The Fire Weather Watch in effect today has been upgraded to a Red Flag Warning. This is through 11pm this evening for Siskiyou, Modoc, Klamath and Lake counties. Showers will increase in coverage by this afternoon across the viewing area. The dry thunderstorm threat will be for Siskiyou County and the Klamath Basin, with more scattered chances over Northern California. The disturbance to our south has brought in a lot of moisture to the higher levels of our atmosphere, but very dry air still remains at the surface. As rain falls, very little will reach the surface if any at all, and as winds begin picking up by late afternoon, all the ingredients seem to be present for fire weather.
The warm air mass is still in place and will remain in place through the end of the week. The overnight cloud cover has kept temperatures mild this morning, but another hot day is expected. The thunderstorm threat is going to persist into tomorrow for Siskiyou County, with the rest of the viewing area looking at chances for showers. By the weekend, an upper level trough is going to knock temperatures down to seasonal values. This will be a cool and refreshing ten degree difference across most locations in comparison to recent temperatures.
Meteorologist Alyssa Caroprese