Rain continues in many areas this afternoon and evening, except across the central Sound and the Seattle metro area with profound Olympic Mountain “rain shadowing” is allowing for overall drier conditions in the lee of the Olympics. This will fill in a bit into the evening hours. It is also windy out there with a Wind Advisory in effect until 10 pm for gusts over 40mph. These winds will calm down a bit into tomorrow morning.
The atmospheric river will shift south across Oregon and far southern Washington into Tuesday morning and that will mean not as much rain for the morning commute. However, the heavy rain will shift back northward Tuesday evening and stay around through midweek. We can expect the bulk of the rainfall from this event Tuesday night through Thursday.
It will also be windy once again on Wednesday which will bring another round of concern about trees suddenly falling in the soaked soils.
If you live in an area where flooding has occurred in the past, you will likely see some of the same conditions this coming week. As the week progresses, we will likely observe more rain from Seattle southward and less rain to the north of Everett. But it’s important to point out that all of western Washington will be impacted from heavy rain this week.
Snow levels near or above 5,000 feet means snow will fall only on the higher slopes and volcanoes.
A significant amount of rain is expected for our mountains starting Monday and lasting through Wednesday. Rainfall totals over 6 inches will be common with isolated totals over 10 inches across the south Cascades. The run-off of excessive rain will eventually lead to river flooding, and it looks like that threat will be greatest on Wednesday and Thursday
Rainfall will taper on Friday though the threat of landslides and fallen trees will continue into the weekend with saturated soils.
There will be adjustments to the weather forecast every day this week. Stay informed with the latest information on KIRO7.
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