New Hourly Rainfall Record

By Rod Hill on 2010-09-08


Tuesday evening between 8:00 pm and 9:00 pm, 1.03" of rain was recorded.   The amount is the highest hourly rain total since PDX began keeping the statistic in 1953.  The spotter on duty, said most of the rain fell in twenty  minutes!  The previous record was .93" on May 24, 2008.  Total rainfall Tuesday at the airport was 1.55" of rain.  The amount is the 5th wettest September day at PDX and a new rain record for September 7th.  The old daily record was .26" in 1951.  Tuesday was also the wettest day in Portland since 2.49" of rain fell on Jan. 1st 2009.  Also, the rainfall puts the water year total at 37.45", which means we made it!  The average rainfall between Oct. 1st and Sept. 30th is 37.07 inches.  Portland's water year for 2009-2010 goes in the book as above normal!

To check area rainfall amounts, go to the Northwest forecast page and click on daily climate reports above the Northwest map.  More rain totals can be found by clicking on individual cities on the metro and Northwest currents maps.