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Connell Miller

@connellmiller.ca
2.3K followers 187 following 54 posts

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!

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Connell Miller @connellmiller.ca · 13/09/2026
Proud to see the @cssl.ca Internship Program featured on the front page of the Toronto Star this morning! Check it out here: www.thestar.com/gift-redeem?...
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Northern Mesonet Project @westernunmp.bsky.social · 01/09/2026
Thank you to the 1000's of people who have tried out weather.cssl.ca over the weekend! As a reminder, you can get a free beta-tester account over at www.uwo.ca/nmp/news/202...
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Northern Mesonet Project @westernunmp.bsky.social · 27/08/2026
We're excited to introduce CSSL Weather Intelligence - the next generation of (and new name for) the Canadian Mesonet Portal. weather.cssl.ca brings together weather observations, numerical weather models, radar, satellite, and historical event data in a single platform.
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Connell Miller @connellmiller.ca · 17/08/2026
T-minus 10 days! @westernunmp.bsky.social @meso.cssl.ca
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Northern Tornadoes Project 🇨🇦 @westernuntp.bsky.social · 13/08/2026
Another milestone for the Northern Tornadoes Project! During the 2026 season, we had our first first all-women damage survey teams since the start of the NTP in 2017. Details at the NTP blog: www.uwo.ca/ntp/blog/202...
uwo.ca
Another NTP milestone - our first all-women damage survey teams
Another NTP milestone - we had our first first all-women damage survey teams during the 2026 season
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Connell Miller @connellmiller.ca · 07/08/2026
Excited to be presenting at #32SLS about the lofted train car analysis from the EF5 Enderlin, ND tornado! Will also be showing some results from “Version 2.0” of the debris trajectory model. Tune in at 11:30 CDT if you’re interested! #AMSMadisonSummit
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Northern Mesonet Project @westernunmp.bsky.social · 15/05/2026
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!
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Northern Tornadoes Project 🇨🇦 @westernuntp.bsky.social · 05/05/2026
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...
actionnetwork.org
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...
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Connell Miller @connellmiller.ca · 17/04/2026
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...
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Connell Miller @connellmiller.ca · 09/04/2026
If you had told me six months ago that I would be leading an education-focused paper, I probably wouldn’t have believed you. However, this paper turned out to be a great opportunity to highlight the success of the CSSL Internship Program and its impact on undergraduate students.
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Connell Miller @connellmiller.ca · 09/04/2026
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...
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Northern Mesonet Project @westernunmp.bsky.social · 07/04/2026
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...
uwo.ca
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...
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Connell Miller @connellmiller.ca · 06/04/2026
Sorry if you saw any weird tweets from me. Account somehow got hacked!
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Northern Mesonet Project @westernunmp.bsky.social · 06/04/2026
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!
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Northern Mesonet Project @westernunmp.bsky.social · 02/03/2026
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...
uwo.ca
Western University
Western University, in vibrant London, Ontario, delivers an academic and student experience second to none.
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Connell Miller @connellmiller.ca · 28/02/2026
Hi Connor, Our hosting provider (Western University) is having some connectivity issues, and therefore so are we. It might take until Monday to get back up. Weather data is still being archived, even if the front end is not accessible!
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Connell Miller @connellmiller.ca · 19/02/2026
View of the "maximum estimated size of hail" product on meso.cssl.ca
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Connell Miller @connellmiller.ca · 19/02/2026
(Nothing too crazy though)
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Connell Miller @connellmiller.ca · 19/02/2026
Some unexpected lightning and hail today in NE London! #onstorm #onwx
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Western University @westernu.ca · 20/01/2026
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
buff.ly
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
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Western Space @westernuspace.bsky.social · 09/12/2025
🌪️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
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Northern Mesonet Project @westernunmp.bsky.social · 02/12/2025
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/...
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Canadian Severe Storms Lab @cssl.ca · 01/12/2025
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.
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Connell Miller @connellmiller.ca · 26/11/2025
These papers highlight complementary remote sensing approaches that can help improve spatial coverage and consistency of tornado intensity assessments. Grateful for @cssl.ca team who made these studies possible!
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Connell Miller @connellmiller.ca · 26/11/2025
"Evaluating the Utility of NDVI as a Damage Indicator for Crops in the Enhanced Fujita Scale" tests how NDVI changes can be used to identify crop damage from tornadoes, describes limitations, and shows how NDVI can supplement ground surveys in agricultural areas (doi.org/10.1175/JAMC...).
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Connell Miller @connellmiller.ca · 26/11/2025
"Synthetic Aperture Radar as a Tool for Tornado Classification in Forested Areas" demonstrates how SAR can reveal tornado damage signatures in strong tornadoes, offering a way to provide EF-scale ratings in heavily forested regions where optical imagery struggles (doi.org/10.1080/0703...).
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Connell Miller @connellmiller.ca · 26/11/2025
I'm happy to share two @cssl.ca open-access remote sensing papers that are both related to alternative methods of classifying tornado damage! 🧵:
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The Weather Network @weathernetwork.bsky.social · 06/10/2025
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...
theweathernetwork.com
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.
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Mike 🇨🇦 @ontariowedges.bsky.social · 06/10/2025
Amazing work by Ontario's own Dr. Connell Miller of NTP!
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Northern Tornadoes Project 🇨🇦 @westernuntp.bsky.social · 06/10/2025
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
Drone photo courtesy Brian Emfinger and used with permission.
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Connell Miller @connellmiller.ca · 06/10/2025
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
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Dave Sills 🍁🌪️🎶⚓☮️ @davesills.ca · 04/10/2025
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.
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Connell Miller @connellmiller.ca · 17/09/2025
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...
doi.org
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...
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Northern Mesonet Project @westernunmp.bsky.social · 21/08/2025
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
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Connell Miller @connellmiller.ca · 14/07/2025
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
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Nathan Howes TWN @natetwnclimate.bsky.social · 06/07/2025
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...
theweathernetwork.com
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
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Dave Sills 🍁🌪️🎶⚓☮️ @davesills.ca · 30/06/2025
Video of tornado crossing Hwy 4 SE of Lucan, ON #ONstorm. Not for broadcast except TWN or other permission.
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Northern Mesonet Project @westernunmp.bsky.social · 26/06/2025
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...
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Connell Miller @connellmiller.ca · 24/06/2025
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...
youtube.com
Expert explains how a ‘downburst’ caused the severe damage in northern Ont.
YouTube video by CTV News
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Northern Mesonet Project @westernunmp.bsky.social · 23/06/2025
It's a scorcher in Southwestern Ontario today! Current peak temperature is in east Toronto at 37.2°C! #onwx Source: @meso.cssl.ca
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Northern Mesonet Project @westernunmp.bsky.social · 22/06/2025
Some incredible rainfall rates recorded last night in Central-Eastern Ontario. #ONwx #ONStorm Source: @meso.cssl.ca
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Northern Mesonet Project @westernunmp.bsky.social · 30/05/2025
129.2 km/h wind gust reported at Edmonton Airport on the @meso.cssl.ca ! #abwx #abstorm
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Northern Mesonet Project @westernunmp.bsky.social · 20/05/2025
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...
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Canadian Severe Storms Lab @cssl.ca · 14/05/2025
Big crowd for this month’s CSSL Seminar now that all of the interns have started (there are even more online). Speaking today is Dr. Connell Miller, Director of CSSL’s Northern Mesonet Project (@westernunmp.bsky.social), on experimental tornado wind estimation methods. @westernuresearch.bsky.social
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Northern Mesonet Project @westernunmp.bsky.social · 16/05/2025
Incredibly strong wind gust of 102 km/h reported in Chatham, ON last night at 2AM! Check out meso.cssl.ca to see the data!
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Northern Mesonet Project @westernunmp.bsky.social · 05/02/2025
A very big update is now live on the Canadian Mesonet Portal! This includes new meteorological variables, saving / exporting settings and more! For more details, you can check out the link below. But here are the main highlights for you to see in a 🧵: www.uwo.ca/nmp/news/202...
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Connell Miller @connellmiller.ca · 07/01/2025
Right before the start of the new year, my family got a little bit bigger! Everyone is happy and healthy! (And tired)
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Northern Mesonet Project @westernunmp.bsky.social · 12/12/2024
The Canadian Mesonet Portal (meso.cssl.ca) now has 167 new stations from the Alberta Government’s Ministry of Agriculture and Irrigation! #CANwx #SkyWX #WXsky #Weather #Canada
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Canadian Severe Storms Lab @cssl.ca · 04/12/2024
Dive into real-world research and fieldwork with the CSSL Summer Internship Program! Learn more and apply here: uwo.ca/cssl/internships/index.html Don't miss your chance to gain hands-on experience with leading hail and tornado experts in the field. Applications close on January 27th.
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