NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Pop-up thunderstorms are yet again expected in parts of Eastern Ontario around the Ottawa Valley during the afternoon on Tuesday. As we saw on Monday, the main risk will be the lightning that could lead to more wildfires. Otherwise, these storms are expected to remain non-severe.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Northern Ontario on Tuesday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Northern Ontario on Monday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Isolated pop-up thunderstorms are possible in Eastern and Central Ontario during the afternoon and evening on Monday. While these storms are expected to remain non-severe, the biggest threat will be the lightning combined with very dry conditions that may lead to additional wildfires. And due to the localized nature of these storms, we don’t expect they will put much of a dent in the fire risk situation across the region.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Sunday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are possible in Northwestern Ontario on Sunday afternoon and evening. The best chance for storms is from Kenora through Dryden and into Thunder Bay. A few of these storms around Kenora, Red Lake, Drydent and Sioux Lookout could reach isolated severe levels with large hail and damaging wind gusts. The environment isn’t favourable for a tornado risk, but keep in mind that any thunderstorm has the potential to strike and produce a tornado.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Saturday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Non-severe thunderstorms are possible in Northwestern Ontario on Saturday. The best chance for storms is right along the Manitoba border.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
THURSDAY PM UPDATE: The latest data remains consistent with our preliminary forecast from Wednesday. We have expanded the non-severe thunderstorm risk into the GTA. The ‘isolated’ severe risk zone is more for the flash flooding potential due to the slow-moving nature of these storms. If we see large hail, damaging wind gusts and maybe even a tornado it will be likely east of Ottawa where a few supercells can’t be ruled out.
After a very long break from thunderstorm activity in Southern Ontario, that streak is about to end with the potential risk for severe storms in Central and Eastern Ontario on Friday.
We expect to see the development of isolated pop-up thunderstorms across Central Ontario during the afternoon into the early evening. While most of these storms should remain non-severe, we have gone with an isolated severe risk as these storms will be moving quite slowly and could present a flash flooding threat. Could also see some small hail and strong wind gusts.
Some of the latest model data suggest that there could be a fairly strong severe threat in Extreme Eastern Ontario in the Cornwall area to the east of Ottawa. Models are showing an intense cluster of storms developing over Quebec by the late afternoon and sinking southward into Eastern Ontario. We believe the potential exists for up to 100 km/h wind gusts and quarter-sized hail. An isolated tornado can’t be ruled out either.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Isolated pop-up non-severe thunderstorms are possible across much of Northern Ontario on Friday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Thursday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Isolated severe thunderstorms are possible stretching from Fort Frances through Thunder Bay and into parts of Northeastern Ontario on Thursday. Storms are expected to develop during the early afternoon hours and slowly track to the southeast throughout the rest of the afternoon into the evening.
While they should be non-severe for the most part, there is the potential for a few storms to bring marginally severe hail and wind gusts. An isolated tornado can’t be ruled out but the overall risk is fairly low.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Wednesday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
A line of isolated storms is expected to develop in Northwestern Ontario during the afternoon on Wednesday and slowly track to the southeast throughout the day. Current indications suggest that the environment is favourable for this line of storms to feature a few discrete supercells in the more remote parts of Extreme Northern Ontario.
This includes locations such as Lansdown House and Fort Hope where we have a slight risk for severe storms. These storms could produce up to toonie-sized hail and 100+ km/h wind gusts. The potential is also there for an isolated tornado, although due to the low population density in this region, any tornado will likely not pose a threat to human life and probably go unrecorded.
An isolated risk of severe storms extends into Sioux Lookout, Armstrong, Attawapiskat and Fort Albany. They could see some marginally severe hail and wind gust gusts as the line of storms move through. The rest of Northern Ontario can expect non-severe thunderstorm activity primarily during the later part of Wednesday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Tuesday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Non-severe thunderstorms are possible across much of Northwestern Ontario on Tuesday afternoon and evening. The severe risk appears minimal, but the strongest storms will be right along the Manitoba border.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Monday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Northern Ontario on Monday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Northern Ontario on Sunday.
NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.
Thunderstorms are currently not expected across Southern Ontario on Sunday.
