The National Weather Service confirmed that a tornado was spotted near the Aurora State Airport on Thursday afternoon.
KOIN 6, a news partner of the Woodburn Independent, reported that Aurora Fire Chief Rod Yoder said the storm flipped over two airplanes at the airport and downed power lines on Boones Ferry Road west of the airport.
The NWS of Portland issued a tornado warning for Clackamas County this afternoon. That warning expired at 4:15 p.m.
The NWS of Portland tweeted at 4:16 p.m. that "the storm has weakened and moved out of the area." At 4:23, the NWS of Portland tweeted that a meteorologist would be surveying the damage.
The Molalla River School District delayed its homecoming parade as a result of the tornado warning, according to a news alert.
Confirmed tornado! We received a call of a tornado on the ground near the Aurora airport & the airport observer also reported a tornado. https://t.co/QYMb7OUdUi— NWS Portland (@NWSPortland) October 12, 2017
We have a meteorologist down in Aurora who will be doing a damage survey in the next few hrs b4 sunset. We will share info as we receive it.— NWS Portland (@NWSPortland) October 12, 2017
The NWS of Portland released a preliminary report on yesterday's tornado at the Aurora airport, along with a report on yesterday's tornado in Mount Vista, Washington.
According to that report, the Aurora tornado started at 3:39 p.m. on Boones Ferry Road NE, west of the airport.
Greenhouses in that area sustained damage and the tornado continued to travel east across the airport property.
Two planes were flipped at Willamette Aviation Services. The tornado ended at Airport Road NE at 3:40 p.m.
The tornado was classified as a 0 on the Enhanced Fujita Scale, the lowest classification on the 0-5 scale.
The estimated peak winds were 65-70 mph, the path length was 0.6 miles and the maximum path width was 50 yards.
There were no fatalities or injuries.
The Mount Vista tornado started at 3:05 p.m. and was also classified as a 0 on the Enhanced Fujita scale. That tornado also caused no injuries or fatalities.
Two EF0 tornadoes confirmed yesterday. Here is the detailed write up of the storm survey results. pic.twitter.com/S3TvDk8EC9— NWS Portland (@NWSPortland) October 13, 2017
The NWS of Portland also tweeted a video of the tornado in Aurora.