A moist belt of westerlies will bring light rain and high elevation snow to the high country Thursday night and Friday, followed by colder weather over the weekend. The snow level will rise above 9500 feet Friday. However, as the belt moves south, Colder air with lowering snow levels will follow over the weekend. Overall, for the souther part of the central sierra, precip amounts are very unimpressive with 5 day totals of qpf up to .50 for mammoth. High temps Friday in mammoth will be in the low 40s  Cool to the mid 30s Saturday then upper 20s Sunday and Monday. This does not look like a plowable storm this weekend.  1 to 3 inches in town.

 

Climate:

Four significant modes of tropical variability can have an affect upon the weather in the mid latitudes. 1. Easterly Rossby waves, Kelvin waves, the Madden Julian oscillation and the IOD today. these air sea coupled waves can enhance or destroy the tropical convection  process.  El Niño and la nina are currently non players this year.  The drivers of our sub-seasonal climate this year is the record breaking IOD over the Indian Ocean.  Some of these aforementioned modes of tropical variability are currently constructively interfering with the IOD, thus enhancing an all ready highly convective system over the western Indian ocean, this appears to be the thriving force that will perpetuate a coming period of long wave troughing over the Easter Pacific in the coming weeks. It going to get stormy…