Alert archive / Minnesota / Winter Weather Advisories in 2009
Winter Weather Advisory 11, NWS Twin Cities, MN
NWS Twin Cities, MN issued this winter weather advisory at Dec 7, 2009, 4:22 PM CST for 21 counties in Minnesota. It took effect at Dec 8, 2009, 12:00 PM CST. It was in force for 28 hr.
The area
The counties it named.
The facts
- Issued
- Dec 7, 2009, 4:22 PM CST (22:22 UTC)
- In effect from
- Dec 8, 2009, 12:00 PM CST
- Expired
- Dec 9, 2009, 3:42 PM CST
- In force
- 28 hr
- Issued by
- NWS Twin Cities, MN
All 21 counties
Benton County, MN, Chippewa County, MN, Douglas County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Wright County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 110 km from the middle of the area, began a volume at 22:25 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 12:00Z, 10.4 hours before the alert went out and 108 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
- 680 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 7, 4:22 PM CST | Blizzard Warning | MPX | Blue Earth, Brown, Carver, Chippewa, Dakota, Faribault and 16 more | 47 hr |
| Dec 7, 4:22 PM CST | Winter Storm Warning | MPX | Anoka, Brown, Carver, Chisago, Dakota, Goodhue and 12 more | 47 hr |
Nearby
Winter Weather Advisories in Minnesota, 2009Every winter weather advisory 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.