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NOUS46 KSEW 271746 AAA
PNSSEW

Washington Precipitation Summary...amended
National Weather Service Seattle WA
1046 AM PDT TUE SEP 27 2016

August saw much below normal precipitation for all of Washington
state. For some sites throughout the state, especially on the
eastern side of the Cascades, August 2016 was in their top ten
driest for August. As we head into the last month of the water year,
all of Washington state continues to be in the near to above normal
range, despite the much below normal rainfall received last month.

In western Washington, the monthly percentage of normal for
precipitation ranged from 22 percent in the northwest interior to 62
percent in the southwest interior. The greatest amount of
precipitation at the climate stations for the mountains, coast and
interior lowlands was 2.25 inches at Forks in the Olympic Mountains,
0.81 at Aberdeen, and 1.95 inches at Grays River in the southwest
interior.

For eastern Washington, the percentage of normal for precipitation
ranged from 15 percent in the central basin to 31 percent in the
northeast region. The greatest amount of precipitation at climate
stations for the mountains and lowlands was 0.39 inches at Winthrop
on the eastern slopes of the Cascades, and 0.50 inches at Chewelah
in the northeast region.

The outlook for September and beyond for Washington state, for the
next two weeks the outlook is for below normal precipitation.  The
monthly outlook for September calls for below normal precipitation
for the southern third of the state, with equal chances of above,
below or near normal precipitation for the rest. The three month
outlook for September through November calls for equal chances of
above, below or near normal precipitation for all of Washington.

The table below gives precipitation figures as a percent of normal
for regions of Washington.  The current water year began 1 October
2015 and ends 30 September 2016.

                        August    Water year      Past 3       Past 12
                         2016       to date       months        months
Western Washington
  Coast                    36          111           78           112
  Olympics                 54          112           87           113
  Northwest Interior       22          109           69           111
  Puget Sound Lowlands     36          123           77           122
  Southwest Interior       62          113           88           111
  West Foothills Casca     38          115           89           114
  Cascades West            35          118           88           117

Eastern Washington
  East Slopes Cascades     27          133           91           131
  Okanogan                 23          117           97           114
  Central Basin            15          124           84           121
  Northeast                31          114           66           111
  Palouse and Blue Mtn     24          104           66           101



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.

                     August           Water year       Past 12 months
                Inches    Pct       Inches    Pct       Inches    Pct

Quillayute        0.67     27       102.17    107       108.39    113
Hoquiam           0.60     46        75.09    115        77.85    118
Bellingham        0.16     13        37.03    111        41.49    122
Seattle           0.17     19        48.12    134        48.95    139
Olympia           0.40     43        60.64    126        61.54    129
Longview          0.80     70        53.67    117        54.52    115

Concrete          0.29     17        74.18    110        78.65    115
Snoqualmie Fall   0.42     33        70.77    120        73.86    123
Randle*           0.46     38        62.51    115        65.14    118
Diablo Dam        0.31     19        77.94    105        81.76    111
Stampede Pass     0.76     49       100.53    130       104.83    131
Paradise          0.79     40       143.17    126       146.21    127

Winthrop          0.39     72        21.38    149        21.47    146
Stehekin          0.22     35        48.12    137        48.65    136
Leavenworth*      0.13     27        37.88    155        38.15    153
Mount Adams       0.03      5        58.59    131        59.01    131
Wenatchee         0.00      0        11.16    127        11.56    128
Yakima            0.00      0        10.54    133        10.55    128

Coulee Dam        0.00      0        12.60    122        12.66    118
Lind              0.06     19        12.10    129        12.66    130
Republic          0.27     33        21.01    130        21.38    129
Spokane           0.16     27        15.16     95        15.68     96
Pullman           0.24     13        19.95    107        20.64    102
Dayton            0.10     20        19.03    104        19.75    105

* = Estimated

$$
Grub



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