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StormTracker 9 Forecast: Heat blast continues Wednesday

Heat blast continues Wednesday before cooling to near seasonable temperatures.

Posted: Aug 28, 2019 9:52 AM
Updated: Aug 28, 2019 10:09 AM

EUGENE, Ore. -- Congratulations! If you're reading this weather blog, then you survived the record heat on Tuesday.

We saw 100s in many of our inland communities and broke records in Eugene and Roseburg. Even the coast saw temperatures ranging from mid-70s to mid-80s, depending on where you live. With Eugene reaching 101 yesterday, it made yesterday not only the hottest day of the summer thus far, but the hottest day of 2019 so far. It was also the first 100 Eugene has seen since Aug. 3, 2017.

Fast Forecast:
Wednesday: Sunny w/ slight chance. Highs in mid to upper 90s
Thursday: Mostly sunny w/ slight chance. Highs in mid to upper 80s
Friday: Partly sunny. Highs in mid to upper 80s
Saturday: Sunny. Highs in low to mid 80s
Sunday: Partly Sunny. Highs in low to mid 80s
Labor Day: Mostly sunny. Highs in low to mid 80s
Tuesday: Partly Sunny w/ slight chance. Highs in low to mid 80s

Wednesday will not be as hot as Tuesday, but we'll still be tracking hot temperatures across our area. The only exception will be the coast. This is due to weak onshore flow allowing the marine layer fog Wednesday morning and a sea breeze this afternoon. Inland, a thermal low-pressure center over the Columbia Basin will strengthen, in turn cutting off the northeasterly winds and bringing more southerly winds.

Losing the northeasterly winds means we lose the downslope winds we had that warmed our temperatures in the valleys and lowered the relative humidity. Downslope winds occur when warm, dry air descends rapidly down a mountainside. Downslope winds really increase fire danger, hence why we had red flag conditions on Tuesday.

Despite this wind shift, heat advisories remain in place for the Umpqua Basin and the Willamette Valley. Highs Wednesday inland will reach into mid to upper 90s. With a heat advisory, remember to wear light, loose clothes, drink plenty of water, and limit your outdoor activity. This is due to the threat of heat-related illnesses.

Big changes arrive tonight, with a weak shortwave passing through from the south. This will bring the threat of isolated thunderstorms in the Cascades. There are still some questions as to the amount storms as the shortwaves move through dry air. If thunderstorms do form, then new lightning-caused wildfires are possible.

Morning clouds will persist on Thursday morning, but sunshine will return during the afternoon. Temperatures will be cooler, but more seasonable. Thursday afternoon will also see the threat for afternoon thunderstorms in the Cascades.


Friday will see more clouds in the mornings with afternoon sunshine with temperatures remaining in the 80s. Through the Labor Day weekend, expect mostly sunny skies and seasonable temperatures. There is a low coming out of the Gulf of Alaska, but there are questions in the models about where that low will track. Right now, we only have a slight chance of moisture early next week. We will keep you updated.

For more weather information, go to the KEZI 9 News StormTracker 9 weather page.

Oregon Coronavirus Cases

Data is updated nightly.

Confirmed Cases: 21272

Reported Deaths: 356
CountyConfirmedDeaths
Multnomah491795
Washington308825
Marion291170
Umatilla229028
Clackamas153840
Malheur78314
Deschutes60410
Lane5853
Jackson4652
Yamhill46013
Lincoln4169
Union3942
Jefferson3604
Morrow3573
Polk31312
Linn28110
Klamath2012
Wasco1923
Hood River1910
Benton1696
Douglas1511
Josephine1152
Columbia960
Coos910
Clatsop850
Crook471
Baker380
Tillamook340
Lake320
Wallowa191
Sherman160
Curry150
Harney100
Gilliam40
Grant40
Unassigned00
Wheeler00
Eugene
Few Clouds
89° wxIcon
Hi: 94° Lo: 52°
Feels Like: 89°
Corvallis
Clear
89° wxIcon
Hi: 93° Lo: 49°
Feels Like: 89°
Roseburg
Clear
90° wxIcon
Hi: 97° Lo: 56°
Feels Like: 90°
North Bend
Clear
62° wxIcon
Hi: 62° Lo: 51°
Feels Like: 62°
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