Alert archive / Minnesota / Winter Weather Advisories in 2019

Winter Weather Advisory 33, NWS Twin Cities, MN

November 29, 201923 counties in Minnesota; 6 counties in Wisconsin

NWS Twin Cities, MN issued this winter weather advisory at Nov 29, 2019, 12:09 PM CST for 23 counties in Minnesota; 6 counties in Wisconsin. It took effect at Nov 29, 2019, 6:00 PM CST. It was in force for 45 hr.

The area

The counties it named.

The facts

Issued: Nov 29, 2019, 12:09 PM CST (18:09 UTC)
In effect from: Nov 29, 2019, 6:00 PM CST
Expired: Dec 1, 2019, 3:00 PM CST
In force: 45 hr
Issued by: NWS Twin Cities, MN

All 29 counties

Anoka County, MN, Blue Earth County, MN, Carver County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Ramsey County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 35 km from the middle of the area, began a volume at 18:13 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

Aberdeen, SD (KABR), launched 12:00Z, 6.2 hours before the alert went out and 399 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: 587 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 87 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 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 Nov 29, 12:05 PM CST, 4 minutes earlier.

Area forecast discussion, Nov 29, 12:05 PM CST, 4 minutes before

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Hazardous weather outlook, Nov 29, 5:43 AM CST, 6 hours 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 29, 3:32 AM CST	Winter Storm Warning	MPX	Anoka, Benton, Carver, Chippewa, Chisago, Douglas and 20 more	59 hr

Nearby

Winter Weather Advisories in Minnesota, 2019 Winter Weather Advisories in Wisconsin, 2019 Every winter weather advisory in 2019

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.