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A Giant Mass of Warm Water off the Pacific Coast Could Rival ‘The Blob’ of 2014-15

/in , , /by /Los Angeles Timesby Deborah Netburn

A large and unusually warm mass of water is threatening to disturb the marine ecosystem along the Pacific Coast from Southern California to Alaska, scientists from the National Oceanic and Atmospheric Administration said Thursday.

They call it the Northeast Pacific Marine Heatwave of 2019, and if it doesn’t dissipate soon, researchers said it could be as destructive as the infamous “blob” of warm water that caused massive toxic algae blooms along the coast and wreaked havoc on whales, salmon, baby sea lions and other marine life in 2014 and 2015.

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The Days Have Been Getting Shorter Since June. So Why Does The Weather Keep Getting Warmer?

/in , , /by /The Washington Postby Jeremy Deaton

It’s been a little over five weeks since the summer solstice, the longest day of the year. Since June 21, the days have grown progressively shorter. The sun has been in retreat, casting off a little less light every day, beaming down a little less heat. And yet, in many parts of the United States, the weather has only gotten warmer. Scientists have a name for this phenomenon: seasonal lag. In many places, the hottest day of the year comes weeks, or even months, after the longest day of the year. The reason for that has a lot to do with how water soaks up heat.

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Putting A Tempest into A Teapot: Can California Better Use Winter Storms To Refill Its Aquifers?

/in , /by /Stanford Universityby Felicity Barringer

This bipolar weather will have profound implications for the state’s $50 billion agriculture industry and the elaborate network of reservoirs, canals, and aqueducts that store and distribute water. A system built for irrigation and flood protection must adapt to accommodate more conservation. “The effects of climate change are necessitating wholesale changes in how water is managed in California,” the state Department of Water Resources wrote in a June, 2018 white paper.During droughts, farmers and municipalities pumped groundwater to augment sparse surface supplies. After nearly a century of heavy use, many aquifers are badly depleted.

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California Cold: Record-Breaking Chilly And Wet Weather Settles In, Along With A Hefty Snowpack

/in , /by /The Mercury Newsby Mike Branom

Any Californian who has simply had it with May’s gray, soggy chill had to hate the Memorial Day weekend. Rending asunder holiday plans of grilling at the park, or maybe some beach time, the final days of the month continued a statewide stretch of unseasonably cold, wet weather. On Sunday and Monday, precipitation fell and temperatures dropped, establishing daily records across the southern two-thirds of the state, from Modesto to Death Valley (0.04 inches of rain Monday).

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Mammoth Mountain received record snowfall in May 2019. Photo: Mammoth Mountain, Inc. California Reservoirs

California Reservoirs Near Capacity in May

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It has been a winter – and spring – for the record books, for California reservoirs and ski resorts. And, it’s not over yet.

Snow has continued to fall throughout May, with several inches or more in the Sierra Nevada and the southern California mountains.

In the lowlands, the City of San Diego has experienced one of its wettest months of May on record. The San Diego National Weather Service reported that Alpine and El Cajon set daily precipitation records on May 23.

The normal rainfall at Lindbergh Field during the water year (October 1 – September 30) averages about 10.3 inches. In the current water year, 12.7 inches of rain has been recorded at Lindbergh Field as of May 23.

May snowfall in the Sierra Nevada

“It’s atypical to see the snowpack increase in May,” said Alexi Schnell, water resources specialist with the San Diego County Water Authority. “The impact of atmospheric river storms helped push snowpack levels in the northern Sierra to 172 percent of normal as of May 23.”

Statewide Summary of Sierra Nevada Snow Water Content

A bountiful year for snow continued into May in the Sierra Nevada. Graphic: California DWR

Record snowfall also allowed many ski areas, from Squaw Alpine to Mammoth Mountain, to extend their ski seasons into late-Spring, with fresh powder in May a bonus for skiers.

A May to remember at Mammoth Mountain

Mammoth Mountain tweeted that it has received 29 inches of snow as of May 23, “officially our snowiest May on record, beating out May 2015.” (Video courtesy of Mammoth Mountain).

Major reservoirs near capacity

Many of the state’s major reservoirs are near capacity and are significantly above their historical averages as of May 23. Lake Shasta is at 97 percent of capacity and at 113 percent of its historical average.

Most major California reservoirs are near capacity and significantly above historical averages for May 23.

Most major California reservoirs are near capacity and significantly above historical averages for May 23. Graphic: California DWR

Summer is coming

Schnell cautions that this current water year is an exception, and the climatological cycle in California can bring several consecutive years of drought, like the 2015-2017 period, which prompted mandatory water-use reductions.

While the winter and spring has been ‘atypical,’ the summer could set some records too.

“Looking ahead over the next three months, the National Weather Service forecast shows that there is a greater than 50 percent chance the region will be warmer than normal,” Schnell said.

NWS Climate Prediction Center 3-month temperature outlook

NWS Climate Prediction Center three-month temperature outlook. Graphic: NWS/NOAA