Alert archive / Michigan / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 91, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jun 26, 1989, 4:07 PM EST for Cass County, Michigan. It was in force for 53 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 26, 1989, 4:07 PM EST (21:07 UTC)
- Expired
- Jun 26, 1989, 5:00 PM EST
- In force
- 53 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
County Cass 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 |
|---|---|---|---|
| Jun 26, 4:35 PM EST | Hail 1.75 | Cass, 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, 9.1 hours before the alert went out and 229 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
- 102 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1533 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Jun 26, 1:20 PM EST, 2 hours 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS INDIANA 118 PM EST MON JUN 26 1989 IN INDIANA SEVERE THUNDERSTORM WATCH NUMBER 538 IS IN EFFECT UNTIL 900 PM EST AND INCLUDES EXTREME NORTHWEST INDIANA. THE WATCH AREA IS FOR THAT PART OF INDIANA NORTH OF A LINE FROM 50 MILES SOUTH OF CHICAGO TO WARSAW...AND WEST OF A LINE FROM WARSAW TO LAGRANGE. SOME CITIES INCLUDED ARE...CROWN POINT...GARY...MICHIGAN CITY... SOUTH BEND AND ELKHART. REMEMBER...A WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. AT 115 PM EST SCATTERED THUNDERSTORMS WERE DEVELOPING OVER EXTREME NORTHWEST INDIANA. HOWEVER NONE OF THEM APPEARED SEVERE AT THIS TIME. HENDRICKSON
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 4:46 PM EST | Tornado Warning | IND | Berrien | 29 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1989Every severe thunderstorm warning in 1989
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.