Alert archive / Nebraska / Winter Storm Warnings in 2010
Winter Storm Warning 2, NWS Omaha, NE
NWS Omaha, NE issued this winter storm warning at Feb 20, 2010, 4:00 AM CST for 7 counties in Nebraska; 4 counties in Iowa. It took effect at Feb 21, 2010, 12:00 AM CST. It was in force for 15 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
- Feb 20, 2010, 4:00 AM CST (10:00 UTC)
- In effect from
- Feb 21, 2010, 12:00 AM CST
- Expired
- Feb 21, 2010, 3:04 PM CST
- In force
- 15 hr
- Issued by
- NWS Omaha, NE
Counties Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE
The radar
The Omaha radar (KOAX), 96 km from the middle of the area, began a volume at 10:01 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
Topeka, KS (KTOP), launched 00:00Z, 10.0 hours before the alert went out and 171 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
- 588 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 84 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 Omaha, NE wrote its last area forecast discussion before this winter storm warning went out at Feb 20, 3:30 AM CST, 30 minutes earlier.
Area forecast discussion, Feb 20, 3:30 AM CST, 30 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 3:00 PM CST | Winter Weather Advisory | OAX | Butler, Cass, Colfax, Dodge, Douglas, Gage and 13 more | 27 hr |
Nearby
Winter Storm Warnings in Nebraska, 2010Winter Storm Warnings in Iowa, 2010Every winter storm warning in 2010
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.