Alert archive / Michigan / Snow Advisories in 2008
Snow Advisory 6, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this snow advisory at Feb 11, 2008, 3:43 PM EST for 8 counties in Michigan. It took effect at Feb 12, 2008, 1:00 AM EST. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Feb 11, 2008, 3:43 PM EST (20:43 UTC)
- In effect from
- Feb 12, 2008, 1:00 AM EST
- Expired
- Feb 12, 2008, 3:00 AM EST
- In force
- 2 hr
- Issued by
- NWS Grand Rapids, MI
Counties Allegan County, MI, Barry County, MI, Calhoun County, MI, Eaton County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 60 km from the middle of the area, began a volume at 20:48 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.7 hours before the alert went out and 353 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1231 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this snow advisory 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 snow advisory went out at Feb 10, 3:55 PM EST, 23 hours 48 minutes earlier.
Area forecast discussion, Feb 10, 3:55 PM EST, 23 hours 48 minutes before
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</html>Hazardous weather outlook, Feb 10, 5:32 PM EST, 22 hours 11 minutes before
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</html>Nearby
Snow Advisories in Michigan, 2008Every snow advisory in 2008
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.