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746
NOUS46 KSEW 302011 AAA
PNSSEW

Washington Precipitation Summary...amended
National Weather Service Seattle WA
110 PM PDT Sun Apr 30 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 above 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 215 percent
on the western slopes of the Cascades.  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 12.79 inches at Grays
River in the southwest interior.

For eastern Washington, the percentage of normal for precipitation
ranged from 186 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 5.49 inches at Newport 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.

                        March     Water year      Past 3       Past 12
                         2017       to date       months        months
Western Washington
  Coast                   211          134          117           117
  Olympics                161          124          108           110
  Northwest Interior      196          126          121           109
  Puget Sound Lowlands    206          139          144           122
  Southwest Interior      191          130          129           115
  West Foothills Casca    214          127          129           112
  Cascades West           215          128          123           115

Eastern Washington
  East Slopes Cascades    191          123          128           112
  Okanogan                230          163          173           130
  Central Basin           186          155          176           131
  Northeast               199          163          171           126
  Palouse and Blue Mtn    276          152          167           123



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       22.97    212       102.95    138       118.02    134
Hoquiam          15.94    228        70.27    135        79.41    137
Bellingham        5.65    181        33.77    140        40.58    125
Seattle           7.32    197        40.84    145        46.68    139
Olympia          11.34    214        52.44    134        58.16    133
Longview          8.64    185        43.89    126        54.05    126

Concrete         15.79    232        66.25    127        79.01    126
Snoqualmie Fall  11.10    177        53.23    119        67.26    124
Randle*          11.39    214        52.95    127        64.34    125
Diablo Dam       16.29    230        69.21    114        79.15    114
Stampede Pass    14.60    193        79.12    130        94.76    128
Paradise         24.40    194       123.18    135       146.87    139

Winthrop          1.73    168        12.59    126        17.00    135
Stehekin          7.42    259        41.61    137        45.23    139
Leavenworth       4.02    192        23.95    118        27.77    131
Mount Adams       9.97    181        55.40    145        58.71    150
Wenatchee         1.23    202         6.86    108         9.27    127
Yakima            0.98    158         9.46    167        10.98    155

Coulee Dam        1.80    198        11.81    186        15.70    162
Lind              2.21    215        12.13    188        15.63    185
Republic          2.09    166        14.92    169        23.62    156
Spokane           4.11    255        19.64    187        21.89    152
Pullman           5.25    332        18.34    137        23.18    131
Dayton            4.86    223        18.56    148        23.90    143

* = Estimated

$$
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