Connell Miller
@connellmiller.ca
Director of the Northern Mesonet Project at the Canadian Severe Storms Lab; Adjunct Professor at Western University. Connecting all of Canada’s weather networks over at meso.cssl.ca!
Canadian Mesonet Portal Update! ⚡ The new Severe Storm Summaries feature automatically compiles a 24-hour overview of severe weather activity across Canada by combining multiple datasets (lightning, weather stations, alerts, radar-indicated severe weather signatures) into a single interactive map!
It's Emergency Preparedness Week, and your help is needed on a related letter-writing campaign. ECCC has decided to shut down its long-standing radar research program. This affects severe weather warnings, and the work of the NTP and its partners. Details here: actionnetwork.org/letters/reve...
Reverse the Loss of ECCC Severe Weather Radar Science
Environment and Climate Change Canada (ECCC) recently disbanded its High Impact Weather Research section that included radar research. The radar research group was tasked with ensuring that our new $1...
actionnetwork.org
New (open-access) paper! This full-scale wind tunnel study investigates the wind loading of architectural rooftop screens and their influence on the wind loads experienced by roof-mounted equipment (RME). Check it out here: doi.org/10.1080/2374...
I'm excited to share that my latest paper focused on the internship program at @cssl.ca is now available as an early online release in the Bulletin of the American Meteorological Society! doi.org/10.1175/BAMS...
Big update 🚀 We’ve launched the Pro Version of the Canadian Mesonet Portal, along with major improvements across all versions of the platform! Pro Version features will continue rolling out gradually throughout the month, so keep an eye out! Details: www.uwo.ca/nmp/news/202...
Canadian Mesonet Portal Update (v2026.04.05): Pro Version & More!
This release introduces the Pro Version of the Canadian Mesonet Portal, a major expansion of the platform focused on deeper data access, and advanced analysis tools. Alongside the Pro Version, we’ve d...
uwo.ca
Sorry if you saw any weird tweets from me. Account somehow got hacked!
We are currently implementing a large update to the Canadian Mesonet Portal (meso.cssl.ca), which will result in data being temporarily unavailable for the next 24 hours. Please be patient with us as we work to make the site even better!
The Northern Mesonet Project at the Canadian Severe Storms Laboratory (@cssl.ca) is looking for a Research Software Engineer to join our team! Please feel free to share with anyone who may be interested! You can find the details of the position (ID# 41923) here: www.uwo.ca/hr/working/s...
Western University
Western University, in vibrant London, Ontario, delivers an academic and student experience second to none.
uwo.ca
Fifth-year #WesternU student Sophia Slabon made a course correction that led her to global learning, community collaboration, fieldwork in geographical sciences and publishing research as an undergrad. 🌍 Read how she's working to future-proof the planet. ⬇️ #AllinWesternU
Geography degree offers hands-on study across faculties - Western News
Geography degree at Western leads Sophia Slabon to thrive with experiential learning and options to study in different faculties for a customized degree
buff.ly
🌪️A Radar technique has been applied to study tornado tracks in forested areas for the 1st time by @westernu.ca ES prof @planetneish.bsky.social + co-authors Sophia Slabon + Connell Miller at the Canadian Severe Storms Lab. 🔗https://www.tandfonline.com/doi/full/10.1080/07038992.2025.2579315#abstract
A small update from @meso.cssl.ca: we have updated our watches / warnings displayer to match the new colour-coded weather alert system used by Environment Canada. You can find more information on the new system here: www.canada.ca/en/services/...
Dive into real-world research and fieldwork with the CSSL Summer Internship Program! Learn more and apply here: uwo.ca/cssl/interns... Don't miss your chance to gain hands-on experience with leading tornado and hail experts in the field. Applications close on January 26th.
I'm happy to share two @cssl.ca open-access remote sensing papers that are both related to alternative methods of classifying tornado damage! 🧵:
A violent, EF-5 tornado struck Enderlin, N.D., on June 20, 2025--the first instance of a twister given that designation in the U.S. since the Moore, Okla., event in May 2013. #NDwx www.theweathernetwork.com/en/news/weat...
The U.S. sees its first EF-5 tornado in more than 4,400 days - The Weather Network
A violent, EF-5 tornado struck Enderlin, N.D., on June 20, 2025--the first instance of a twister given that designation in the U.S. since the Moore, Okla., event in May 2013.
theweathernetwork.com
Amazing work by Ontario's own Dr. Connell Miller of NTP!
Connell Miller@connellmiller.ca · 10mo agoExcited to announce that my method for estimating wind speeds based on lofted debris in tornadoes was used as contextual evidence for upgrading the Enderlin, ND tornado to an EF5! doi.org/10.1175/MWR-... #NDwx #Enderlin #EF5 #Tornado
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
Excited to announce that my method for estimating wind speeds based on lofted debris in tornadoes was used as contextual evidence for upgrading the Enderlin, ND tornado to an EF5! doi.org/10.1175/MWR-... #NDwx #Enderlin #EF5 #Tornado
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.
New (open-access) paper from myself and @davesills.ca! This was a rare opportunity to examine data from a meteorological tower directly hit by a tornado. Results support mobile radar-based theory that tornado winds intensify near the ground, where most damage occurs. doi.org/10.1080/0705...
Multi-Level In-Situ Measurements During a Direct Hit by a Significant Tornado
A rare direct hit by a significant tornado on a weather station is documented, with a peak 1-s wind gust of 53.1 m/s (191.2 km/h) and a surface pressure deficit of 16.0 hPa recorded. Even more unco...
doi.org
Crazy winds caught by @meso.cssl.ca from the storms on August 20th in AB/SK. Maximum wind speed of nearly 150 km/h recorded in Atlee, AB. Hail track from the MESH product also showed intense hail (~75 mm) #abstorm #abwx #skstorm #skwx
Some serious hail being reported from the Northern Mesonet Project hail stations in Calgary. Up to 40-45mm hail in NW Calgary, with multiple stations recording 100s of hail impacts within a 10 minute period. #abstorm #abwx Source: @meso.cssl.ca / @westernunmp.bsky.social
Reinforcing wall-to-roof connections, @connellmiller.ca said, would allow homes to withstand 95 per cent of tornadoes that occur in Canada. While potent winds can threaten homes, heavy rain and wildfires account for the bulk of #ClimateChange-related damage. www.theweathernetwork.com/en/news/clim...
Climate-proofing homes more important than ever, say experts - The Weather Network
Using 12-inch screws for roof-to-wall connections would make homes more resilient to tornadoes
theweathernetwork.com
Video of tornado crossing Hwy 4 SE of Lucan, ON #ONstorm. Not for broadcast except TWN or other permission.
A new update is now live on @meso.cssl.ca! This update allows for viewing historical weather station data both on the map and in graphs. Currently we have up to January 1, 2025 available, but aim to make more historical data available soon! You can see more details here: www.uwo.ca/nmp/news/202...
Had the chance to chat with CTV News about the downburst in Samuel de Champlain Provincial Park on June 21! #onwx #onstorm www.youtube.com/watch?v=8GaO...
Expert explains how a ‘downburst’ caused the severe damage in northern Ont.
YouTube video by CTV News
youtube.com
It's a scorcher in Southwestern Ontario today! Current peak temperature is in east Toronto at 37.2°C! #onwx Source: @meso.cssl.ca
Some incredible rainfall rates recorded last night in Central-Eastern Ontario. #ONwx #ONStorm Source: @meso.cssl.ca
Another big update is now live on @meso.cssl.ca! This includes hail impact reports, maximum estimated size of hail (MESH) layers, present weather reports, and other minor updates to our display options. You can learn more about this update here: www.uwo.ca/nmp/news/202...
