Alert archive / Michigan / Winter Storm Warnings in 2018

Winter Storm Warning 7, NWS Marquette, MI

March 30, 201813 counties in Michigan

NWS Marquette, MI issued this winter storm warning at Mar 30, 2018, 4:37 AM EDT for 13 counties in Michigan. It took effect at Mar 31, 2018, 2:00 AM EDT. It was in force for 18 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: Mar 30, 2018, 4:37 AM EDT (08:37 UTC)
In effect from: Mar 31, 2018, 2:00 AM EDT
Expired: Mar 31, 2018, 8:00 PM EDT
In force: 18 hr
Issued by: NWS Marquette, MI

Counties Alger County, MI, Baraga County, MI, Delta County, MI, Dickinson County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Keweenaw County, MI, Luce County, MI, Marquette County, MI, Menominee County, MI, Ontonagon County, MI, Schoolcraft County, MI

The radar

The Marquette radar (KMQT), 21 km from the middle of the area, began a volume at 08:36 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 00:00Z, 8.6 hours before the alert went out and 216 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: 1614 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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 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 winter storm warning went out at Mar 29, 7:49 PM EDT, 8 hours 48 minutes earlier.

Area forecast discussion, Mar 29, 7:49 PM EDT, 8 hours 48 minutes before

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Hazardous weather outlook, Mar 29, 3:54 PM EDT, 12 hours 43 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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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 Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 30, 7:34 AM EDT	Gale Warning	MQT		38 hr
Mar 30, 10:00 AM EDT	Small Craft Advisory	MQT		3 days
Mar 30, 1:06 PM EDT	Winter Weather Advisory	MQT	Menominee	15 hr
Mar 30, 4:11 PM EDT	Heavy Freezing Spray Warning	MQT		46 hr

Nearby

Winter Storm Warnings in Michigan, 2018 Every winter storm warning 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.