Alert archive / Michigan / Flash Flood Warnings in 1986
Flash Flood Warning 2, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flash flood warning at Jun 11, 1986, 9:44 PM EDT for Eaton County, Ingham County, Michigan. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 11, 1986, 9:44 PM EDT (01:44 UTC)
- Expired
- Jun 12, 1986, 2:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Eaton County, MI, Ingham 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 00:00Z, 1.7 hours before the alert went out and 97 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
- 1637 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 547 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAN 120144 FFWLAN MIC045-065-120600- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LANSING MI 944 PM EDT WED JUN 11 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 200 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTH CENTRAL LOWER MICHIGAN...EATON AND INGHAM THIS WARNING INCLUDES THE GREATER LANSING AREA. STRONG THUNDERSTORMS CONTINUE TO PRODUCE EXTREMELY HEAVY RAIN OVER CENTRAL LOWER MICHIGAN...PARTICULARLY IN EATON AND INGHAM COUNTIES. SMALL STREAMS WILL RISE RAPIDLY AND LOW AREAS WILL HAVE SUBSTANTIAL AMOUNTS OF HIGH WATER AS THE HEAVY DOWNPOURS CONTINUE. A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR HAS 4BEEN REPORTED. TAKE ACTION TO SAFEGUARD LIFE AND PROPERTY. THIS EXTENDS THE FLASH FLOOD WARNING FOR INGHAM COUNTY AND ADDS THE EATON COUNTY INTO THE FLASH FLOOD WARNING AREA.
What forecasters said that day
The local office's own words before this flash flood 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, Jun 11, 4:51 PM EDT, 4 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LANSING MI
450 PM EDT WED JUN 11 1986
....TORNADO WATCH FOR SOUTHERN LOWER MICHIGAN UNTIL 9 PM EDT...
...STRONG THUNDERSTORM IN CENTRAL LOWER MICHIGAN...
AT 445 PM EDT A STRONG THUNDERSTORM WAS IN SOUTHERN IONIA COUNTY MOVING
TO THE NORTHEAST AT 15 TO 20 MPH. THIS MOVEMENT WILL BRING THE STORM
INTO CLINTON COUNTY BETWEEN 5 AND 6 PM EDT. VERY HEAVY RAIN...SMALL
HAIL...GUSTY WINDS AND DANG\EROUS LIGHTNING CAN BE EXPECTED WITH THIS
STORM.
THE SLOW MOVEMENT OF THIS STORM WILL ALSO CAUSE FLOODING IN LOW
AREAS.
FORTUNESpecial weather statement, Jun 11, 5:20 PM EDT, 4 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LANSING MI
520 PM EDT WED JUN 11 1986
....TORNADO WATCH FOR SOUTHERN LOWER MICHIGAN UNTIL 9 PM EDT...
...STRONG THUNDERSTORM IN CENTRAL LOWER MICHIGAN...
AT 515 PM EDT A STRONG THUNDERSTORM WAS IN CENTRAL EATON COUNTY MOVING
EAST NORTHEAST AT 20 MPH. THIS STORM WILL MOVE INTO THE CITY OF LANSING
BETWEEN 520 AND 6 PM EDT AND WILL PRODUCE VERY HEAVY RAIN...SMALL HAIL
...GUSTY WINDS AND DANGqEROUS LIGHTNING.
THE SLOW MOVEMENT OF THIS STORM WILL ALSO CAUSE ADDITIIONAL FLOODING
IN LOW AREAS THAT WILL ADD TO THE PROBLEM CREATED BY HEAVY RAIN EARLIER
IN THE AFTERNOON.
FORTUNESpecial weather statement, Jun 11, 8:41 PM EDT, 1 hour 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 840 PM EDT WED JUN 11 1986 ....TORNADO WATCH FOR SOUTHERN LOWER MICHIGAN UNTIL 9 PM EDT... AT 830 PM EDT A STRONG THUNDERSTORM WAS IN SOUTHERN BARRY COUNTY...ABOUT 15 MILES NORTH OF BATTLE CREEK MICHIGAN. THE STORM WAS MOVING NORTHEAST AND WILL MOVE INTO WESTERN EATON COUNTY NEAR VERMONTVILLE BETWEEN 9 PM AND 930 PM EDT. HEAVY RAIN...DANGEROUS LIGHTNING AND STRONG WIND WAS REPORTED8 IN THE NASHVILLE AREA...30 MILES SOUTHWEST OF LANSING. AT 830 PM EDT. FORTUNE
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:41 PM EDT | Tornado Warning | GRR | Kent | 29 min |
| Jun 11, 8:47 PM EDT | Tornado Warning | GRR | Barry | 28 min |
| Jun 11, 9:05 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 55 min |
| Jun 11, 9:23 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Ingham | 37 min |
| Jun 11, 9:49 PM EDT | Flash Flood Warning | GRR | Ingham | 11 min |
Nearby
Flash Flood Warnings in Michigan, 1986Every flash flood 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.