The heat continues as this next work week begins. High temperatures are going to remain in the upper 90’s and triple digits for the Rogue Valley & Siskiyou County today. Sunny skies will also continue this afternoon, but by tomorrow we will begin to see the impacts from a disturbance to our south that will be bringing the threat for thunderstorms by midweek.
As of now, Tuesday is still looking dry. Clouds will build up towards late afternoon across the viewing area, however I do feel that shower and thundershower activity will not begin until Wednesday. By then, the mid levels of our atmosphere will have cooled enough, moisture will be present, and increasing instability is going to really pose a threat for Siskiyou County. Other areas of concern though are the East Side & Cascades, with a slight chance for a pop up thunderstorm in West Side valleys. Expect the day to start off sunny with increasing cloud cover by the afternoon. Showers and very isolated thunderstorms will not begin until late afternoon. It’s possible they last for some time after the sun has set, as this is what the computer models have been indicating for quite some time.
Effective today, ODF has raised the fire danger level to extreme. With the recent fire activity, and with dry lightning in the forecast, this seems appropriate. There is talk of a Fire Weather Watch being issued for the conditions Wednesday, since thunderstorms are going to be a threat. This would be for Siskiyou, Klamath and Lake Counties. Even into Thursday we may see the thundershower activity continue for Southern Oregon, but it certainly will be an ongoing threat across Siskiyou County.
By Friday, the only area seeing a chance for thunderstorms is Siskiyou County although it’s certainly possible this could chance. The disturbance bringing this activity is much weaker by the weekend and then sunshine returns in full force to all areas. The heat on the other hand, does not seem to let up by next weekend, maybe with the exception of the East Side where temperatures will cool about 10 degrees. Highs in the valleys & Siskiyou County will remain in the mid 90’s.
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Meteorologist Alyssa Caroprese