Alert archive / Colorado / Snow Advisories in 2007
Snow Advisory 13, NWS Grand Junction, CO
NWS Grand Junction, CO issued this snow advisory at Apr 8, 2007, 4:04 AM MDT for 10 counties in Colorado. It took effect at Apr 8, 2007, 6:00 AM MDT. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Apr 8, 2007, 4:04 AM MDT (10:04 UTC)
- In effect from
- Apr 8, 2007, 6:00 AM MDT
- Expired
- Apr 9, 2007, 9:17 AM MDT
- In force
- 27 hr
- Issued by
- NWS Grand Junction, CO
Counties Archuleta County, CO, Dolores County, CO, Gunnison County, CO, Hinsdale County, CO, La Plata County, CO, Montezuma County, CO, Montrose County, CO, Ouray County, CO, San Juan County, CO, San Miguel County, CO
The radar
The Grand Junction radar (KGJX), 140 km from the middle of the area, began a volume at 10:03 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 00:00Z, 10.1 hours before the alert went out and 154 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
- 3185 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow advisory 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 snow advisory went out at Apr 8, 3:19 AM MDT, 45 minutes earlier.
Area forecast discussion, Apr 8, 3:19 AM MDT, 45 minutes before
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Snow Advisories in Colorado, 2007Every snow advisory in 2007
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.