Baker City sees heat burst, wind gusts after record-breaking heat

A sudden pre-dawn blast of wind and warm air jolted Baker City on Wednesday, with the temperature climbing 17 degrees in 20 minutes and gusts reaching 29 mph as residents woke to a sharp weather reversal. The episode followed a record-setting Tuesday, when Baker City Airport hit 89 degrees, topping the May 12 mark of 88 set in 1993.

By 3 a.m. Wednesday, the airport had cooled to 54 degrees. Then, between 3:05 a.m. and 3:25 a.m., the wind rose from 3 mph to a gust of 29 mph while the temperature jumped from 55 to 72 degrees. The temperature peaked at 77 degrees at 4 a.m., and the strongest gust at Baker City Airport hit 54 mph at 4:55 a.m.

Meteorologists described the event as a heat burst, also known as compressional heating, a phenomenon tied to air rushing downhill ahead of a strong cold front. The National Weather Service’s Boise office said the front would bring very gusty winds, a slight chance of thunderstorms and cooling conditions Wednesday, with Baker City forecast to see gusts up to 32 mph later in the day. Winds were expected to shift northwest by around 9 a.m.

The unusual warm-up-and-wind spike was not limited to Baker City. Similar swings were recorded across Baker County, including Blue Canyon, Baker Valley near Haines, Sumpter, Unity, Hereford and near Halfway. An Idaho Power station near Halfway recorded a 54 mph gust at 7:10 a.m., and another station between Jimtown and Carson northwest of Halfway logged a temperature jump from 59 to 75 degrees in 31 minutes.

The Halfway area took the brunt of the storm. Strong winds caused significant damage and widespread power outages, and Baker County emergency management director Jason Yencopal said trees falling across power lines sparked several small fires, all of them contained. Idaho Power crews helped local rural fire protection districts, including the Pine Valley Rural Fire Protection District and Eagle Valley Rural Fire Protection District, put out the blazes.

The Pine Eagle School District canceled sports practices and moved its junior/senior banquet to Tuesday, May 19, at 5:30 p.m. because roads were not clear for travel. After a record warm Tuesday, the fast-moving temperature reversal underscored how unstable conditions had become across Baker County as the cold front pushed through.