Upper Troughing Extending South from an Upper Low Along the Border of Washington/Org will keep Eastern Sierra Weather Cool, Breezy and Dry through Wednesday…..Air-mass Modification Returns Along with some Moisture Advection Thursday Through Sunday Brings Possibilities of Thunder and low 80s back to the High Country…..
Monday July 16, 2012
Posted at 8:19 am by Howard
A small upper low near the Columbia River this Morning extends south off the the west coast. This feature has brought drying to our region and has scoured the area regionally of Moisture from Thunderstorms. The Eastern Sierra will now enjoy a brief break with below normal temps with highs in the low 70s through Mid week and cool nights in the 30s and 40s. Gusty afternoon and evening breezes are expected to 30 MPH which will will blow each afternoon and evening.
The next change in the weather will occur Thursday as remnants from Tropical storm Fabio, now well WSW of Cabo, lifts north toward Southern California later Wednesday.
According to both GFS and ECMWF global models, a small area of moisture/dynamics is channeled north into the Sierra between the upper Trof to the west and the upper High over the nations mid section. This is expected to begin Thursday morning. Beginning Thursday PM, air-mass modification will begin as the atmosphere moistens. At the Moment, the forecast is calling for a 20% chance of showers and or Thunderstorms returning to the high country Thursday.
In addition….The air-mass over the region is expected to warm considerably through the weekend and with the added moisture and weak dynamics, there is the potential for more significant precip by Sunday or Monday in the longer range. Stay tuned…..next update Thursday PM……
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