Alert archive / Minnesota / Winter Weather Advisories in 2018

Winter Weather Advisory 14, NWS Twin Cities, MN

March 30, 201816 counties in Minnesota; 7 counties in Wisconsin

NWS Twin Cities, MN issued this winter weather advisory at Mar 30, 2018, 3:49 AM CDT for 16 counties in Minnesota; 7 counties in Wisconsin. It took effect at Mar 30, 2018, 10:00 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Mar 30, 2018, 3:49 AM CDT (08:49 UTC)
In effect from: Mar 30, 2018, 10:00 PM CDT
Expired: Mar 31, 2018, 10:00 AM CDT
In force: 12 hr
Issued by: NWS Twin Cities, MN

All 23 counties

Anoka County, MN, Benton County, MN, Chisago County, MN, Douglas County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Meeker County, MN, Pope County, MN, Ramsey County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Pierce County, WI, Polk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 47 km from the middle of the area, began a volume at 08:50 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 00:00Z, 8.8 hours before the alert went out and 385 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: 1454 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -45 m²/s²
0-3 km storm-relative helicity: -8 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 29, 10:25 PM CDT, 5 hours 24 minutes earlier.

Area forecast discussion, Mar 29, 10:25 PM CDT, 5 hours 24 minutes before

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Hazardous weather outlook, Mar 29, 12:08 PM CDT, 15 hours 41 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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 29, 7:47 PM CDT	River Flood Warning	MPX	Brown	4 days
Mar 30, 3:49 AM CDT	Winter Storm Warning	MPX	Anoka, Benton, Chisago, Douglas, Isanti, Kanabec and 6 more	30 hr
Mar 30, 4:05 PM CDT	Wind Advisory	MPX	Blue Earth, Brown, Chippewa, Faribault, Freeborn, Kandiyohi and 11 more	21 hr

Nearby

Winter Weather Advisories in Minnesota, 2018 Winter Weather Advisories in Wisconsin, 2018 Every winter weather advisory in 2018

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.