Alert archive / Michigan / Lake Effect Snow Advisories in 2011
Lake Effect Snow Advisory 3, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this lake effect snow advisory at Feb 7, 2011, 3:32 PM EST for Allegan County, Van Buren County, Michigan. It took effect at Feb 7, 2011, 11:00 PM EST. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Feb 7, 2011, 3:32 PM EST (20:32 UTC)
- In effect from
- Feb 7, 2011, 11:00 PM EST
- Expired
- Feb 8, 2011, 3:37 AM EST
- In force
- 5 hr
- Issued by
- NWS Grand Rapids, MI
Counties Allegan County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 72 km from the middle of the area, began a volume at 20:31 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, 8.5 hours before the alert went out and 282 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
- 853 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- -58 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 7, 3:24 PM EST | Small Craft Advisory | GRR | 6 days |
Nearby
Lake Effect Snow Advisories in Michigan, 2011Every 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.