Alert archive / Michigan / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 9, NWS Gaylord, MI

July 15, 1986Muskegon County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Jul 15, 1986, 7:45 PM EDT for Muskegon County, Michigan. It was in force for 60 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 15, 1986, 7:45 PM EDT (23:45 UTC)
Expired
Jul 15, 1986, 8:45 PM EDT
In force
60 min
Issued by
NWS Gaylord, MI
Area
Whole counties

County Muskegon County, MI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jul 15, 7:55 PM EDTThunderstorm Wind 0Muskegon, MI
Jul 15, 8:20 PM EDTThunderstorm Wind 0Muskegon, MI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 11.8 hours before the alert went out and 233 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 1986-07-15Temperature 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 1986-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
951 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
69 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 KMKG 152345
SVRMKG
MIC121-160045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MUSKEGON MI
745 PM EDT TUE JUL 15 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND 
SPECIAL MARINE WARNING EFFECTIVE UNTIL 845 PM EDT FOR PEOPLE IN THE 
FOLLOWING COUNTY OF

WEST CENTRAL LOWER MICHIGAN...MUSKEGON
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTY JUST MENTIONED

AT 742PM EDT A LINE OF SEVERE THUNDERSTORMS WAS INDICATED BY
RADAR FROM PENTWATER MICHIGAN SOUTHWEST TO 25 MILES WEST OF
MUSKEGON MICHIGAN MOVING TOWARD THE EAST SOUTHEAST AT 40
MILES AN HOUR.  A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR OCEANA COUNTY UNTIL 825PM EDT.

 THIS IS A DANGEROUS STORM.  TAKE COVER IMMEDIATELY !

 BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY !

 IF YOU ARE IN OR NEAR THE CITIES OF WHITEHALL  AND MUSKEGON
 GET TO A REINFORCED SHELTER AND PREPAvRE FOR STRONG DAMAGING WIND..
 LARGE HAIL..VERY HEAVY RAIN AND LIGHTNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 7:37 PM EDTSevere Thunderstorm WarningAPXOceana48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.