Alert archive / Minnesota / Winter Storm Warnings in 2009

Winter Storm Warning 3, NWS Duluth, MN

February 25, 20094 counties in Minnesota; 4 counties in Wisconsin

NWS Duluth, MN issued this winter storm warning at Feb 25, 2009, 3:45 PM CST for 4 counties in Minnesota; 4 counties in Wisconsin. It took effect at Feb 26, 2009, 10:00 AM CST. It was in force for 14 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: Feb 25, 2009, 3:45 PM CST (21:45 UTC)
In effect from: Feb 26, 2009, 10:00 AM CST
Expired: Feb 26, 2009, 11:50 PM CST
In force: 14 hr
Issued by: NWS Duluth, MN

Counties Aitkin County, MN, Cass County, MN, Crow Wing County, MN, Pine County, MN, Burnett County, WI, Price County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 76 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 170 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: 1110 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 116 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 winter storm 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 winter storm warning went out at Feb 25, 2:57 PM CST, 48 minutes earlier.

Area forecast discussion, Feb 25, 2:57 PM CST, 48 minutes before

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Hazardous weather outlook, Feb 25, 8:34 AM CST, 7 hours 11 minutes before

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In the hours before

Local storm report, Feb 25, 10:00 AM CST, 5 hours 45 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
Feb 25, 3:40 AM CST	Winter Storm Watch	DLH	Pine	12 hr
Feb 25, 3:45 PM CST	Winter Weather Advisory	DLH	Aitkin, Carlton, Cass, Cook, Crow Wing, Lake and 1 more	42 hr
Feb 25, 4:44 AM CST	Winter Weather Advisory	DLH	Ashland, Bayfield, Douglas, Iron, Price, Sawyer	4 hr

Nearby

Winter Storm Warnings in Minnesota, 2009 Winter Storm Warnings in Wisconsin, 2009 Every winter storm 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.