Lake Superior, 2025Marine Thunderstorm Wind in Lake Superior, August 9, 2025
August 9, 2025 · NWS APX · 1 event in 1 county or zone
Very hot weather continued. Upstream convection tracked into the region in the evening, decaying quickly with eastward extent, but did result in some gusty winds at the northwest Lower MI lakeshore and across parts of the EUP.
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
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- Heat and drought
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
Very hot weather continued. Upstream convection tracked into the region in the evening, decaying quickly with eastward extent, but did result in some gusty winds at the northwest Lower MI lakeshore and across parts of the EUP.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Gaylord, MI wrote its last area forecast discussion before the first event at Aug 9, 1:26 PM EST, 5 hours 23 minutes earlier.
Area forecast discussion, Aug 9, 1:26 PM EST, 5 hours 23 minutes before
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</html>Hazardous weather outlook, Aug 9, 1:31 PM EST, 5 hours 18 minutes before
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Local storm report, Aug 9, 5:52 PM EST, 57 minutes before
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</html>Local storm report, Aug 9, 6:03 PM EST, 46 minutes before
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</html>Local storm report, Aug 9, 6:12 PM EST, 37 minutes before
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</html>Special weather statement, Aug 9, 6:12 PM EST, 37 minutes before
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</html>Special weather statement, Aug 9, 6:18 PM EST, 31 minutes before
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</html>Local storm report, Aug 9, 6:30 PM EST, 19 minutes before
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</html>Marine Thunderstorm Wind, St Marys River From Point Iroquois to E Potagannissing Bay
- When
- August 9, 6:49 PM EST
- Where
- St Marys River From Point Iroquois to E Potagannissing Bay forecast zone, 6.99 mi ESE of Brimley
- Measured
- 35 kt (40 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 46.370, -84.430
Gust to 40mph at MDOT site near Dafter, MI.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Heat in Arizona, August 9 to 13, 202514 deaths · 7 events
- Flash Flooding and Flooding in Wisconsin, August 9 to 13, 20252 deaths · 2 injured · $172 million · 17 events
- Flash Flood and Damaging Winds in Nebraska, August 9, 20251 death · 8 injured · $29 million · 96 kt wind · 13 events
- High Surf in Hawaii, August 9 to 11, 20251 death · $530,000 · 4 events
- Damaging Winds in Nebraska, August 9 to 10, 2025$58 million · 78 kt wind · 12 events
- Hail and Damaging Winds in Nebraska, August 9, 2025$6.0 million · 1 in hail · 11 events
- Tornado and Hail in Wisconsin, August 9, 2025$556,000 · EF0 · 18 events
- Tornadoes and Damaging Winds in Missouri, August 9, 2025$195,000 · EF1 · 6 events
- Hail and Damaging Wind in Colorado, August 9, 20254 in hail · 51 events
- Damaging Winds and Lightning Strike in Iowa, August 9, 2025$18,000 · 61 kt wind · 16 events
- Damaging Winds in Wisconsin, August 9, 2025$25,000 · 60 kt wind · 2 events
- Excessive Heat in California, August 9 to 11, 202520 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 2026-09-24. Each event’s entry at NCEI: 1297451.