Alert archive / Minnesota / Winter Weather Advisories in 2013

Winter Weather Advisory 14, NWS Twin Cities, MN

March 8, 201322 counties in Minnesota; 9 counties in Wisconsin

NWS Twin Cities, MN issued this winter weather advisory at Mar 8, 2013, 12:22 PM CST for 22 counties in Minnesota; 9 counties in Wisconsin. It took effect at Mar 8, 2013, 10:00 PM CST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Mar 8, 2013, 12:22 PM CST (18:22 UTC)
In effect from: Mar 8, 2013, 10:00 PM CST
Expired: Mar 9, 2013, 10:50 AM CST
In force: 13 hr
Issued by: NWS Twin Cities, MN

All 31 counties

Anoka County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 30 km from the middle of the area, began a volume at 18:26 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, 6.4 hours before the alert went out and 33 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: 716 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 272 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 Mar 8, 5:28 AM CST, 6 hours 54 minutes earlier.

Area forecast discussion, Mar 8, 5:28 AM CST, 6 hours 54 minutes before

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Hazardous weather outlook, Mar 8, 3:49 AM CST, 8 hours 33 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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
Mar 8, 12:22 PM CST	Winter Storm Warning	MPX	Benton, Chippewa, Douglas, Kandiyohi, Lac qui Parle, Mille Lacs and 7 more	36 hr

Nearby

Winter Weather Advisories in Minnesota, 2013 Winter Weather Advisories in Wisconsin, 2013 Every winter weather advisory in 2013

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.