Four downbursts amid long track of damage in SK/MB on Aug 25
NTP investigation, including a thorough ground / drone survey, has confirmed four downbursts amid a long track of damage in SK and MB during the early morning hours of Aug 25. The downbursts, all rated EF1, had their points of worst damage located in Kelso and Welwyn, SK and St. Lazare and Foxwarren, MB. Structural and tree damage was reported from Arcola, SK northeast to Foxwarren, MB with the long-lived bow-echo type storm.
Full details are provided in the event summaries below, along with maps and survey photos. The events can be plotted on a map via the NTP Dashboard here.
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Event Name: Kelso, SK
Date: August 25, 2024
Start Time: 5:05 AM CST (1105 UTC)
Final Classification: Downburst
Final EF-Scale Rating: EF1
EF-Scale Damage Indicator / Degree of Damage: SBO/DOD-8
Location of worst damage: 50.0765N, 101.9279W
Description: Structural and tree damage was reported from Arcola, SK northeast to Foxwarren, MB after long-lived bow echo storm passed through the region. No injuries were reported. An NTP ground and drone survey team investigated damage along the storm track on August 27-28, 2024. While much of the damage was weak, several areas of more intense damage were documented by the team. North of Kelso (southwest of Moosomin), a barn was destroyed, several other nearby farm structures suffered damage and tree damage was also documented. This area of damage was assessed as EF1 downburst, with an with an estimated max. wind speed of 150 km/h. Start time is radar estimated. Satellite imagery review revealed some signs of structural damage.
Event Name: Welwyn, SK
Date: August 25, 2024
Start Time: 5:30 AM CST (1130 UTC)
Final Classification: Downburst
Final EF-Scale Rating: EF1
EF-Scale Damage Indicator / Degree of Damage: MBS/DOD-3
Location of worst damage: 50.3127N, 101.6129W
Description: Structural and tree damage was reported from Arcola, SK northeast to Foxwarren, MB after long-lived bow echo storm passed through the region. No injuries were reported. An NTP ground and drone survey team investigated damage along the storm track on August 27-28, 2024. While much of the damage was weak, several areas of more intense damage were documented by the team. In the Welwyn area, a large machine shed was destroyed, and grain bin and tree damage was also documented. This area of damage was assessed as EF1 downburst, with an with an estimated max. wind speed of 155 km/h. Start time is radar estimated. Satellite imagery review revealed some signs of structural damage.
Event Name: St. Lazare, MB
Date: August 25, 2024
Start Time: 6:40 AM CDT (1140 UTC)
Final Classification: Downburst
Final EF-Scale Rating: EF1
EF-Scale Damage Indicator / Degree of Damage: C-T/DOD-4
Location of worst damage: 50.4004N, 101.3606W
Description: Structural and tree damage was reported from Arcola, SK northeast to Foxwarren, MB after long-lived bow echo storm passed through the region. No injuries were reported. An NTP ground and drone survey team investigated damage along the storm track on August 27-28, 2024. While much of the damage was weak, several areas of more intense damage were documented by the team. Southwest of St. Lazare, an area of enhanced tree damage was discovered. This area of damage was assessed as EF1 downburst, with an with an estimated max. wind speed of 150 km/h. Start time is radar estimated. Satellite imagery review revealed visible tree damage.
Event Name: Foxwarren, MB
Date: August 25, 2024
Start Time: 6:50 AM CDT (1150 UTC)
Final Classification: Downburst
Final EF-Scale Rating: EF1
EF-Scale Damage Indicator / Degree of Damage: MBS/DOD-3
Location of worst damage: 50.5189N, 101.1545W
Description: Structural and tree damage was reported from Arcola, SK northeast to Foxwarren, MB after long-lived bow echo storm passed through the region. No injuries were reported. An NTP ground and drone survey team investigated damage along the storm track on August 27-28, 2024. While much of the damage was weak, several areas of more intense damage were documented by the team. In Foxwarren, major roof damage to a skating rink, minor roof damage to homes and tree damage was documented. This area of damage was assessed as EF1 downburst, with an with an estimated max. wind speed of 155 km/h. Start time is radar estimated. Satellite imagery review revealed some signs of structural damage.
Regional map showing the locations of the EF1 downbursts across the SK/MB border NW of Brandon, MB.
Path of damage from the bow-echo storm with the four areas of enhanced downburst damage represented by ovals. The locations of ground and drone photos are also shown.
Map showing the location and extent of the Kelso, SL EF1 downburst damage.
Map showing the location and extent of the Welwyn, SK EF1 downburst damage.
Map showing the location and extent of the St. Lazare, MB EF1 downburst damage.
Map showing the location and extent of the Foxwarren, MB EF1 downburst damage.
EF1 damage to farm buildings near Kelso, SK.
EF1 damage to farm building near Welwyn, SK.
Large areas with EF1 tree damage at St. Lazare, MB.
EF1 damage to an arena at Foxwarren, MB.
