Friday evening update - A lot of interesting weather over the coming weeks.

First off, note the monsoon moisture / t-storms lurking from east to west in the first slide.

We’ll feel a noticeable change in weather this weekend as we see a potential spillover of monsoonal flow creeping from south to north tomorrow (Saturday).

Can’t rule out some showers, and if we do get a break in the monsoon clouds Sunday, the Sunday evening atmosphere has a chance to bloom with instability.

Could we get lightning in the lowlands? Maybe. Probably not – but the Cascade and Olympic ranges are due for thunderstorms this weekend.

Heads up if you’re heading into the backcountry we may be dealing with dry lightning in the mountains (and possibly fires up in the high country too).

If you’re headed to Seattle for Seafair things may also get interesting (both Sat and Sun) with pilots having to deal with lower cloud decks both Sat and Sun.

In the extended, things are looking spicy.

The end of the second slide is showing a classic thermal ridge signature. Very pronounced.

It’s still off in the 10-day, so things can change, but we’re looking at a fairly strong signal (over multiple runs) for a heat wave from about August 14th into mid-month.

This one will likely see us tapping the low 90s, but there’s still a lot to re-evaluate over the next few days on that. Stay tuned.

Additionally we may be seeing a change in AQI as the weekend turns winds offshore, hopefully we’re not seeing a rash of dry lightning strikes over the weekend in the mountains, but I’m expecting we get a few fires this weekend from lightning strikes around the cascades.

Will update us on the thermal trough / heatwave as the data becomes available.

In the meantime, next week looks like we may have another shot at rain. Nothing dramatic, but we might get some residual moisture moving through before the heatwave drops. Consider capturing some rain for the following week!

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