An approaching upper level low spread more snow into the Mammoth area the past 24 to 36 hours. Mammoth Mountain has reported some 11 to 18 inches during that period.  Most of the snowfall has been of the over running type or warm advection snowfall. However, that is about to change as the current slow moving system makes its move inland into California today.

The upper center is currently located about 125 miles WSW of Monterrey Bay. A large band of heavier precip is currently noted by SFO Radar that is moving ahead of the upper low across Central Ca and into the San Joaquin Valley.  This band should kick off the moderate to heavy snowfall over the Mammoth area by this afternoon. Some snow showers have already begun in the southern portions of the Owens Valley near and north of the Kern County border.

The Models forecast this upper low to move slowly inland into Central Ca this afternoon with good dynamics as the front left exit region of an 110 knot jet traverses through south Central Ca.  NWSFO-RNO is expecting “up to” an additional 32 inches by Monday over Mammoth Mt.

Winter Storm Warnings are also hoisted for the Owens Valley for heavy snow this afternoon and a Winter Storm Watch is out for the Kern County deserts beginning at 4:00pm into tonight!

Traveler’s be safe!  Take warm blankets and food for the trip!

Longer Range:

Looks like a nice break Tuesday through Friday.  Some changes in the longer range in how the Greenland Block eventually evolves as well as the eventual development of the Northern mid Pacific Block…..Stay Tuned!……………………:-)

The Dweeber……………………….:-)

Reference Glossary of Weather Terms
Disclaimer: I have been a hobbyist meteorologist for over 30 years here in the Mammoth area and I do this for my personal enjoyment. The National Weather Service saves lives every day . . . I do not. When making important planning decisions please use information provided by the National Weather Service as they are the most knowledgeable and accurate information source available today.