Director of the @westernuNMP at @westernuCSSL; Adjunct Professor at @WesternU. Connecting all of Canada’s weather networks over at https://nitter.cf/t.co/xpWWiA512z!
London, Ontario
Joined January 2015
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Thanks to the great work done here, CSSL Weather Intelligence (weather.cssl.ca) is now able to provide the WOOF-NAM with 66 total fields (34 of them being post-processed by CSSL)!
NOAA retired the NAM last week. We thought it deserved to live on, so we ported it to the GPU and open-sourced it.
We’re running the 12 km CONUS NAM ourselves, four times a day (00/06/12/18Z, 84 h, started from GFS), with the hourly files free for anyone: same awphys GRIB2 shape as NOAA’s, so an old NAM fetcher just needs a new host.
woof-nam.recastsystems.com/i…
The 12 km shape is in the WOOF API today, 5 km and 4 km CONUS this week, so you can run your own cycles any time from GFS or IFS.
CSSL Weather Intelligence (weather.cssl.ca) now has support for ensemble models, drawing tools, and historical data going back to 1952! We've also overhauled the mobile app. Check out the full changelog here: uwo.ca/nmp/news/2026/update_…
Proud to see the Canadian Severe Storms Laboratory (CSSL) Internship Program featured on the front page of the Toronto Star this morning!
Check it out here: thestar.com/gift-redeem?t=0e…
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 uwo.ca/nmp/news/2026/update_…
I'm 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.
You can learn more about @CSSLWeather (including how to get a free beta tester account) here: uwo.ca/nmp/news/2026/update_…
Great to see the new thunderstorm alert polygons from ECCC! We've already got something rudimentary up at meso.cssl.ca, but a more advanced version will be coming by the end of August (sneak peek below!)
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
Wildfires burning in northwestern Ontario are having a major impact on air quality across southwestern Ontario today, with widespread smoke and hazy skies being reported across the region. #onwx
Connell Miller retweeted
#Abstorm July 4th NE of Torrington.
⚠️ GIANT HAIL ⚠️
A summary of the June 9th storms in SK/MB from meso.cssl.ca, including lightning data, weather stations that experienced severe wind/rain, and ECCC warnings. Includes a max wind gust speed of 167 km/h! #skstorm #mbstorm
A summary of the June 7, 2026 storms in SK/MB! The new "Severe Storms Summary" feature on meso.cssl.ca catalogs all weather stations that experience severe weather, along with the weather alerts, hail swaths (MESH), and lightning for that day. #skstorm #mbstorm
Try it out for yourself! Details on how to access the pro version of the Mesonet Portal can be found here: uwo.ca/nmp/news/2026/update_…
Connell Miller retweeted
WeatherBrains 1063: Hodgepodge City covered Canadian tornadoes with David Sills and Connell Miller. Topics included the Northern Tornadoes Project, Northern Mesonet Project, Canadian tornado alley, hail research, tornado culture, & more.
Watch or listen: weatherbrains.com/?p=11597
Connell Miller retweeted
Go north with us Monday on WeatherBrains.
Live at 8pm ET/7pm CT, we’ll talk Canadian tornado research, field surveys, storm engineering, and new observation networks.
Watch: youtube.com/weatherbrains
Send us your questions for the show. #podcast #weather
Canadian Mesonet Portal Update! ⚡
The new Severe Storm Summaries feature automatically compiles a 24-hour overview of severe weather across Canada by combining multiple datasets (lightning, weather stations, alerts, radar-indicated severe weather signatures) into a single map!
Also new:
📱 Installable iOS/Android web app
🎨 UI redesign & improved filtering
⚠️ Better polygon rendering & hazard filtering
⚙️ Unified settings panel
Details here:
uwo.ca/nmp/news/2026/update_…
Check out the Canadian Mesonet Portal at: meso.cssl.ca
