Dennis Mattinson’s Weather Forecast

FORECAST: Owens Valley / Mammoth Lakes / Mono County 
FROM: Dennis “Matt” Mattinson, Weather and Atmospheric Forecaster
FOR:  Sierra Wave Media: Eastern Sierra News
 / TV- 3 / www.395weatherandtravel.com

wx15

THU  MAY 07 2015

Our “Summer Like” pattern turns more “Winter Like” today and tomorrow, as a cooler upper low spreads its influence across the Central California interior. Rainfall totals are expected to be light, but with the possibility of isolated thunderstorms, amounts could be heavier in those areas affected. Certainly the mountains will see more moisture with light snow down to about 6,500 feet in the upper elevations. For the high Country, I expect 6 – 10 inches of new snow. Some of the higher passes, like Sonora, will run the risk of closure Thursday night. Snow impacts should be less on Friday, as the low begins to move east. Upslope flow will continue the chance of showers on Saturday, over the mountains, as the low leaves the area. Overall, temperature wise, we should see 15 – 20 degrees below normal for early May. On Sunday, ridging will start building in from the West.

Owens Valley:

Today: Cooler. 50% chance of showers & isolated thunderstorms. Highs 60 – 65 / Lows 40 – 45. Winds SE 10 – 20 mph.
Friday: 50% chance of showers & isolated thunderstorms . Highs 59 – 62 / Lows 42 – 45. Winds N 5 – 10 mph.

Mammoth Lakes (7,800 – 8,200 feet):

Today: 90% chance of snow showers & isolated thunderstorms. Highs 41 / Lows 31. Winds NW 5 – 10 mph.
Friday: 70% chance of snow showers & isolated thunderstorms. Highs 43 / Lows 29. Winds N 5 – 10 mph.

Mono County:

Today:  90% chance of showers & scattered thunderstorms. Snow level 8,000 feet. Highs 42 – 52 / Lows 25 – 35. Winds N 10 – 15 mph.
Friday: 60% chance of showers & scattered thunderstorms. Snow level 6,500 feet. Highs 46 – 56 / Lows 23 – 33. Winds N 10 mph.

Dennis’ precipitation % definitions:

20% – Unlikely
30 – 60% – Chance
60 – 80% – Likely
80 – 95% – Very Likely
95 – 100% – Virtually Certain

 
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