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Washington Precipitation Summary...amended
National Weather Service Seattle WA
127 PM PDT Sun May 28 2017

April was the third month in a row with above normal precipitation
for all of Washington state, with some regions in the eastern half
receiving greater than 200 percent of normal for the month.  For a
few places, April was in the top ten for wettest April on record.
With the continued above normal precipitation, the values for the
water year remain above normal for the entire state as well.

In western Washington, the monthly percentage of normal for
precipitation ranged from 124 percent in the western foothills of
the Cascades to 169 percent in the Olympic Mountains.  The greatest
amount of precipitation at the climate stations for the mountains,
coast and interior lowlands was 15.88 inches at Forks in the
Olympics, 14.43 at Quillayute, and 10.45 inches at Grays River in
the southwest interior.

For eastern Washington, the percentage of normal for precipitation
ranged from 131 percent for the Palouse and Blue Mountains region to
233 percent in the Okanogan region.  The greatest amount of
precipitation at climate stations for the mountains and lowlands was
4.69 inches at Mount Adams on the eastern slopes of the Cascades,
and 3.43 inches at Newport in the northeast region.

The outlook for May and beyond for Washington state, for the next
two weeks the outlook is for above normal precipitation.  The
monthly outlook for May is calling for equal chances of above, below
or near normal precipitation for nearly all of Washington, except
for below normal precipitation for the extreme southwest corner of
the state. The three month outlook for May through July 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.

                        April     Water year      Past 3       Past 12
                         2017       to date       months        months
Western Washington
  Coast                   168          136          163           127
  Olympics                169          128          149           120
  Northwest Interior      129          126          160           113
  Puget Sound Lowlands    159          141          192           129
  Southwest Interior      133          130          165           122
  West Foothills Casca    124          126          170           117
  Cascades West           130          129          168           121

Eastern Washington
  East Slopes Cascades    210          128          184           120
  Okanogan                233          170          220           142
  Central Basin           212          160          213           141
  Northeast               160          162          207           134
  Palouse and Blue Mtn    131          150          199           127



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.

                     April            Water year       Past 12 months
                Inches    Pct       Inches    Pct       Inches    Pct

Quillayute       14.43    184       117.38    142       130.24    133
Hoquiam           7.94    156        78.21    137        84.67    129
Bellingham        3.81    147        37.58    140        42.01    126
Seattle           4.21    155        45.05    146        49.70    136
Olympia           5.53    156        57.97    136        62.11    127
Longview          5.81    153        49.70    129        56.77    125

Concrete          6.14    123        72.39    126        82.63    121
Snoqualmie Fall   5.99    125        59.22    119        71.53    118
Randle*           5.10    124        58.05    127        67.47    122
Diablo Dam        5.63    117        74.84    115        83.30    110
Stampede Pass     6.74    128        85.86    130        98.66    125
Paradise*        10.80    130       133.98    134       152.57    133

Winthrop          2.65    349        15.24    142        19.34    133
Stehekin          2.38    150        43.99    138        47.19    132
Leavenworth       3.01    271        26.96    126        29.86    123
Mount Adams       4.69    192        60.09    147        62.91    138
Wenatchee         2.15    406         9.01    131        10.92    126
Yakima            1.29    235        10.75    173        12.00    149

Coulee Dam        1.78    205        13.59    188        16.83    162
Lind              1.17    141        13.30    182        15.86    172
Republic          2.93    238        17.85    177        24.83    157
Spokane           1.60    125        21.24    180        23.17    142
Pullman           1.92    249        20.26    143        23.27    123
Dayton            1.87    109        20.43    143        24.61    135

* = Estimated

$$

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