Alert archive / Michigan / Snow Advisories in 2005

Snow Advisory 4, NWS Grand Rapids, MI

December 15, 20056 counties in Michigan

NWS Grand Rapids, MI issued this snow advisory at Dec 15, 2005, 4:10 AM EST for 6 counties in Michigan. It took effect at Dec 15, 2005, 5:00 AM EST. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Dec 15, 2005, 4:10 AM EST (09:10 UTC)
In effect from
Dec 15, 2005, 5:00 AM EST
Expired
Dec 15, 2005, 5:51 PM EST
In force
13 hr
Issued by
NWS Grand Rapids, MI

Counties Calhoun County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Jackson County, MI

The radar

The Grand Rapids radar (KGRR), 78 km from the middle of the area, began a volume at 09:09 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

Detroit, MI (KDTX), launched 00:00Z, 9.2 hours before the alert went out and 99 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-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 2005-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 2005-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 312 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
655 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
312 m²/s²
0-3 km storm-relative helicity
430 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 14, 10:26 PM ESTFreezing Rain AdvisoryGRRAllegan, Barry, Calhoun, Eaton, Ionia, Kalamazoo and 11 more9 hr
Dec 15, 12:05 AM ESTWinter Weather AdvisoryGRRClare, Mecosta, Osceola7 hr

Nearby

Snow Advisories in Michigan, 2005Every snow advisory in 2005

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.