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June 2014
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May 2014 Precipitation Summary

Posted: June 2nd, 2014

ahps_may_2014

 

May’s summary is almost the same as April’s: for the fourth straight month, Seattle was wetter-than-normal. Last month’s 3.17 inches ranks 8th in 66 years of records. Longer-term records continue to be broken, as well: the past four months have been the wettest Feb-May ever.

 

Geographically, May’s rainfall distribution also resembles that of April. That is, the west side of the Cascade crest was mostly wetter than normal, while the east side was mostly drier than normal (particularly, it appears, alee of Mt. Rainier). Seattle ranged from about 75% to 125%, south to north.

 

The greatest 24-hour rainfall total of the month occurred on the 4th when 1.53 inches fell. (A daily record of 1.31 inches was broken on the 3rd.) There were 3 days with with greater than 0.50″, 6 days above 0.10″, and 8 above 0.01″. “Heavy rain” was reported three times, “rain” 4 times, and “light rain” 11 times.

 

References:
AHPS montly precipitation image
SPU Climate Change program
Email SPU’s Climate Change team