Illinois, 2000

Heat in Illinois, August 31, 2000

August 31, 2000 · NWS DVN · 9 events in 9 counties and zones

A frontal boundary stalled to the south of the region. Southerly winds ahead of the front pumped hot and humid air northward into the region.

Where it happened

Every event with a place to put it; 9 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
9

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 DVN wrote it up.

A frontal boundary stalled to the south of the region. Southerly winds ahead of the front pumped hot and humid air northward into the region. Temperatures topped out in the lower to middle 90s. These hot temperatures combined with high humidity resulted in dangerous heat indices of 105 to 115 degrees during the afternoon.

The radar

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

Open the radar archive at this moment

Event by event

9 heat. Local standard time, as filed.

Heat, Bureau

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Bureau forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.404, -89.529 (the zone’s center; the record gives no point)

Heat, Hancock

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Hancock forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.404, -91.165 (the zone’s center; the record gives no point)

Heat, Henderson

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Henderson forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.818, -90.925 (the zone’s center; the record gives no point)

Heat, Henry

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Henry forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.353, -90.131 (the zone’s center; the record gives no point)

Heat, McDonough

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
McDonough forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.456, -90.678 (the zone’s center; the record gives no point)

Heat, Mercer

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Mercer forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.205, -90.741 (the zone’s center; the record gives no point)

Heat, Putnam

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Putnam forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.205, -89.286 (the zone’s center; the record gives no point)

Heat, Rock Island

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Rock Island forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.467, -90.567 (the zone’s center; the record gives no point)

Heat, Warren

When
August 31, 4:21 AM CST to 11:00 PM CST
Where
Warren forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.849, -90.615 (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 Illinois in 2000Every state in 2000This day in weather historyWarnings in Illinois, August 2000

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: 5171798, 5171799, 5171800, 5171801, 5171802, 5171803, 5171804, 5171805, 5171806.