Alert archive / Minnesota / Winter Weather Advisories in 2018
Winter Weather Advisory 15, NWS Twin Cities, MN
NWS Twin Cities, MN issued this winter weather advisory at Apr 2, 2018, 9:46 AM CDT for 31 counties in Minnesota; Barron County, Polk County, Saint Croix County, Wisconsin. It took effect at Apr 2, 2018, 1:00 PM CDT. It was in force for 36 hr.
The area
The counties it named.
The facts
- Issued
- Apr 2, 2018, 9:46 AM CDT (14:46 UTC)
- In effect from
- Apr 2, 2018, 1:00 PM CDT
- Expired
- Apr 4, 2018, 1:00 AM CDT
- In force
- 36 hr
- Issued by
- NWS Twin Cities, MN
All 34 counties
Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Douglas County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle 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, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Yellow Medicine County, MN, Barron County, WI, Polk County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 64 km from the middle of the area, began a volume at 14:49 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, 2.8 hours before the alert went out and 62 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1430 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Apr 2, 7:01 AM CDT, 2 hours 45 minutes earlier.
Area forecast discussion, Apr 2, 7:01 AM CDT, 2 hours 45 minutes before
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</html>Hazardous weather outlook, Apr 2, 4:16 AM CDT, 5 hours 30 minutes before
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Special weather statement, Apr 2, 4:05 AM CDT, 5 hours 41 minutes before
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</html>The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 4:00 AM CDT | Winter Storm Watch | MPX | Blue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 7 more | 10 hr |
| Apr 2, 11:14 AM CDT | Winter Storm Warning | MPX | Blue Earth, Brown, Carver, Dakota, Faribault, Freeborn and 17 more | 38 hr |
Nearby
Winter Weather Advisories in Minnesota, 2018Winter Weather Advisories in Wisconsin, 2018Every 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.