Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 35, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 26, 1986, 5:53 PM EDT for Calhoun County, Hillsdale County, Michigan. It was in force for 52 min.
The area
The counties it named.
The facts
- Issued
- Sep 26, 1986, 5:53 PM EDT (21:53 UTC)
- Expired
- Sep 26, 1986, 6:45 PM EDT
- In force
- 52 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Calhoun County, MI, Hillsdale 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 12:00Z, 9.9 hours before the alert went out and 134 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
- 2111 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 620 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.4
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 26, 2:15 PM EDT, 3 hours 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 210 PM EDT FRI SEP 26 1986 ...INTENSE THUNDERSTORMS MOVING TOWARD SOUTHWEST MICHIGAN... AT 2 PM WEATHER RADAR INDICATED AN AREA OF INTENSE THUNDERSTORMS MOVING OUT OF THE CHIGAGO..MILWAUKEE AREAS ONTO LAKE MICHIGAN. IN THE CHICAGO AREA THE THUNDERSTORMS PRODUCED VERY HEAVY RAIN.. REDUCING THE VISIBILITY TO NEAR ZERO..SMALL HAIL AND WIND GUSTS TO ABOUT 45 MPH. THE THUNDERSTORMS WERE MOVING NORTHEAST ABOUT 30 MPH AND SHOULD REACH THE BENTON HARBOR..SOUTH HAVEN..GRAND HAVEN AREAS BY 3 TO 4 PM. BOATERS ON LAKE MICHIGAN SHOULD CONSIDER HEADING FOR A SAFE PORT. PERSONS ON SHORE SHOULD BRACE FOR ANOTHER ONSLAUGHT OF HEAVY RAINv AND STRONG GUSTY WINDS. SOME LOCAL FLOODING IS LIKELY AS THE THUNDERSTORMS MOVE ACROSS SOUTHWEST MICHIGAN. THE THUNDERSTORMS WILL GENERATE FREQUENT LIGHTNING. LIGHTNING IS DEADLY..OBSERVE THE LIGHTNING SAFETY RULES. COOLEY
Special weather statement, Sep 26, 3:44 PM EDT, 2 hours 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 330 PM EDT FRI SEP 26 1986 ...INTENSE THUNDERSTORMS MOVING ONSHORE IN SOUTHWEST MICHIGAN... AT 330 PM WEATHER RADAR INDICATED AN AREA OF THUNDERSTORMS MOVING ONSHORE FROM SOUTH BEND TO HOLLAND AND INLAND TO SPARTA. THE THUNDERSTORMS RANGE FROM HEAVY TO VERY HEAVY INTENSITY. SCATTERED RAINFALL AMOUNTS WITH THESE THUNDERSTORMS COULD RANGE UP TO AN INCH OR TWO. HEAVY RAIN COULD REDUCE VISIBILITY TO NEAR ZERO IN SOME AREAS. HEAVY RAIN COULD ALSO PRODUCE TEMPORARY FLOODING OF LOW SPOTS INCLUDING LOW ROADS AND INTERSECTIONS. ALLOW EXTRA TIME TO REACH YOUR DESTINATION AND DRIVE SAFELY. LIGHTNING WILL ACCOMPANY THESE THUNDERSTORMS. LIGHTNING IS DEADLY.. OBSERVE THE LIGHTNING SAFETY RULES. COOLEY
Special weather statement, Sep 26, 4:49 PM EDT, 1 hour 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LANSING, MI
448 PM EDT FRI SEP 26 1986
...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT...
...FLASH FLOOD WATCH REMAINS IN EFFECT...
AT 445 PM EDT RADAR SHOWED A LINE OF THUNDERSTORMS IN SOUTHWEST
LOWER MICHIGAN. THE LEADING EDGE EXTENDED FROM NEAT GRAND RAPIDS
SOUTH INTO NORTHERN INDIANA. THE STRONGEST THUNDERSTORM WAS LOCATED
30 MILES SOUTH SOUTHWEST OF BATTLE CREEK.
VERY HEAVY #RAIN...SMALL HAIL...AND WIND GUSTS TO 45 MPH WILL ACCOMPANY
THESE STORMS AS THEY MOVE INTO WESTERN CALHOUN AND WESTERN BRANCH
COUNTIES BETWEEN 500 AND 600 PM EDT.
FORTUNE/COKELYSpecial weather statement, Sep 26, 4:54 PM EDT, 59 minutes before
SPECIAL WEATHER STATEMENT CORRECTED
NATIONAL WEATHER SERVICE LANSING, MI
454 PM EDT FRI SEP 26 1986
...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT...
...FLASH FLOOD WATCH REMAINS IN EFFECT...
AT 445 PM EDT RADAR SHOWED A LINE OF THUNDERSTORMS IN SOUTHWEST
LOWER MICHIGAN. THE LEADING EDGE EXTENDED FROM NEAR GRAND RAPIDS
SOUTH INTO NORTHERN INDIANA. THE STRONGEST THUNDERSTORM WAS LOCATED
30 MILES SOUTH SOUTHWEST OF BATTLE CREEK.+
VERY HEAVY RAIN...SMALL HAIL...AND WIND GUSTS TO 45 MPH WILL ACCOMPANY
THESE STORMS AS THEY MOVE INTO WESTERN CALHOUN AND WESTERN BRANCH
COUNTIES BETWEEN 500 AND 600 PM EDT.
FORTUNE/COKELYSpecial weather statement, Sep 26, 5:41 PM EDT, 12 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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The site you requested is temporarily down for maintenance or an unexpected outage.
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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 26, 4:30 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Van Buren | 30 min |
| Sep 26, 5:20 PM EDT | Tornado Warning | GRR | Kalamazoo | 31 min |
| Sep 26, 6:26 PM EDT | Severe Thunderstorm Warning | GRR | Jackson | 19 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.