Alert archive / Minnesota / Wind Chill Warnings in 2009

Wind Chill Warning 1, NWS Duluth, MN

January 12, 200910 counties in Minnesota; 5 counties in Wisconsin

NWS Duluth, MN issued this wind chill warning at Jan 12, 2009, 4:31 AM CST for 10 counties in Minnesota; 5 counties in Wisconsin. It took effect at Jan 12, 2009, 9:00 PM 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: Jan 12, 2009, 4:31 AM CST (10:31 UTC)
In effect from: Jan 12, 2009, 9:00 PM CST
Expired: Jan 13, 2009, 11:37 AM CST
In force: 15 hr
Issued by: NWS Duluth, MN

Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Cook County, MN, Crow Wing County, MN, Itasca County, MN, Koochiching County, MN, Lake County, MN, Pine County, MN, Saint Louis County, MN, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 22 km from the middle of the area, began a volume at 10:31 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, 10.5 hours before the alert went out and 234 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1251 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 140 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this wind chill warning went out at Jan 12, 3:49 AM CST, 42 minutes earlier.

Area forecast discussion, Jan 12, 3:49 AM CST, 42 minutes before

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The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 12, 3:48 PM CST	Small Craft Advisory	DLH		18 hr
Jan 12, 4:31 AM CST	Wind Chill Advisory	DLH	Ashland, Iron, Price	31 hr
Jan 12, 4:31 AM CST	Winter Weather Advisory	DLH	Iron	25 hr

Nearby

Wind Chill Warnings in Minnesota, 2009 Wind Chill Warnings in Wisconsin, 2009 Every wind chill warning 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.