Wednesday has been a rainy day across Western Washington! Many areas have received over 1 inch of rain since 12 AM Wednesday. Daily rain totals have been 0.8-1.2 inches across the area.
More rain is expected Thursday through Saturday, with another 0.5-2.5 inches possible. Here is the UW Model rain forecast from Wednesday night through Saturday morning.
Wow! Looks like it’ll be quite wet across the area for the next few days.
In addition, thunderstorms are possible on Thursday. Rain will be more showery on Thursday, rather than steady rain like Wednesday. This will promote more convection, or development of strong showers/possible thunderstorms on Thursday. Here is forecast instability (CAPE Instability Index) on Thursday at 12 PM.
Values of 200-500 CAPE across Western Washington. This will support a chance of thunderstorms, so be prepared and take caution!
The final aspect of this multi-way storm system will be gusty winds. Expect winds gusting 20-35 mph Thursday-Saturday.
On Friday morning, a fast-moving and small low pressure center will move onto Vancouver Island. There is a chance that in its wake there could be a few hours of winds gusting 30-40 mph. This is only a chance, so don’t take it as something that is going to happen.
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