Alert archive / Michigan / Winter Storm Watches in 2011
Winter Storm Watch 4, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this winter storm watch at Mar 21, 2011, 4:06 AM EDT for 10 counties in Michigan. It took effect at Mar 22, 2011, 4:00 PM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 21, 2011, 4:06 AM EDT (08:06 UTC)
- In effect from
- Mar 22, 2011, 4:00 PM EDT
- Expired
- Mar 21, 2011, 4:49 PM EDT
- In force
- Issued by
- NWS Grand Rapids, MI
Counties Clare County, MI, Gratiot County, MI, Isabella County, MI, Lake County, MI, Mason County, MI, Mecosta County, MI, Montcalm County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 91 km from the middle of the area, began a volume at 08:06 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, 8.1 hours before the alert went out and 197 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
- 649 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 328 m²/s²
- 0-3 km storm-relative helicity
- 547 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch 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 winter storm watch went out at Mar 21, 12:10 AM EDT, 3 hours 56 minutes earlier.
Area forecast discussion, Mar 21, 12:10 AM EDT, 3 hours 56 minutes before
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Local storm report, Mar 21, 12:17 AM EDT, 3 hours 49 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 |
|---|---|---|---|---|
| Mar 20, 8:27 PM EDT | Special Weather Statement | GRR | Kent, Ottawa | 48 min |
| Mar 20, 8:39 PM EDT | Areal Flood Advisory | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Ingham and 7 more | 14 hr |
| Mar 20, 8:45 PM EDT | Special Weather Statement | GRR | Allegan, Van Buren | 45 min |
| Mar 20, 9:01 PM EDT | Special Weather Statement | GRR | Ionia | 44 min |
| Mar 20, 9:30 PM EDT | Special Weather Statement | GRR | Van Buren | 45 min |
| Mar 20, 9:51 PM EDT | Special Weather Statement | GRR | Kalamazoo | 39 min |
| Mar 21, 8:43 AM EDT | River Flood Advisory | GRR | Clinton | 5 days |
| Mar 21, 10:45 AM EDT | River Flood Advisory | GRR | Clinton | 22 days |
| Mar 21, 4:49 PM EDT | Winter Storm Watch | GRR | Clinton, Eaton, Ingham, Ionia, Kent, Muskegon | 12 hr |
| Mar 21, 4:49 PM EDT | Winter Storm Warning | GRR | Clare, Clinton, Eaton, Gratiot, Ingham, Ionia and 10 more | 51 hr |
Nearby
Winter Storm Watches in Michigan, 2011Every winter storm watch 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.