Alert archive / Minnesota / Winter Weather Advisories in 2021

Winter Weather Advisory 1, NWS Grand Forks, ND

January 13, 202117 counties in North Dakota; 18 counties in Minnesota

NWS Grand Forks, ND issued this winter weather advisory at Jan 13, 2021, 1:00 PM CST for 17 counties in North Dakota; 18 counties in Minnesota. It took effect at Jan 13, 2021, 9:00 PM CST. It was in force for 45 hr.

The area

The counties it named.

The facts

Issued: Jan 13, 2021, 1:00 PM CST (19:00 UTC)
In effect from: Jan 13, 2021, 9:00 PM CST
Expired: Jan 15, 2021, 6:00 PM CST
In force: 45 hr
Issued by: NWS Grand Forks, ND

All 35 counties

Becker County, MN, Beltrami County, MN, Clay County, MN, Clearwater County, MN, Grant County, MN, Hubbard County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 32 km from the middle of the area, began a volume at 19:03 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, 7.0 hours before the alert went out and 317 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: 2309 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 194 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 Grand Forks, ND wrote its last area forecast discussion before this winter weather advisory went out at Jan 13, 12:57 PM CST, 3 minutes earlier.

Area forecast discussion, Jan 13, 12:57 PM CST, 3 minutes before

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Hazardous weather outlook, Jan 13, 4:29 AM CST, 8 hours 31 minutes before

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Nearby

Winter Weather Advisories in Minnesota, 2021 Winter Weather Advisories in North Dakota, 2021 Every winter weather advisory in 2021

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.