By Rod Hill on 2010-09-19
Below is a record summary from Saturday's heavy rainfall. The research and article are courtesy of Steve Pierce, with the local chapter of the American Meteorological Society:
"Record setting rainfall continues to wilt the rose city, as summer officially comes to an end in the next few days. For the second time in the past 10 days, Portland has set a daily rainfall record. Heavy showers rolled through the Portland area this evening setting yet another rainfall record. The Portland International Airport has set a new one day rainfall record for September 18th. As of 10pm the Portland airport has picked up 0.88" of precipitation for the calendar day. The old daily record for today was 0.82" set in 1998. PDX received 0.45" in just one hour tonight between 9pm and 10pm and 0.76" just this evening from 7-10pm. Portland has now received 2.93" of rainfall for the month of September, which is quickly rising up the charts as one of the wettest on record. As of 10pm, Portland currently sits in the #12 position for all-time wettest September's on record with almost half of the month yet to go. Portland only needs a few hundredths of an inch more of rainfall to quickly ascend into the top 10 and a little more than 1" of precipitation in order to overcome the all-time wettest September on record which was set in 1986 with 4.30" of rainfall. Additionally, Portland is now a full 2" above normal for the month of September. That is nearly 200% of normal. A normal September in Portland sees a little more than 1.50" of rain for the entire month, when averaged from 1940-2010. We have nearly doubled the average in just the first half of the month. After recording the coldest summer in 17 years, along with the wettest June on record, September is certainly leaving its own mark in the record books.