTAH ON WEDNESDAY. BY LATE WEDNESDAY AFTERNOON 5 TO 12 INCHES OF NEW SNOW WILL HAVE ACCUMULATED IN THE WESTERN COLORADO MOUNTAINS. THE NEXT STORM MOVES IN FRIDAY AND CONTINUES INTO SATURDAY BRINGING MOUNTAIN SNOW AND GUSTY WINDS TO EASTERN UTAH AND WESTERN COLORADO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY AND TONIGHT HOWEVER SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS. EH
The office that day
Everything else NWS Grand Junction, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 4:33 AM MDT | Winter Weather Advisory | GJT | Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more | 40 hr |
Nearby
Winter Storm Warnings in Colorado, 2009Every winter storm warning in 2009
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.