Heat, Winneshiek
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Winneshiek forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 43.291, -91.844 (the zone’s center; the record gives no point)
Heat in Iowa, July 23 to 25, 1999
Excessive heat and humidity affected northeast Iowa for three consecutive days. Afternoon highs reached into the 90s, producing afternoon heat indices of 105 to 115 .
Where it happened
Every event with a place to put it; 8 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
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 8
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 ARX wrote it up.
Excessive heat and humidity affected northeast Iowa for three consecutive days. Afternoon highs reached into the 90s, producing afternoon heat indices of 105 to 115 . No deaths directly related to the heat were reported.
The radar
The national radar mosaic for the moment the first event began.
Event by event
8 heat. Local standard time, as filed.
Heat, Mitchell
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Mitchell forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 43.356, -92.789 (the zone’s center; the record gives no point)
Heat, Howard
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Howard forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 43.357, -92.317 (the zone’s center; the record gives no point)
Heat, Floyd
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Floyd forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 43.060, -92.789 (the zone’s center; the record gives no point)
Heat, Fayette
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Fayette forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 42.863, -91.844 (the zone’s center; the record gives no point)
Heat, Clayton
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Clayton forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 42.845, -91.341 (the zone’s center; the record gives no point)
Heat, Chickasaw
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Chickasaw forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 43.060, -92.318 (the zone’s center; the record gives no point)
Heat, Allamakee
- When
- July 23, 10:00 AM CST to July 25, 11:00 PM CST
- Where
- Allamakee forecast zone
- Reported by
- NEWSPAPER
- Coordinates
- 43.284, -91.378 (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 23 to 31, 1999
- Heat in Pennsylvania, July 23 to 31, 1999
- Heat in Wisconsin, July 23 to 31, 1999
- Hail and Damaging Winds in Michigan, July 23, 1999
- Heat in Minnesota, July 23 to 25, 1999
- Heat in Maryland, July 23 to 31, 1999
- Heat in South Carolina, July 23, 1999
- Heat in Arkansas, July 23, 1999
- Heat in Delaware, July 23 to 31, 1999
- Hail and Damaging Winds in Wisconsin, July 23, 1999
- Tornadoes and Hail in Michigan, July 23, 1999
- Hail and Damaging Winds in Ohio, July 23, 1999
More
Every storm in Iowa in 1999Every state in 1999This day in weather historyWarnings in Iowa, 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 2026-10-01. Each event’s entry at NCEI: 5707674, 5707675, 5707676, 5707677, 5707678, 5707679, 5707680, 5707681.