705
NOUS46 KSEW 072118
PNSSEW

WASHINGTON PRECIPITATION SUMMARY
NATIONAL WEATHER SERVICE SEATTLE WA
218 PM PDT TUE MAY 7 2013

AFTER A DRIER THAN NORMAL MARCH FOR MOST OF THE STATE...APRIL 2013
DID BRING APRIL SHOWERS THAT BROUGHT NEAR TO WETTER THAN NORMAL
CONDITIONS FOR ALL OF WASHINGTON. EVERY REGION SAW 100 PERCENT OF
NORMAL OR GREATER PRECIPITATION FOR THE MONTH EXCEPT THE NORTHEAST
REGION...WHICH SAW 94 PERCENT. THE STATE CONTINUES TO SEE NEAR OR
ABOVE NORMAL VALUES FOR THE WATER YEAR.

IN WESTERN WASHINGTON...THE MONTHLY PERCENTAGE OF NORMAL FOR
PRECIPITATION RANGED FROM 105 PERCENT FOR THE SOUTHWEST INTERIOR TO
174 PERCENT IN THE NORTHWEST INTERIOR. THE GREATEST AMOUNT OF
PRECIPITATION AT THE CLIMATE STATIONS FOR THE
MOUNTAINS...COAST...AND INTERIOR LOWLANDS WAS 16.46 INCHES AT CEDAR
LAKE IN THE WESTERN CASCADES...10.93 INCHES AT QUILLAYUTE...AND
11.53 INCHES AT PALMER IN THE WEST FOOTHILLS OF THE CASCADES.

FOR EASTERN WASHINGTON...THE PERCENTAGE OF NORMAL FOR PRECIPITATION
RANGED FROM 94 PERCENT OVER THE NORTHEAST REGION TO 143 PERCENT
OVER THE EAST SLOPES OF THE CASCADES. THE GREATEST AMOUNT OF
PRECIPITATION AT CLIMATE STATIONS FOR THE MOUNTAINS AND LOWLANDS WAS
3.33 INCHES AT THE MOUNT ADAMS RANGER STATION ON THE EAST SLOPES OF
THE CASCADES...AND 2.78 INCHES AT NEWPORT IN THE NORTHEAST REGION.

THE OUTLOOK FOR MAY AND BEYOND...FOR THE NEXT TWO WEEKS THE OUTLOOK
IS FOR NEAR NORMAL PRECIPITATION FOR ALL OF WASHINGTON. THE MONTHLY
OUTLOOK FOR MAY IS CALLING FOR DRIER THAN NORMAL CONDITIONS FOR ALL
OF WASHINGTON...WITH A HIGHER PROBABILITY OF DRIER THAN NORMAL
CONDITIONS FOR THE WESTERN HALF OF THE STATE. THE THREE MONTH
OUTLOOK FROM MAY TO JULY CALLS FOR DRIER THAN NORMAL CONDITIONS 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
2012 AND ENDS 30 SEPTEMBER 2013.

                         APRIL      WATER YEAR     PAST 3       PAST 12
                         2013        TO DATE       MONTHS       MONTHS
WESTERN WASHINGTON
  COAST                   138          115          112           111
  OLYMPICS                116          102           96            99
  NORTHWEST INTERIOR      174          121          122           114
  PUGET SOUND LOWLANDS    159          114           92           111
  SOUTHWEST INTERIOR      105           98           76            96
  WEST FOOTHILLS CASCA    158          109          104           105
  CASCADES WEST           156          102          101            99

EASTERN WASHINGTON
  EAST SLOPES CASCADES    143           98           68            91
  OKANOGAN                100          111           61            95
  CENTRAL BASIN           103          102           65            98
  NORTHEAST                94          107           64            90
  PALOUSE AND BLUE MTN    111           94           75            93



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       10.93    139        96.00    116       110.28    111
HOQUIAM           7.40    145        67.35    118        75.39    112
BELLINGHAM        4.93    190        29.82    111        37.79    107
SEATTLE           5.89    217        36.21    117        42.29    113
OLYMPIA           4.52    128        43.31    102        49.29     99
LONGVIEW*         3.96    105        39.08    101        47.48     99

CONCRETE          7.21    144        62.47    109        73.35    104
SNOQUALMIE FALLS* 8.50    177        53.38    108        63.29    102
RANDLE*           6.84    166        51.39    112        61.59    108
DIABLO DAM        6.68    139        72.65    111        81.51    106
STAMPEDE PASS*   12.90    245        73.35    111        84.75    104
PARADISE         13.72    165       101.79    102       120.34    102

WINTHROP          0.93    122        11.53    107        12.55     85
STEHEKIN          1.56     98        32.64    102        35.86     99
LEAVENWORTH       2.15    194        20.85     97        21.57     86
MOUNT ADAMS       3.33    136        40.30     99        44.66     97
WENATCHEE         0.84    183         5.79     98         6.48     81
YAKIMA            0.40     73         5.10     82         6.41     78

COULEE DAM        0.84     97         6.88     95         8.06     75
LIND              0.50     60         7.81    107         9.86    101
REPUBLIC          1.07     87        13.55    134        17.73    105
SPOKANE           0.94     73        11.49     97        13.84     84
PULLMAN           2.37    135        13.22     87        15.90     78
DAYTON            1.47     85        12.24     86        18.31     96

* = ESTIMATED

$$
GRUB