Western Washington is shattering heat records left and right.
On Thursday, the thermometer at Sea-Tac Airport reached 91 and recorded the highest number of 90-degree or warmer days in a year.
That record, which stands at 10, likely will be smashed again with the forecast showing temperatures in the mid to upper 90s through the weekend.
The previous record was set in 1958 with nine days that reached 90 or hotter.
The National Weather Service has issued a heat advisory through Saturday night, warning people to take precautions against dehydration and heat exhaustion.
It’s also likely the month of July will go down as the hottest month ever recorded at Sea-Tac, Weather Service meteorologist Doug McDonnal said.
The average through Wednesday was 70.7 degrees, which includes daytime highs and nighttime lows. The hottest month currently on the books, which stretch back into the 1890s, was August 1967, when it averaged 71.1 degrees.
The heat isn’t just affecting the air, it’s also impacting local waters.
As high temperatures known as “the Blob” continue to move from the Pacific Ocean to Puget Sound, state officials are noticing record-breaking temperatures in the water.
“We’re measuring water temperatures in the Sound 4 degrees higher than normal from our past 25 years of record keeping,” said Christopher Krembs, an oceanographer with the state Department of Ecology. “We’re seeing warm water everywhere, from Olympia to Bellingham.”
The increase in water temperature means more harmful algae blooms, shellfish closures, lower oxygen levels and poor conditions for salmon and other species that prefer colder water.
Rivers as well are showing signs of warmer water and have lower flows more typically seen in September, Ecology hydrologist Jim Shedd said.
Stacia Glenn: 253-597-8653