Alert archive / Iowa / Winter Storm Warnings in 2010
Winter Storm Warning 1, NWS La Crosse, WI
NWS La Crosse, WI issued this winter storm warning at Jan 6, 2010, 4:11 AM CST for Grant County, Wisconsin; 6 counties in Iowa. It took effect at Jan 6, 2010, 3:00 PM CST. It was in force for 27 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 6, 2010, 4:11 AM CST (10:11 UTC)
- In effect from
- Jan 6, 2010, 3:00 PM CST
- Expired
- Jan 7, 2010, 6:00 PM CST
- In force
- 27 hr
- Issued by
- NWS La Crosse, WI
Counties Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Grant County, WI
The radar
The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 10:16 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
Minneapolis, MN (KMPX), launched 00:00Z, 10.2 hours before the alert went out and 236 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
- 2183 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 35 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 La Crosse, WI wrote its last area forecast discussion before this winter storm warning went out at Jan 6, 3:42 AM CST, 29 minutes earlier.
Area forecast discussion, Jan 6, 3:42 AM CST, 29 minutes before
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</html>The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 6, 4:11 AM CST | Winter Weather Advisory | ARX | Adams, Crawford, Grant, Juneau, La Crosse, Monroe and 2 more | 38 hr |
Nearby
Winter Storm Warnings in Iowa, 2010Winter Storm Warnings in Wisconsin, 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.