Alert archive / Minnesota / Wind Chill Advisories in 2011

Wind Chill Advisory 9, NWS Duluth, MN

January 31, 20119 counties in Minnesota

NWS Duluth, MN issued this wind chill advisory at Jan 31, 2011, 3:44 PM CST for 9 counties in Minnesota. It took effect at Feb 1, 2011, 12:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Jan 31, 2011, 3:44 PM CST (21:44 UTC)
In effect from
Feb 1, 2011, 12:00 AM CST
Expired
Feb 1, 2011, 8:58 AM CST
In force
9 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, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 72 km from the middle of the area, began a volume at 21:44 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, 9.7 hours before the alert went out and 149 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-pSkew-T log-p diagram, International Fa, MN at 12:00Z on 2011-01-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2011-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
1189 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
58 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 advisory 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 advisory went out at Jan 31, 3:19 PM CST, 25 minutes earlier.

Area forecast discussion, Jan 31, 3:19 PM CST, 25 minutes before
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Hazardous weather outlook, Jan 31, 1:15 PM CST, 2 hours 29 minutes before
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In the hours before

Local storm report, Jan 31, 11:04 AM CST, 4 hours 40 minutes before
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Local storm report, Jan 31, 12:59 PM CST, 2 hours 45 minutes before
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Local storm report, Jan 31, 1:49 PM CST, 1 hour 55 minutes before
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Local storm report, Jan 31, 2:45 PM CST, 59 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 31, 4:13 AM CSTWinter Weather AdvisoryDLHCarlton, Saint Louis5 hr
Jan 31, 8:58 AM CSTLake Effect Snow WarningDLHCarlton, Saint Louis12 hr

Nearby

Wind Chill Advisories in Minnesota, 2011Every wind chill 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.