There are three things needed for thunderstorms and those are instability, moisture and lift. Today all those ingredients will be present in abundance across our viewing area and thus an active thunderstorm day is ahead. Thunderstorms already firing this morning with peak activity between 3:00 and 8:00 this evening. Thunderstorms will be most numerous along and east of the Cascades and in Siskiyou county, scattered storms for west side valleys and isolated thunderstorms possible at the coast. Thunderstorms will be able to produce heavy rain and thus potentially flash flooding, especially east of the Cascades and Siskiyou county where the most potent storms will develop. Storms that keep their potency into west side valleys could cause localized flooding over already burned areas. Damaging wind and lightning will also be threats with storms today with gusts up to 40 to 50 mph, meaning any new lightning sparked fires could spread quickly.
A kicker trough will open up the cut-off low bringing us these thunderstorms tonight and push into the area over the weekend. This will keep temperatures unseasonably cool and disturbances will move through the trough bringing a chance for isolated thunderstorms this weekend. There is a slight chance for isolated Cascades storms late Saturday and isolated thunderstorms Sunday afternoon, once again mainly in the Cascades and only a slight chance for west side valleys and Siskiyou county.
Stay tuned to Newswatch12 for thunderstorms activity, especially today as many storms may become severe weather warned. Avoid outdoor activity during thunderstorms. Thanks for logging on and have a safe day!