Iowa, 1999

Heat in Iowa, July 28 to 30, 1999

July 28 to 30, 1999 · NWS ARX · 8 events in 8 counties and zones

Yet another period of excessive heat and humidity affected northeast Iowa. Afternoon highs reached the middle 90s to 100, while heat indices of 110 to 120 were common.

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

Open the live radar over this ground

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.

Yet another period of excessive heat and humidity affected northeast Iowa. Afternoon highs reached the middle 90s to 100, while heat indices of 110 to 120 were common. No deaths directly related to the oppressive heat and humidity were reported.

The radar

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

Open the radar archive at this moment

Event by event

8 heat. Local standard time, as filed.

Heat, Allamakee

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Allamakee forecast zone
Reported by
NEWSPAPER
Coordinates
43.284, -91.378 (the zone’s center; the record gives no point)

Heat, Chickasaw

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Chickasaw forecast zone
Reported by
NEWSPAPER
Coordinates
43.060, -92.318 (the zone’s center; the record gives no point)

Heat, Clayton

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Clayton forecast zone
Reported by
NEWSPAPER
Coordinates
42.845, -91.341 (the zone’s center; the record gives no point)

Heat, Fayette

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Fayette forecast zone
Reported by
NEWSPAPER
Coordinates
42.863, -91.844 (the zone’s center; the record gives no point)

Heat, Floyd

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Floyd forecast zone
Reported by
NEWSPAPER
Coordinates
43.060, -92.789 (the zone’s center; the record gives no point)

Heat, Howard

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Howard forecast zone
Reported by
NEWSPAPER
Coordinates
43.357, -92.317 (the zone’s center; the record gives no point)

Heat, Mitchell

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Mitchell forecast zone
Reported by
NEWSPAPER
Coordinates
43.356, -92.789 (the zone’s center; the record gives no point)

Heat, Winneshiek

When
July 28, 10:00 AM CST to July 30, 8:00 PM CST
Where
Winneshiek forecast zone
Reported by
NEWSPAPER
Coordinates
43.291, -91.844 (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

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: 5707666, 5707667, 5707668, 5707669, 5707670, 5707671, 5707672, 5707673.