Public Information Statement
Issued by NWS Seattle/Tacoma, WA

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937
NOUS46 KSEW 232020 AAA
PNSSEW

WASHINGTON PRECIPITATION SUMMARY...AMENDED
NATIONAL WEATHER SERVICE SEATTLE WA
120 PM PDT MON MAY 23 2016

IN CONTRAST TO MARCH...APRIL WAS VERY DRY WITH NEARLY ALL OF
WASHINGTON STATE RECEIVING MUCH BELOW NORMAL PRECIPITATION. THE ONLY
REGION THAT SAW NEAR NORMAL PRECIPITATION WAS THE PALOUSE AND BLUE
MOUNTAINS IN EASTERN WASHINGTON. EVEN WITH THE VERY DRY APRIL...THE
WATER YEAR REMAINS IN THE ABOVE TO MUCH ABOVE NORMAL CATEGORY FOR
NEARLY ALL OF WASHINGTON STATE...WITH THE ONLY EXCEPTION BEING THE
PALOUSE AND BLUE MOUNTAINS WHICH WERE NEAR NORMAL.

IN WESTERN WASHINGTON...THE MONTHLY PERCENTAGE OF NORMAL FOR
PRECIPITATION RANGED FROM 36 PERCENT ON THE COAST TO 73 PERCENT IN
THE NORTHWEST INTERIOR. THE GREATEST AMOUNT OF PRECIPITATION AT THE
CLIMATE STATIONS FOR THE MOUNTAINS...COAST...AND INTERIOR LOWLANDS
WAS 5.10 INCHES AT PARADISE ON THE WEST SLOPES OF THE
CASCADES...2.73 AT ABERDEEN...AND 3.85 INCHES AT MONROE IN THE PUGET
SOUND LOWLANDS.

FOR EASTERN WASHINGTON...THE PERCENTAGE OF NORMAL FOR PRECIPITATION
RANGED FROM 51 PERCENT ON THE EASTERN SLOPES OF THE CASCADES TO 90
PERCENT IN THE PALOUSE AND BLUE MOUNTAINS. THE GREATEST AMOUNT OF
PRECIPITATION AT CLIMATE STATIONS FOR THE MOUNTAINS AND LOWLANDS WAS
1.83 INCHES AT PULLMAN IN THE PALOUSE AND BLUE MOUNTAINS...AND 1.72
INCHES AT REPUBLIC IN THE NORTHEAST REGION.

THE OUTLOOK FOR MAY AND BEYOND FOR WASHINGTON STATE...FOR THE NEXT
TWO WEEKS THE OUTLOOK IS FOR BELOW NORMAL PRECIPITATION. THE MONTHLY
OUTLOOK FOR MAY CALLS FOR EQUAL CHANCES OF ABOVE...BELOW OR NEAR
NORMAL PRECIPITATION. THE THREE MONTH OUTLOOK FOR MAY THROUGH JULY
IS ALSO CALLING FOR EQUAL CHANCES OF ABOVE...BELOW OR NEAR NORMAL
PRECIPITATION.

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.

                        APRIL     WATER YEAR      PAST 3       PAST 12
                         2016       TO DATE       MONTHS        MONTHS
WESTERN WASHINGTON
  COAST                    36          118          117           110
  OLYMPICS                 43          118          119           110
  NORTHWEST INTERIOR       73          122          130           109
  PUGET SOUND LOWLANDS     57          133          125           122
  SOUTHWEST INTERIOR       59          122          109           110
  WEST FOOTHILLS CASCA     48          124          113           111
  CASCADES WEST            42          125          116           114

EASTERN WASHINGTON
  EAST SLOPES CASCADES     51          141          126           127
  OKANOGAN                 60          129          124           106
  CENTRAL BASIN            67          133          116           117
  NORTHEAST                64          129          123           106
  PALOUSE AND BLUE MTN     90          114          117            95



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        2.21     28        93.49    113       105.60    112
HOQUIAM           2.68     53        71.87    125        77.44    119
BELLINGHAM        2.38     92        34.41    129        42.00    124
SEATTLE           1.19     44        44.52    144        49.53    138
OLYMPIA           1.58     45        58.23    137        62.93    130
LONGVIEW          3.09     82        49.17    128        53.11    115

CONCRETE          2.52     50        68.58    120        77.62    116
SNOQUALMIE FALL   1.72     36        60.60    122        68.26    117
RANDLE*           1.97     48        56.20    123        63.14    116
DIABLO DAM        1.48     31        73.15    112        83.39    111
STAMPEDE PASS     2.84     54        91.83    139       100.63    128
PARADISE          5.10     61       132.22    133       142.83    127

WINTHROP          0.31     41        17.57    164        19.71    135
STEHEKIN          0.42     26        46.54    146        48.51    135
LEAVENWORTH       0.92     83        35.03    164        36.20    146
MOUNT ADAMS       0.49     20        56.25    138        59.47    130
WENATCHEE         0.50     94         9.30    135        11.21    127
YAKIMA            0.27     49         9.46    152        11.35    137

COULEE DAM        0.65     75         9.78    135        11.30    107
LIND              0.94    113         9.86    135        11.03    115
REPUBLIC          1.72    140        14.66    145        19.27    116
SPOKANE           0.32     25        13.44    114        15.25     95
PULLMAN           1.83    238        17.30    122        21.09    106
DAYTON            1.16     67        15.32    107        17.05     93

* = ESTIMATED

$$
GRUB



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