Bomb cyclone to hit US: High winds, flooding, and snow expected

A Bomb Cyclone storm is rapidly developing off the US northwest coast, threatening daily life across several Pacific Ocean states. The storm is expected to bring intense winds, heavy rainfall, and significant snowfall from California to the Pacific Northwest, affecting over seven million residents.

Bomb cyclones are characterized by rapid drops in air pressure—24 millibars within 24 hours. The current system is forecast to drop up to 70 millibars, potentially reaching 942 millibars. These storms are known for their explosive power and bring hazardous conditions like heavy snow, rain, and high winds, leading to flash flooding, mudslides, rock slides, and blizzards at higher elevations.

The storm began impacting the region on Tuesday and is expected to intensify throughout the week. Wind gusts of up to 65 mph (104 km/h) and snowfall rates of 2 to 3 inches per hour are anticipated, particularly in the Pacific Northwest mountains. Cities like Seattle have reported strong gusts, and snow accumulation could reach 20 inches in some areas. This severe weather will make travel difficult, with a possibility of whiteout conditions and power outages due to fallen trees and high surf along the coastline.

According to the National Oceanic and Atmospheric Administration (NOAA), northern California and southwest Oregon will experience heavy rainfall, potentially causing river and flash flooding. The storm’s effects could cause significant disruptions, including hazardous travel, power outages, and tree damage.

Meteorologists warned the storm will develop rapidly, with the air pressure dropping significantly within 24 hours. By Wednesday, conditions are expected to worsen, with the pressure forecast to fall below 950 millibars, signalling an intensifying storm. Residents in flood-prone areas are urged to remain vigilant and prepare for possible evacuations.

This bomb cyclone isn’t isolated—similar storms have impacted North America recently. However, the combination of an atmospheric river with a bomb cyclone is expected to create more significant impacts. The storm will bring heavy rain and snow, and coastal areas are bracing for extreme conditions lasting through Thursday.

As the storm intensifies, blizzard warnings are issued, and experts recommend avoiding travel, particularly in the Washington Cascades. The University of California's storm impact scale rates this system at Category 4 ("extreme") severity, with potentially catastrophic effects from wind, rain, and snow.  

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