Alert archive / Michigan / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 10, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 9, 1987, 1:35 PM EDT for Antrim County, Michigan. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Jul 9, 1987, 1:35 PM EDT (17:35 UTC)
- Expired
- Jul 9, 1987, 2:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County Antrim 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, 5.6 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1280 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMKG 091735 SVRMKG MIC009-091830- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MUSKEGON MI 135 PM EDT THU JUL 9 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHWEST LOWER MICHIGAN...ANTRIM AT 129 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES NORTHEAST OF TRAVERSE CITY...IN NORTHWEST LOWER MICHIGAN...OVER THE CITY OF BELLAIRE...MOVING TOWARD THE EAST AT 25 MPH. 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. 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, Jul 9, 10:32 AM EDT, 3 hours 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAULT STE MARIE MI 1045 AM EDT THU JUL 9 1987 ...HEAVY THUNDERSTORMS RUMBLING OVER EASTERN UPPER MICHIGAN... RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM JUST EAST OF GRAND MARIAS SOUTH TO TROUT LAKE AND ACROSS THE MACKINAW BRIDGE AREA SOUTH TO CROSS VILLAGE AND CHARLEVOIX. SOME OF THESE THUNDERSTORMS ARE QUITE INTENSE IN NATURE AS HEAVY RAIN..GUSTY WINDS..POSSIBLE HAIL AND FREQUENT LIGHTNING ARE POSSIBLE. THE LINE OF THUNDERSTORMS WAS MOVING TO THE EAST NORTHEAST AT 15 TO 20 MPH. IF THREATENING WEATHER APPROACHES..BE PREPARED TO SEEK SAFE SHELTER IMMEDIATELY. SHNOWSKI
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 2:17 PM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau, Manistee | 58 min |
| Jul 9, 4:00 PM EDT | Severe Thunderstorm Warning | APX | Luce, Mackinac | 60 min |
| Jul 9, 5:10 PM EDT | Severe Thunderstorm Warning | APX | Kalkaska | 35 min |
| Jul 9, 7:02 PM EDT | Severe Thunderstorm Warning | APX | Newaygo | 43 min |
| Jul 9, 7:28 PM EDT | Severe Thunderstorm Warning | APX | Lake | 42 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.