United States

Severe Weather in Ontario, United States

Right now

No severe weather recorded here in the last 24 hours.

The most recent data we hold from NOAA arrived 14 minutes ago. We record detections, not passes: an absence is not proof that nothing is there.

24, recorded here, since 9 May 2026

No events recorded in the last 30 days. Most recent: 12 August 2026 (80 days ago).

The 5th strongest of the 24 recorded here since 9 May 2026.

By month

  • May 20264
  • June 20266
  • July 202612
  • August 20262

July 2026 is the most active month of the 4 in our series here, with 12 events.

Recent events

Severe WeatherMedium

Severe Thunderstorm Warning

12 August 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

12 August 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

22 July 2026time not reported by the sourceIndex 34 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

21 July 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

21 July 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

21 July 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Flash Flood Warning

19 July 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherMedium

Flash Flood Warning

18 July 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherCritical

Tornado Warning

18 July 2026time not reported by the sourceIndex 58 · version not recorded
Severe WeatherCritical

Tornado Warning

18 July 2026time not reported by the sourceIndex 58 · version not recorded
Severe WeatherCritical

Tornado Warning

18 July 2026time not reported by the sourceIndex 67 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

18 July 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherCritical

Tornado Warning

18 July 2026time not reported by the sourceIndex 67 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

18 July 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

18 June 2026time not reported by the sourceIndex 34 · version not recorded3 independent sources
Severe WeatherMedium

Severe Thunderstorm Warning

18 June 2026time not reported by the sourceIndex 39 · version not recorded3 independent sources
Severe WeatherMedium

Severe Thunderstorm Warning

18 June 2026time not reported by the sourceIndex 43 · version not recorded2 independent sources
Severe WeatherMedium

Severe Thunderstorm Warning

11 June 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

11 June 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

11 June 2026time not reported by the sourceIndex 37 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

13 May 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

10 May 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

10 May 2026time not reported by the sourceIndex 43 · version not recorded
Severe WeatherMedium

Severe Thunderstorm Warning

9 May 2026time not reported by the sourceIndex 43 · version not recorded

Other areas

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

Administrative boundaries: geoBoundaries (geoboundaries.org), Public Domain. geoboundaries.org