Alert archive / Iowa / Blizzard Watches in 2009
Blizzard Watch 1, NWS La Crosse, WI
NWS La Crosse, WI issued this blizzard watch at Jan 11, 2009, 3:24 AM CST for 4 counties in Iowa; Dodge County, Mower County, Minnesota. It took effect at Jan 12, 2009, 3:00 PM CST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 11, 2009, 3:24 AM CST (09:24 UTC)
- In effect from
- Jan 12, 2009, 3:00 PM CST
- Expired
- Jan 12, 2009, 3:41 AM CST
- In force
- Issued by
- NWS La Crosse, WI
Counties Chickasaw County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Dodge County, MN, Mower County, MN
The radar
The La Crosse radar (KARX), 125 km from the middle of the area, began a volume at 09:24 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, 9.4 hours before the alert went out and 176 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
- 1318 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 11, 3:35 PM CST | Winter Weather Advisory | ARX | Adams, Buffalo, Crawford, Grant, Jackson, Juneau and 5 more | 32 hr |
Nearby
Blizzard Watches in Iowa, 2009Blizzard Watches in Minnesota, 2009Every blizzard watch in 2009
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.