Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 38, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 28, 1986, 10:47 PM EDT for Calhoun County, Eaton County, Michigan. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Sep 28, 1986, 10:47 PM EDT (02:47 UTC)
- Expired
- Sep 28, 1986, 11:45 PM EDT
- In force
- 58 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Calhoun County, MI, Eaton County, MI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Detroit, MI (KFNT), launched 00:00Z, 2.8 hours before the alert went out and 127 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
- 1626 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 984 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.9
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 28, 9:47 PM EDT, 1 hour before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 947 PM EDT SUN SEP 28 1986 ...INTENSE THUNDERSTORMS MOVING INTO SOUTHWEST LOWER MICHIGAN... AT 940 PM WEATHER RADAR INDICATED INTENSE THUNDERSTORMS MOVING INTO SOUTHWEST LOWER MICHIGAN FROM OCEANA COUNTY THROUGH VAN-BUREN COUNTY THEN ACROSS THE LAKE TO NORTHEAST ILLINOIS. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT ABOUT 35 MPH. THESE THUNDERSTORMS MAY PRODUCE VERY HEAVY RAIN...GUSTY WIND TO AROUND 50 MPH AND DANGEROUS LIGTNING. PERSONS IN THE PATH OF THESE STORMS SHOULD BE ON THE ALERT AND WATCH FOR HEAVY RAIN...GUSTY WINDS AND DANGEROUS LIGHNTING AS THESE THUNDERSTOMS PASS THROUGH THE AREA. STAY TUNED TO NOAA WEAxTHER RADIO...LOCAL RADIO OR TELEVISION FOR FURTHER INFORMATION AND POSSIBLE WARNINGS. BKR
Special weather statement, Sep 28, 10:34 PM EDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1035 PM EDT SUN SEP 28 1986 ...INTENSE THUNDERSTORM OVER NORTHWEST GRAND RAPIDS AND ROCKFORD... AT 1020 PM INTENSE THUNDERSTORMS WERE REPORTED OVER NORTHWEST GRAND RAPIDS AT LAKE MICHIGAN DRIVE AND COVELL STREETS AND OVER THE CITY OF ROCKFORD. WIND GUSTS TO 45 TO 50 MPH WERE REPORTED ALONG WITH 1/4 TO 3/8 INCH HAIL. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT ABOUT 20 TO 25 MPH. PERSONS IN THESE AREAS SHOULD BE ON THE ALERT AS THESE STORMS MOVE THROUGH THE AREA. THE SOIL IS SATURATED FROM THE RECENT RAINS AND THE WINDS WITH THESE THUNDERSTORMS COULD BLOW OVER SOME TREES IN THE LOOSE SOIL. LIGHTNING IS DEADLY...OBSERVE THE LIGTNING RULES. AT 1030 PM EDT AN INTENSE THUNDERSTORMS WAS MOVING INTO KALAMAZOO COUNTY PEA SIZED HAIL AND WIND GUSTS TO 50 MPH WERE REPORTED IN GOBLES IN VAN-BUREN COUNTY ALONG WITH TORRENTIAL RAIN. THE HEAVY RAIN MAY CAUSE FLOODING OF LOW LYING AREAS AND INTERSECTIONS. STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO OR TEVELESION FOR FURTHER INFORMATION AND POSSIBLE WARNINGS. BKR
Special weather statement, Sep 28, 10:37 PM EDT, 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LANSING, MI
1035 PM EDT MON SEP 28 1986
...SEVERE THUNDERSTORM WATCH UNTIL 2AM EDT...
AT 1030 PM EDT A LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM
35 MILES NORTHWEST OF LANSING TO THE SOUTHWEST CORNER OF LOWER MICHIGAN.
THE STRONGEST THUNDERSTORM WAS 30 MILES NORTHWEST OF BATTLE CREEK.
40 TO 45 MPH WINDS...TORRENTIAL RAIN AND FREQUENT LIGHTNING WAS
REPORTED WITH THIS LINE OF THUNDERSTORMS.
MOVEMENT WAS EAST AT 35 MPH WHICH WILL PUT THE LINE FROM LANSING TO
BATTLE CREEK BETWEEN 1130 PM AND MIDNIGHT.
THE TORRENTIAL RAIN FROM THESE THUNDERSTORMS WILL CAUSE SOME URBAN
AND LOW AREA FLOODING ACROSS SOUTH CENTRAL LOWER MICHIGAN.
FORTUNEThe 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 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, 5:29 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo, Van Buren | 46 min |
| 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; the sounding from the Mesonet's radiosonde archive.