Alert archive / Michigan / Flash Flood Warnings in 1987
Flash Flood Warning 1, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flash flood warning at Jul 9, 1987, 1:43 PM EDT for Gratiot County, Michigan. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 9, 1987, 1:43 PM EDT (17:43 UTC)
- Expired
- Jul 9, 1987, 4:00 PM EDT
- In force
- 2 hr
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
County Gratiot 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, 5.7 hours before the alert went out and 115 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
- 1043 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 22 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 091743 RRA FFWLAN MIC057-092000- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LANSING MI 143 PM EDT THU JUL 9 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 400 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF CENTRAL LOWER MICHIGAN...GRATIOT AT 140 PM RADAR INDICATED VERY SLOW MOVING THUNDERSTORMS PRODUCING EXTREMELY HEAVY RAIN ACROSS SOUTHERN GRATIOT COUNTY. WATER WAS RISING QUICKLY WITH WATER LEVELS AT HUB CAP LEVEL 8 MILES SOUTH OF ITHACA. STRONG GUSTY WINDS HAVE ALSO BEEN REPORTED WITH TREES AND POWER LINES DOWN. IF YOU ARE IN THE WARNED COUNTY IN AN AREA SUBJECT TO FLOODING MOVE TO HIGHER GROUND. FORTUNE
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, Jul 9, 12:16 PM EDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1215 PM EDT THU JUL 9 1987 ...STRONG THUNDERSTORMS MOVING THROUGH THE GRAND RAPIDS AREA... AT 1205 PM EDT...WEATHER RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS IN THE SOUTHERN HALF OF KENT COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. PEA SIZE HAIL HAS BEEN REPORTED WITH THESE THUNDERSTORMS. A REPORT OF WIND GUSTS TO NEAR 50 MPH PER HOUR AND AN INCH AND ONE HALF OF RAAIN IN FIVE MINUTES WERE ALSO RECEIVED PERSONS IN SOUTHERN KENT COUNTY SHOULD BE ON THE LOOKOUT FOR BRIEF HEAVY RAINS...DANGEROUS LIGHTNING...SMALL HAIL AND SOME STRONG WIND GUSTS/IN THESE STORMS AS THEY MOVE THROUGH THE AREA. CARLE
Special weather statement, Jul 9, 12:22 PM EDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1215 PM EDT THU JUL 9 1987 ...STRONG THUNDERSTORMS MOVING THROUGH THE GRAND RAPIDS AREA... AT 1205 PM EDT...WEATHER RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS IN THE SOUTHERN HALF OF KENT COUNTY. THE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. PEA SIZE HAIL HAS BEEN REPORTED WITH THESE THUNDERSTORMS. A REPORT OF WIND GUSTS TO NEAR 50 MPH PER HOUR AND .72 INCHES OF RAINFALL IN FIVE MINUTES WERE ALSO RECEIVED. PERSONS IN SOUTHERN KENT COUNTY SHOULD BE ON THE LOOKOUT FOR BRIEF HEAVY RAINS...DANGEROUS LIGHTNING...SMALL HAIL AND SOME STRONG WIND GUSTS IN THESE STORMS AS THEY MOVE THROUGH THE AREA. CARLKE
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 12:32 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Kent | 28 min |
| Jul 9, 12:43 PM EDT | Severe Thunderstorm Warning | GRR | Gratiot | 62 min |
| Jul 9, 12:51 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 69 min |
| Jul 9, 1:18 PM EDT | Tornado Warning | GRR | Ionia | 27 min |
| Jul 9, 2:10 PM EDT | Severe Thunderstorm Warning | GRR | Isabella | 18 min |
| Jul 9, 3:01 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 59 min |
| Jul 9, 3:02 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 33 min |
| Jul 9, 3:18 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 57 min |
| Jul 9, 3:30 PM EDT | Severe Thunderstorm Warning | GRR | Eaton, Ingham | 60 min |
| Jul 9, 4:27 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 33 min |
| Jul 9, 7:21 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Kent | 24 min |
| Jul 9, 7:45 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Kent | 30 min |
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.