Archive for April, 2011

Another excellent powder producing system is bringing amounts in excess of a foot and a half over the crest today.  The surface front was located over Death Valley at 8:00am with a strong deformation zone at 9:30am located on a line from Monterrey to Tahoe. The main cold pool was centered along and over the northern Ca coastline driving SE.

As mentioned yesterday, there will be a good period of upslope beginning after midnight tonight through Friday evening as the 700mb low now near the Oregon/NV border drops into N/Central Ca after Midnight tonight. By 18z Friday it is located over the Southern San Joaquin Valley spending the afternoon there before kicking east into southern NV Saturday Am. (Good Upslope Pattern For Mammoth..especially Friday PM)

At the Moment…the QPF is not anything to write home about for Friday and Friday Night….well see.

Fair WX by Sunday before weak dampening system brings some showers Sunday night into Monday.

Still Watching to see what the middle of April will bring from next large storm. Will it effect Mammoth or will it be mostly to our north?????

At the moment, the GFS has the upper jet over Northern Ca while the ECMWF with its operational and ensembles keeping it even further to the north.  This is not real encourging for a signifacant snow producing storm for mid month………Stay Tuned!!

Dr Howard and the Dweebs…………………………….:-)

————————————————-
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.

The See-Saw of Spring will continue this week with a rather potent system moving into the Sierra Wednesday night. The system does not have a lot of over-water trajectory. However, it has a rather large 500mb to 1000mb; 522dm to 528dm thickness pool that will settle over Ca Thursday into Friday. With warm antecedent conditions in place, no doubt there is going to be some serious wind Wednesday night!  The QPF with the storm is not overly impressive, with possibly .50 to 3/4 of an inch over the crest. The bulk of the snowfall for the high country will be between 5:00am and 12:00 noon Thursday.  So possibly 6 to 8 inches on the sesame plot and 10 inches over the crest….just a good guess at this time. I am currently looking at 2 to 4 inches in town by Thursday afternoon.  Thereafter…it will be a cold snow showery pattern into Friday with possibly some upslope Friday?  Temps are headed for near record lows for this time of the year with highs in the 20s in town Thursday and in the teens at 10,000 feet. Some single digit lows possible Friday AM.

Retrogression is now in the cards toward mid month and so the next series of systems toward mid month may give Mammoth Pass a serious boost to an already high snowpack………

Stay Tuned………………………………..

Dr Howard and the Dweebs……………………………………….:-)

————————————————-
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.