Author: John Hibler

Summary: Temperatures are below freezing over the Pacific Northwest down to the beaches.  Snow showers are occurring along the coast with isolated snow showers over the Coast Range with snow on the hills just above Monterey Bay.  There are also light snow showers occurring over the Sierra Nevada and I noted the freezing level above…

February 18, 2018 Summary:  The leading edge of the cold air mass has now moved through the Sacramento Valley and is entering the northern San Joaquin Valley.  Even though temperatures are quite pleasant this afternoon, this will change in a hurry tonight through Thursday.  Light snow showers are occurring over many mountain areas of northern…

February 18, 2018 Summary: The center of circulation of a very cold, moisture starved upper low is over western Washington this morning.  The low center will begin to carve out a bitterly cold modified Arctic weather system over the Great Basin.  California will be on the western rim of the low, sandwiched between the low…

February 17, 2018 Summary: This will be the last day of relatively mild afternoons as we continue to be on the far eastern flank of a strong upper high which covers the bulk of the eastern Pacific Ocean.  The high will begin to move westward later today and tonight, farther out to sea, and will…

February 16, 2018 Summary:  Some moderation is occurring in the upper atmosphere this afternoon.  The freezing level has nudged up to 10,000 feet as opposed to 6,900 feet yesterday.  That massive eastern Pacific high has moved a bit further east, putting California under its umbrella.  Saturday will be the warmest day we’ll potentially see for…

February 16, 2018 Summary: It was again cold this morning with a few locations, especially in Madera and Fresno Counties, chilling into the upper 20s.  some  moderation will occur tonight and again Saturday night as high pressure off shore temporarily moves in.  some of the warmer locations Saturday may eclipse the 70 degree mark.  …

February 14, 2018 Summary:  The cold upper low off the southern California coast has drifted further south while the leading edge of the next dry wave of low pressure is moving into northern California.  The southern low will move quickly eastward through northern Baja and far southern California tonight and Thursday morning.  The clouds from…

February 13, 2018 Summary:  The center of circulation of a cold upper low is a bit further west this afternoon and is about 150 miles west/southwest of Santa Barbara.  The counterclockwise flow around the system is generating a few showers along the immediate south/central California coast from Santa Maria southward.  There is a swath of…

February 13, 2018 Summary:  it was cold last night, especially in Fresno and Madera Counties where cloud cover was less evident.  Madera, Sanger, and Fowler, as of 6:00am, were reporting a low of 29 degrees.  More in the frost discussion below.   The center of circulation of our cold upper low has now moved just…