Alert archive / Michigan / Lake Effect Snow Advisories in 2011

Lake Effect Snow Advisory 8, NWS Gaylord, MI

February 9, 2011Antrim County, Otsego County, Michigan

NWS Gaylord, MI issued this lake effect snow advisory at Feb 9, 2011, 11:19 AM EST for Antrim County, Otsego County, Michigan. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: Feb 9, 2011, 11:19 AM EST (16:19 UTC)
Expired: Feb 10, 2011, 4:40 AM EST
In force: 17 hr
Issued by: NWS Gaylord, MI

Counties Antrim County, MI, Otsego County, MI

The radar

The NCL Michigan radar (KAPX), 18 km from the middle of the area, began a volume at 16:24 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, 4.3 hours before the alert went out and 261 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: 1204 m above ground
0-6 km bulk shear: 0 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 lake effect snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gaylord, MI wrote its last area forecast discussion before this lake effect snow advisory went out at Feb 9, 6:55 AM EST, 4 hours 24 minutes earlier.

Area forecast discussion, Feb 9, 6:55 AM EST, 4 hours 24 minutes before

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Hazardous weather outlook, Feb 9, 5:06 AM EST, 6 hours 13 minutes before

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In the hours before

Local storm report, Feb 9, 6:33 AM EST, 4 hours 46 minutes before

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Local storm report, Feb 9, 7:51 AM EST, 3 hours 28 minutes before

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Local storm report, Feb 9, 10:49 AM EST, 30 minutes before

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Nearby

Lake Effect Snow Advisories in Michigan, 2011 Every lake effect snow advisory in 2011

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.