Alert archive / Colorado / Winter Storm Warnings in 2017
Winter Storm Warning 5, NWS Grand Junction, CO
NWS Grand Junction, CO issued this winter storm warning at Jan 18, 2017, 3:41 PM MST for 18 counties in Colorado; Grand County, San Juan County, Utah. It took effect at Jan 19, 2017, 2:00 PM MST. It was in force for 63 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 18, 2017, 3:41 PM MST (22:41 UTC)
- In effect from
- Jan 19, 2017, 2:00 PM MST
- Expired
- Jan 22, 2017, 4:30 AM MST
- In force
- 63 hr
- 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, Grand County, UT, San Juan County, UT
The radar
The Grand Junction radar (KGJX), 54 km from the middle of the area, began a volume at 22:47 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, 10.7 hours before the alert went out and 74 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
- 1066 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 61 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 Jan 18, 3:19 PM MST, 22 minutes earlier.
Area forecast discussion, Jan 18, 3:19 PM MST, 22 minutes before
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</html>Hazardous weather outlook, Jan 18, 4:25 AM MST, 11 hours 16 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 |
|---|---|---|---|---|
| Jan 17, 5:47 PM MST | Dense Fog Advisory | GJT | Moffat, Rio Blanco, Routt | 17 hr |
| Jan 18, 3:41 PM MST | Winter Storm Watch | GJT | Archuleta, Dolores, La Plata, Montezuma, San Miguel | 6 hr |
| Jan 18, 3:41 PM MST | Winter Weather Advisory | GJT | Delta, Dolores, Eagle, Garfield, Gunnison, Hinsdale and 8 more | 4 days |
Nearby
Winter Storm Warnings in Colorado, 2017Winter Storm Warnings in Utah, 2017Every winter storm warning in 2017
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.