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Issued by NWS Seattle/Tacoma, WA

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NOUS46 KSEW 232303 AAA
PNSSEW

Washington Precipitation Summary...amended
National Weather Service Seattle WA
302 PM PST Fri Feb 23 2018

The first month of 2018 brought near to much above normal
precipitation to all regions of Washington State.  For a few spots
in the state, January 2018 was in their ranking for top ten wettest
January on record.  For Omak in Eastern Washington, January 2018 was
their wettest January ever.  As for the water year, all of
Washington is near to above normal.

In western Washington, the monthly percentage of normal for
precipitation ranged from 111 percent in the Southwest Interior to
142 percent in the Olympic Mountains.  The greatest amount of
precipitation at the climate stations for the mountains, coast and
interior lowlands was 25.77 inches at Forks in the Olympic
Mountains, 22.10 at Quillayute, and 16.04 inches at Grays River in
the Southwest Interior.

For eastern Washington, the percentage of normal for precipitation
ranged from 107 percent in the Palouse and Blue Mountains to 172
percent in the Okanogan region.  The greatest amount of
precipitation at climate stations for the mountains and lowlands was
9.46 inches at Mount Adams on the eastern slopes of the Cascades,
and 4.06 at Chewelah in the Northeast region.

The outlook for February and beyond for Washington state, for the
next two weeks the outlook is for below normal precipitation.  The
monthly outlook for February calls for equal chances of above, below
and near normal precipitation. The three month outlook for February
through April is calling for above normal precipitation for the
state.

The table below gives precipitation figures as a percent of normal
for regions of Washington.  The current water year began 1 October
2017 and ends 30 September 2018.

                       January    Water year      Past 3       Past 12
                         2018       to date       months        months
Western Washington
  Coast                   132          115          119           124
  Olympics                142          123          130           121
  Northwest Interior      140          130          130           121
  Puget Sound Lowlands    140          122          121           133
  Southwest Interior      111          108          102           120
  West Foothills Casca    125          120          113           122
  Cascades West           122          120          115           124

Eastern Washington
  East Slopes Cascades    119          109           98           120
  Okanogan                172          107          108           116
  Central Basin           131          112          108           126
  Northeast               165          118          119           119
  Palouse and Blue Mtn    107          134          135           134



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.

                    January           Water year       Past 12 months
                Inches    Pct       Inches    Pct       Inches    Pct

Quillayute       22.10    151        60.30    112       123.41    132
Hoquiam          12.93    125        44.52    117        84.93    133
Bellingham        6.48    142        23.95    132        44.73    133
Seattle           8.12    146        26.98    129        51.77    149
Olympia           9.87    126        35.63    125        67.48    143
Longview          7.00    106        27.71    110        56.83    126

Concrete         11.79    118        45.22    116        82.92    126
Snoqualmie Fall  11.86    134        37.95    115        74.89    126
Randle*          10.06    125        39.12    129        72.62    134
Diablo Dam       16.13    135        51.86    113        87.53    120
Stampede Pass    13.60    112        55.94    122       100.11    129
Paradise         18.25    100        73.81    112       137.13    124

Winthrop          3.16    162         9.18    120        17.25    132
Stehekin          9.26    141        30.97    131        50.52    149
Leavenworth       4.76    106        12.99     83        25.72    116
Mount Adams       9.46    129        31.84    115        63.30    153
Wenatchee         1.08     81         4.16     87        10.13    124
Yakima            2.17    189         4.57    107        10.36    152

Coulee Dam        2.04    192         4.99    111        13.41    135
Lind              1.78    152         6.46    140        14.00    156
Republic          3.94    264         7.90    123        20.59    130
Spokane           2.55    142         9.71    128        23.04    150
Pullman           2.19     88        11.05    123        25.16    131
Dayton            2.45    107        10.79    124        23.98    136

* = Estimated

$$

Grub



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