Lake Superior, 2023Marine Thunderstorm Winds in Lake Superior, August 25, 2023
August 25, 2023 · NWS MQT · 4 events in 3 counties and zones
A line of strong thunderstorms moved across Lake Superior during the afternoon of the 25th.
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 4
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.
A line of strong thunderstorms moved across Lake Superior during the afternoon of the 25th.
Marine Thunderstorm Wind, Saxon Harbor Wi to Upper Entrance of Portage Canal Mi 5nm Offshore to Us/Canadian Border Inc Isle Royal Np
- When
- August 25, 11:33 AM EST to 11:38 AM EST
- Where
- Saxon Harbor Wi to Upper Entrance of Portage Canal Mi 5nm Offshore to Us/Canadian Border Inc Isle Royal Np forecast zone, 13.42 mi SW of Passage Island Light
- Measured
- 35 kt (40 mph) measured gust
- Reported by
- RAWS
- Coordinates
- 48.110, -88.610
The Ojibway RAWS site measured a peak thunderstorm wind gust of 40 mph.
Marine Thunderstorm Wind, Munising to Grand Marais Mi
- When
- August 25, 3:10 PM EST to 3:40 PM EST
- Where
- Munising to Grand Marais Mi forecast zone, 0.11 mi WSW of Grand Marais Light
- Measured
- 41 kt (47 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 46.680, -85.972
The Grand Marais GLOS site measured thunderstorm wind gusts of 47 mph.
Marine Thunderstorm Wind, Grand Marais to Whitefish Point Mi
- When
- August 25, 3:10 PM EST to 3:40 PM EST
- Where
- Grand Marais to Whitefish Point Mi forecast zone, 0.09 mi WSW of Grand Marais Light
- Measured
- 41 kt (47 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 46.680, -85.972
The Grand Marais GLOS site measured thunderstorm wind gusts of 47 mph.
Marine Thunderstorm Wind, Munising to Grand Marais Mi
- When
- August 25, 3:15 PM EST to 3:20 PM EST
- Where
- Munising to Grand Marais Mi forecast zone, 1.18 mi SW of Miners Castle Point
- Measured
- 35 kt (40 mph) measured gust
- Reported by
- Public
- Coordinates
- 46.540, -86.490
There was a delayed report from a kayak tour guide reporting gusty thunderstorm winds which led to four-foot waves near Rainbow Cave.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Excessive Heat in Arizona, August 25 to 30, 202335 deaths · 28 events
- Excessive Heat and Heat in Arizona, August 25 to 30, 202311 deaths · 8 events
- Hail and Damaging Winds in Kentucky, August 25, 20231 death · $15,000 · 50 kt wind · 16 events
- Flash Flood in Utah, August 25, 20231 death · 1 event
- Hail and Damaging Winds in Nebraska, August 25, 2023$5.1 million · 1 in hail · 4 events
- Damaging Winds and Lightning Strike in Kentucky, August 25, 20232 injured · 72 kt wind · 21 events
- Damaging Winds in Georgia, August 25, 2023$50,000 · 65 kt wind · 2 events
- Flooding and Damaging Winds in Indiana, August 25 to 26, 2023$27,000 · 55 kt wind · 7 events
- Flash Flooding and Damaging Winds in West Virginia, August 25 to 26, 2023$17,000 · 50 kt wind · 16 events
- Damaging Winds in Illinois, August 25 to 26, 202361 kt wind · 20 events
- Heat in Tennessee, August 25, 202312 events
- Excessive Heat in Kentucky, August 25, 202311 events
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 2026-10-01. Each event’s entry at NCEI: 1131475, 1131473, 1131474, 1131478.