Stormy Pattern Set to Return to California After Dry Start to Rainy Season
It’s been a lackluster start to the rainy season in California, but there are growing signs that the storm door is about to swing wide open.
It’s been a lackluster start to the rainy season in California, but there are growing signs that the storm door is about to swing wide open.
An atmospheric river brought heavy rain, flooding and unseasonably warm temperatures to the Pacific Northwest, closing rail links, schools and roads as it shattered daily rainfall and temperature records in Washington state.
A new law expanding California’s atmospheric river research program goes into effect next year. It connects flood and reservoir control operations with new technologies and strategies that can help operators accurately predict the arrival of these storms.
California will escape much of the rainfall from an incoming atmospheric river, but the storm will still benefit some of the state’s reservoirs.
A major pattern change is set to deliver California’s first atmospheric river of the season next week. Significant rain and snow is in the forecast for the Golden State, while damp, dreary days are ahead for other parts of the West as signs of El Niño’s influence on the upcoming winter season emerge.
As we get closer to winter, the phrase “atmospheric river” is more likely to pop up in headlines.
Here’s an explanation of what these phenomena are and how they impact weather in Northern California.
San Diego County has seen its fair share of storms over the last year, bringing historic levels of rainfall to the region.
After the driest three-year period on record, California has been battered by extensive precipitation, between a series of unrelenting atmospheric rivers that hit last winter and more recently, Tropical Storm Hilary.
An atmospheric river will bring significant rain to Northern California Monday and Tuesday but entirely miss San Diego County, which is days away from wrapping up an otherwise wet year, the National Weather Service said.
But there will be a slight chill to the air along the San Diego coastline — the kind that reminds people that it’s a good idea to keep a sweater handy. And you’ll need your winter wetsuit before long.
A moisture-rich atmospheric river that’s being called the first storm of the season is forecast to deliver rain to Northern California as early as Sunday night with the chance for showers continuing into Monday and Tuesday. Eureka and areas to the north are expected to see the heaviest rainfall with totals of 1 to 3 inches, while the Bay Area is likely to receive only light showers, according to the National Weather Service.
Atmospheric rivers are essential for the transportation of precipitation occurring in the Northern and Southern Hemisphere. The rapidly changing climate is causing shifts in these long, flowing regions of the atmosphere, resulting in an increasing number of extreme weather events that bring about destruction across the world.