Alert archive / Michigan / Tornado Warnings in 1986

Tornado Warning 21, NWS Detroit, MI

August 2, 1986Wayne County, Michigan

NWS Detroit, MI issued this tornado warning at Aug 2, 1986, 3:57 PM EDT for Wayne County, Michigan. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1986, 3:57 PM EDT (19:57 UTC)
Expired
Aug 2, 1986, 4:20 PM EDT
In force
23 min
Issued by
NWS Detroit, MI
Area
Whole counties

County Wayne 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, 8.0 hours before the alert went out and 50 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 1986-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 307 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 1986-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.19395878Sfc1 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
307 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
96 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 KDTW 021957
TORDTW
MIC163-022020-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE DETROIT MI
357 PM EDT SAT AUG 2 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 420 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

SOUTHEAST LOWER MICHIGAN...WAYNE

AT 345 PM EDT INDICATED A TORNADO OVER WAYNE COUNTY MOVING TO THE
EAST AT 30 MILES AN HOUR.                                         .

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 2:13 PM EDTTornado WarningDTXGenesee32 min
Aug 2, 2:26 PM EDTSevere Thunderstorm WarningDTXLenawee, Washtenaw44 min
Aug 2, 2:26 PM EDTSevere Thunderstorm WarningDTXLivingston44 min
Aug 2, 2:35 PM EDTSevere Thunderstorm WarningDTXLapeer55 min
Aug 2, 3:25 PM EDTTornado WarningDTXMacomb25 min
Aug 2, 3:47 PM EDTTornado WarningDTXSaint Clair28 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.