Alert archive / Colorado / Winter Storm Warnings in 2014

Winter Storm Warning 4, NWS Grand Junction, CO

January 28, 201418 counties in Colorado; 4 counties in Utah

NWS Grand Junction, CO issued this winter storm warning at Jan 28, 2014, 3:04 PM MST for 18 counties in Colorado; 4 counties in Utah. It took effect at Jan 29, 2014, 12:00 PM MST. It was in force for 65 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: Jan 28, 2014, 3:04 PM MST (22:04 UTC)
In effect from: Jan 29, 2014, 12:00 PM MST
Expired: Feb 1, 2014, 5:00 AM MST
In force: 65 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 22:03 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, 10.1 hours before the alert went out and 51 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2436 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 288 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jan 28, 9:56 AM MST, 5 hours 8 minutes earlier.

Area forecast discussion, Jan 28, 9:56 AM MST, 5 hours 8 minutes before

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Hazardous weather outlook, Jan 28, 5:35 AM MST, 9 hours 29 minutes before

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The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 28, 3:04 PM MST	Winter Weather Advisory	GJT	Daggett, Uintah	12 hr

Nearby

Winter Storm Warnings in Colorado, 2014 Winter Storm Warnings in Utah, 2014 Every winter storm warning in 2014

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.