Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 3, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at May 6, 1986, 11:36 AM EDT for Ingham County, Jackson County, Michigan. It was in force for 9 min.
The area
The counties it named.
The facts
- Issued
- May 6, 1986, 11:36 AM EDT (15:36 UTC)
- Expired
- May 6, 1986, 11:45 AM EDT
- In force
- 9 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Ingham County, MI, Jackson 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, 3.6 hours before the alert went out and 86 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
- 358 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 979 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAN 061536 SVRLAN MIC065-075-061545- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LANSING MI 1136 AM EDT TUE MAY 6 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1145 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL LOWER MICHIGAN...SOUTHERN INGHAM AND NORTHERN JACKSON THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR SOUTHERN INGHAM AND NORTHERN JACKSON COUNTIES. THE WARNING IS VALID UNTIL 1145 AM EDT THIS MORNING. THE SEVERE THUNDERSTORMS WERE LOCATED BY RADAR ALONG THE INGHAM..JACKSON BORDERS AND WERE MOVING EAST AT AROUND 40 MPH. AT 1115 THE STORMS WERE LOCATED ABOUT 40 MILES SOUTHEAST OF LANSING. IF YOU ARE IN THE PATH OF THIS STORM..GET TO A REINFORCED BUILDING. SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WINDS..LARGE HAIL..VERY HEAVY RAIN..AND FREQUENT LIGHTNING. THEY CAN AND OCCASIONALLY DO SPAWN A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT.
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 6, 10:15 AM EDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1015 AM EDT TUE MAY 6 1986 ...THUNDERSTORMS NEAR KALAMAZOO... AT 1007 AM EDT RADAR FROM SOUTH BEND INDIANA INDICATED AN INTENSE THUNDERSTORM SOUTHEAST OF THE CITY OF KALAMAZOO. THIS THUNDERSTORM IS CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 40 MPH AS IT PASSES OVERHEAD. THE THUNDERSTORM IS MOVING EAST AT 40 MPH. IF THREATENING WEATHER IS SIGHTED BE PREPARED TO MOVE TO A @PLACE OF SAFTEY. CARLE
Special weather statement, May 6, 10:51 AM EDT, 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 1030AM EDT TUE MAY 6 1986 ...STRONG THUNDERSTORM OVER SOUTHERN LOWER MICHIGAN... AT 1030 AM EDT RADAR SHOWED A VERY STRONG THUNDERSTORM OVER NORTHEAST INGHAM COUNTY AND A LINE OF THUNDERSTORMS EXTENDING FROM SOUTHWEST EATON COUNTY SOUTH THROUGH CALHOUN AND BRANCH COUNTIES INTO NORTH INDIANA. BATTLE CREEK EMERGENCY SERVICES REPORTED HEAVY RAIN AND FREQUENT LIGHTNING IN A 1015 STORM BUT LITTLE WIND AND NO HAIL. A STORM NEAR MARSHALL HAD 40 TO 45 MPH GUSTS AND SMALL HAIL HEAVY WITH FREQUENT LIGHTNING. REAL SMALL HAIL AND HEAVY RAIN WAS REPORTED IN SOUTHWEST BRANCH COUNTY AT 1030. THE STORMS WERE MOVING EAST NORTHEAST AT UP TO a40 MPH. ENT
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 4:43 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 27 min |
| May 6, 6:38 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 52 min |
| May 6, 7:10 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Jackson | 45 min |
| May 6, 7:10 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 65 min |
| May 6, 7:43 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 47 min |
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.