Posts

Snow to Spread Across West as Temperatures Plunge

An active weather pattern is in place across the western United States, AccuWeather forecasters say, and the arrival of a storm in the Northwest will eventually result in widespread impacts from California to the central and southern Rockies.

An area of low pressure was diving southeastward over the interior West on Tuesday. As the storm strengthens will moving into the Southwest region, areas of snow will break out and become locally heavy from the Sierra Nevada to the Rockies in Colorado and the various ranges in northern Arizona and New Mexico.

A Vision for More Sustainable Farmlands

From above, California’s San Joaquin Valley spills out of the Sierra Nevada in a checkerboard of earth-toned farmland. It’s some of the most valuable land in the world; every year, the agribusiness industry here produces billions of dollars’ worth of milk, vegetables and nuts. But the scale, and the industrial intensity, of agriculture require an enormous amount of groundwater to be pulled out of aquifers deep belowground — more than the industry can afford to pump, according to hydrologic modeling.

According to projections from the Public Policy Institute of California, between 535,000 and 750,000 acres — around 15% of the valley’s irrigated farmland — will need to be taken out of irrigated production in order to meet the requirements of the state’s Sustainable Groundwater Management Act.

How Much Rain Does California Need to Get Out of the Drought? A Lot Still

If you flashback to October, it might seem hard to believe that California’s Sierra Nevada would be experiencing a below-normal snowpack at this point of the winter. During October, the region was regularly pummeled with atmospheric rivers and major winter storms, with those storms dropping feet of snow in the mountains.

But as of early February, despite that strong start, the region has had its driest period of winter in recorded history. It has been more than 32 days and counting since the last snowfall at the U.C. Berkeley Central Sierra Snow Lab, breaking the previous record of 31 set in 1990.

A Record Dry January in Some Spots, With No Precipitation Currently on Horizon for First Half of February

Well, I don’t need to tell most folks twice: January 2022 was an exceptionally dry month across most of California and Nevada. Some spots saw a bit of rain and snow during the first couple days of the month, but others saw nothing at all; the last 25 days of the month brought essentially zero precipitation to the entire region. As a result, January 2022 will go down in the record books as the driest January on record (since at least 1895) for most of the San Joaquin Valley, the Central and Southern Sierra, and pockets of the Sacramento Valley and western Nevada.

Due to the clear and dry conditions, temperatures were (on average) warmer than usual for January, but with a wide diurnal spread: overnight minimum temperatures were actually slightly *colder* than usual, but daytime high temperatures were significantly above average (and, thus, won out on in the monthly average).

Snow Shuts Off in West as Drought Recovery Hopes Dim

Winter whiplash has hit California and the West. Doused in epic snow and rain in December, the region has just experienced one of the driest Januaries on record in many locations, and there are no storms in sight for at least the first half of February.

The weeks-long dry spell, in the midst of what should be the wettest two months of the year, is dashing hopes of meaningful drought recovery this winter. Water-year surpluses are sliding into deficits, and fire danger is on the rise in California. The reversal may soon emerge in drought maps.

Dry January Raises Drought Concerns, Precipitation Relief Not Immediate

The nice weather in January is setting the wrong record.

From a wet December to a dry January, this month saw such little precipitation it marks the second driest January on record.

“We need 20 to 21 inches more of precipitation over the Sierra to close the season out to finish at normal,” said Craig Shoemaker, a meteorologist and climate program manager for the National Weather Service.

Snowpack Up 160% in ‘Good Start’ to 2022

After two consecutive years of drought, the state Department of Water Resources conducted the season’s first manual survey of the snowpack Dec. 30 and found a promising result—deep snow totaling 160% of average for the time of year.

State Climatologist Michael Anderson said storms in December that dumped several feet of snow in the Sierra Nevada and brought much-needed precipitation were “a great start to the water year.”

Drought Remains a Threat Even After Wet December

Despite December’s heavy rains and record snowfall, water agencies remain geared up for California’s two-year-old drought to extend through 2022.

The precipitation did bring encouraging signs, including a Dec. 30 report from the Department of Water Resources that the snowpack at Phillips Station in the Sierra Nevada is at a healthy level. The 78 inches of snow was 202% of the average for the site at that time of year, offering hope for an abundance of the imported water used in much of Southern California.

2022 Promises Continued Climate Extremes, But Also A Glimmer of Hope for Californians

It’s a brand new year, and perhaps you have hopeful resolutions in mind—losing weight, getting politically active, leaving your house more often.

But when you look over your shoulder, the demon that was 2021 is lurking behind you. In its eyes is the pandemic that kept you in your house for way too long, on its breath are the flames that nearly burned down your favorite part of the Sierra, the sweltering heat from last summer, and the wildfire smoke choking out the space in your lungs.

Record Snowfall in Northern California May Help the State’s Electric Grid in 2022

The deluge of snow in recent days along the Sierra Nevada mountain range has been a record-breaker. And that’s not only good news for ski resorts but it may lead to a healthy boost in hydroelectricity production in California this coming summer, which would help the state’s often-strained electric grid.