Heat in Lower Columbia, Oregon

A broad upper ridge of unusually high height coupled with a thermally-induced surface trough of low pressure lingered over the Pacific Northwest for several days. This pattern resulted in persistent offshore flow, and therefore many days of record-smashing high temperatures. Many cities in Oregon saw record-breaking daily high temperatures for multiple days in a row. Some examples from around the area at the peak of the heat on June 26th:Astoria had 85 degrees, with the old record at 81 degrees in 2000;Portland at 101 deg., with the old record at 94 in 1987;Troutdale at 102 deg., with the old record at 100 in 1987;Hillsboro at 102 deg., with the old record at 94 in 2002;McMinnville at 103 deg., with the old record at 98 in 1925;Salem at 103 deg., with the old record at 97 in 1987;Eugene at 97 deg., with the old record at 95 in 1987;Hood River at 100 deg., with the old record at 97 in 1968.Many of these record daily high temperatures were between 10 and 20 degrees above normal. Some sited even produced high temperature records for the entire month of June, and a few approached, but did not reach, high temperature records for the entire period of record.