Northerly winds of 20 to 25 mph on Lake Havasu led to waves of one to three feet, which contributed to the drowning of one person.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS VEF wrote it up.
Northerly winds of 20 to 25 mph on Lake Havasu led to waves of one to three feet, which contributed to the drowning of one person.
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 Las Vegas, NV wrote its last area forecast discussion before the first event at Dec 1, 1:40 PM MST, 30 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Las Vegas NV 1240 PM PST Mon Dec 1 2025 .KEY MESSAGES... * Northwest flow aloft will continue to bring periods of north winds and cooler temperatures to the region through the week. && .DISCUSSION...through the weekend. Ensemble guidance has us under a northwesterly flow pattern for the first week of December. This keeps the region dry with precipitation chances below 10% everywhere except far northeastern portions of Lincoln County. Temperatures fluctuate within a few degrees of seasonable values, warming slightly over the weekend. First freezes are likely (70%) Tuesday morning in eastern Inyo, northeastern Clark, and central Mohave counties where Freeze Warnings are in effect. As systems pass by, periods of increased northerly breezes can be expected. Gusty conditions continue in the lower Colorado River Valley today with gusts generally 25-40 mph. Another round of gusty conditions is forecast Wednesday and Thursday as a secondary system moves through midweek. Widespread gusts of 20-40 mph are anticipated. && .AVIATION...For Harry Reid...For the 18Z Forecast Package...Northeast breezes continue through the daylight hours today, with speeds generally 6-10 knots and some occasional gusts of 15-18 knots. Winds diminish this evening as they return to a southwest direction. Light winds remain light tomorrow as chances for 10+ knots are under 10%. Mostly clear skies with few to scattered high clouds. For the rest of southern Nevada, northwest Arizona and southeast California...For the 18Z Forecast Package...Northerly to northeasterly breezes across the region today. Strongest winds will be in the lower Colorado River Valley where gusts of 25-35 knots are likely (70%). Winds weaken this evening. Mostly clear skies with few to scattered high clouds. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION/AVIATION...Woods For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
A woman fell off a houseboat while the captain was attempting to re-anchor due to windy conditions. She drowned despite rescue efforts.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Strong Wind, Lake Havasu and Fort Mohave | 2025-12-01 | 35 | Female | Boating | Indirect |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2025Every state in 2025This day in weather historyWarnings in Arizona, December 2025
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: 1296789.