A longwave trough to our west is going to bring several disturbances our way the next several days. After Sunday, the only impacts will be along coastal sections. For now, cloud cover and shower/thundershower activity will be the primary concern through Sunday evening. Lightning strikes are occurring across Siskiyou County and Northern Klamath & Lake. Through the overnight hours instability will begin increasing for areas west of the Cascades. This will expand the thunderstorm threat to the entire viewing area, excluding Curry County.
For this reason, a Red Flag Warning has been issued for the region through Sunday evening. The weather models are indicating activity continuing through the overnight hours, and through much of Sunday as well without a decent break. Obviously the sun will help to fuel thunderstorms, so late afternoon and early evening will be the best time for thunderstorm development. There is a high moisture content in the air so both showers and thunderstorms will be rain producers. The higher terrain could see up to a half an inch of rainfall easy, although I am expecting more than this for those that see a good storm develop. Winds will pick up into the afternoon across the ridges also, but hopefully some good rains can develop over the existing fires and crews can stay on top of any new starts.
By Monday, this longwave trough off to the West is going to continue throwing systems further east, onshore. They will brush by the coastline, and bring some clouds inland. Light and spotty showers and/or drizzle is in the forecast through Wednesday for Curry County, and decreasing cloud cover further inland. Temperatures are going to gradually warm through the middle of the week, back to average. Expect the upper 80’s and lower 90’s for valleys and upper 70’s lower 80’s for the East Side.