Yesterdays thunderstorms brought some nice rains during the afternoon. The two reporting stations in Mammoth indicated between .14 and .19 of an inch. There was small hail as well. The upper level low is getting the boot inland today as the first Fall Trof makes its way through Central CA at 18Z Thursday. Through the process, we’ll have another day of convection today and the chance of some thunderstorms, but today does not look as active as yesterday for Southern Mono County. In fact the Rapid Refresh Model keeps the bulk of the precip from about Mono Lake northward, for today Wednesday.

Longer Range:

Again…the transition from Summer weather to Fall will occur Thursday. Winds over the higher elevation may gust to 50mph at 10,000-11,000 feet over the passes. Much cooler temperatures are expected Friday with highs in the low 60s in Mammoth and low 50s at elevations above 10,000 feet. Overnight lows will trop to the 20s in the back country Friday AM, then the chilly air settles into the lower elevations over the weekend. Weekend Lows will be in the upper 20s and low 30s at elevations between 6500 and 8000 ft with highs in Mammoth in the low 60s.

By Monday some moderation in temps is expected of about 3 to 4 degrees. The warming will be short lived though, as an anomalous cold Trof for late Summer is forecasted to dig into CA Tuesday and Wednesday. Some of the quick details suggest 500MB temps of -19C and 1000-500MB thicknesses in the low 550s by Wednesday. No doubt it will be rather chilly as Summer makes its exit. These parameters suggest highs in the 40s on Wednesday with lows well down into the 20s. Say goodbye to your tomatos?

With this trof, will come the possibility of the first significant dusting of a few inches over the higher elevations. Climo looks good for this with the equinox storm. However, no matter what we expect, weather is always what you will get, so more time is needed to fine tune the details about the weather for the middle of next week.

Dr Howard and the Dweebs…………………..:-)