National Weather Force has issued a Thunderstorm Watch that expands from Northern California’s Valley and Mountain areas through to near the Kern County Border, effective now for Christmas Eve.
A strong storm system will move through the region. This will produce strong upper-level divergence (lift) along with instability. Given what is seen on these numbers, this will start in the morning and end by evening, so considering it a daytime event. These storms will also affect the Sierra Nevada, including the Mammoth forecast zones. This will no doubt give a chance of thundersnow. Thundersnow happens when snow is falling with thunderstorms present, which could easily produce high rates of snowfall.
Mammoth will see the 1–2-foot snow amount from this system due to the thundersnow.
NOTE: Within the member app, only directions within California are available. We will be changing this within this week so that certain city zones will be available for all, including Mammoth.
Raiden Storm
Master General Meteorologist