Categoria:

Pineapple Express set to slam California with firehose of flooding rain, heavy snow, fierce winds

Autor: Chris Oberholtz

Firehose blasting West with rain, snow and wind

After a relatively calm week and a half, weather across the western region intensifies as a potent storm system spins off the coast, set to bring in a powerful Pineapple Express atmospheric river.

SAN FRANCISCO – After a relatively calm week, the weather across the Pacific Coast is roaring back to life as a potent storm system spins off the coast, set to bring in a powerful Pineapple Express atmospheric river

The storm is threatening a myriad of impacts, including flash flooding, damaging winds, power outages and possible landslides. 

A Pineapple Express is a weather pattern that brings a lot of moisture from the tropical Pacific near Hawaii and hits the West Coast hard. This weather pattern can carry up to 27 times more water than the Mississippi River, and usually features several inches of rain.

WHAT IS A PINEAPPLE EXPRESS?

All aboard the Pineapple Express this week in California as some coastal ranges could see over 8 inches of rain before the end of the week, while Los Angeles and San Diego could be in for more monumental flooding.

All aboard the Pineapple Express this week in California as some coastal ranges could see over 8 inches of rain before the end of the week, while Los Angeles and San Diego could be in for more monumental flooding.

(FOX Weather)

Currently, rain is underway across the Pacific Northwest, but the worst of the storm’s impacts are still to come as the storm moves south into California Wednesday, the FOX Forecast Center said. 

SEE SOME OF THE MOST CATASTROPHIC ATMOSPHERIC RIVERS AND FLOODING IN CALIFORNIA HISTORY

A three-hour radar loop showing where showers and thunderstorms are ongoing. Severe Thunderstorm Warnings are indicated in yellow. Tornado Warnings are indicated in red, while Tornado Warnings with a confirmed tornado are indicated in purple. Flash Flood Warnings are indicated in green, while Flash Flood Emergencies are indicated in pink.
(FOX Weather)

Heavy rains spread across California Wednesday into Thursday

The main area of heavy rain will move onshore during the day Wednesday, accompanied by strong winds.

“The Pacific Northwest has gotten the brunt of the wet weather over the last couple of days,” FOX Weather Meteorologist Jane Minar said. “Now, that finally shifts down the coast. So not only are we talking rain though, but we also have wind alerts that are up for the West Coast, especially for the mountains.”

Strong winds may reach 60-70 mph along the southern Oregon and northern California coasts, with higher gusts in the mountains. Gusts could also reach 50-55 mph along the coastal areas of the San Francisco Bay area, with widespread gusts of 45-50 mph likely across a wide portion of Northern California. 

High Wind Warnings have been issued there as a result. These winds can potentially down trees, leading to power outages. They will also lead to numerous delays at San Francisco International Airport.

HOW TO WATCH FOX WEATHER

West Wind Alerts

Current wind alerts along the West Coast on Jan. 31, 2024.

(FOX Weather)

Flood Watches cover much of coastal Northern and Central California, including the San Francisco Bay Area, through Friday morning as the heavy rain is expected to lead to flooded streets and small streams. Larger rivers may overtop their banks, leading to minor flooding as well. 

The progressive nature of the rain, which will move south relatively quickly, will be a limiting factor to a more significant flood risk with this storm, the FOX Forecast Center said.

WOMAN SURVIVES ON HER OVERTURNED CAR FOR 15 HOURS IN CALIFORNIA FLOOD

  • Flood Watches in effect through Friday, Feb. 2, 2024. (FOX Weather)

  • Flood Watches in effect through Friday, Feb. 2, 2024.

    Flood Watches in effect through Friday, Feb. 2, 2024. (FOX Weather)

Rainfall amounts in Northern California are expected to reach 2-3 inches, including the San Francisco Bay Area. The coastal ranges may see as much as 4-6 inches of rain. 

Feet of snow forecast for the Sierra Nevada

Heavy snow will begin Wednesday in the Sierra. Travel will be difficult and impossible because of snow-covered roads and reduced visibility at times, with possible chain controls and road closures. 

Forecast snow totals for the West through Friday, Feb. 2, 2024

Forecast snow totals for the California’s mountain passes through Saturday, Feb. 3, 2024.

Snow may fall up to 2 inches per hour. Up to 4 feet of snow will fall at the highest elevations, and snow could accumulate down to 3,500 feet, the FOX Forecast Center said. This will help a meager snowpack which sits at just 50% of the average, but it won’t fully erase the snow deficit. 

West Snow Forecast

Forecast snow totals for the West through Sunday, Feb. 4, 2024.

Snow will also be a factor in the mountains of southern California. The cold nature of the system will allow snow levels to drop below 4,000 feet, the FOX Forecast Center adds. Those traveling along I-5 through the Grapevine region will need to take it slowly as snow levels will drop below 4,000 feet.

At the coast, large powerful waves are expected to batter the coast from Oregon down through Southern California. High Surf Advisories are in effect for large waves, which could tear up popular beaches.

The National Weather Service (NWS) said surf heights for the Southern Oregon Coast through the San Francisco Coast will range from 22-26 feet. Los Angeles beaches are forecast to have 8-12 feet surf, and San Diego beaches will have 10 feet surf.

Pineapple Express moves into Los Angeles area on Thursday

The storm is forecast to move into Southern California and the Los Angeles areas on Thursday, likely leading to slowdowns during the morning commute. 

The lowlands are expected to receive 1-2 inches of rain, while the mountains and surrounding hills may see 2-5 inches. The rain is expected to cause flooding, leading to road closures and debris on mountain and canyon roads. 

Pacific Storm Satellite

GOES-18 satellite image of the massive storm heading into the West Coast taken the afternoon of Jan. 30, 2024.

(NOAA / CIRA / RAAM-B / NOAA)

Especially vulnerable will be those across the San Diego metro area, which was recently impacted by the damaging flooding last Monday. Thankfully, this storm is not expected to bring quite as much rain as that one, the FOX Forecast Center said.

The NWS has warned of an increased risk of landslides in Western Washington due to heavy rainfall. Two landslides have already occurred – one in Seattle and the other in the Olympic Mountain foothills.

LANDSLIDE THREAT HALTS TRAIN SERVICE BETWEEN LOS ANGELES AND SAN DIEGO

West Rain Forecast

Forecast rain and snow totals for the West through Friday, Feb. 2, 2024.

(FOX Weather)

The main storm system will move overhead by late Thursday. As a result, the widespread rain will be replaced with scattered showers and even a few thunderstorms, which will linger through Friday.

Second storm for Southern California has potential for greater flooding impacts

However, the stormy pattern won’t end there. Another possibly more impactful storm is forecast to slam into Southern California starting Sunday. 

CALIFORNIA’S ‘ARKSTORM’: HISTORIC 1000-YEAR FLOODS OF 1861-62 FEATURED 8 WEEKS OF ATMOSPHERIC RIVERS

“(This storm) has a growing potential for damaging flooding and is the one of most concern (this week),” the NWS in Los Angeles wrote. 

The FOX Forecast Center said initial forecasts show this slow-moving storm has the potential to bring several days of heavy rains to the region.  More widespread flooding and even heavier mountain snow are becoming increasingly likely.

Deja una respuesta

Tu dirección de correo electrónico no será publicada. Los campos obligatorios están marcados con *

Te puede interesar también

¿Quieres hablar con nosotros en cabina?

Nuestros Horarios en el Estudio:

9am a 11am | 12m a 1pm | 4 a 5 pm | 5 a 6pm

horario del pacifico