Alert archive / Michigan / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 127, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 9, 2008, 12:11 PM EDT for 4 counties in Michigan. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2008, 12:11 PM EDT (16:11 UTC)
- Expired
- Aug 9, 2008, 1:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
Counties Clare County, MI, Isabella County, MI, Mecosta County, MI, Osceola County, MI
The radar
The Grand Rapids radar (KGRR), 109 km from the middle of the area, began a volume at 16:11 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, 4.2 hours before the alert went out and 252 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
- 34 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1271 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 44 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 |
|---|---|---|---|---|
| Aug 9, 4:52 AM EDT | Small Craft Advisory | GRR | 54 hr | |
| Aug 9, 12:01 PM EDT | Special Weather Statement | GRR | Clare, Osceola | 59 min |
| Aug 9, 12:34 PM EDT | Special Weather Statement | GRR | Clare, Osceola | 56 min |
| Aug 9, 12:59 PM EDT | Special Weather Statement | GRR | Clare, Isabella, Lake, Mecosta, Osceola | 61 min |
| Aug 9, 1:39 PM EDT | Special Weather Statement | GRR | Gratiot, Isabella, Mecosta | 66 min |
| Aug 9, 2:10 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 50 min |
| Aug 9, 4:19 PM EDT | Special Weather Statement | GRR | Ionia | 41 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2008Every severe thunderstorm warning 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.