Nor’easter taking the punch out of the west coast system by forcing some splitting of the upper flow over the sierra……A period of Moderate to Heavy Snowfall is expected later tonight into Saturday then Fair Sunday through Thursday……..
Friday January 22, 2016
Posted at 8:52 am by Howard
The last in the series of storms is expected to bring a period of moderate to heavy snowfall tonight. Unfortunately, the timing of our west coast storm could not be worse as it will be running into the back pressure of the east coast Nor’easter that is spinning up at the moment. This shorter wavelength will act to force “some” splitting of the new west coast storm, which will tend to; 1. Cause less spill over to the east of the sierra crest by causing more shadowing; 2. Weaken the vertical motion field by creating an area of downward motion, “DVM”. Ultimately, it cuts the confidence level of the QPF, especially along the eastern slopes of the sierra. So best guess this AM is between 12 and 18 inches over the upper elevations and up to a foot in town. It is possible that we will get more like the NOAA, WPC, QPF forecast is touting….
The NWS has winter weather advisories for travelers beginning at 4:00PM this Friday afternoon through 4:00PM Saturday……A period of heavy snow will develop later tonight into Saturday AM….
Highs today will be in the low 40s with low 30s on Saturday. Night time lows are expected in the 20s tonight and low teens Saturday night. Sunday looks like a blue bird morning…..
It will be dry and partly cloudy Sunday through Thursday next week with another storm possible the following weekend…….That one may have a moderate “AR” attached to it, and it is a long way off for any details….
Dr Howard and the Dweebs………………………………:-)