Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 16, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Aug 8, 1986, 4:36 PM EDT for Iosco County, Michigan. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Aug 8, 1986, 4:36 PM EDT (20:36 UTC)
- Expired
- Aug 8, 1986, 5:35 PM EDT
- In force
- 59 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County Iosco 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, 8.6 hours before the alert went out and 176 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.
- Mixed-layer CAPE
- 1078 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAPN 082039 COR SVRAPN MIC069-082145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE ALPENA MI 436 PM EDT FRI AUG 8 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 545 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHEAST LOWER MICHIGAN...IOSCO COUNTY AND THE ADJACANT WATERS OF LAKE HURON FROM OSCODA TO ALABASTER. AT 330 PM EDT..RADAR SHOWED A SEVERE THUNDERSTORM 5 MILES WEST OF WHITTEMORE IN IOSCO COUNTY MOVING EAST AT 35 MILES AN HOUR. THIS STORM WILL REACH THE LAKE HURON COAST BY 4 PM EDT. BOATERS FROM OSCODA TO SHOULD TAKE SHELTER IMMEDIATELY. IF YOU ARE IN THE PATH OF THIS STORM..MOVE TO A PLACE OF SAFETY. SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WIND..LARGE HAIL.. VERY HEAVY RAIN..AND FREQUENT LIGHTNING. THEY SOMETIMES SPAWN A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT. STAY TUNED TO YKOUR LOCAL RADIO OR TELEVISION STATION..OR TO NOAA WEATHER RADIO FOR THE LATEST INFORMATION. SHIVELY
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Aug 8, 3:26 PM EDT, 1 hour 10 minutes before
STORM REPORT NATIONAL WEATHER SERVICE ALPENA MI 320 PM EDT FRI AUG 8 1986 AT 130 PM EDT THE PRESQUE ISLE COUNTY SHERIFF RECEIVED A REPORT OF A TORNADO TOUCH DOWN IN DOWNTOWN ROGERS CITY MICHIGAN...AT ST. CLAIR AND FIRST STREETS. A STORAGE SHED WAS DESTROYED...A VERY LARGE TREE UPROOTED AND A WINDOW BLOWN OUT OF THE HOUSE DOOR. WE CONTACTED AN EYE WITNESS...FRANK DERRY...659 SOUTH FIRST STREET... WHO SAW THE TORNADO FUNNEL APPROACH FROM THE NORTHWEST...TOUCH DOWN AND MOVE TO THE EAST OVER LAKE HURON. HE ALSO REPORTED VERY HEAVY RAIN AND 1/2 INCH HAIL WITH THE STORM. BRANCHES AND PARTS OF THE STORAGE SHED WERE VISIBLE 100 FEET IN THE AIR. AN UNCONFIRMED REPORT OF A FUNNEL CLOUD SIGHTING AT GRAND LAKE... 16 NORTH OF APN...WAS ALSO RECEIVED AT WSO ALPENA. BOTH REPORTS WERE MUCH TO LATE FOR ISSUANCE OF WARNINGS...THE STORMS WERE WELL OUT OVER LAKE HURON WHEN THE REPORTS WERE RECEIVED. CURTIS
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; the sounding from the Mesonet's radiosonde archive.