Sunday 1:00pm Hydrology Summary…..24 Hour period…..


Here are some 24 hour Precipitation totals* around the region, the 24 hour period ending at 1:00pm Sunday; Courtesy of California RFC

*Unverified

Yosemite                 2.89

Mammoth Pass      5.68

Huntington Lake   3.88 

Bishop                        2.64

            

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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.

Another Major Surge of Moisture into Mammoth today then Hose to Shift South into Southern Ca Monday into Wednesday…..more snow for Mammoth through Mid Week

Satellite imagery shows a strong short wave trof about 700mi west of the crest moving toward the Northern California coast. This system is associated with the cold vortex and northern branch of the upper jet . As it intersects with the fire hose coming  in from north of Hawaii, another excessive period of snowfall is expected over the Southern and Central Sierra today. AMSU PWV are once again near 1.5 inches. The OAK sounding showing saturation for much of the column and is -22within the dendritic growth zone.

Bishop reported heavy rain mid morning with some power outages report as well in both Mono and Inyo counties.

Today and into tonight will be the heaviest snowfall for Mammoth. As the latest storm moves in to the Sierra, precipitation will focus along the entire length of the Sierra. Up-slope conditions are ideal with 700-MB winds from the southwest in the range of 45 to 65Knots. Add dynamics and you have periods of 2 to 4 inches an hour snowfalls. Expect this extremely heavy snow falls through early evening……then the intensity should slowly decrease as the cold front moves south. 

Snow levels will be falling later today and into tonight behind the front. 

The heaviest precipitation shifts southward into Southern Ca Monday…however, plenty of snowfall is still likely for the Mono County Sierra early to middle of next week.


Another 7 to 9 feet is possible between 4:00am Sunday through Tuesday over the sierra crest. The Village at  of Mammoth could see another 2 to 3 feet by Midnight tonight .

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.

Snowfall Rates To Increase Again tonight! The Night of Lights should be Spectactular!

So far….snowfall amounts ranged from 5 feet over the crest to 2 to 3 feet near the village. Snowfall to increase again tonight!

Today’s WX pattern is consistent with yesterday. Upper ridge continues over the dateline with weak tropical  low to the south near 22n-179w spinning up moisture. This pattern continues to advect moisture northward from west of Hawaii then NE toward the west coast. The deep vortex over Gulf of AK has now moved SSE to off the Oregon coast. The upper westerly flow is consoladating at the base of the upper low. Meanwhile subtropical moisture is being pulled eastward and as it approaches the west coast it is being energized by the upper jet.

Latest AMSU TPW shows a even higher moisture content within the river with peak values 1.5 to 1.6 inches now.  

Looking at the the NAM 12 Time Height Sections off the 18z Run, ( http://weather.utah.edu/index.php?t=nam212&r=MSA&d=ET#)  UVM was at low ebb over Mammoth Mt. today. DVM will continue until about 7:00pm (03z) then increase into the night. Plenty of deep moisture with this system…..way up to 300mb. Snowfall rates will increase again after 7:00pm…with peak UVM about 15z Sunday. (7:00AM) Plenty of Upward Vertical Motion exists through Sunday afternoon in the saturated air mass. Expecting another 2 to 4 feet at the village by Sunday night.

The cold front will move toward the state early Sunday and reach the coast during the morning.  FROPA for Mammoth should be about 02z Monday. (6:00pm Sunday) The max precip will be from Central Ca south toward Southern Ca.  

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


Potential Bluebird Morning……. December 22nd!


——————————————————————————–
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.