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What Does Atmospheric River Mean? How the ‘Pineapple Express’ Impacts the West Coast

Throughout the year, a weather system known as an “atmospheric river” can impact the West Coast of the U.S., causing flooding, heavy snow and possible mudslides.

The National Oceanic and Atmospheric Administration defines an atmospheric river as a huge plume of subtropical moisture that moves with the weather, carrying water roughly equivalent to the average flow at the mouth of the Mississippi River.

“Atmospheric rivers are relatively long, narrow regions in the atmosphere – like rivers in the sky – that transport most of the water vapor outside of the tropics,” the NOAA states.

UCSD Scientists Will Ride Research Aircraft into Huge Storms to Study Atmospheric Rivers

UC San Diego will send airborne scientists into huge offshore storms to deepen their understanding of ”atmospheric rivers,” the plumes of moisture that can bring nourishing rains, and flooding, to the West Coast.

The second of up to 12 winter weather reconnaissance flights is scheduled to take off from Travis Air Force Base near Sacramento on Tuesday, carrying researchers from NOAA and the Air Force. UCSD will add its own researchers to the trips in about a week.

The university is partnering with the government and military on the project, which is being run out of the UCSD’s Scripps Institution of Oceanography.

Gov. Tim Walz Proposes Borrowing $300M For Water Projects

As a way to promote his “Local Jobs and Projects Plan,” Governor Walz took a tour today, 80 feet below ground. Pushing for more funding for water quality, Walz walked through a storm tunnel in Minneapolis that was damaged by flooding in 2010.

Gov. Tim Walz unveiled the second of a proposed four packages for his Local Jobs and Projects Plan, and this part says Minnesota should borrow $300 million to replace aging infrastructure and upgrade treatment facilities to protect its water supplies.

Black And Brown Muck: Can Overwhelmed S.F. Sewers Ever Stop Flooding?

After a weekend storm walloped San Francisco, officials say preventing flood damage from powerful rains in vulnerable areas of the city largely remains a pipe dream.

A storm that inundated San Francisco with more than an inch of rain in a single hour Saturday flooded two Muni light-rail stations, snarled traffic on Highway 101 and forced residents in parts of West Portal to wade through waist-deep water that surged into homes, causing thousands of dollars of damage.

U.S. Announces $30 Million To Bolster Coasts From Flooding, Rising Seas

The U.S. government’s oceans and waterways agency will provide $30 million to improve coastal resilience, officials said, aiming to reduce the impacts of worsening storms, flooding and rising seas in nearly half of U.S. states.

Grants through the program are designed to restore or expand coastal wetlands, dunes, reefs, mangroves and barrier islands that are key to coastal protection, said the National Oceanic and Atmospheric Administration (NOAA) in an announcement.

Coastlines worldwide are being damaged or threatened by more extreme and destructive weather, higher temperatures and rising seas that scientists attribute to the accumulation of greenhouse gases in the atmosphere.

Winter Floods Are Coming: Here’s How to ‘Be Flood Ready’

SACRAMENTO — The California Department of Water Resources is encouraging Californians to prepare for a wide variety of potential flooding in the coming months, as the winter storm season quickly approaches.

More than seven million Californians in rural communities, urban areas and along the coast are at risk of flooding. Flooding can occur throughout the state and Californians need to be aware and understand the potential risks of flooding in their communities, the department said in a recent press release.

Storms To Raise Risk Of Isolated flooding Over Interior West As North American Monsoon Continues

Portions of the interior western United States will be at risk for localized flash flooding and isolated severe thunderstorms this week. Just about every state west of the Great Plains and east of the Pacific coast will be at risk for thunderstorms in the pattern. However, some of the most dangerous storms may target the desert areas. As July ends and August begins, a surge of humid air from Mexico is forecast to bring a significant uptick in the amount of shower and thunderstorm activity over the deserts and mountains. The weather pattern is no stranger to the region during the summer and is considered to be routine during the North American monsoon season that extends from June to September.

High-Time Flooding Poses Big Problem for US, Federal Scientists Warn

The nation’s coasts were hit with increased tidal flooding over the past year, part of a costly and perilous trend that will only worsen as sea levels continue to rise, federal scientists warned Wednesday.

Flooding Spikes Along U.S. Coasts as Sea Levels Rise: NOAA Report

High tides are flooding basements, streets and septic systems up and down U.S. coastlines more often as sea levels rise—and the future looks even more soggy, the National Oceanic and Atmospheric Administration said July 10.

Coastal Flooding Likely With Weekend’s High Tides; Cities Prep With Sandbags

Coastal flooding and beach erosion are possible through Monday during the annual ocean phenomenon known as king tides. Waves carrying sand and rocks are likely to wash over The Strand in Oceanside, the parking lots at Tamarack Avenue beach in Carlsbad and Cardiff State Beach in Encinitas, and other low spots along the coast. Parts of Highway 101 have been closed temporarily to clean up debris and repair damage left by the seasonal tides and waves in recent years.