Alert archive / Michigan / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 19, NWS Gaylord, MI

September 10, 1986Muskegon County, Newaygo County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Sep 10, 1986, 8:16 PM EDT for Muskegon County, Newaygo County, Michigan. It was in force for 59 min. 1 report 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
Sep 10, 1986, 8:16 PM EDT (00:16 UTC)
Expired
Sep 10, 1986, 9:15 PM EDT
In force
59 min
Issued by
NWS Gaylord, MI
Area
Whole counties

Counties Muskegon County, MI, Newaygo 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
Sep 10, 8:30 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 207 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, Green Bay/Straub, WI at 00:00Z on 1986-09-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Green Bay/Straub, WI at 00:00Z on 1986-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
7 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
65 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 110016
SVRMKG
MIC121-123-110115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MUSKEGON MI
816 PM EDT WED SEP 10 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND 
SPECIAL MARINE WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE 
FOLLOWING COUNTIES OF

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

AT 808PM EDT RADAR INDICATED A LINE OF THUNDERSTORMS FROM 20 MILES
WEST OF WHITEHALL MICHIGAN...ABOUT 30 MILES NORTHWEST OF MUSKEGON
TO JUST SOUTH OF SHELBY MICHIGAN...ABOUT 35 MILES NORTH OF
MUSKEGON MICHIGAN.  RADAR INDICATED ANOTHER SEVERE THUNDERSTORM
IN CENTRAL NEWAYGO COUNT...ABOUTH 40 MILEC NORTHEAST OF MUSKEGON
MICHIGAN.

THESE STORMS WERE MOVING EAST AT 40 MILES AN HOUR.

IF YOU ARE IN THE PATH OF THIS STORM..GET TO A REINFORCED BUILDING.
SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WIND..LARGE HAIL..VERY
HEAVY RAIN..AND FREQUENT LIGHTNING. THEY OCCASIONALLY DO SPAWN A
TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT.

BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY!

 A FLOOD WWATCH REMAINS IN EFFECT FOR MOST OF LOWER MICHIGAN.

GALLOWAY

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 9:10 PM EDTFlash Flood WarningAPXMuskegon, Newaygo110 min
Sep 10, 11:02 PM EDTFlash Flood WarningAPXMuskegon, Newaygo, Oceana118 min
Sep 11, 3:35 AM EDTFlash Flood WarningAPXLake, Mecosta, Osceola4 hr
Sep 11, 3:35 AM EDTFlash Flood WarningAPXMason4 hr
Sep 11, 6:15 AM EDTFlash Flood WarningAPXMuskegon105 min
Sep 11, 7:37 AM EDTFlash Flood WarningAPXMuskegon, Newaygo, Oceana4 hr
Sep 11, 7:37 AM EDTFlash Flood WarningAPXLake, Mecosta, Osceola4 hr
Sep 11, 7:37 AM EDTFlash Flood WarningAPXMason4 hr
Sep 11, 11:40 AM EDTFlash Flood WarningAPXOceana3 hr
Sep 11, 7:49 PM EDTFlash Flood WarningAPXOceana2 hr

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.