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Just how wet has it been? It's not just Seattle under the frequent rains

Photo: Endless Reflection Photography

It's no secret it's been a bit wet around here -- even by soggy Pacific Northwest standards -- but new data released from the National Weather Service Thursday puts just how wet it's been in perspective. Many places had double their average rain for March, and are trending 20-50 percent or more above normal since the rainy season began in October.

Here's their latest precipitation summary:

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Washington Precipitation Summary
National Weather Service Seattle WA
553 PM PDT Thu Apr 13 2017

March was another very wet month for the state of Washington. All regions saw much above normal precipitation for the month, and for a few places, it was their wettest March on record. And with the second straight month of abov normal precipitation, the water year values remain above normal for the entire state as well.

In western Washington, the monthly percentage of normal for precipitation ranged from 161 percent in the Olympics to 221 percent in the southwest interior. The greatest amount of precipitation at the climate stations for the mountains, coast and interior lowlands was 27.20 inches at Cougar on the western slopes of the Cascades, 23.46 at Clearwater, and 17.99 inches at Elma in the southwest interior.

For eastern Washington, the percentage of normal for precipitation ranged from 187 percent in the central basin to 276 percent in the Palouse and Blue Mountains region. The greatest amount of precipitation at climate stations for the mountains and lowlands was 9.97 inches at Mount Adams on the eastern slopes of the Cascades, and 4.11 inches at Spokane in the northeast region.

The outlook for April and beyond for Washington state, for the next two weeks the outlook is for above normal precipitation. The monthly outlook for April is calling for above normal precipitation for the western half of Washington, with equal chances of above, below or near normal precipitation for the eastern half. The three month outlook for April through June is calling for equal chances of above, below or near normal precipitation for the entire state.

The table below gives precipitation figures as a percent of normal for regions of Washington. The current water year began 1 October 2016 and ends 30 September 2017.

The table below expresses precipitation in inches and as a percent of normal for a variety of locations around the state. Occasionally missing data at a site are estimated using observed data from surrounding stations.

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Thursday will be the next release of our seasonal forecasts but the 6-10 and 8-14 day forecasts still suggest wetter than normal conditions in the Northwest.


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