Alert archive / Michigan / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 3, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at May 21, 1987, 11:33 PM EDT for Muskegon County, Michigan. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- May 21, 1987, 11:33 PM EDT (03:33 UTC)
- Expired
- May 22, 1987, 12:30 AM EDT
- In force
- 57 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.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.6 hours before the alert went out and 206 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
- 2886 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1006 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMKG 220344 COR SVRMKG MIC121-220430- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MUSKEGON MI 1138 PM EDT THU MAY 21 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1230 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF WEST CENTRAL LOWER MICHIGAN...MUSKEGON AT 1124 PM EDT RADAR INDICATED SEVERE THUNDERSTORMS 8 MILES NORTHWEST AND 25 MILES WEST OF MUSKEGON MICHIGAN MOVING TOWARD THE NORTHEAST AT 35 MILES AN HOUR. THE SEVERE THUNDERSTORM WARNING FOR MASON AND OCEANA COUNTIES MICHIGAN EXPIRED AT 1130PM EDT. SMALL HAIL WAS REPORTED NEAR SILVER LAKE AND A SHIP REPORT RECEIVED FROM THE MUSKEGON COAST GUARD STATED THAT THE CHARLES M. BEAGLY REPORTED WINDS IN EXCESS OF 90 KNOTS WITH THE PASSAGE OF THE STORMS 38 MILES NORTHWEST OF MUSKEGON...GREATER THAN 114 MILES AN HOUR. IF YOU ARE IN THE PATH OF THIS STORM...GET TO A REINFORCED BUILDING. BOATERS SHOULD SEEK SAFE HARBOR NOW! GALLOWAY
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
Special weather statement, May 21, 5:37 PM EDT, 5 hours 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALPENA MI 535 PM EDT THU MAY 21 1987 AT 530 PM EDT RADAR INDICATED A VERY STRONG THUNDERSTORM LOCATED 15 MILES DUE EAST OF LEWISTON IN MONTMORENCY COUNTY OF NORTHEAST LOWER MICHIGAN. MOVEMENT WAS TO THE EAST NORTHEAST AT ABOUT 20 MILES AN HOUR. THIS THUNDERSTORM COULD PRODUCE GUSTY WIND...HEAVY RAIN AND DANGEROUS LIGHTNING. PERSONS IN SOUTHEAST MONTMORENCY COUNTY SHOULD BE ON THE ALERT AND> TAKE SHELTER IF THREATENING WEATHER CONDITIONS OCCUR. DS
Special weather statement, May 21, 6:18 PM EDT, 5 hours 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALPENA MI 614 PM EDT THU MAY 21 1987 AT 608 PM EDT VERY HEAVY THUNDERSTROMS WERE OCCURING OVER OSCODA COUNTY IN NORTHEAST LOWER MICHIGAN. THESE THUNDERSTORMS WERE MOVING TO THE EAST AT ABOUT 15 MILE AN HOUR. THESE THUNDERSTORMS COULD PRODUCE...HAIL...GUSTY WIND AND DANGEROUS LIGHTNING AS THEY PASS THROUGH OSCODA AND ALCONA COUNTIES OF NORTHEAST LOWER MICHIGAN. THIS CONDITION WILL EXIST UNTIL o7PM EDT IN OSCODA COUNTY AND 830 PM EDT IN ALCONA COUNTY. PERSONS IN OSCODA AND ALCONA COUNTIES SHOULD BE ON THE ALERT AND TAKE SHELTER IF THREATENING WEATHER CONDITIONS OCCUR. DS
Special weather statement, May 21, 6:24 PM EDT, 5 hours 9 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION...ADD HEAVY RAIN TO LINE 5... NATIONAL WEATHER SERVICE ALPENA MI 614 PM EDT THU MAY 21 1987 AT 608 PM EDT VERY HEAVY THUNDERSTROMS WERE OCCURING OVER OSCODA COUNTY IN NORTHEAST LOWER MICHIGAN. THESE THUNDERSTORMS WERE MOVING TO THE EAST AT ABOUT 15 MILE AN HOUR. THESE THUNDERSTORMS COULD PRODUCE...HAIL...GUSTY WIND...DANGEROUS LIGHTNING...ALONG WITH HEAVY RAIN AS THE PASS THROUGH OSCODA AND ALCONA COUNTIES OF NORTHEAST LOWER MICHIGAN. THIS CONDITION WILL EXIST UNTIL 7PM EDT IN OSCODA COUNTY AND 830 PM EDT IN ALCONA COUNTY. PERSONS IN OSCODA AND ALCONA COUNTIES SHOULD BE ON THE ALERT AND TAKE SHELTER IF THREATENING WEATHER CONDITIONS OCCUR. DtS
Special weather statement, May 21, 7:34 PM EDT, 3 hours 59 minutes before
SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE ALPENA MI 730 PM EDT THU MAY 21 1987 AT 725 PM EDT VERY HEAVY THUNDERSTROMS WERE OCCURING OVER 10 MILES NORTHWEST OF LINCOLN IN ALCONA COUNTY OF NORTHEAST LOWER MICHIGAN. THIS WAS PART OF AN AREA OF HEAVY THUNDERSTROMS AND RAIN WHICH WAS OVER SOUTHERN ALPENA COUNTY AND ALL OF ALCONA COUNTY. MOVEMENT WAS TO THE EAST NORTHEAST AT ABOUT 15 MILES AN HOUR. THESE THUNDERSTORMS COULD PRODUCE...HAIL...GUSTY WIND...DANGEROUS LIGHTNING...ALONG WITH HEAVY RAIN AS THE PASS OVER SOUTHERN ALPENA COUNTY AND ALCONA COUNTY AS WELL AS THE LAKE HURON SHORELINE BETWEEN SOUTH POINT AND HARRISVILLE. THIS CONDITION WILL EXIST UNTIL 9PM WHEN THESE THUNDERSTORMS WILL BE OVER THE OPEN WATERS OF LAKE HURON. PERSONS IN SOUTHERN ALPENA AND ALCONA COUNTIES AND THE NEAR SHORE AREA OF LAKE HURON BETWEEN SOUTH POINT AND HARRISVILLE SHOULD BE ON THE ALERT FOR THREATENING WEATHER AND TAKE SHELTER IF THREATENING WEATHER OCCURS. DS
Special weather statement, May 21, 7:37 PM EDT, 3 hours 56 minutes before
SPECIAL WEATHER AND MARINE STATEMENT...CORRECTION... NATIONAL WEATHER SERVICE ALPENA MI 730 PM EDT THU MAY 21 1987 AT 725 PM EDT VERY HEAVY THUNDERSTROMS WERE OCCURING 10 MILES NORTHWEST OF LINCOLN IN ALCONA COUNTY OF NORTHEAST LOWER MICHIGAN. THIS WAS PART OF AN AREA OF HEAVY THUNDERSTROMS AND RAIN WHICH WAS OVER SOUTHERN ALPENA COUNTY AND ALL OF ALCONA COUNTY. MOVEMENT WAS TO THE EAST NORTHEAST AT ABOUT 15 MILES AN HOUR. THESE THUNDERSTORMS COULD PRODUCE...HAIL...GUSTY WIND...DANGEROUS LIGHTNING...ALONG WITH HEAVY RAIN AS THE PASS OVER SOUTHERN ALPENA COUNTY AND ALCONA COUNTY AS WELL AS THE LAKE HURON SHORELINE BETWEEN SOUTH POINT AND HARRISVILLE. THIS CONDITION WILL EXIST UNTIL 9PM WHEN THESE THUNDERSTORMS WILL BE OVER THE OPEN WATERS OF LAKE HURON. PERSONS IN SOUTHERN ALPENA AND ALCONA COUNTIES AND THE NEAR SHORE AREA OF LAKE HURON BETWEEN SOUTH POINT AND HARRISVILLE SHOULD BE ON THE ALERT FOR THREATENING WEATHER AND TAKE SHELTER IF THREATENING WEATHER OCCURS. DS
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 10:34 PM EDT | Severe Thunderstorm Warning | APX | Mason, Oceana | 56 min |
| May 21, 10:34 PM EDT | Severe Thunderstorm Warning | APX | Muskegon | 56 min |
| May 22, 2:51 AM EDT | Severe Thunderstorm Warning | APX | Lake | 29 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1987Every severe thunderstorm warning in 1987
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.