Alert archive / Michigan / Flash Flood Warnings in 1987
Flash Flood Warning 7, NWS Detroit, MI
NWS Detroit, MI issued this flash flood warning at Sep 8, 1987, 4:49 PM EDT for Genesee County, Michigan. It was in force for 116 min.
The area
The counties it named.
The facts
- Issued
- Sep 8, 1987, 4:49 PM EDT (20:49 UTC)
- Expired
- Sep 8, 1987, 6:45 PM EDT
- In force
- 116 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Genesee 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, 8.8 hours before the alert went out and 40 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
- 21 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1240 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 60 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 KFNT 082049
FFWFNT
MIC049-082245-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLINT MI
449 PM EDT TUE SEP 8 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 645 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN EAST CENTRAL MICHIGAN
...GENESEE
SINCE 400 PM EDT THIS AFTERNOON 1.38 INCHES OF RAIN HAS FALLEN AT
FLINT BISHOP AIRPORT WITH LOCALLY HEAVIER AMOUNTS POSSIBLE IN
OUTLYING AREAS. MOST UNDERPASSES IN GENESEE COUNTY HAVE AT LEAST 1
FOOT OF WATER STANDING..WITH LOW LYING AREAS BEGINNING TO FILL AT
THIS TIME. HEAVY RAINS ARE EXPECTED TO CONTINUE FOR AT LEAST THE NEXT
HOUR..ADDING TO THE PRESENT FLASH FLOOD DANGER.
FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A OSMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.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, Sep 8, 4:35 PM EDT, 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLINT MI 430 PM EDT TUE SEP 08 1987 THUNDERSTORMS WITH HEAVY RAIN MOVE INTO EAST CENTRAL MICHIGAN AS OF 420 PM EDT THIS EVENING THUNDERSTORMS WITH HEAVY RAIN AND DANGEROUS LIGHTENING WERE OVER EAST CENTRAL LOWER MICHIGAN. THE HEAVY RAIN HAS REDUCED VISIBILITY TO LESS THAN 1/2 MILE AND FLOODING OF STREETS UNDERPASSES AND LOW LYING AREAS IS LIKELY. ADDITIONAL HEAVY RAIN IS LIKELY DURRING THE NEXT HOUR AS THE THUNDERSTORMS CONTINUE TO MOVE THROUGH THE FLINT AND SURROUNDING AREA. MOTORISTS ARE URGED TO USE CAUTION WHILE TRAVELING AND PERSONS IN FLOOD PRONE AREAS SHOULD BE ALERT FOR POSSIBLE FLOODING. STAY TUNED TO NOAA WEATHER RADIO OR> LOCAL TELEVISION AND RADIO STATIONS FOR FURTHER UPDATES AND POSSIBLE WARNINGS. BURNS
Nearby
Flash Flood Warnings in Michigan, 1987Every flash flood 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.