Heat, Madison
- When
- July 18, 12:00 PM CST to July 22, 6:00 PM CST
- Where
- Madison forecast zone
- Injuries
- 9 direct, 0 indirect
- Reported by
- NEWSPAPER
- Coordinates
- 38.830, -89.905 (the zone’s center; the record gives no point)
Heat in Illinois, July 18 to 22, 1998
High temperatures in the middle to upper 90s along with Heat Index readings around 110 resulted in some heat related injuries in Madison and St. Clair counties.
Where it happened
Every event with a place to put it; 2 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
The toll
- Deaths
- 0
- Injuries
- 19
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 2
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.
High temperatures in the middle to upper 90s along with Heat Index readings around 110 resulted in some heat related injuries in Madison and St. Clair counties.
The radar
The national radar mosaic for the moment the first event began.
Event by event
2 heat. Local standard time, as filed.
Heat, St. Clair
- When
- July 18, 12:00 PM CST to July 22, 6:00 PM CST
- Where
- St. Clair forecast zone
- Injuries
- 10 direct, 0 indirect
- Reported by
- NEWSPAPER
- Coordinates
- 38.470, -89.928 (the zone’s center; the record gives no point)
What these are
- Heat
- Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Missouri, July 18 to 22, 1998
- Tornado and Hail in North Dakota, July 18, 1998
- Damaging Winds in Iowa, July 18, 1998
- Damaging Wind in South Dakota, July 18, 1998
- Damaging Wind in Iowa, July 18, 1998
- Flash Flooding in West Virginia, July 18 to 19, 1998
- Damaging Wind in Minnesota, July 18, 1998
- Heat in Missouri, July 18 to 21, 1998
- Flood in Florida, July 18, 1998
- Damaging Wind in Minnesota, July 18, 1998
- Damaging Wind in Iowa, July 18, 1998
- Damaging Wind in Minnesota, July 18, 1998
More
Every storm in Illinois in 1998Every state in 1998This day in weather historyWarnings in Illinois, July 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: 5663395, 5663396.