Tag Archive for: Weather

Deepening Drought Holds ‘Ominous’ Signs For Wildfire Threat in the West

/in , , /by /NPRby Eric Westervelt

After one of the most destructive and extreme wildfire seasons in modern history last year, a widening drought across California and much of the West has many residents bracing for the possibility this season could be worse.

Anemic winter rain and snowfall has left reservoirs and river flows down significantly, even as the state experiences its driest water year in more than four decades. Today, wildfire fuels in some parts of California are at or near record levels of dryness.

Full Story

California Senate Proposes to Spend $3.4 Billion on Drought

/in , , /by /AP Newsby Adam Beam

Mired in yet another drought that threatens drinking water, endangered species of fish and the state’s massive agriculture industry, Democrats in the California Senate on Thursday detailed a $3.4 billion proposal designed to gird the state for a new crisis on the heels of a deadly and disruptive pandemic.

The proposal would equal all of the state’s combined spending during the previous drought, which lasted from 2012 to 2016, according to the Legislative Analyst’s Office. That drought occurred after the Great Recession, when California routinely battled multibillion-dollar budget deficits and struggled to pay for state services.

Full Story

Sierra Snow Survey Canceled Due to Impacts of Dry Weather, Water Supply Also at Risk

/in , , /by /KCRA (Sacramento)by Emily Maher

There is dry dirt where water should be at Folsom Lake. A lack of wet weather is taking a toll on the state’s water supply.

Chris Orrock is a spokesperson for the California Department of Water Resources. He said while drought-like conditions are very common for the state, this year is worse than normal, especially considering back-to-back dry winters with little snow and rain.

“In fact, this year is a critically dry year,” Orrock said.

It is so dry, in fact, that DWR canceled Thursday’s snow survey at Phillips Station because there was not enough snow on the ground. Orrock said much of the lower elevation snow is already gone and some of the higher elevation snow is beginning to melt as well.

Full Story

Opinion: Water Created California and the West. Will Drought Finish Them Off?

/in , , , /by /Los Angeles Timesby Michael Hiltzik

In what may become an iconic image for drought-stricken California, Gov. Gavin Newsom stood on the parched bed of Lake Mendocino on April 21 to announce an emergency declaration for Sonoma and Mendocino counties.

Full Story
San Diego County's Climate Future-Atmospheric Rivers-Water Supply

San Diego County’s Climate Future

/in , /by

Climate change and drought will impact San Diego County’s climate future, but regional water supply planning and adaptation measures will ensure a safe, reliable supply for the region.

Water supply strategy was one of the key points participants learned about during a Monday panel discussion, “San Diego County’s Climate Future,” hosted online by the San Diego County Water Authority, Citizens Water Academy, Leaders 20/20 and San Diego Green Drinks.

Panel moderator Kelley Gage, Water Authority Director of Water Resources, kicked off the climate conversation by describing the investments and steps taken by the Water Authority and its 24 member agencies to secure the region’s water future.

Water supply and San Diego County’s climate future

“Since our founding more than 75 years ago, our mission in partnership with our 24 member agencies is to ensure a clean and reliable supply of water for the region,” said Gage. “As part of that mission we’re involved in partnerships like the one that we have today and the research to ensure that we have planned for the impact of climate change in our water supplies.”

Gage said the Water Authority has developed a climate action plan.

“As part of our strategic planning we have developed a climate action plan which is an interdisciplinary effort to promote and coordinate implementation of climate change strategies and related activities across the Water Authority,” said Gage. “We have reached our goals for 2020 and we are on track for our 2030 goals.”

Atmospheric rivers and water management

The Water Authority partnered with the Scripps Institution of Oceanography, Center for Wester Weather and Water Extremes, at UC San Diego in 2020 to better predict atmospheric rivers and improve water management before, during, and after those seasonal storms. The Center and its partners share best practices in forecast-informed reservoir operations, increased research around atmospheric rivers and droughts, and develop strategies for mitigating flood risk and increasing water supply reliability.

Forecast Informed Reservoir Operations

Stored water releases

Marty Ralph, Researcher in Climate, Atmospheric Science & Physical Oceanography at Scripps Institution of Oceanography, and Director of the Center for Western Weather and Water Extremes, opened the panel with information on advanced research around atmospheric rivers.

Atmospheric rivers are long narrow bands of airborne water vapor, providing up to half the annual precipitation and mountain snow that is key to California’s water supply. New research allows reservoir operators to use atmospheric river forecasts to better predict storm events and prevent unnecessary stored water releases.

“This stored water has helped to cope with the third driest year on record for the region,” said Ralph.

Atmospheric Rivers

Atmospheric rivers more “impactful” with climate change

Another Scripps Institution of Oceanography researcher, Alexander “Sasha” Gershunov, said that California receives most the country’s extreme precipitation events due to atmospheric rivers. Low and medium intensity precipitation events are predicted to decrease, while high intensity precipitation events are predicted to increase, especially in California.

“With warming, atmospheric rivers get stronger, wetter, longer, and more impactful, and they also produce more of our annual precipitation total,” said Gershunov. “There are many implications of these changes from water resources management, to wildfires, to debris flows.”

Sasha Extreme Weather Events

San Diego Regional Climate Collaborative

Darbi Berry, Program Manager at the San Diego Regional Climate Collaborative, described projects moving forward in the region to address equity issues related to water availability and pollution. Advancing the Nexus of Water and Equity looks at how different communities are impacted by a changing climate.

Increased variability in rainfall events and the potential for flooding in the San Diego region is a contributing factor to ongoing water quality issues in disadvantaged neighborhoods. One project carried out to address these equity issues is the National City, Paradise Creek project which re-graded a creek that was continuously overflowing and causing flood damage during atmospheric river events.

Nexus of Water and Equity

Watch the San Diego County’s Climate Future presentations by Marty Ralph, Sasha Gershunov, and by Darbi Berry here: bit.ly/3aBVt1Z

CW3E

High Performance Computing Makes a Splash in Water Cycle Science

/in , /by /Newswiseby University of California San Diego

The San Diego Supercomputer Center and the Scripps Institution of Oceanography, both located at UC San Diego, have forded a stream between high-performance computing and water cycle science.

This summer, SDSC’s petascale Comet supercomputer—which can perform nearly 3 quadrillion operations per second—will conclude formal service as a National Science Foundation resource and transition to exclusive use by Scripps’ Center for Western Weather and Water Extremes. The transition enables CW3E researchers to leverage Comet’s computing capabilities to improve weather and hydrological forecasts with the goal of enhancing the decision-making process associated with reservoir management over California, which could result in increased water supply and reduced flood risk over the region.

Full Story

Lake Powell Could Hit Near-Record Lows From Drought

/in , , /by /FOX 13 (Salt Lake City)by Lauren Steinbrecher

In cruising Lake Powell this year, as people explore canyons and take in the beauty of the rock formations, they’ll also see first-hand what extreme drought looks like.

They could come across previously submerged trees standing bare out-of-water. Or maybe they’ll notice the “bathtub ring” lining the canyon walls, where the water used to sit. Some lucky groups might even find shipwrecked boats revealed on the shore.

Full Story

Opinion: Drought Hits California — and Newsom

/in , /by /CALmattersby Dan Walters

By any standard, California is experiencing one of its periodic droughts after two successive years of below-normal precipitation.

“We are now facing the reality that it will be a second dry year for California and that is having a significant impact on our water supply,” state water resources director Karla Nemeth said in late March as the state reduced projected deliveries of water to 5% of requested demand.

Full Story

Western U.S. May Be Entering its Most Severe Drought in Modern History

/in , , /by /CBS Newsby Jeff Berardelli

Extreme drought across the Western U.S. has become as reliable as a summer afternoon thunderstorm in Florida. And news headlines about drought in the West can seem a bit like a broken record, with some scientists saying the region is on the precipice of permanent drought. That’s because in 2000, the Western U.S. entered the beginning of what scientists call a megadrought — the second worst in 1,200 years — triggered by a combination of a natural dry cycle and human-caused climate change.

Full Story

High Clouds, Cooler Weather Predicted for San Diego County

/in , , /by /KPBS-FM/TVby City News Service

Marginally cooler weather was predicted Sunday for San Diego County, with an expansive shield of high clouds, the National Weather Service said.

The marine layer should be sufficient to generate some sprinkles across the coastal basin Monday night into early Tuesday, and possibly again Tuesday night, with minimal accumulations expected, the NWS said.

Full Story