Thunderstorm Outlook

Valid: DAY, MONTH ##, 2020

Forecaster: Brennen Perry

Issued: DAY, MONTH ##, 2020 - ##AM/PM

NOTE: The tornado risk zone outlines the region with the highest probability of tornadoes, but tornadoes may occur outside of the zone.

Timing	Southwestern: Golden Horseshoe: Central: Eastern: Northeastern:

Not sure what region you are in? Click here for a map showing the regions across Southern Ontario. Northeastern Ontario is north of North Bay (not shown on map).

Thunderstorm Threatcast

Thunderstorm Confidence	Questionable (10%) Low (25%) Moderate (50%) High (75%) Very High (90%)
Severe Confidence	Very Unlikely (5%) Questionable (10%) Low (25%) Moderate (50%) High (75%) Very High (90%)
Tornadoes	Unlikely Isolated One or Two Several Strong Outbreak
Max Wind Gusts	80+ kmh \| 50+ mph 90+ kmh \| 56+ mph 95+ kmh \| 59+ mph 100+ kmh \| 62+ mph 110+ kmh \| 68+ mph 120+ kmh \| 75+ mph
Max Hail Size	Penny ~2cm \| ~0.75" Quarter ~2.5cm \| ~1" Toonie ~3cm \| ~1.2" Walnut ~4cm \| ~1.5" Golf Ball ~4.5cm \| ~1.75" Tenis Ball ~6.5cm \| ~2.5"
Max 24-hr Rainfall	~25 mm \| ~1" ~50 mm \| ~2" ~75 mm \| ~3" ~100 mm \| ~4" ~150 mm \| ~6" ~200 mm \| ~8"