Alert archive / Michigan / Tornado Warnings in 1986

Tornado Warning 13, NWS Grand Rapids, MI

August 26, 1986Ingham County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Aug 26, 1986, 6:42 PM EDT for Ingham County, Michigan. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Aug 26, 1986, 6:42 PM EDT (22:42 UTC)
Expired
Aug 26, 1986, 7:15 PM EDT
In force
33 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Ingham 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, 10.7 hours before the alert went out and 78 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.

Skew-T log-pSkew-T log-p diagram, Detroit, MI at 12:00Z on 1986-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 1986-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
77 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KLAN 262242
TORLAN
MIC065-262315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE LANSING MI
642 PM EDT TUE AUG 26 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 715 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

SOUTH CENTRAL LOWER MICHIGAN...INGHAM


AT 638 PM EDT A TORNADO WAS REPORTED AT GROVENBURG AND HOLT ROAD
IN DELHI TOWNSHIP MOVING TO THE NORTHEAST AT 35 MPH.  DAMAGE TO A
BARN AND OTHER BUILDINGS WAS REPORTED AT KRANTZ ROAD AT 635 PM.
PEOPLE IN HOLT AND MERIDIAN TOWNSHIP ARE NEAR THE PATH OF THIS STORM
.

IF YOU ARE IN THE PATH OF THIS STORM...GO TO A BASEMENT SHELTER IF
AVAILABLE OR GO TO A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR. DO
NOT STAY IN A CAR OR MOBILE HOME...FIND A REINFORCED SHELTER. A DITCH
...RAVINE OR OTHER LOW AREA WILL ALSO OFFER SHELTER.  STAY AS LOW AS
POSSIBLE AND COVER YOUR HEAD TO AVOID INJURY FROM FLYING DEBRIS.

 B4UNTING

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 26, 5:44 PM EDTSevere Thunderstorm WarningGRRKalamazoo16 min
Aug 26, 6:24 PM EDTSevere Thunderstorm WarningGRRIngham36 min
Aug 26, 6:52 PM EDTSevere Thunderstorm WarningGRRHillsdale31 min

Nearby

Tornado Warnings in Michigan, 1986Every tornado warning in 1986Tornadoes 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.