Light Upslope Flow to keep Snow showers in the Forecast Today and Again Sunday…..a few inches here and their are expected…..Weather to remain colder then normal through the Holiday……
Saturday December 29, 2012
Posted at 12:43 pm by Howard
Satellite motion shows a cold upper level low moving SE along/near the Ca coast line. South east flow has already developed over the Owens Valley and the Upper flow is beginning to veer more out of the NE along the Eastern Sierra. 500MB Temps are as cold as -27C in the cold core near Oakland, Ca this AM. The Action is gradually shifting southeast with the storm track. Expect light snow or snow showers to continue through out the day today and Tonight.
The next upstream system is dropping south through Western Nevada and will continue the light up-slope flow along with either light snow or snow showers through Sunday night. This pattern is especially favorable for Lake Effect “off Mono Lake” benefiting Lee Vining and or June Lake. There is now yet another short wave that will come down through Eastern Ca from the north. Like Sundays system, it will be moisture starved for just light snow or showers. It will again bring another reinforcing shot of cold air on New Years Day.
Short waves will attempt to move through the west coast ridge which is very sharp. However at this time, it is uncertain whether they will have much if any effect. The upper ridge actually progresses to a point over Eastern Ca by middle of next week and so the following upstream short wave energy plows into the upper ridge and becomes cut off to the SW of Mammoth, the second half of next week. This more then likely this will be a dry pattern for the Mammoth Area unless it cuts off…. off the South Central Ca coast.
No doubt…the pattern is in transition…… Lots of possibilities…………most of them cold and dry for a while…….
The Dweebs do not see a major snow producing storm for “at least” 2 weeks……………..
Dr Howard and the Dweebs………………………….:-)