Channeled Flow Aloft will make for a Dry Breezy Day today with little change in temperature…..SE flow to increase moisture and possibly Dynamics into the Sierra late this Weekend into Early Next Week…..
Tuesday July 16, 2013
Posted at 9:13 am by Howard
This mornings analysis showed a Trof of low pressure just off the Northern Ca Coast and higher pressure aloft to the east having the effect of channeling a Dry SSW flow aloft into the Sierra. This will make for a breezy afternoon and evening in the Mammoth area as well as the Owens Valley. Temps will be little changed from yesterday with highs a couple of degrees cooler in Bishop and upper 70s in Mammoth Lakes.
Over the next 48 hours….retrogression takes place in the Trof off the Northern Coast and the upper continental High over the east stretches westward eventually setting up over North Central NV by the weekend. With heights in the Mammoth area progged north of 994DM, Temps will again get into the mid 80s Friday into Saturday.
There is deep Moisture over parts of the Four Corners States from Monsoonal Flow out of Old Mex and Gulf of Mex. However, the upper flow is not conducive in advecting that moisture and/any dynamics into our area until late in the weekend. In fact, the new 12z GFS 700mb RH has the 50% RH line still over the Colorado River area AZ/CA Saturday Am at 12Z. However by Sunday the moisture and dynamics begin to Shift northwestward quickly Sunday into Monday. With heat already established over the Sierra for the Weekend, it will be interesting to see if any dynamic forcing will be included in the Mix to highlight some wetting rains. Otherwise well just get a lot of Clouds and cooler temps.