Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 40, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 29, 1986, 5:29 PM EDT for Kalamazoo County, Van Buren County, Michigan. It was in force for 46 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 29, 1986, 5:29 PM EDT (21:29 UTC)
- Expired
- Sep 29, 1986, 6:15 PM EDT
- In force
- 46 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Kalamazoo County, MI, Van Buren County, MI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 29, 6:00 PM EDT | Thunderstorm Wind 0 | Kalamazoo, MI |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Detroit, MI (KFNT), launched 12:00Z, 9.5 hours before the alert went out and 210 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
- 1291 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 346 m²/s²
- 0-3 km storm-relative helicity
- 331 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Sep 29, 12:50 PM EDT, 4 hours 39 minutes before
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</html>Special weather statement, Sep 29, 2:05 PM EDT, 3 hours 24 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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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 |
|---|---|---|---|---|
| Sep 28, 10:03 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 57 min |
| Sep 28, 10:47 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 58 min |
| Sep 29, 12:00 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 60 min |
| Sep 29, 1:07 AM EDT | Flash Flood Warning | GRR | Branch | 3 hr |
| Sep 29, 6:06 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 54 min |
| Sep 29, 6:42 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ingham | 48 min |
| Sep 29, 7:01 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 29 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1986Every severe thunderstorm warning in 1986
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.