Summer 2025 Weather Recap & Outlook: Europe, USA & Canada
Overview of June’s Severe Weather 2025
The first half of June 2025 saw Europe and North America rocked by dramatic weather events: violent tornado outbreaks, intense hailstorms, flash floods, record-breaking heat, and wildfires. Atmospheric dynamics were driven by persistent heat domes, strong cold fronts, and favorable jet stream patterns that fueled convective storms—a trend confirmed by ECMWF, Severe Weather Europe, NOAA, and national weather services.
Europe 2025 (June 1–15)
🌪 Tornado Outbreaks
June 1, France: A powerful IF2 tornado struck Saint‑Bonnet‑le‑Courreau (Loire region), uprooting trees and damaging roofs.
June 4, Germany/Slovakia/Belgium/UK/Lithuania: Multiple confirmed tornadoes—Ulm (IF2), Slovakia and Belgium (IF1), Pulborough, UK (IF1).
June 9, Russia (Yaroslavl region): IF1 tornado impacted rural terrain.
⛈️ Supercell Hail & Storms
June 3–4: A severe outbreak with large hail, flash floods, and tornado threats across Central Europe.
June 13–14: Massive hailstorm over France (Bourgogne/Auvergne), with hailstones up to 8.5 cm in Olby.
🌡 Heatwave
Early June: Temperatures soared to +39 °C in Tuscany (Florence) and +9–10 °C above normal in Central Europe due to a heat dome theguardian.com.
United States 2025
🌪 Tornadoes
June 3, Midwest: Four tornadoes (two EF1, two EF0) across Missouri, Kentucky, Indiana reinsurancene.
June 4, St. Louis, MO: EF1 tornado near Chesterfield – downed trees and structural damage en.
June 6, NM/TX: A supercell spawned 19 tornadoes, uprooting homes and producing large hail.
June 9, PA (Erie County): EF2 tornado with winds ~115 mph — no injuries.
June 11, TX/WY: Brief EF0–EFU tornadoes in McLennan County, TX, and Albany County, WY.
June 12, Wimberley & Wharton County, TX: At least four tornadoes (two in Wimberley at 1:20 a.m., two in Wharton — EF1/EF0) causing fatalities and property damage mysanantonio.com.
⛈ Storms & Flooding
June 10: A widespread severe thunderstorm outbreak from Plains to East Coast (NYC, Boston); heavy rainfall, flash flooding, hail.
June 13: Adeliberate thunderstorms and tornado warnings in Colorado front range.
Canada
🔥 Wildfires & Smoke
Early June: ~200 active wildfires burning ~7,700 sq mi across Prairie provinces (Manitoba, Saskatchewan, Alberta, B.C.); states of emergency declared; smoke degraded US air quality .
⛈ Storm Alerts 2025
June 14: Environment Canada issue warnings in Saskatchewan—hail, strong winds, flash floods, possible tornadoes .
Synoptic patterns: Strong heat domes over Europe and North America allowed moisture and heat to fuel severe convection.
Jet stream positioning: Provided shear and lifting zones conducive to supercells and tornadoes.
Common triggers: Heat + moisture + frontal boundaries = tornadoes, hail, floods.
Wildfires: Early onset due to prolonged dryness and heat, particularly in Canada.
Implications & Forecast Through Mid-Summer
Europe: Expect continued heat and drought under high-pressure blocks, with intermittent convective outbreaks.
USA/Canada: Tornado season remains active through June; wildfire and drought risk elevated in West; moisture-driven thunderstorms likely in Plains.
Tropical Storm Dalila Sparks Fears of an Explosive Hurricane Season Start
