Archive for October, 2019

Next Windy System Arriving Tuesday night….PSPS is again possible……Turning colder Mid Week…..No Precipitation expected

Another dry cold front will be approaching Mono County Late Tuesday with moderate winds again expected….Strongest Winds will be with the steepest gradient. The timing is between 5:00AM and 11:00AM Wednesday morning.   The Planned Power Outage may occur,  well before this time….

Otherwise, expect cooler weather Wednesday and Thursday in Mammoth Lakes with highs in the 40s by Thursday after early morning lows down into the low 20s that morning.  It will gradually warm up over the weekend. The weather system is dropping down from British Columbia, CA.  The cold air dump is into the Great Basin. Pressures will build strongly East of the Sierra Wednesday and so areas west of the Sierra to the coast will have an off shore event with quite warm temperature’s. This is due to the compressional heating effect.

Next interesting weather system about the 19th


Note:  Moderate confidence exists for above-normal precipitation off the West Coast and into the Pacific Northwest and Northern California during Week-2, associated with anomalous troughing forecast in the Northeast Pacific that could phase with a second trough that may merge prior to this with the remnants of TS Hagibis. Remaining forecasts of above- and below-normal precipitation with moderate confidence over the next two weeks result from dynamical model consensus among CFS, ECMWF, and GEFS guidance.


Warming trend this week with above normal temps this weekend……The forecast looks dry for the next week….

After the Big Chill the past few days, Mammoth was climbing out of cold temperatures and warming up quickly. The Dweebs expect temperatures in the upper 60s this weekend!

Today, the  high temperature in Bishop Wednesday was 73 degrees and in Mammoth, 57 degrees. Lows this morning were 32 degrees and 24 degrees respectfully…

The Autumn Foliage season  is getting a late start in Mammoth with the yellow and red slower to develop this year. However, higher elevations are going off nicely.


Weather Discussion:

A Trough of low pressure will move through the area Thursday, creating gusty winds, but little change in temperatures.   Lows at night will come up to the low 30 degrees from the 20s of late.

This Trof may bring a short period of critical fire weather on Thursday.  Looking toward the weekend, ridging is the word. This upper ridge of high pressure will build through early next week.  The ridge flattens Tuesday into Wednesday with more afternoon breeze and somewhat cooler temperatures. (October 9th)

Another belt of westerlies pushes into the pacific NW the following weekend. This is more of a zonal flow with Mammoth remaining well south of the jet. Lots of high clouds possible but nice weather and seasonal temperatures. (Low 60s)

It will be the following week as we get into the middle of the month that a more significant Trof affects our area. This is around the 15th of the month of October, give or take a few days.


The Dweeber…………………………:-)