Public Information Statement Issued by NWS Seattle/Tacoma, WA
000
NOUS46 KSEW 040430
PNSSEW
Washington Precipitation Summary
National Weather Service Seattle WA
930 PM PST Wed Mar 3 2021
February saw near to above normal precipitation for nearly all of
Washington state. The lone exception was the Okanogan region in
Eastern Washington which saw below normal precipitation. For the
Water Year, nearly all of Washington is still near to above normal
with the exception being the Central Basin in Eastern Washington
which is below normal.
For Western Washington, the monthly percentage of normal for
precipitation ranged from 103 percent in the Olympics to 205 percent
in the Northwest Interior. The greatest amount of precipitation at
the climate stations for the mountains, coast and interior lowlands
was 21.75 inches at Stampede Pass on the western slopes of the
Cascades, 11.54 at Quillayute, and 10.13 inches at Elma in the
Southwest Interior.
For Eastern Washington, the percentage of normal for precipitation
ranged from 37 percent in the Okanogan region to 152 percent on the
eastern slopes of the Cascades. The greatest amount of
precipitation at the climate stations for the mountains and lowlands
was 6.62 inches at Stehekin on the eastern slopes of the Cascades,
and 2.39 at Republic in the Northeast region.
The outlook for March and beyond for Washington state, for the next
two weeks the outlook is for above normal precipitation. The
monthly outlook for March calls for equal chance of above, below and
near normal precipitation for the state. The three month outlook
for March through May calls for above normal precipitation.
The table below gives precipitation figures as a percent of normal
for regions of Washington. The current water year began 1 October
2020 and ends 30 September 2021.
February Water year Past 3 Past 12
2021 to date months months
Western Washington
Coast 116 112 125 102
Olympics 103 99 108 95
Northwest Interior 205 128 150 114
Puget Sound Lowlands 130 114 128 110
Southwest Interior 134 103 111 99
West Foothills Casca 161 113 123 106
Cascades West 173 116 119 107
Eastern Washington
East Slopes Cascades 152 118 117 100
Okanogan 37 99 100 89
Central Basin 97 82 78 78
Northeast 120 118 127 105
Palouse and Blue Mtn 105 104 101 97
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.
February Water year Past 12 months
Inches Pct Inches Pct Inches Pct
Quillayute 11.54 111 68.84 108 98.25 99
Hoquiam 8.75 121 52.87 117 70.96 105
Bellingham* 5.96 205 27.14 129 41.98 119
Seattle 4.68 134 28.24 115 41.47 111
Olympia 7.84 149 40.49 120 54.23 108
Longview 8.00 163 33.39 111 49.22 103
Concrete 12.87 197 55.09 121 79.84 113
Snoqualmie Fall 7.51 139 40.18 104 61.84 100
Randle* 9.77 161 41.56 114 61.19 107
Diablo Dam 12.44 170 56.99 107 77.31 100
Stampede Pass 21.75 287 75.91 142 101.71 125
Paradise* 21.97 173 90.49 115 123.09 104
Winthrop 1.08 81 11.93 133 14.50 98
Stehekin 6.62 173 36.91 134 43.70 121
Leavenworth* 4.01 152 24.44 134 28.75 115
Mount Adams* 7.83 152 36.40 111 42.31 92
Wenatchee 0.91 91 5.52 96 7.28 80
Yakima 0.94 121 4.39 87 5.97 72
Coulee Dam 0.26 27 6.20 114 10.64 99
Lind 0.65 79 4.63 85 9.60 98
Republic 2.39 206 10.60 140 20.96 124
Spokane 0.84 63 9.34 105 14.96 90
Pullman 2.38 83 12.09 102 19.78 97
Dayton 2.49 146 10.05 97 16.51 87
* = Estimated
$$
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