The interaction between the upper low off shore and deep subtropical moisture will increase dynamics this weekend and the threat of wetting thunderstorm’s across the Mono County area, mainly Friday through Sunday AM. This mornings guidance showed a VT max or easterly wave coming out of AZ into SE CA. Showers and thunderstorm’s were developing with this circulation. This system will increase the threat of precipitation for the Owens Valley later today and tonight. This organized band may produce heavy rain.   The band weakens after midnight tonight but may still produce some showers after midnight for the Mono County area.

 

For the Mono County area, the odds for wetting rains will increase Friday afternoon into Saturday night……

As a note, Summertime patterns are different then Wintertime patterns as this is not a storm that moves in and moves out. Rather, there are convective parameters that are pointing toward an increasing chance of rain over the weekend. Morning cloud cover can inhibit the convective process and so that parameter will be looked at each morning as well to judge the days convective potential for the Mammoth area.

Of note, there is likely to be an upper jet that comes through this weekend to the south of us associated with the upper low off shore. This upper jet is likely to dynamically enhance lift over the sierra, sometime Saturday or Saturday night.

 

More later…………………….