Category: Forecast

May 29, 2020 Summary:  Even though it is a very warm morning out there, the beginning stages of a rapid cooling trend are underway.  The marine layer has deepened along the coast and is up to 2,500 feet.  Winds through Pacheco Pass are currently sustained at 20 MPH out of  the west.  Up in the…

May 28, 2020 Summary: This will be the last day of this early season blistering heat wave.  Monitoring my favored stations over the mountains, we find very warm air once again this morning.  Sandburg at 4,100 feet was reporting 72 degrees as of 6:00am and even way up at 8,200 feet at Bear Peak, the…

May 27, 2020 Summary: Today and Thursday will be as hot as you’ll ever see it for this early in the summer season. Many locations will be 20 degrees above average.  Oftentimes you can look to the higher elevations to discern what will occur on the valley floor and today is one of those days. …

May 26, 2020 Summary: Temperatures at this hour are running anywhere from 6 to 8 degrees warmer than 24 hours ago.  What is taking place above the valley floor is quite telling.  The temperature at Sandburg at a temperature of 4,100 feet is 68 degrees while Bear Peak at the 8,200 foot elevation is at…

May 23, 2020 Summary: Low pressure is centered near the Wyoming/Idaho border this morning and is moving slowly eastward.  The backside of this low extends into northern California.  This will keep temperatures near seasonal values for one more day.  The well advertised impending heat wave is still very much in play this morning as strong…

  May 22, 2020 Summary: Currently, low pressure extends from the Canadian Rockies southwestward into northeast California.  This system will slide southeastward into the Great Basin later today and tonight.  As pressure differences increase between the coast and the interior, and a dry cold front moves through central California this  morning, winds will begin to…

ay 21, 2020 Summary: Temperatures at this hour are running 3 to 5 degrees warmer than 24 hours ago, both on the valley floor and over the foothills and mountains.  The freezing level continues to rise as the latest balloon sounding over Oakland indicated a freezing level of 11,600 feet, up from 8,300 feet 24…

May 20, 2020 Summary: The center of circulation of the low pressure system that brought active weather the past two days has moved into southern Idaho.  The air aloft remains quite chilly for this late in the season, but is beginning to recover.  The freezing level this morning above Oakland is now at 8,700 feet,…

May 19, 2020 Summary: Yesterday afternoon and evening was characterized by showers and isolated thunderstorms.  There were several reports of small hail, generally at or less than .25 of an inch.  The air aloft continues to be very cold for this late in the season.  The balloon sounding over Oakland taken a couple of hours…

May 18, 2020 Summary: The center of circulation of a deep cold core low is just west of Eureka this morning. the freezing level above Oakland taken a couple of hours ago was down to 7,000 feet. A cold front moved through the valley overnight and is now moving into southern California.  Doppler radar is…