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Issued by NWS Seattle/Tacoma, WA

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000 NOUS46 KSEW 062100 PNSSEW Washington Precipitation Summary National Weather Service Seattle WA 200 PM PDT Tue Apr 6 2021 March brought below normal precipitation for much of the state, except for the Olympic Mountains, which received near normal precipitation. For the Water Year, all of Western Washington and most of Eastern Washington are near to above normal. Only the Okanogan region and Central Basin in Eastern Washington are below normal. For Western Washington, the monthly percentage of normal for precipitation ranged from 55 percent in the Southwest Interior to 94 percent in the Olympic Mountains. The greatest amount of precipitation at the climate stations for the mountains, coast and interior lowlands was 12.79 inches at Forks in the Olympic Mountains, 9.36 at Quillayute, and 5.14 inches at Elma in the Southwest Interior. For Eastern Washington, the percentage of normal for precipitation ranged from 8 percent in the Okanogan region to 41 percent in the Palouse and Blue Mountains. The greatest amount of precipitation at the climate stations for the mountains and lowlands was 1.07 inches at Cle Elum on the eastern slopes of the Cascades, and 0.57 at Northport in the Northeast region. The outlook for April and beyond for Washington state, for the next two weeks the outlook is for below normal precipitation. The monthly outlook for April calls for equal chances of above, below and near normal precipitation for the state. The three month outlook for April through June calls for equal chances of above, below and near normal precipitation for much of the state, except for below normal precipitation in the extreme southeast corner. 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. March Water year Past 3 Past 12 2021 to date months months Western Washington Coast 85 109 114 104 Olympics 94 98 105 98 Northwest Interior 58 115 108 109 Puget Sound Lowlands 70 108 121 110 Southwest Interior 55 95 102 96 West Foothills Casca 63 107 110 104 Cascades West 60 108 111 105 Eastern Washington East Slopes Cascades 30 110 116 102 Okanogan 8 87 77 86 Central Basin 12 73 70 74 Northeast 23 102 99 102 Palouse and Blue Mtn 41 95 83 96 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. March Water year Past 12 months Inches Pct Inches Pct Inches Pct Quillayute 9.36 86 78.20 105 100.19 101 Hoquiam 5.75 82 58.62 112 72.23 107 Bellingham 1.75 56 28.18 117 40.06 114 Seattle 2.61 70 30.85 109 40.91 109 Olympia 3.01 57 43.50 111 53.89 108 Longview 3.00 64 36.39 105 49.40 103 Concrete 3.12 46 58.21 111 76.97 109 Snoqualmie Fall 3.80 61 43.98 98 60.92 98 Randle* 3.33 63 44.93 108 60.00 105 Diablo Dam 3.81 54 60.80 101 75.94 98 Stampede Pass 5.68 75 81.59 134 101.10 124 Paradise 7.88 63 98.49 108 122.19 103 Winthrop 0.04 4 11.97 120 14.33 97 Stehekin 0.65 23 37.56 124 43.30 120 Leavenworth* 0.63 30 25.23 124 29.05 116 Mount Adams* 1.65 30 38.10 99 41.64 91 Wenatchee 0.10 16 5.62 88 6.97 77 Yakima 0.08 13 4.47 79 5.72 69 Coulee Dam 0.12 13 6.32 99 10.40 96 Lind 0.07 7 4.70 73 9.16 94 Republic 0.33 26 10.93 124 20.49 121 Spokane 0.26 16 9.60 91 14.41 87 Pullman 0.84 53 12.93 96 19.45 96 Dayton 0.70 32 10.75 86 16.26 85 * = Estimated $$ Grub

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