November 2024 Northeast Pacific bomb cyclone
Picture of a bomb cyclone off the Pacific Northwest coast on the afternoon of November 19, 2024 | |
| Meteorological history | |
|---|---|
| Formed | c. November 18, 2024 |
| Extratropical cyclone | |
| Highest gusts | 101 miles per hour (163 km/h) |
| Lowest pressure | 942 hPa (mbar); 27.82 inHg |
| Maximum rainfall | 22.57 in |
| Overall effects | |
| Fatalities | ≥4 |
| Areas affected | British Columbia, Washington, Oregon, California |
| Power outages | ≥953,000 |
Part of the 2024–25 North American winter | |
A powerful extratropical cyclone developed c. November 18, 2024, in the Northeast Pacific and struck the Western United States and Western Canada. The storm underwent bombogenesis, rapidly dropping its central pressure to a record-tying level of 942 millibars (27.8 inHg). This storm was the first of two storm systems to impact the U.S. West Coast during a 3 day period. The storm was associated with an atmospheric river that dropped large amounts of rain in Oregon and California. The Weather Prediction Center (WPC) issued a rare high risk of excessive rainfall in parts of Northern California, warning of "life-threatening flooding".