The year 2020 is going to be remembered for a lot of things, many of them not so good. Included in the not-so-good list is the drought that has plagued the West, lasting into 2021. According to the U.S. Drought Monitor, which has published weekly maps since 2000, the 2020 drought is the worst, in terms of its geographical scope, in more than 20 years.
The Department of Water Resources today conducted the third manual snow survey of the season at Phillips Station. The manual survey recorded 56 inches of snow depth and a snow water equivalent (SWE) of 21 inches, which is 86% of average for this location. The SWE measures the amount of water contained in the snowpack and is a key component of DWR’s water supply forecast.
“As California closes out the fifth consecutive dry month of our water year, absent a series of strong storms in March or April we are going to end with a critically dry year on the heels of last year’s dry conditions,” said DWR Director Karla Nemeth. “With back-to-back dry years, water efficiency and drought preparedness are more important than ever for communities, agriculture and the environment.”
California’s wet season has not brought much relief so far and the outlook is not promising.
The water year, which runs from October through April, started off slowly. October was the second driest on record for California. Later, strong systems – including an atmospheric river in late January that caused flooding, debris flows and feet of snow in the Sierra – brought needed moisture to the Golden State.
Crops are now blooming here in the San Joaquin Valley, which marks the beginning of harvest season for farmers.
As a drier-than-usual wet season continues to unfold, many are worried about how current drought conditions will impact this year’s crop.
There’s a race on in California, and each day matters: the precipitation during winter that fuels the snowpack in the Sierra Nevada and fills groundwater supplies has been slow to start, and faltering at best. Northern California remains stuck in one of the worst two-year rainfall deficits seen since the 1849 Gold Rush, increasing the risk of water restrictions and potentially setting up dangerous wildfire conditions next summer.
California’s water picture is heading in two different directions.
A major storm last week and a more modest system Tuesday continued to boost the Sierra Nevada snowpack, the source of one-third of the state’s water supply, in promising ways. But the Bay Area and most cities across Northern California remain stuck in one of the worst two-year rainfall deficits seen since the 1849 Gold Rush, increasing the risk of water restrictions and dry wildfire conditions locally next summer.
Greater San Diego could get 1.5 inches of rain from an “atmospheric river” weather system that will flow ashore Thursday night and last through Friday, when it also will leave a few inches of snow on the county’s highest mountain peaks, says the National Weather Service.
One of the biggest coastal wind storms in years walloped San Diego County Monday and ushered in heavy snow that blanketed the region’s mountains and driving rain that nudged wildland areas away from the precipice of drought.
San Diegans got a taste of winter weather Saturday.
“We were actually excited when we saw the rain,” said Forest Padilla, a San Diego resident.
The cold showers lasted throughout most of the day.
“It’s nice to have the rain every once in a while,” said Travis Robertson-Howell, a San Diego resident.
But it may be even nicer to have it a little more often. The latest drought map from the National Integrated Drought Information System showed much of the San Diego region is experiencing abnormally dry conditions.
Luckily it doesn’t appear to show drought in the area. The rest of the state isn’t so lucky. According to the map, drought exists in some way in approximately 95 percent of the state. The state was drought-free at this time last year.
“At this point in the winter it is still fairly early,” said Mike Lee, public affairs manager with the San Diego County Water Authority.
Lee says it’s too soon to raise concerns.
“Just a few storms can radically improve and change the water supply conditions in the snowpack in the mountains,” said Lee. “That can happen in February, sometimes in March, and even April.”
And even if we don’t get all the rain we need, he says the county has a back-up plan.
“Every five years we go through a rigorous planning process at the county water authority and with all of our member agencies across the region to ensure that even if we were to have three, four dry years in a row that we would still have enough safe reliable water to meet our region’s needs,” said Lee.
So for now, Lee says San Diegans can enjoy the wet weather as he expects more is to come.
Yes, it’s been pretty dry so far this winter, but there is no need to worry. The major winter storm that roared through Southern California Monday proved we can erase a month’s worth of rain deficit in one day. I recently explained how the climate where we live — the Mediterranean Climate — sees the majority of its annual rainfall in the winter months. In fact, a whopping 80% of Southern California’s annual rain and snow falls from December through March.
