Alert archive / Nebraska / Snow Advisories in 2007
Snow Advisory 5, NWS Cheyenne, WY
NWS Cheyenne, WY issued this snow advisory at Apr 12, 2007, 10:00 AM MDT for Cheyenne County, Kimball County, Nebraska. It took effect at Apr 12, 2007, 9:00 PM MDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 12, 2007, 10:00 AM MDT (16:00 UTC)
- In effect from
- Apr 12, 2007, 9:00 PM MDT
- Expired
- Apr 13, 2007, 3:14 AM MDT
- In force
- 6 hr
- Issued by
- NWS Cheyenne, WY
Counties Cheyenne County, NE, Kimball County, NE
The radar
The Cheyenne radar (KCYS), 122 km from the middle of the area, began a volume at 16:03 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
Denver, CO (KDNR), launched 12:00Z, 4.0 hours before the alert went out and 149 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
- 1335 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 157 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 Cheyenne, WY wrote its last area forecast discussion before this snow advisory went out at Apr 11, 1:53 PM MDT, 20 hours 7 minutes earlier.
Area forecast discussion, Apr 11, 1:53 PM MDT, 20 hours 7 minutes before
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</html>Hazardous weather outlook, Apr 11, 1:57 PM MDT, 20 hours 3 minutes before
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</html>Nearby
Snow Advisories in Nebraska, 2007Snow Advisories in Wyoming, 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.