Alert archive / Michigan / Tornado Warnings in 1986

Tornado Warning 1, NWS Detroit, MI

April 28, 1986Shiawassee County, Michigan

NWS Detroit, MI issued this tornado warning at Apr 28, 1986, 4:19 PM EDT for Shiawassee County, Michigan. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Apr 28, 1986, 4:19 PM EDT (20:19 UTC)
Expired
Apr 28, 1986, 5:00 PM EDT
In force
41 min
Issued by
NWS Detroit, MI
Area
Whole counties

County Shiawassee 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, 8.3 hours before the alert went out and 64 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 1986-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1986-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2120 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
93 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 KFNT 282019
TORFNT
MIC155-282100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE FLINT MI
419 PM EDT MON APR 28 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 500 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

CENTRAL LOWER MICHIGAN...SHIAWASSEE

LOCAL LAW ENFORCEMENT PERSONNEL REPORTED FUNNEL CLOUD... SOMETIMES
TOUCHING GROUND WITH DAMAGE... IN SOUTHWEST SHIAWASSEE COUNTY
MOVING NORTHEAST.  LAST SHIGHTING WAS ABOUT 20 MILES SOUTHWEST
OF OWOSSO.

IF YOU ARE IN THE PATH OF THIS TORNADO..GO TO A BASEMENT SHELTER IF
AVAILABLE. OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR.  DO NOT STAY IN A CAR OR MOBILE HOME..FIND A REINFORCED
SHELTER OR LIE FLAT IN A DITCH OR RAVINE.

JOHNSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 3:50 PM EDTSevere Thunderstorm WarningDTXSaginaw, Shiawassee55 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.