The heat is going to continue into the start of this next work week. The main concern with the forecast at this point in the week is the thunderstorm threat. Later Monday afternoon we are going to see the winds shift to the Southwest as a closed low moves north along the West Coast. This will send several disturbances our way in the next two days. The main influences are going to be moisture and instability increasing across the viewing area.
For these reasons, thunderstorms are in the forecast for those areas that are most likely to see activity develop. Northern Lake and Northern Klamath Counties are the primary areas, but it’s certainly possible the Cascades could see a storm develop. Tuesday, thunderstorms will be more scattered as opposed to isolated. The winds will be picking up in the Klamath Basin on Tuesday, and this will not be good for dry lightning. It looks as though the NWS may be issuing a Fire Weather Watch for Modoc County, but the Klamath Basin will be a place to watch as well.
By the latter half of the week the thunderstorm threat diminishes and high pressure continues to expand across the West. Afternoon highs will be climbing for most areas, as triple digits are expected by the weekend in the valley’s and Siskiyou County.