Alert archive / Michigan / Lake Effect Snow Warnings in 2007

Lake Effect Snow Warning 3, NWS Grand Rapids, MI

January 29, 20075 counties in Michigan

NWS Grand Rapids, MI issued this lake effect snow warning at Jan 29, 2007, 4:15 PM EST for 5 counties in Michigan. It took effect at Jan 29, 2007, 7:00 PM EST. It was in force for 27 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 29, 2007, 4:15 PM EST (21:15 UTC)
In effect from: Jan 29, 2007, 7:00 PM EST
Expired: Jan 30, 2007, 10:07 PM EST
In force: 27 hr
Issued by: NWS Grand Rapids, MI

Counties Allegan County, MI, Kalamazoo County, MI, Muskegon County, MI, Ottawa County, MI, Van Buren County, MI

The radar

The Grand Rapids radar (KGRR), 48 km from the middle of the area, began a volume at 21:16 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, 9.3 hours before the alert went out and 263 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: 1849 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 151 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 Grand Rapids, MI wrote its last area forecast discussion before this lake effect snow warning went out at Jan 29, 3:56 PM EST, 19 minutes earlier.

Area forecast discussion, Jan 29, 3:56 PM EST, 19 minutes before

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Hazardous weather outlook, Jan 29, 12:50 PM EST, 3 hours 25 minutes before

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In the hours before

Local storm report, Jan 29, 2:58 PM EST, 1 hour 17 minutes before

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Local storm report, Jan 29, 3:29 PM EST, 46 minutes before

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Local storm report, Jan 29, 4:09 PM EST, 6 minutes before

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Local storm report, Jan 29, 4:13 PM EST, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 29, 4:43 AM EST	Lake Effect Snow Watch	GRR	Allegan, Kalamazoo, Van Buren	12 hr
Jan 29, 4:43 AM EST	Snow Advisory	GRR	Lake, Mason, Muskegon, Newaygo, Oceana, Ottawa	17 hr
Jan 29, 5:26 PM EST	Heavy Snow Warning	GRR	Muskegon, Ottawa	4 hr

Nearby

Lake Effect Snow Warnings in Michigan, 2007 Every lake effect snow warning in 2007

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.