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Northern Hail Project @westernunhp.bsky.social · 19/07/2026

**Storm Report: Just after 1 PM today, a storm affecting northern portions of London ON produced large hail, w/ one oddly shaped specimen reaching 51 mm in maximum diameter. A quick inspection of these areas, however, revealed only minor tree damage (leaf shredding) and damage to local gardens. 1/2

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Northern Hail Project @westernunhp.bsky.social · 15/07/2026

**Important Announcement** This Thursday, July 16th, the Northern Hail Project (NHP), along with members of the City of Calgary led Hail Resilience Improvement Network (HRIN), will be running a special series of exhibits and demonstrations on all things #hail at the TELUS Spark Science Centre! 1/3

Three photo banner showing (left) gloved hands holding several real hailstones collected by the NHP field team, (center) two storm pursuit vehicles - white and green Ford Explorers, both with Canadian Severe Storms Laboratory Northern Hail Project decals - with Field Coordinator and intern standing in between the vehicles, (right) NHP intern explaining hail science to a young family.

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Northern Hail Project @westernunhp.bsky.social · 16/06/2026

NHP Field Operations - Mission Today - July 16, 2026 NHP Field Teams have deployed to areas E of Calgary today (June 16) in anticipation of the potential for damaging, wind-driven hail. #abstorm If it is safe to do so, please send us any damage/hail reports you may encounter from today's storms!

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Northern Hail Project @westernunhp.bsky.social · 16/06/2026

**First Update** Ongoing Hail and Extreme Rainfall Damage Surveys for June 6-9 Outbreak Sequence MB and SK Our survey teams have been busy documenting hail and extreme rainfall impacts from last week's storms. Detailed press release can be found here: www.facebook.com/share/p/1JZY... 1/2

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Northern Hail Project @westernunhp.bsky.social · 11/06/2026

Please forward us any reports you may have of hail and flash flooding damage, including and especially if you have saved samples of large hail in your home freezers! For collection, reporting and storage advice, please see the attached infographic. (3/3) @westernuntp.bsky.social @cssl.ca

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Northern Hail Project @westernunhp.bsky.social · 11/06/2026

**Survey Announcement** #MBstorm #SKStorm Several CSSL survey teams are currently conducting assessments of wind, hail, and flash flood impacts from the multi-day series of storms that have affected large swaths of Manitoba and Saskatchewan June 6th through June 9th (1/3)

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Northern Hail Project @westernunhp.bsky.social · 07/06/2026

**Severe Weather Outbreak Expected Today** #skstorm #mbstorm During today's events, if it is safe to do so, we are very interested in getting your hail reports. The attached infographics provide guidance on how to report and store hail. Stay safe out there today everyone!

Guide to reporting hail - when it is safe - take an overhead photo with a reference object (e.g., coins); do not hold hail in hands, it will melt even more quickly! Use a ruler, golf ball, baseball, etc., for reference a object if coins are not available; weigh the hail on a kitchen scale; provide information on where and when the hail occurred.

Guide to collecting and preserving hail - collect and carry hail when it is safe do do so - preferably with insulating gloves such as oven mitts to prevent melting; measure the longest axis and, if there's time, middle and shortest axes as well; weigh the hail on a kitchen scale if there's time; to store hail, place it in plastic freezer bags with as much air removed as possible, and store in a freezer kept at -10C or colder.

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Northern Hail Project @westernunhp.bsky.social · 16/04/2026

**Important Announcement!** Today, we congratulate NHP graduate student Julia Finlayson on the successful defense of her master's thesis, entitled "Development of a Low-Cost, Novel Piezoresistive Polymer Hail Sensor" under the supervision of Drs. Gregory Kopp and Julian Brimelow. 1/2

Julia standing proudly in front of opening slide of her master's thesis defense presentation with supervisors Dr. Greg Kopp and Dr. Julian Brimelow.

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Northern Hail Project @westernunhp.bsky.social · 11/03/2026

Seeking Hail & Damage Reports #ONstorm: At around 1 am, a hailstorm tracked NE of Mount Forest (see MRMS MESH below), with reports of hail over 40 mm in diameter and some vehicle damage (cracked windshield). Investigation is ongoing. Please forward any information you may have on this event! 1/2

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Northern Hail Project @westernunhp.bsky.social · 23/01/2026

*CSSL Summer Internship - Applications Closing Soon* For those still interested in applying to the CSSL summer internship program, you still have until Monday, January 26, to get your applications in! Details and application forms located here: www.uwo.ca/cssl/interns...

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Northern Hail Project @westernunhp.bsky.social · 02/12/2025

*Important announcement!* CSSL Summer Internship Program applications are now live! Spend the summer chasing hailstorms, documenting tornado impacts, and contributing to world-class storms research. Details and applications located here: uwo.ca/cssl/interns... Applications close January 26th.

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Northern Hail Project @westernunhp.bsky.social · 29/07/2025

**Damage Survey Announcement #abstorm: Yesterday (July 27) a major hailstorm tracked from W of Twin Butte, through Cardston, E to the Shanks Lake area. An NHP damage survey team will begin data collection tomorrow. Please forward us any information you may have on this event!

Image of map showing radar estimated extent of hailstorm swath through southern Alberta, beginning west of Twin Butte and tracking east-southeast through Cardston and areas to the south, continuing further east-southeast over and past Shanks Lake. Large areas with estimates over 50 mm max diameter, with several areas west of and over Shanks Lake with estimate maximum diameters of 75 mm.

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Northern Hail Project @westernunhp.bsky.social · 14/07/2025

**Seeking Hail Reports: Calgary was affected by a potentially damaging hailstorm this evening (July 13) between 7:45 & 8:15 PM MT, tracking SE from the NW corner of the city to S of Chestermere. Please send us your hail and hail damage reports, and if you can, save some samples! #abstorm #Calgary

Infographic indicating steps to collect scientifically accurate hail data: 1) take a photo of the hail with a reference object of known size; 2) Bag the hail in a plastic, sealable bag, removing as much air as possible; 3) Label the bag with critical information (date/time of collection, location of collection site).

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Northern Hail Project @westernunhp.bsky.social · 10/07/2025

**Survey Announcement: The CSSL’s Winnipeg team is conducting a damage survey of hail impacts in the Reston area following a major storm on the evening of July 3rd with radar estimated hail larger than baseballs (see MRMS MESH below). Let us know if you have any information on this storm! #MBstorm

Radar product showing heat map with estimated maximum hailstone sizes. Swath of estimate 50 mm or larger hail from north of Redvers, Saskatchewan to southwest of Hartney, Manitoba.

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Northern Hail Project @westernunhp.bsky.social · 10/07/2025

**Survey Announcement: Yesterday (July 9), NHP Field Ops intercepted a damaging thunderstorm near the communities of Acme & Carbon, AB. A damage survey of the combined impacts of wind & hail in the area will be conducted later today. Let us know if you have any information on this storm! #abstorm

A field of canola flattened by the recent hail storm, with ground between destroyed plants still covered in hailstones.

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Northern Hail Project @westernunhp.bsky.social · 13/05/2025

These platforms, Super Mobile Hail Observatories (SuMHOs), will be deployed by members of the NHP field team across the US plains during the #ICECHIP field campaign. ICECHIP endeavours to improve radar-based #hail detection, hail models and forecasting, and hail warnings. @nsficechip.bsky.social

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Northern Hail Project @westernunhp.bsky.social · 13/05/2025

The NHP has been busy preparing for field operations, both at home and abroad! For the #ICECHIP field campaign, the NHP and Western's UMS designed and built 4 platforms which collect and preserve hailstones, capture high-speed video of falling #hail, and measure hail fall speed with a small radar.

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