Alert archive / Michigan / Tornado Warnings in 1998
Tornado Warning 3, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Jun 12, 1998, 5:08 PM EDT for Jackson County, Michigan. It was in force for 47 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
- Jun 12, 1998, 5:08 PM EDT (21:08 UTC)
- Expired
- Jun 12, 1998, 5:55 PM EDT
- In force
- 47 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
County Jackson County, MI
The radar
The Detroit radar (KDTX), 93 km from the middle of the area, began a volume at 21:10 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 12, 5:25 PM EDT | Hail 0.88 | Vandercook Lake, 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.
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 12, 3:00 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 9.1 hours before the alert went out and 97 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
- 5 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGRR 122119 TORGRR MIC075-122155- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GRAND RAPIDS MI 508 PM EDT FRI JUN 12 1998 THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A * TORNADO WARNING FOR... JACKSON COUNTY IN SOUTH CENTRAL LOWER MICHIGAN * UNTIL 555 PM EDT * AT 508 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A DEVELOPING TORNADO 14 MILES SOUTHEAST OF CHARLOTTE OR 10 MILES WEST OF RIVES JUNCTION MOVING EAST AT 40 MPH. * THE STORM PRODUCING THE TORNADO WILL BE NEAR... RIVES JUNCTION AROUND 520 PM EDT MUNITH AROUND 535 PM EDT GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! MJK
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 2:51 PM EDT | Severe Thunderstorm Warning | GRR | Ottawa | 49 min |
| Jun 12, 3:11 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 49 min |
| Jun 12, 3:58 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 32 min |
| Jun 12, 4:15 PM EDT | Severe Thunderstorm Warning | GRR | Barry | 50 min |
| Jun 12, 4:20 PM EDT | Tornado Warning | GRR | Barry | 35 min |
| Jun 12, 4:32 PM EDT | Tornado Warning | GRR | Calhoun | 48 min |
| Jun 12, 4:47 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 48 min |
| Jun 12, 5:05 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 50 min |
Nearby
Tornado Warnings in Michigan, 1998Every tornado warning in 1998Tornadoes 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.