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Hot Hot Hot!

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A high pressure ridge is still our main weather pattern bringing abundant sunshine and hot temperatures to inland areas, but the winds have shifted at the coast and the cool, moist onshore flow is now bringing the marine layer to that area. The marine layer will continue tomorrow causing low visibility at times, especially in the overnight and morning hours.

A cold front will pass to our north tomorrow flatten the ridge enough to cause our temperatures to drop just a few degrees, but we’ll still be unseasonably hot! The ridge re-builds late Friday into Saturday leading to once again the hottest day of the year…so far.

A cut-off low will form today off the central California coast and if it is able to tap into the southwest monsoonal moisture and advect into our region, we’ll see a chance for evening thunderstorms in northern California. The limiting factor is moisture with this system, but the instability is there, and since we have mountains, we have the lift! The favored regions will be the mountains, especially the Sierra Nevada’s, but any thunderstorms that form could move into Siskiyou county. While today and tomorrow is only a slight chance, Sunday our chances increase. That same cut-off low will open up and move further northeast and thus will have better access to the monsoonal moisture and thus brings in a better chance for evening thunderstorms for northern California and east of the Cascades.

Early next week we’ll see some relief from the heat! Thanks for logging on and have a great Wednesday!

Meteorologist Megan Parry