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NOUS46 KSEW 062100
PNSSEW

Washington Precipitation Summary
National Weather Service Seattle WA
200 PM PDT Tue Apr 6 2021

March brought below normal precipitation for much of the state,
except for the Olympic Mountains, which received near normal
precipitation.  For the Water Year, all of Western Washington and
most of Eastern Washington are near to above normal.  Only the
Okanogan region and Central Basin in Eastern Washington are below
normal.

For Western Washington, the monthly percentage of normal for
precipitation ranged from 55 percent in the Southwest Interior to 94
percent in the Olympic Mountains.  The greatest amount of
precipitation at the climate stations for the mountains, coast and
interior lowlands was 12.79 inches at Forks in the Olympic
Mountains, 9.36 at Quillayute, and 5.14 inches at Elma in the
Southwest Interior.

For Eastern Washington, the percentage of normal for precipitation
ranged from 8 percent in the Okanogan region to 41 percent in the
Palouse and Blue Mountains.  The greatest amount of precipitation at
the climate stations for the mountains and lowlands was 1.07 inches
at Cle Elum on the eastern slopes of the Cascades, and 0.57 at
Northport in the Northeast region.

The outlook for April and beyond for Washington state, for the next
two weeks the outlook is for below normal precipitation.  The
monthly outlook for April calls for equal chances of above, below
and near normal precipitation for the state.  The three month
outlook for April through June calls for equal chances of above,
below and near normal precipitation for much of the state, except
for below normal precipitation in the extreme southeast corner.

The table below gives precipitation figures as a percent of normal
for regions of Washington.  The current water year began 1 October
2020 and ends 30 September 2021.

                         March     Water year      Past 3       Past 12
                          2021       to date       months        months
Western Washington
  Coast                    85          109          114           104
  Olympics                 94           98          105            98
  Northwest Interior       58          115          108           109
  Puget Sound Lowlands     70          108          121           110
  Southwest Interior       55           95          102            96
  West Foothills Casca     63          107          110           104
  Cascades West            60          108          111           105

Eastern Washington
  East Slopes Cascades     30          110          116           102
  Okanogan                  8           87           77            86
  Central Basin            12           73           70            74
  Northeast                23          102           99           102
  Palouse and Blue Mtn     41           95           83            96

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.

                     March            Water year       Past 12 months
                Inches    Pct       Inches    Pct       Inches    Pct

Quillayute        9.36     86        78.20    105       100.19    101
Hoquiam           5.75     82        58.62    112        72.23    107
Bellingham        1.75     56        28.18    117        40.06    114
Seattle           2.61     70        30.85    109        40.91    109
Olympia           3.01     57        43.50    111        53.89    108
Longview          3.00     64        36.39    105        49.40    103

Concrete          3.12     46        58.21    111        76.97    109
Snoqualmie Fall   3.80     61        43.98     98        60.92     98
Randle*           3.33     63        44.93    108        60.00    105
Diablo Dam        3.81     54        60.80    101        75.94     98
Stampede Pass     5.68     75        81.59    134       101.10    124
Paradise          7.88     63        98.49    108       122.19    103

Winthrop          0.04      4        11.97    120        14.33     97
Stehekin          0.65     23        37.56    124        43.30    120
Leavenworth*      0.63     30        25.23    124        29.05    116
Mount Adams*      1.65     30        38.10     99        41.64     91
Wenatchee         0.10     16         5.62     88         6.97     77
Yakima            0.08     13         4.47     79         5.72     69

Coulee Dam        0.12     13         6.32     99        10.40     96
Lind              0.07      7         4.70     73         9.16     94
Republic          0.33     26        10.93    124        20.49    121
Spokane           0.26     16         9.60     91        14.41     87
Pullman           0.84     53        12.93     96        19.45     96
Dayton            0.70     32        10.75     86        16.26     85

* = Estimated

$$
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