Illinois, 1999

Damaging Winds and Lightning Strike in Illinois, June 11, 1999

June 11, 1999 · NWS LOT · 3 events in 2 counties and zones

2 thunderstorm wind, 1 lightning, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 1 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

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The toll

Deaths
0
Injuries
2
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.

The radar

The Chicago radar (KLOT), 96 km away, was scanning. The volume nearest the first event began at 19:34 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind, 1 lightning. Local standard time, as filed.

Thunderstorm Wind, Iroquois

When
June 11, 1:34 PM CST
Where
Iroquois County, Watseka
Measured
51 kt (59 mph)
Reported by
LAW ENFORCEMENT
Coordinates
40.780, -87.730

A 59 mph wind gust was recored at the Emergency Operation Center. Trees were blown down.

Thunderstorm Wind, Cook

When
June 11, 3:20 PM CST
Where
Cook County, Park Ridge
Measured
52 kt (60 mph)
Reported by
TRAINED SPOTTER
Coordinates
42.030, -87.870

A spotter reported 55 to 60 mph winds. Tree limbs were blown down in Alsip and a limb fell on a car in Palos Heights.

Lightning, Cook

When
June 11, 3:30 PM CST
Where
Cook County, Chicago
Injuries
2 direct, 0 indirect
Reported by
NEWSPAPER
Coordinates
41.895, -87.646 (the zone’s center; the record gives no point)

Lightning struck a tree, causing a limb to fall on a car on the southwest side of Chicago.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Lightning
A lightning strike that killed, injured or caused damage.

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

The same day elsewhere

More

Every storm in Illinois in 1999Every state in 1999This day in weather historyWarnings in Illinois, June 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 2026-09-24. Each event’s entry at NCEI: 5709902, 5709901, 5709900.