Alert archive / Michigan / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 32, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 19, 1987, 7:25 PM EDT for Alcona County, Alpena County, Michigan. It was in force for 50 min.
The area
The counties it named.
The facts
- Issued
- Jul 19, 1987, 7:25 PM EDT (23:25 UTC)
- Expired
- Jul 19, 1987, 8:15 PM EDT
- In force
- 50 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
Counties Alcona County, MI, Alpena 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
Sault Ste Marie, MI (KSSM), launched 12:00Z, 11.4 hours before the alert went out and 189 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
- 1 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 586 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 278 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KAPN 192325 SVRAPN MIC007-001-200015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE ALPENA MI 725 PM EDT SUN JUL 19 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 815 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHEAST LOWER MICHIGAN...ALPENA AND NORTHERN ALCONA ...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE COUNTIES JUST MENTIONED AT 720 EDT A SEVERE THUNDERSTORM WAS OVER NORTH ALCONA COUNTY MOVING TO THE EAST NORTHEAST AT 25 MILES AN HOUR. IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORECED SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND LIGHTNING. REMEMBER...SEVERE THUNDERSTORMS CAN AND SOMETIMES DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT. NAME..
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, Jul 19, 4:10 PM EDT, 3 hours 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALPENA MI 550 PM EDT SUN JUL 12 1987 AT 4 PM EDT...A LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM ROGERS CITY IN PRESQUE-ISLE COUNTY TO HOUGHTON LAKE IN ROSCOMMOM COUNTY. THESE THUNDERSTORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR. PERSONS SHOULD BE ON THE ALERT FOR GUSTY WINDS...HEAVY RAIN AND FREQUENT LIGHTNING AS THESE STORMS PASS THROUGH NORTHEAST LOWER MICHIGAN. THESE THUNDERSTORMS ARE EXPECTED TO MOVE OUT OVER LAKE HURON BY 530 PM EDT. DS
Special weather statement, Jul 19, 4:15 PM EDT, 3 hours 10 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION FOR DATE TIME IN HEADING... NATIONAL WEATHER SERVICE ALPENA MI 410 PM EDT SUN JUL 19 1987 AT 4 PM EDT...A LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM ROGERS CITY IN PRESQUE-ISLE COUNTY TO HOUGHTON LAKE IN ROSCOMMOM COUNTY. THESE THUNDERSTORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR. PERSONS SHOULD BE ON THE ALERT FOR GUSTY WINDS...HEAVY RAIN AND FREQUENT LIGHTNING AS THESE STORMS PASS THROUGH NO#RTHEAST LOWER MICHIGAN. THESE THUNDERSTORMS ARE EXPECTED TO MOVE OUT OVER LAKE HURON BY 530 PM EDT. DS
Special weather statement, Jul 19, 5:39 PM EDT, 1 hour 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALPENA MI 530 PM EDT SUN JUL 19 1987 AT 525 PM EDT...A LINE OF VERY STRONG THUNDERSTORMS EXTENDED FROM GORE BAY...MANITOULIN ISLAND CANADA SOUTHWEST OVER NORTH CENTRAL LAKE HURON TO TAWAS CITY IN IOSCO COUNTY OF NORTHEAST LOWER MICHIGAN. THESE THUNDERSTORMS WERE MOVING EAST AT ABOUT 25 MILES AN HOUR. THE HEAVIEST ACTIVITY WAS OVER NORTH CENTRAL LAKE HURON IS NO LONGER A THREAT TO PERSONS IN NOxRTHEAST LOWER MICHIGAN OR BOATERS ALONG THE NEARSHORE OF LAKE HURON. THIS WILL BE THE LAST STATEMENT CONCERNING THESE THUNDERSTORMS. DS
Local storm report, Jul 19, 6:38 PM EDT, 47 minutes before
STORM REPORT NATIONAL WEATHER SERVICE ALPENA MI 630 PM EDT SUN JUL 19 1987 REPORTS FROM STATE POLICE POST TAWAS CITY IOSCO COUNTY UNCONFIRMED TORNADO REPORTED AT APPROXIMATELY 535 EDT...TOUCHDOWN IN GRANT TOWNSHIP NEAR SAND LAKE CORNERS AND M55. PATH NORTHEAST 8 OR 9 MILES LIFTING AND TOUCHING DOWN. TREES AND BUILDINGS DOWN... POWER LINES DOWN. SOME FIRES STARTED DUE TO DOWNED POWER LINES. ACCORDING TO THE THE STATE POLICE...THE DAMAGE ALL APPEARED TO BE OF THE STRAIGHT LINE TYPE. DS
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.