After a toasty three days that saw some parts of Del Norte County break triple digits, temperatures are expected to drop on both sides of the state line, though it’ll still be sunny and warm, according to the National Weather Service.

Gasquet reached 102 degrees on Monday, prompting weather forecasters to issue a heat advisory for the mountain community and other inland areas on the North Coast, said NWS meteorologist Alex Dodd. Though it wasn’t warm enough to shatter the June 11 record of 81 degrees set in 1936, Dodd said he expected 75 degrees at the Del Norte County Airport on Tuesday.

North of the Oregon state line, Brookings reached a high of 95 degrees on Monday due to the Chetco effect, said Brian Nieuwenhuis, a meteorologist from the weather service’s Medford office. Calling it a mini version of a Southern California Santa Ana wind event, the Chetco effect occurs when offshore winds bring warm inland air to the coast via the Chetco River gorge, Nieuwenhuis said.

Temperatures in Brookings reached a high of 92 degrees on Sunday, a huge change from Saturday when highs were 76 degrees, Nieuwenhuis said. Much of Curry County experienced highs in the 80s and 90s on Monday. Agness up the Rogue River reached 97, Nieuwenhuis said. Gold Beach reached the upper 80s, he said. And a small fire station at about 3,000 feet in Flynn Prairie, just east of Gold Beach reached 91 degrees, Nieuwenhuis said.

“Today is going to be warm, but it won’t be as warm as yesterday,” he said Tuesday, adding that he expects the winds will change, allowing the marine layer to resume its influence on the coast. “By tomorrow it’ll be warm, but it will be back towards a normal temperature reading.”

A ridge of high pressure brought warm weather to much of Northern California during the last few days, Dodd said. At San Francisco International Airport, temperatures reached 100 degrees, cracking that area’s monthly record, he said. Closer to home temperatures surpassed triple digits in Hoopa, Orleans, Weaverville and Ukiah, Dodd said.

Dodd said the ridge of high pressure has come on a bit stronger than normal for this time of year and is keeping the normal sea breeze on the coast lighter at bay.

“Once that high pressure system moved in it kind of effectively trapped all the relatively drier air down at the surface,” he said. “That hadn’t allowed any low clouds or fog to re-develop and allowed those typically hotter inland temperatures to expand a little bit more than they normally would back toward the coast. It’s prompted some excessive heat warnings in the Central Valley with triple digit readings there, which is not unheard of, but it’s the first real heat wave of the season.”

In Gasquet, Hoopa, Willow Creek and other inland areas and for parts of Southern Humboldt the heat advisory that was in place through 7 p.m. Tuesday cautioned residents to “slow it down” and drink more water if they’re going to spend an extended period of time outdoors, Dodd said. He also reminded people to make sure not to leave pets, youngsters and the elderly in the car even if temperatures are in the 70s.

“It doesn’t take much,” he said. “The car will just bake.”

Temperatures will cool off slightly to about the mid-60s on the coast and in the low 90s for Gasquet as Del Norte County heads into Wednesday, Thursday and Friday, Dodd said. However, it will still be sunny and warm through the weekend.

“We should start to see more of your typical fog and low clouds and highs will only reach the low 60s at best from the Thursday-Friday timeframe,” Dodd said Tuesday. “We should see some afternoon sun and we may see a little bit more sunshine this weekend with another north wind picking up.”

Since the recent heat wave started, more than 1,110 firefighters in Yolo County are battling a 2,220 acre wildfire that started Saturday, Newsweek reported Tuesday. The wildfire, which was 50 percent contained as of Tuesday, forced more than 130 people to leave their homes, though mandatory evacuation orders were lifted on Monday, according to Newsweek.

Reach Jessica Cejnar at jcejnar@triplicate.com .

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