Alert archive / Nebraska / Freeze Warnings in 2008
Freeze Warning 1, NWS Cheyenne, WY
NWS Cheyenne, WY issued this freeze warning at May 10, 2008, 4:04 AM MDT for 5 counties in Nebraska. It took effect at May 11, 2008, 3:00 AM MDT. It was in force for 5 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
- May 10, 2008, 4:04 AM MDT (10:04 UTC)
- In effect from
- May 11, 2008, 3:00 AM MDT
- Expired
- May 11, 2008, 8:00 AM MDT
- In force
- 5 hr
- Issued by
- NWS Cheyenne, WY
Counties Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Morrill County, NE, Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 161 km from the middle of the area, began a volume at 10:02 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 00:00Z, 10.1 hours before the alert went out and 231 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
- 33 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 3567 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze warning 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 freeze warning went out at May 9, 4:38 PM MDT, 11 hours 26 minutes earlier.
Area forecast discussion, May 9, 4:38 PM MDT, 11 hours 26 minutes before
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</html>Hazardous weather outlook, May 9, 4:42 PM MDT, 11 hours 22 minutes before
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</html>Nearby
Freeze Warnings in Nebraska, 2008Every freeze warning in 2008
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.