Light Snowfall Today….Then Heavy Snowfall Expected Thursday Night Into Friday Morning…..Improving weather Saturday with warmer weather Sunday through Mid Week……
Wednesday April 11, 2012
Posted at 8:59 am by Howard
Winter Storm Watch Thursday Night/Friday
Sierra Crest Storm Totals revised downwards to….up to 2.5 Feet over the next few days…
The upper low opened up yesterday….has become negative tilt with most lift to the south over Southern Ca this morning. Axis is SE/NW with active portion of 90% RH at 700MB into the sierra at this moment. This moist band will drop to 70% by early afternoon. Snowfall rates will be the highest this morning and then taper off a bit this afternoon. CRFC give the area just west of the Mammoth Crest about .7 inches by Thursday 03Z… or up to 7 inches over the crest with 2 to 4 inches at 8000 mainly today. The lack luster performance of the first system will cut this weeks snowfall totals down to about 2.5 feet over the crest by Saturday AM.
There will be a break later tonight in the snowfall from about mid evening through Thursday morning.
The next “Dynamic” system will enter the picture with strong upper jet support for our area later Thursday afternoon with the bulk of the snowfall Thursday night through about sunrise Friday. Additional snowfall is expected Friday…however the heaviest period appears to the from 06Z to 12Z Friday. Up to a foot is possible in the Town of Mammoth and another 18 to to 24 inches over the upper elevations by Friday evening…..
By Saturday AM, A period of upslope may add another inch or two to the eastern slopes. Saturday will be cold with highs in the 20s and 30s. A 534dm thickness pool will spend its time in the area Saturday.
Outside of a weakening trof coming through on the 23rd of April, there may be not much going on the rest of the month. The next possible stormy period may be in the first week of May.
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.