August got back to its normal self for the past couple of days: being pretty hot. The high on Tuesday exceeded the prediction I had, and since the skies looked fairly clear this morning, Wednesday is on par with that track too. When will it be cooling down again? Hopefully soon, if not this week…
Tuesday – High 89°F, Low 67°F; Clear skies all day, with a few areas that had morning clouds here and there. Winds picked up some in the afternoon.
Wednesday – High 88°F; Clear skies for the majority of the day, with some scattered clouds moving in mid afternoon. Winds have been fairly calm as well, picking up slightly in the afternoon.
WARNINGS – There is a Small Craft Advisory in effect for the northern waterways, including parts of north Sound. For more information about the warning, please see here.
FIRES – Fire report was filed as of 11:38am 8/27. There are only 2, yes, 2 fires right now that have an incident management team, and those are a type 3 or below (not bad). Those fires are the South Cle Elum Ridge fire near Cle Elum (894 acres, 100% contained), and the Snag Canyon fire near Ellensburg (12,599 acres, 100%). For a map of the fire locations click here, and for details on the fires themselves click here.
As expected from the previous forecast, the jet stream will continue to move south over the next couple of days. By Thursday afternoon a little trough with cool air will move through the area. Then a small ridge will move in, warming it up again in the evening. After that a much larger trough will start to move in Friday morning as the jet stream dips further south. This is the first big trough we’ve had in a while, and it might herald the start of the change in weather for fall. We’ll see what will be associated with this trough later in the forecast, but it definitely looks like it will cool down.
The high pressure we’ve been seeing will stick around through Thursday evening, but by that point we can see the lower pressure start to move in from the northwest. As the day progresses on Friday, the low pressure will slowly start to overtake the high pressure, increasing cloud cover and possibly bringing in some showers.
It looks like a few scattered showers will pop up overnight and into early Thursday morning over the Sound, mainly around Kitsap and Seattle. Most of Thursday afternoon will stay relatively dry, but by commute time the showers that started in the mountains look to move down to the lowlands, starting with Kitsap. They will scatter some by the evening hours, but all areas can expect a shower or two, if that. The showers look to increase overnight, which may be a convergence zone giving its location and fairly linear form. Areas affect will be from Seattle north. These will weaken by the afternoon, and by that point there will be some smaller scattered showers. Not much with the CAPE model, but it looks like the Olympics could see a thunderstorm on Thursday. I don’t find it likely though.
We will definitely have some morning cloud cover tomorrow as that small trough moves into the area on Thursday. These will try to clear up some by the afternoon, but not my much. Clouds will start to increase again overnight, and stay overcast to mostly cloudy at least until towards the end of the forecast period.
Here are the 24hr precipitation totals.
Winds will calm overnight, then start to pick up again by the afternoon. Things will start to calm again overnight, but not as much as it has been with the systems moving in. The Sound will still stay a little breezy at least, but areas around the Olympics and Cascades may see some calm winds. As the day progresses, the winds will effectively go the exact opposite: areas immediately around the Sound will calm down, while all the other areas will see breezy conditions. The Strait will see high winds generally for the duration of the forecast.
With the troughs moving in and the increase in cloud cover, we can definitely expect at least a little bit of a cool down over the next couple of days. Thursday will see highs in the low 70s for the majority of the Sound, with the possibility of slight higher temperatures in the major metro areas. Lows will be in the high 50s. Friday will see highs in the lows 70s for south and central Sound, and actually cooler for Kitsap and north Sound, possibly dipping below 70. Lows will be in the high 50s once again.
TL;DR: Cooler temperatures in our immediate future, along with some rain!