Special Note--Thank you so much to everyone who has joined my new Western Washington Weather Facebook group over the past few days! In under one week, over 330 people have joined! Please keep sharing the group so we can get even more folks engaged with our weather! Join by clicking the Facebook logo to the right, then hit "join"!
--Matthew
-------------------------------------------------------------------
FastCast--Tuesday, Aug. 20 to Saturday, Aug. 24:
After multiple days with thunderstorms across the region, cooler, wetter, and generally unsettled weather will continue across Washington. Expect showers at times across the lowlands on Tuesday, with rain totals of 0.05-0.2". More showers are possible on Wednesday into Thursday, with grand totals of 0.3-0.5" across the lowlands by late Wednesday. There is also a low chance of thunderstorms in Western Washington on Tuesday afternoon, with brief thunder/lightning, heavy rain, and possible gusty winds in any thunderstorms. A similar thunderstorm threat is possible Wednesday into Thursday, but is more uncertain. Yet more rain is possible later in the week, but the details of the upper-level pattern are still evolving, and those details will determine rain amounts and coverage. Meanwhile, temperatures will remain on the cool side for this time of year, with highs in the upper 60s to low 70s across the region for the entirety of this week. However, with a decent amount of clouds around, overnight lows will remain in the upper 50s for the metro area, with outlying areas dropping to the mid 50s.
------------------------------------------------------------
Continue reading the full blog below!
After an active few days across the Northwest, unsettled (but somewhat calmer) weather will prevail. Let's take a look at the forecast!
We'll start with the European model forecast for total rain through Wednesday night, seen below.
This forecast shows the lowlands receiving 0.1-0.25" of rain due to scattered showers on Tuesday and Wednesday. The Kitsap Peninsula, where there is a potential for stronger showers, may get up to 0.3-0.5". Notice that more persistent rain will be found on the coast and in the Olympics, with up to 0.5-1.25" through Wednesday.
Let's compare this to the NWS NBM high-resolution forecast for total rain through Wednesday.
This forecast shows more widespread rain across the lowlands, with higher totals of 0.3-0.5" region-wide. The coast and Olympics get 0.5-1.1" in this forecast, with the Cascades getting 0.5-0.75".
There is also another thunderstorm threat on Tuesday afternoon, as seen in the European model lightning forecast below.
This forecast shows a potential for thunderstorms over the lowlands, especially from Seattle south toward Olympia and along Hood Canal. This setup is a more typical (and thus, more fickle) thunderstorm setup for the Northwest, and models are somewhat inconsistent on storm development. Be on the lookout for potential storms Tuesday afternoon, and remember to seek shelter indoors or in a vehicle during thunderstorms.
Finally, let's take a look at temperatures on Tuesday, seen below on the NWS NBM model.
On Tuesday, expect lowland highs in the upper 60s to mid 70s, coastal highs in the mid to upper 60s, and Willamette Valley highs in the upper 70s to low 80s. Eastern Washington will reach the low to mid 80s.
Next, here's a look at Wednesday.
Wednesday gets cooler region-wide. The lowlands will reach the upper 60s to low 70s, the coast will reach the low to mid 60s, the Willamette Valley will reach the mid 70s, and Eastern Washington will cool to the mid 70s to low 80s.
Finally, here's a look at Thursday's high temperatures.
On Thursday, Western Washington remains cooler, while Eastern WA heats up again. Expect lowland highs to reach the low to mid 70s, coastal highs to reach the mid 60s to low 70s, and Willamette Valley highs to reach the low 70s. Eastern Washington will be warming up, with highs in the upper 70s to upper 80s.
Stay tuned over the next few days as more active weather is possible!
No comments:
Post a Comment