The Chuck Doswell Memorial Session at the European Conference on Severe Storms, and @hebrooks87.bsky.social is putting on what he calls ‘Storytime with Uncle Harold’. On work he and Chuck had done on training for flash flooding. Spellbound audience. #ECSS

The NTP has confirmed 11 new ON tornadoes based on AI-assisted satellite review. All caused EF1-EF2 tree damage. These are in addition to 5 tornadoes already confirmed in ON via AI-assisted satellite review. All sectors in Ontario have now been reviewed. Details: uwo.ca/ntp/blog/202... #ONstorm

Quite a bit of snow overnight in Londontario! Will measure later but looks like 20 cm, on top of around 5 cm already on the ground - at least here in Old North. Roads are in pretty bad shape currently. #ONstorm #LdnOnt

An intense, nearly stationary lake-effect snow band sets up off southern Lake Huron overnight and some models (like the Canadian HRDPS) give London perhaps 30+ cm by late Tuesday morning. Given so many leaves still on trees this could be a major problem. Keeping an eye on this! #ONstorm #LdnOnt

So one unscientific source for seasonal forecasts down, one more to go... www.thestar.com/news/world/u...

Ontario’s own @thebeaches.bsky.social put on one hell of a rock show tonight in #Londontario. Bangers from start to finish. And two marriage proposals during the encore - is this a new thing?? Second show tomorrow - don’t miss it. #BlueskyMusic

It’s begun. Just saw the first snowflakes of the season in Londontario. Could see up to 10 cm by Tuesday, and likely more in typical snowbelt areas. #WinterIsComing

A lot of folks in Ontario seem to have missed this news. There is no good take on it. The CAs are science based with domains defined by watersheds and they are locally accountable. Ford wants less roadblocks for his developer buddies i.e. more building in flood plains etc. www.cbc.ca/news/canada/...

The ImpactWX Genesis Grant is now accepting applications! For the past 3 years I’ve served on the Advisory Council to support this grant which provides funding to community organizations developing new ideas related to severe weather response and awareness. Details here: impactwx.com/genesis-grant

The details may be different, but all models are in agreement that the lake-effect snow machine kicks in early next week. Will very likely be 15+ centimetres in some of the snowbelt regions. Get those winter tires on! :-) #WinterIsComing #ONstorm

A few surprise low-CAPE high-shear supercells yesterday NW of Toronto. Weak rotation aloft and not much at lower levels. But severe hail reported at various locations. Maybe up to 3 cm diameter. In some places covering the ground. Among the most severe storms of the year in those areas. #ONstorm

It's been interesting watching what the various models do with the remnants of #Melissa - the Canadian GDPS has been persistent with a western track through Newfoundland. All other models took it east, but are now bending toward the GDPS solution, and taking aim at St. John's early Sun morning.

Alrighty, ready to see something really cool? (and maybe a little nauseating) The evolution of Hurricane Melissa's mesovortices at peak strength.

Claims to be from #HurricaneMelissa in the town of Black River, Jamaica - which is on the southwest side of the island. If so, that's some catastrophic surge. Thoughts are with all Jamaicans!

The NTP has confirmed nine new Quebec tornadoes for 2025 based on our end-of-season satellite review, assisted by an AI detection algorithm. The damage in each case was only to trees, with one tornado rated EF2 and eight rated EF1. Details: uwo.ca/ntp/blog/202... #meteoQC

Cheers to the Toronto Blue Jays for winning Game 1 of the World Series last night 11-4! Three more wins to go! #BlueJays #WorldSeries #WantItAll 🇨🇦⚾🐦

Ok I don’t know about you all, but I’ve already been through the emotional ring just with the anthem at this Blue Jays game. 🥹 LETS GO BLUE JAYS ❤️🇨🇦⚾️🏟️ ❤️🍁🇨🇦TEAM CANADA FOREVER🇨🇦🍁❤️ ❤️🍁🇨🇦VIVE LE CANADA 🇨🇦🍁❤️

Attended the closing night of Shakespeare's As You Like It last night at Stratford, ON's Festival Theatre. All the world's indeed a stage, and I was pleasantly surprised at the production. In particular, the songs that @ronsexsmith.bsky.social had a hand in creating - just the right touch. Congrats!

If Carney is waiting for a sign, this is it - the orange tyrant can cut off good-faith negotiations whenever his feelings get hurt, whenever he likes. He could do the same *after* an agreement is 'signed'. There's no point in negotiating with the US to try to save the trade relationship. It's over.

The NTP has confirmed five concurrent tornadoes over water (waterspouts) over Lake Erie off Long Point on Oct 21. Details at the NTP blog here: uwo.ca/ntp/blog/202... #ONstorm

Woo friggin’ hoo!! Let’s go #BlueJays!!!

Jasper 2024 Wildfire Complex: Documentation, Reconstruction and Analysis Following a highly destructive 2024 wildfire in Jasper, Alberta, a study was completed to describe the behaviour and contributing environmental factors associated with this event. ostrnrcan-dostrncan.canada.ca/entities/pub...

Vladimir Guerrero Jr.’s 6th home of the postseason ties him with Joe Carter and José Bautista for the most postseason home runs in #BlueJays history.

Heartstopping moment with bases loaded, but what a double play! Yes - again ;-) #Bluejays

Heartstopping moment with bases loaded, but what a double play! #Bluejays

Small area of weak rotation up at the northern end of Georgian Bay, with a 'broken-S' signature showing up on Britt (CASBI) radar. #ONstorm

Non-zero tornado threat over central parts of southern ON with this convective line developing now. I've found that the SPC Mesonanalysis 'tornadic tilting and stretching parameter' seems to work well in such situations. And it's showing enhanced potential. Will be keeping an eye on this... #ONstorm

Excellent Toronto Star article on #AI through the lens of the late media master Marshall McLuhan. Some very useful do's and don't's. Gift article so should be no paywall. www.thestar.com/business/opi...

The orange tyrant just dropped an F-bomb in a press conference. I really thought there was not much left that he could do that would shock me, but here we are. #Disgraceful

I grew up listening to the North American release of Help! (on 8-track). It was the movie soundtrack, so featured a number of classical numbers interspersed among the Beatles hits. IMHO they are just as memorable - and was first use of sitar on a Beatles album :-) music.youtube.com/watch?v=ekYH...

A while back I had heard that there was a memorial plaque in Barrie, ON for the victims of the 31 May 1985 F4 tornado there. I lived for a while in Barrie and never saw it. I finally found it - and of course it’s in ‘Shear’ Park. #ONstorm

Here's the radar at right about the time of the the EF5 damage near Enderlin, ND, from KMVX (Fargo). Intense azimuthal shear. Given there was a massive, high-intensity QLCS bearing down on the area, I have to wonder if the QLCS had an influence on the supercell/tornado intensity at Enderlin. #NDwx

The CSSL/NTP assisted the US National Weather Service (NWS) with their upgrading of the official rating of the June 2025 Enderlin, ND tornado from EF3 to EF5. Announced by the NWS today, it’s the first EF5-rated tornado in the US since 2013. Details here: uwo.ca/ntp/blog/202... Image B. Emfinger

I've created a Bluesky Starter Pack called 'Canadian Severe Storms Community'. Makes it easy to find and follow severe storm forecasters, researchers, chasers and enthusiasts in Canada! go.bsky.app/9eQf9Zd Please let me know if you'd like to be added or if you think someone else needs to be added.

The first forested area to be searched with NTP's new AI tool - Northern Ontario east of Lake Superior - turned up five tornadoes, including one rated EF2. These were all manually verified and documented. Details here: uwo.ca/ntp/blog/202... #ONstorm Lots more to come...

Following a thorough satellite review for storm tracks of interest, the NTP has confirmed three new EF1 tornadoes from earlier in the season in Quebec. The first two occurred on April 29 and the third on June 23. Details at: uwo.ca/ntp/blog/202... #meteoQC

The NTP has confirmed three new tornadoes and upgraded a downburst damage rating in Northern Ontario. Details here: uwo.ca/ntp/blog/202... #ONstorm

Love this - from today’s Globe and Mail.

The NTP has confirmed four EF2 tornadoes in western Quebec during the late afternoon and evening hours of September 5. In each case there was considerable tree damage. Full details can be found here: uwo.ca/ntp/blog/202... #meteoQC

The Canadian Women's Rugby team are on an unprecedented run, and could take the world championship today in a game against England. Watch on 11 am EDT! Go #TeamCanada!!!

I parked on the @westernu.ca campus and was walking toward my building when I heard a bird that stopped me in my tracks. There were two bald eagles in a dead tree at the edge of the Thames River not 50 m away. One flew away but I got a quick pic of the other one. Amazing nature in the city! #LdnOnt

New (conference) paper alert! 'Missed' EF2 tornadoes in Canada and the role of radar from the 41st AMS International Conference on Radar Meteorology in Toronto. Thanks to co-authors @lesleyelliott.bsky.social, @shobenase.bsky.social and Norman Donaldson. www.researchgate.net/publication/...

Just watched the great new doc on Sarah McLachlan’s #LilithFair. I regret not going - I loved all the artists that played. I think I just misunderstood it at the time. But overall, given the cultural moment we are in now, it really just seems like it happened on another planet. How sad is that?

New paper alert! "Multi-Level In-Situ Measurements During a Direct Hit by a Significant Tornado" in A-O. Observations from a 2010 F2 tornado at a Harrow, ON-area wind farm show that peak winds do increase closer to the ground, supporting DOW radar measurements/analysis. doi.org/10.1080/0705...

Tornado warning up for southwestern Manitoba with supercell / storm rotation moving NNW near Medora. Take shelter if in the area. #MBstorm

Good article: to find "a way to skate to where the puck is inevitably going", "a federal climate competitiveness strategy is more important than it might sound." Mark Carney's climate hinge point is at hand www.nationalobserver.com/2025/09/10/o...

With the 10 tornadoes added today from past months, the 2025 national tornado count goes to 66. Which is tied for 2017 at this point in the season for the *least* number of tornadoes since NTP began in 2017. And is almost half of what Canada experienced last year. Will be looking into the why...

The NTP has confirmed an additional 6 tornadoes for the Prairie provinces based on witness reports - 2 in AB, 3 in SK and 1 in MB. An EF0-Default rating is assigned for each since no damage was reported or detected. See the NTP blog for details: uwo.ca/ntp/blog/202... #ABstorm #SKstorm #MBstorm

An additional 4 tornadoes have been confirmed by NTP for Quebec from June based on satellite imagery review. There was 1 EF2 tornado and 3 EF1 tornadoes. Details at the NTP blog here: uwo.ca/ntp/blog/202.... Tornadoes are plotted on a regional map below. #meteoQC #QCstorm

I'll be surprised if these two supercells southeast of Val D'Or, QC are not producing tornadoes. Moving northeast, about to cross Hwy 117. These are severe warned but not tornado warned, so you won't see an alert on your cell phone. But probably a good idea to take shelter if in the area. #meteoQC