Alert archive / Michigan / Wind Chill Advisories in 2009
Wind Chill Advisory 1, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this wind chill advisory at Jan 14, 2009, 4:23 AM EST for 23 counties in Michigan. It took effect at Jan 14, 2009, 10:00 PM EST. It was in force for 60 hr.
The area
The counties it named.
The facts
- Issued
- Jan 14, 2009, 4:23 AM EST (09:23 UTC)
- In effect from
- Jan 14, 2009, 10:00 PM EST
- Expired
- Jan 17, 2009, 10:17 AM EST
- In force
- 60 hr
- Issued by
- NWS Grand Rapids, MI
All 23 counties
Allegan County, MI, Barry County, MI, Calhoun County, MI, Clare County, MI, Clinton County, MI, Eaton County, MI, Gratiot County, MI, Ingham County, MI, Ionia County, MI, Isabella County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Montcalm County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Ottawa County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 27 km from the middle of the area, began a volume at 09:20 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, 9.4 hours before the alert went out and 165 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
- 1083 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this wind chill 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 wind chill advisory went out at Jan 14, 12:10 AM EST, 4 hours 13 minutes earlier.
Area forecast discussion, Jan 14, 12:10 AM EST, 4 hours 13 minutes before
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</html>The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 13, 10:55 PM EST | Lake Effect Snow Watch | GRR | Allegan, Kalamazoo, Ottawa, Van Buren | 17 hr |
| Jan 14, 4:36 AM EST | Small Craft Advisory | GRR | 3 days | |
| Jan 14, 3:39 PM EST | Lake Effect Snow Warning | GRR | Allegan, Van Buren | 36 hr |
| Jan 14, 3:39 PM EST | Lake Effect Snow Advisory | GRR | Kalamazoo, Mason, Muskegon, Oceana, Ottawa | 36 hr |
Nearby
Wind Chill Advisories in Michigan, 2009Every wind chill advisory in 2009
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.