Category: Forecast

March 20, 2020 Summary: Temperatures are running 6 to 10 degrees higher than 24 hours ago. Readings are actually making it into the low to mid 60s as of 1:00pm.  Overall, the pattern out there is a rather oddball one, and definitely complex.  There is a weak upper low which has drifted southeastward to southern…

March 20, 2020 Summary: A cold weak upper low remains this morning over western Nevada.  The far western side of this feature will hang over the San Joaquin Valley again today.  Combine that with the stronger spring sun and isolated showers and thunderstorms may be the result again this afternoon and evening.  The greatest risk…

March 19, 2020 Summary: The air mass above central California remains very cold and unstable.  Earlier today, the balloon sounding above Vandenberg found a freezing level of just 4,200 feet.  Up at Oakland, the sounding pegged the freezing level at 4,400 feet.  A cold pocket of air associated with a small upper low centered near…

March 18, 2020   We will be out of the office the morning of March 19.  Reports will resume that afternoon   Summary: Central California is between two low pressure systems.  The first is moving through northern Baja and southern California with widespread shower and thunderstorm activity as far north as Orange County and southern…

March 18, 2020 Summary: A couple of locations have reached the 32 degree mark.  However, the vast majority range from 33 to 38 degrees this morning.  up at Tuolumne Meadows in Yosemite, the temperature was 4 degrees below zero.  The cold low pressure system has morphed into two centers of low pressure.  One is over…

March 17, 2020 Summary: It is more like January than March out there this afternoon.  As of 1:00pm, temperatures were only in the mid 50s.  scattered showers have developed over the Coast Range and are spilling into the extreme west side of the San Joaquin Valley.  One cell, according to Doppler radar, has quarter inch…

March 17, 2020 Summary: Widespread heavy rain occurred yesterday through the early evening hours.  Rainfall amounts generally ranged from over .50 to more than 1.00.  Several rainfall totals are detailed below in the rain discussion.  The weather quieted down last night and, with clearing skies, most locations chilled into the 30s.  The only location I…

March 16, 2020 Summary: This has been quite a weather day in central California as a surface low developed right along the Coast Range with a stalled cold front right along the west side of the valley.  Along this front has been continuous precipitation.  It’s finally working its way into the southern and eastern flanks…

March 16, 2020 Summary: A strong winter storm is located roughly 150 miles to the west of the Golden Gate this morning.  A wide swath of precipitation is moving up the eastern side of the low, moving on shore from Ventura County to Santa Clara County.  Precipitation is widespread over the northern half of the…

March 15, 2020 Summary: Hugely beneficial rain and heavy snow have been falling in the Sierra Nevada north of Yosemite.  As much as 2 to 4 inches of rain has been recorded from Tuolumne County northward to the mountainous terrain of Lake Tahoe.  Some ski resorts are reporting as much as 3 feet of new…