Alert archive / Michigan / Lake Effect Snow Warnings in 2017

Lake Effect Snow Warning 2, NWS Marquette, MI

January 6, 2017Houghton County, Keweenaw County, Michigan

NWS Marquette, MI issued this lake effect snow warning at Jan 6, 2017, 3:22 PM EST for Houghton County, Keweenaw County, Michigan. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 6, 2017, 3:22 PM EST (20:22 UTC)
Expired: Jan 7, 2017, 3:26 PM EST
In force: 24 hr
Issued by: NWS Marquette, MI

Counties Houghton County, MI, Keweenaw County, MI

The radar

The Marquette radar (KMQT), 95 km from the middle of the area, began a volume at 20:27 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.4 hours before the alert went out and 297 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: 1120 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 38 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 lake effect snow warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Marquette, MI wrote its last area forecast discussion before this lake effect snow warning went out at Jan 6, 12:48 PM EST, 2 hours 34 minutes earlier.

Area forecast discussion, Jan 6, 12:48 PM EST, 2 hours 34 minutes before

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Hazardous weather outlook, Jan 6, 4:16 AM EST, 11 hours 6 minutes before

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In the hours before

Local storm report, Jan 6, 10:27 AM EST, 4 hours 55 minutes before

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Local storm report, Jan 6, 10:34 AM EST, 4 hours 48 minutes before

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Local storm report, Jan 6, 11:58 AM EST, 3 hours 24 minutes before

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Local storm report, Jan 6, 12:58 PM EST, 2 hours 24 minutes before

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Local storm report, Jan 6, 2:45 PM EST, 37 minutes before

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Local storm report, Jan 6, 2:47 PM EST, 35 minutes before

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The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 6, 4:07 AM EST	Small Craft Advisory	MQT		57 hr
Jan 6, 4:07 AM EST	Heavy Freezing Spray Warning	MQT		51 hr
Jan 6, 3:22 PM EST	Wind Chill Advisory	MQT	Baraga, Delta, Dickinson, Gogebic, Houghton, Iron and 4 more	20 hr

Nearby

Lake Effect Snow Warnings in Michigan, 2017 Every lake effect snow warning in 2017

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.