Alert archive / Minnesota / Blizzard Watches in 2011

Blizzard Watch 1, NWS Duluth, MN

March 20, 2011Carlton County, Lake County, Saint Louis County, Minnesota; Douglas County, Wisconsin

NWS Duluth, MN issued this blizzard watch at Mar 20, 2011, 4:03 PM CDT for Carlton County, Lake County, Saint Louis County, Minnesota; Douglas County, Wisconsin. It took effect at Mar 22, 2011, 7:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Mar 20, 2011, 4:03 PM CDT (21:03 UTC)
In effect from: Mar 22, 2011, 7:00 AM CDT
Expired: Mar 21, 2011, 3:33 PM CDT
In force
Issued by: NWS Duluth, MN

Counties Carlton County, MN, Lake County, MN, Saint Louis County, MN, Douglas County, WI

The radar

The Duluth radar (KDLH), 24 km from the middle of the area, began a volume at 21:03 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

International Fa, MN (KINL), launched 12:00Z, 9.1 hours before the alert went out and 192 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: 464 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 406 m²/s²
0-3 km storm-relative helicity: 416 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 blizzard watch 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 blizzard watch went out at Mar 20, 3:21 PM CDT, 42 minutes earlier.

Area forecast discussion, Mar 20, 3:21 PM CDT, 42 minutes before

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Hazardous weather outlook, Mar 20, 3:46 PM CDT, 17 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
Mar 20, 2:44 AM CDT	Winter Weather Advisory	DLH	Cook, Lake, Saint Louis	18 hr
Mar 20, 11:39 AM CDT	Dense Fog Advisory	DLH	Aitkin, Carlton, Cass, Crow Wing, Pine, Saint Louis	13 hr
Mar 20, 4:03 PM CDT	Winter Storm Watch	DLH	Aitkin, Cass, Cook, Crow Wing, Itasca, Koochiching and 3 more	24 hr

Nearby

Blizzard Watches in Minnesota, 2011 Blizzard Watches in Wisconsin, 2011 Every blizzard watch 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.