Alert archive / Minnesota / Winter Weather Advisories in 2017

Winter Weather Advisory 15, NWS Twin Cities, MN

December 3, 201734 counties in Minnesota; 4 counties in Wisconsin

NWS Twin Cities, MN issued this winter weather advisory at Dec 3, 2017, 3:22 PM CST for 34 counties in Minnesota; 4 counties in Wisconsin. It took effect at Dec 4, 2017, 3:00 PM CST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Dec 3, 2017, 3:22 PM CST (21:22 UTC)
In effect from: Dec 4, 2017, 3:00 PM CST
Expired: Dec 5, 2017, 4:00 AM CST
In force: 13 hr
Issued by: NWS Twin Cities, MN

All 38 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Douglas County, MN, Faribault County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Todd County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Barron County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 26 km from the middle of the area, began a volume at 21:19 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, 9.4 hours before the alert went out and 360 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: 2288 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 6 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 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 Dec 3, 3:07 PM CST, 15 minutes earlier.

Area forecast discussion, Dec 3, 3:07 PM CST, 15 minutes before

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Hazardous weather outlook, Dec 3, 11:25 AM CST, 3 hours 57 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
Dec 3, 3:42 AM CST	Winter Storm Watch	MPX	Chippewa, Douglas, Lac qui Parle, Pope, Stevens, Swift and 1 more	12 hr
Dec 3, 3:10 PM CST	Wind Advisory	MPX	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 19 more	39 hr
Dec 3, 3:22 PM CST	Winter Storm Warning	MPX	Chippewa, Douglas, Lac qui Parle, Pope, Stevens, Swift and 2 more	33 hr

Nearby

Winter Weather Advisories in Minnesota, 2017 Winter Weather Advisories in Wisconsin, 2017 Every winter weather advisory in 2017

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.