Not so Fab weekend coming up with more upper elevation wind than earlier throught…..Northwest flow aloft with embeded impulses to plague Mammoth for the forseeable future….

Quick update:

Changes to earlier thinking include a much flatter upper flow into the Sierra with more moisture in the upper levels. A now NW flow pattern will allow several impulses that will bring periods of wind as will as light precipitation. Some upper elevation snow and lower elevation rain is expected about every other day. Winds will be more on than off…..Temps will be mild with highs in the 40s and 50s and lows in the 20s and lower 30s.   Winds will range in the 15 to 30 MPH range in town with winds in the upper elevations 40 to 60+ MPH at times.


Remember it’s April and there will be many more “Fools Days” ahead weatherwise then just the first!  😉


The Dweeber…………………………………:-)

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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.

Weather to become windy, cooler and unsettleled Wednesday with snow showers…Fab Weekend coming up with warmer then normal temps…..

Discussion:

A series of impulses within a fast, low amplitude upper flow will allow periods of showers briefly from Central Ca then mostly northward through Thursday. The nose of 150 knot upper jet will move into Central Ca Wednesday bringing strong upper mountain winds, snow showers and much cooler temps during the day to Mammoth Lakes. Temps will begin to moderate on Thursday with lighter winds for the residential areas Thursday.

WX pattern over the Pacific:

A strong REX Block developing near the dateline by Friday with a closed upper high over the high Lat’s will force west coast heights to rise going into the weekend resulting in beautiful central west coast weather with warmer then normal temps. Expect high in Mammoth in the low 60s by Saturday/Sunday.

Thereafter, the upper flow de-amps and the upper jet settles south again into Central Ca Monday into the Tuesday with quite breezy conditions over the upper elevation Monday and especially Tuesday with a slight chance of showers. It will be cooler as well the early part of next week compared to the weekend.


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.

Sunny Skies for the Eastern Sierra with a short wave ridge over head……It’s offical, 606.5 inches for new benchmark and 41 year snowfall record…..4th wettest year since 1970!

This weeks storm put us over the top; (606.5 inches of snow)(Patrol-Site)

606.5 inches is a lot of snow! Also of significance is the water content at 68.73 inches tying the winter of 1986 for the 4th wettest since 1970.  However….the winter of 1986 was more noted for rain and Sierra Cement as only 432.6 inches of snow fell that winter. That was the year that the Sherwin’s Slid on the 19th of February I believe.  It was the classic “Pineapple Connection”.

Weather Discussion:

Key 500mb Height Anomalies in the 3 day means showing long wave positions as follows:

Negative height anomaly at 140W……Positive Anomaly at dateline and Western pacific negative height anomaly at 140E north of Japan.

Key eastern pacific height anomaly is too far west to promote significant precip into the Central Sierra. However there will be a period of strong winds from early Wednesday morning throughout the day and evening. Both EC and GFS has this idea.

By Thursday, the upper jet will be pushed northward by rising heights from the south. A rather protracted WSW fetch along with the upper jet will bring wet weather to the pacific northwest. Although there are differences between the EC and the GFS as is even more common during the change of the seasons…..our pattern will more likely be one of periods of warming and cooling along with periods of wind along those lines. The Dweebs feel that there will be another cold storm before the month is over as both 6 to 10 day and 8 to 14 day outlooks still have normal precip for the Mammoth area through the 24th of the month.

It think that it is safe to say that our base has peaked for the great winter of 2011!  Congradualtions….you all survived!


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.