Omega block weather pattern to bring late season snow, heavy rain and cooler temps to the West Coast

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Late outpouring snowfall to broad the Sierra Nevada Region

SPRING SNOW: FOX Weather Meteorologist Steve Bender breaks down the uncharacteristically late-season snowfall expected crossed the Sierra Nevada portion starting time and Thursday. #Westcoast #Snow #California #Nevada #Spring #FOXWeather

SIERRA NEVADA, Calif. - Millions of Americans are bracing for a assortment of upwind conditions connected the East and West coasts this week arsenic an Omega block upwind signifier begins to instrumentality shape.

An Omega artifact upwind signifier is starting to instrumentality signifier crossed the little 48 states, with a ample country of high pressure pushing the jet watercourse north.

WHAT IS AN OMEGA BLOCK?

As this occurs, 2 different areas of debased unit are expected to signifier crossed the Northeast and West Coast, allowing cooler upwind to dispersed crossed some regions.

According to the FOX Forecast Center, the occidental borderline of the Omega artifact volition statesman to make connected Wednesday and Thursday.

This graphic shows the precocious level signifier expected crossed the little 48 states. 
(FOX Weather)

As cooler aerial settles crossed the West Coast, snow volition make connected the higher terrain of the Sierra Nevada.

"One oddity with this setup is that the main travel is coming from the northbound arsenic debased unit sits implicit Nevada and the Rockies," the FOX Forecast Center said. "Typically, snowfall crossed this portion occurs erstwhile atmospheric rivers determination down the West Coast, with winds retired of the southwest pulling successful Pacific moisture."

TORRENTIAL RAIN TRIGGERS FLASH FLOODING IN WESTERN NORTH CAROLINA AREAS STILL RECOVERING FROM HURRICANE HELENE

As a effect of this processing system, a circular of rainfall and snowfall volition get during the time connected Wednesday, past dilatory taper disconnected by the adjacent morning, earlier being followed by 1 much circular of upland snowfall connected Thursday night.

This graphic shows the snowfall forecast crossed the Sierra Nevada Region done Thursday. 
(FOX Weather)

At slightest 8 to 12 inches of snow are possible, with immoderate higher elevations perchance experiencing 12 to 18 inches, according to the FOX Forecast Center.

WHAT IS AN ATMOSPHERIC RIVER?

Persistent beardown winds volition besides beryllium imaginable for overmuch of the southwest, arsenic upwind advisories are successful spot done Thursday for portions of Nevada and California.

It is worthy noting that higher elevations crossed Alpine County are besides astatine hazard of important snowfall, but the main Tahoe country should acquisition minimal impacts.

May snowstorm brings wintertime backmost to Colorado Rockies

LATE SEASON SNOW ❄️: A uncommon May snowstorm is dumping dense snowfall crossed Estes Park and the Colorado Rockies. FOX Weather’s Robert Ray is connected the ground, powering done the wintry blast arsenic outpouring takes a backseat. 

This is an uncharacteristic magnitude of snowfall for this precocious successful spring.

SUMMER-LIKE HEAT LOCKS IN OVER THE NORTHERN PLAINS, UPPER MIDWEST AFTER COLD START TO MAY

A determination specified arsenic Mammoth Lakes, California, could acquisition arsenic overmuch arsenic 3 to 5 inches of snowfall done Thursday.

The latest snowfall connected grounds for this country occurred connected June 16, 1995.

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