An upper ridge will strengthen over the west coast toward mid week increasing heights and temperatures. At the same time, a Trough of low pressure located at 140west Monday AM will become cut-off from the westerlies. Both the Upper Level Ridge and Cut-Off Low will shift east later this week allowing the upper levels to cool somewhat, thereby increasing lapse rates and instability. As a result, Mono County will experience more afternoon build ups beginning Tuesday, with isolated showers and or a thunderstorm possible. This will be mainly during the late afternoon and before sunset. The Fishing Weekend Outlook is a bit muddled as both ECMWF and GFS global models are at odds on whether the upper low comes in as an open trough or cut off low. The former would mean a lot more wind…  Stay Tuned, as soon as the models are in agreement,  I will post the Fishmass forecast a bit later this week.


In the meantime,  expect highs in the mid 60s in Mammoth and lows in the 30s through this Thursday. Winds will be light.