736  
NOUS46 KSEW 050340  
PNSSEW  
 
WASHINGTON PRECIPITATION SUMMARY  
NATIONAL WEATHER SERVICE SEATTLE WA  
840 PM PDT THU AUG 4 2022  
 
THE WESTERN HALF OF WASHINGTON STATE SAW BELOW NORMAL RAINFALL FOR  
THE MONTH OF JULY. FOR THE EASTERN HALF, JULY BROUGHT NEAR TO ABOVE  
NORMAL PRECIPITATION. FOR A FEW SPOTS IN EASTERN WASHINGTON, JULY  
2022 WAS IN THE THEIR TOP TEN WETTEST. FOR OMAK, IT WAS THE SECOND  
WETTEST JULY ON RECORD! FOR THE WATER YEAR, ALL OF WASHINGTON IS  
NEAR TO ABOVE NORMAL.  
 
FOR WESTERN WASHINGTON, THE MONTHLY PERCENTAGE OF NORMAL FOR  
PRECIPITATION RANGED FROM 25 PERCENT IN THE PUGET SOUND LOWLANDS TO  
60 PERCENT IN THE OLYMPICS. THE GREATEST AMOUNT OF PRECIPITATION AT  
THE CLIMATE STATIONS FOR THE MOUNTAINS, COAST AND INTERIOR LOWLANDS  
WAS 1.21 INCHES AT DIABLO DAM ON THE WESTERN SLOPES OF THE CASCADES,  
1.17 AT QUILLAYUTE, AND 0.58 INCHES AT ELMA IN THE SOUTHWEST  
INTERIOR.  
 
FOR EASTERN WASHINGTON, THE PERCENTAGE OF NORMAL FOR PRECIPITATION  
RANGED FROM 99 PERCENT ON THE EASTERN SLOPES OF THE CASCADES TO 171  
PERCENT IN THE OKANOGAN REGION. THE GREATEST AMOUNT OF  
PRECIPITATION AT THE CLIMATE STATIONS FOR THE MOUNTAINS AND LOWLANDS  
WAS 1.12 INCHES AT MAZAMA ON THE EASTERN SLOPES OF THE CASCADES, AND  
1.18 AT CHEWELAH IN THE NORTHEAST REGION.  
 
THE OUTLOOK FOR AUGUST AND BEYOND FOR WASHINGTON STATE, FOR THE NEXT  
TWO WEEKS THE OUTLOOK IS FOR NEAR NORMAL PRECIPITATION. THE MONTHLY  
OUTLOOK FOR AUGUST CALLS FOR BELOW NORMAL PRECIPITATION FOR THE  
NORTHWESTERN HALF OF THE STATE, WHILE EQUAL CHANCES OF ABOVE, BELOW  
AND NEAR NORMAL PRECIPITATION IS FORECAST FOR THE SOUTHEASTERN HALF.  
THE THREE MONTH OUTLOOK FOR AUGUST THROUGH OCTOBER CALLS FOR EQUAL  
CHANCES OF ABOVE, BELOW AND NEAR NORMAL PRECIPITATION 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  
2021 AND ENDS 30 SEPTEMBER 2022.  
 
JULY WATER YEAR PAST 3 PAST 12  
2022 TO DATE MONTHS MONTHS  
WESTERN WASHINGTON  
COAST 54 123 174 125  
OLYMPICS 60 119 156 120  
NORTHWEST INTERIOR 29 129 131 133  
PUGET SOUND LOWLANDS 25 118 162 118  
SOUTHWEST INTERIOR 56 121 161 122  
WEST FOOTHILLS CASCA 50 119 155 120  
CASCADES WEST 53 123 175 125  
 
EASTERN WASHINGTON  
EAST SLOPES CASCADES 99 111 165 112  
OKANOGAN 171 103 172 106  
CENTRAL BASIN 103 105 162 107  
NORTHEAST 107 99 124 101  
PALOUSE AND BLUE MTN 105 126 207 125  
 
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.  
 
JULY WATER YEAR PAST 12 MONTHS  
INCHES PCT INCHES PCT INCHES PCT  
 
QUILLAYUTE 1.17 74 125.16 133 135.64 134  
HOQUIAM 0.15 18 77.38 119 83.62 122  
BELLINGHAM* 0.18 18 46.85 143 53.64 149  
SEATTLE 0.18 30 46.00 125 49.13 125  
OLYMPIA 0.09 17 58.41 123 61.73 122  
LONGVIEW* 0.35 56 51.07 114 54.25 113  
 
CONCRETE 0.57 47 75.45 114 83.35 117  
SNOQUALMIE FALL 0.68 55 69.44 118 75.07 119  
RANDLE* 0.60 50 64.08 120 69.07 121  
DIABLO DAM 1.21 97 92.73 128 102.55 133  
STAMPEDE PASS 1.16 90 96.91 122 103.73 122  
PARADISE 0.32 23 138.65 126 148.12 127  
 
WINTHROP 0.62 90 15.12 106 16.72 110  
STEHEKIN 0.58 126 49.62 140 52.07 141  
LEAVENWORTH* 0.44 99 25.51 104 25.77 100  
MOUNT ADAMS 0.21 47 50.33 114 53.17 116  
WENATCHEE 0.54 225 8.25 112 8.67 111  
YAKIMA 0.19 95 6.72 89 7.18 90  
 
COULEE DAM 0.60 122 9.40 91 10.80 98  
LIND 0.39 115 10.58 111 11.57 114  
REPUBLIC 1.15 99 16.77 101 18.00 100  
SPOKANE 0.34 81 15.08 98 16.58 101  
PULLMAN 0.45 115 22.47 137 23.67 135  
DAYTON 0.37 95 24.00 136 25.04 133  
 
* = ESTIMATED  
 

 
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