Storm Records: St. Lawrence River
Every storm the National Weather Service has filed in St. Lawrence River: its floods, heat, cold, winter storms, hail, wind, lightning and tornadoes, year by year and county by county, each episode with its narrative.
The worst in St. Lawrence River on the map
The deadliest and costliest episodes on record here, colored by kind of event.
- 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
- 29
- Deaths
- 0
- Injuries
- 0
- Damage
- $17,000
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
Every year
Tap a year for every episode in it.
Deaths each year
By kind of event
| Kind of event | Events | Deaths | Injuries | Damage |
|---|---|---|---|---|
| Marine Thunderstorm Wind | 24 | 0 | 0 | $17,000 |
| Marine Hail | 5 | 0 | 0 |
The deadliest
- Marine Thunderstorm Wind in St. Lawrence River, June 23, 2002
- Marine Thunderstorm Wind in St. Lawrence River, August 7, 2021A west to east oriented line of thunderstorms evolved north of ON-401 through the afternoon hours on August 7. This line eventually evolved into a bit of a bowing segment as it took on a more northeast to southwest orientation during the evening hours while crossing the St.
- Marine Thunderstorm Winds in St. Lawrence River, June 13, 2024Late evening thunderstorms caused by a pre-frontal trough tracked southeast out of Canada and across the north country on June 13th. A few of these storms were severe as they tracked into the forecast area.
The costliest
Marine zones
The places filed most often, as the offices named them.
| Marine zone | Events | Deaths | Injuries | Damage |
|---|---|---|---|---|
| St Lawrence River Above Ogdensburg Ny zone | 15 | 0 | 0 | $2,000 |
| St Lawrence River From Ogdensburg to St Regis Ny zone | 7 | 0 | 0 | |
| St Lawrence R Above Ogdensburg Ny marine | 4 | 0 | 0 | |
| St Lawrence R From Ogdensburg to St Regis Ny marine | 3 | 0 | 0 | $15,000 |
Every year
More
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.