Alert archive / Michigan / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 60, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 18, 1998, 10:39 PM EDT for Allegan County, Van Buren County, Michigan. It was in force for 76 min. 6 reports 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
- Jun 18, 1998, 10:39 PM EDT (02:39 UTC)
- Expired
- Jun 18, 1998, 11:55 PM EDT
- In force
- 76 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
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 02:38 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 11:15 PM EDT | Thunderstorm Wind 70 | Saugatuck, MI | A trained weather spotter reported a 81 mph wind gust measured by his local anemometer. The spotter also reported a tree was downed across Michigan Highway 89 in the southern part of Saugatuck Township. |
| Jun 18, 11:22 PM EDT | Thunderstorm Wind | Holland, MI | Allegan County Central Dispatch reported a few trees and power lines downed near the intersection of 62nd and 113th Streets in South Holland. |
| Jun 18, 11:22 PM EDT | Thunderstorm Wind | Glenn, MI | Allegan County Central Dispatch reported a few trees and power lines downed near the intersection of 59th and 142nd Streets 3 miles east of Glenn. |
| Jun 18, 11:22 PM EDT | Thunderstorm Wind | Bangor, MI | Van Buren County Central Dispatch reported a few trees and power lines downed in Bangor Township. |
| Jun 18, 11:25 PM EDT | Thunderstorm Wind | Lawrence, MI | Van Buren County Central Dispatch reported a tree fell through a house trailer in Lawrence Township. No injuries were reported. |
| Jun 18, 11:35 PM EDT | Thunderstorm Wind | Paw Paw, MI | Scattered reports of trees and power lines down in Paw Paw Township. |
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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 18, 8:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 2.7 hours before the alert went out and 222 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
- 440 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 1528 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 10:46 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Ottawa | 64 min |
| Jun 18, 11:29 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Kalamazoo, Kent | 61 min |
| Jun 19, 12:03 AM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 62 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.