Illinois, 1998

Flooding in Illinois, August 5, 1998

August 5, 1998 · NWS LSX · 3 events in 3 counties and zones

Rainfall of 3 to 4 inches overnight caused some flooding across the area. Water was reported over Route 159 south of Hecker in Monroe County and some street flooding was reported in Millstadt in St.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

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 LSX wrote it up.

Rainfall of 3 to 4 inches overnight caused some flooding across the area. Water was reported over Route 159 south of Hecker in Monroe County and some street flooding was reported in Millstadt in St. Clair County. Flooding was also reported along Plum Creek east of Okawville in Washington County.

The radar

The national radar mosaic for the moment the first event began.

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Event by event

3 flood. Local standard time, as filed.

Flood, Monroe

When
August 5, 7:00 AM CST to 9:00 AM CST
Where
Monroe County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
38.279, -90.177 (the zone’s center; the record gives no point)

Flood, St. Clair

When
August 5, 7:00 AM CST to 9:00 AM CST
Where
St. Clair County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
38.470, -89.928 (the zone’s center; the record gives no point)

Flood, Washington

When
August 5, 7:00 AM CST to 9:00 AM CST
Where
Washington County, Countywide
Reported by
LAW ENFORCEMENT
Coordinates
38.352, -89.410 (the zone’s center; the record gives no point)

What these are

Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

More

Every storm in Illinois in 1998Every state in 1998This day in weather historyWarnings in Illinois, August 1998

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: 5660702, 5660703, 5660704.