Alert archive / Minnesota / Winter Weather Advisories in 2011
Winter Weather Advisory 42, NWS Twin Cities, MN
NWS Twin Cities, MN issued this winter weather advisory at Dec 29, 2011, 9:17 PM CST for 16 counties in Minnesota. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 29, 2011, 9:17 PM CST (03:17 UTC)
- Expired
- Dec 30, 2011, 9:00 AM CST
- In force
- 12 hr
- Issued by
- NWS Twin Cities, MN
Counties Blue Earth County, MN, Brown County, MN, Douglas County, MN, Faribault County, MN, Freeborn County, MN, Kandiyohi County, MN, Le Sueur County, MN, Martin County, MN, Nicollet County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Sibley County, MN, Steele County, MN, Waseca County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 83 km from the middle of the area, began a volume at 03:15 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, 3.3 hours before the alert went out and 81 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
- 1287 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 52 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 weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Twin Cities, MN wrote its last area forecast discussion before this winter weather advisory went out at Dec 29, 3:20 PM CST, 5 hours 57 minutes earlier.
Area forecast discussion, Dec 29, 3:20 PM CST, 5 hours 57 minutes before
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</html>Hazardous weather outlook, Dec 29, 11:37 AM CST, 9 hours 40 minutes before
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<div class="status" id="status">Temporary Notice</div>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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</html>The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 9:17 PM CST | Freezing Rain Advisory | MPX | Blue Earth, Brown, Chippewa, Faribault, Lac qui Parle, Martin and 5 more | 6 hr |
Nearby
Winter Weather Advisories in Minnesota, 2011Every winter weather advisory in 2011
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.