Michigan, 1999

Flash Flood in Michigan, July 21, 1999

July 21, 1999 · NWS GRR · 1 event in 1 county or zone

Heavy rain moved into Allegan County during the early morning hours. 75 inches of rain fell in the city of Allegan in one hour.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$10,000
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GRR wrote it up.

Heavy rain moved into Allegan County during the early morning hours. 2.37 inches of rain fell in less than 2 hours in Plainwell, and 2.75 inches of rain fell in the city of Allegan in one hour. This caused minor roadway flooding in Plainwell, and in the city of Allegan.

The radar

The Grand Rapids radar (KGRR), 51 km away, was scanning. The volume nearest the first event began at 12:00 UTC.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Allegan

When
July 21, 7:00 AM EST to 7:30 AM EST
Where
Allegan County, Countywide
Property damage
$10,000
Reported by
TRAINED SPOTTER
Coordinates
42.518, -85.910 (the zone’s center; the record gives no point)

Weather spotters reported minor roadway flooding in Plainwell and in the city of Allegan.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Michigan in 1999Every state in 1999This day in weather historyWarnings in Michigan, July 1999

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5720320.