Marine Hail in St. Lawrence River
Every marine hail event the National Weather Service has filed in St. Lawrence River, year by year, with the most significant episodes. Hail three-quarters of an inch or larger over water.
The most significant on the map
The most significant marine hail episodes in St. Lawrence River.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 5
- Deaths
- 0
- Injuries
- 0
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Marine Hail in St. Lawrence River, July 17, 2003
- Marine Hail in St. Lawrence River, June 26, 2004
- Marine Hail in St. Lawrence River, July 29, 2006
- Marine Hail in St. Lawrence River, August 15, 2018Thunderstorms developed as expected north of Lake Ontario across southern Ontario province. Storms just on the north side of the St. Lawrence River began to strengthen during the afternoon.
More
Marine Hail everywhereEvery kind of event in St. Lawrence River
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.