Alert archive / Minnesota / Winter Storm Watches in 2021

Winter Storm Watch 4, NWS Duluth, MN

November 10, 2021Itasca County, Koochiching County, Saint Louis County, Minnesota

NWS Duluth, MN issued this winter storm watch at Nov 10, 2021, 2:52 PM CST for Itasca County, Koochiching County, Saint Louis County, Minnesota. It took effect at Nov 11, 2021, 12:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Nov 10, 2021, 2:52 PM CST (20:52 UTC)
In effect from: Nov 11, 2021, 12:00 PM CST
Expired: Nov 11, 2021, 3:45 AM CST
In force
Issued by: NWS Duluth, MN

Counties Itasca County, MN, Koochiching County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 133 km from the middle of the area, began a volume at 20:53 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

International Fa, MN (KINL), launched 12:00Z, 8.9 hours before the alert went out and 88 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: 2011 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 117 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 storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this winter storm watch went out at Nov 10, 11:59 AM CST, 2 hours 53 minutes earlier.

Area forecast discussion, Nov 10, 11:59 AM CST, 2 hours 53 minutes before

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Hazardous weather outlook, Nov 10, 4:46 AM CST, 10 hours 6 minutes before

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The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Lasted
Nov 10, 3:29 AM CST	Gale Warning	DLH	39 hr
Nov 10, 3:29 AM CST	Small Craft Advisory	DLH	47 hr
Nov 10, 3:29 AM CST	Small Craft Advisory	DLH	47 hr

Nearby

Winter Storm Watches in Minnesota, 2021 Every winter storm watch 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.