Weather with Cliff Mass

Weather with Cliff Mass
10:39 am
Fri October 17, 2014

Mass: Enjoy The Mild Weekend Before The 'Real Wet Stuff' Returns Next Week

Tim Durkan

This weekend will start off wet and cloudy, but the rain will give way to milder conditions, says KPLU weather expert Cliff Mass.

Mass says things will steadily improve over the weekend, with each day a bit better than the last.

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Weather with Cliff Mass
2:35 pm
Thu October 16, 2014

Got A Question About The Weather? Ask Cliff Mass

"Old Seattle proverb: If you don't like the weather, just wait 30 minutes."
Tim Durkan

Find yourself wondering about a certain weather pattern or phenomenon? Ask KPLU weather expert Cliff Mass. 

Every Friday, Mass chats with KPLU's environment reporter Bellamy Pailthorp about the weekend weather and the science behind it.

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Weather with Cliff Mass
8:00 am
Sat October 11, 2014

Mass: Expect Intensifying Rains With Global Warming

Spappy.joneS Flickr

Editor's Note: This story has been updated to include a link to Craig Welch's response. 

A warmer planet will certainly cause more intense rains in the Northwest and we should start getting ready for that now, says KPLU weather expert Cliff Mass.

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Weather with Cliff Mass
10:42 am
Fri October 10, 2014

The Weekend's Rain, Clouds To Give Way To Dry Sunday

Aaron Brethorst

Fall is in the air, and you’ll want to keep a raincoat handy, says KPLU weather expert Cliff Mass.

Mass says we can expect a big transition to deep autumnal clouds and rain early next week. But the weekend forecast is not as wet as predicted a few days ago, and Sunday should bring a break from the rain.

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Weather with Cliff Mass
10:27 am
Fri October 3, 2014

Want A Weekend Of Sun? You May Have To Hit The Road

Aaron Brethorst

The weekend forecast is more complex than usual, thanks to something called a dirty ridge moving in, says KPLU weather expert Cliff Mass.

Sunny Friday Before Dirty Ridge Moves In

Friday will be a "very, very nice day" with sun and temperatures reaching the lower 70s, thanks to a ridge of high pressure in the skies above.

“A perfect fall day – well above normal," Mass said.

But he says on Saturday, something called a dirty ridge is expected to move in, bringing dueling weather regimes with it. A dirty ridge is an area of high pressure that’s not strong enough to push out all the clouds and rain. As a result, it will allow two weather regimes to settle in over the region.

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Weather with Cliff Mass
12:42 pm
Fri September 26, 2014

Study: Don’t Blame Global Warming For Warming Weather — Yet

The Seattle skyline is seen through morning fog over Elliott Bay, Wednesday, Sept. 15, 2010.
Ted S. Warren AP Photo

It may be tempting to attribute current weather trends like the record warmth and early rains on climate change caused by humans. 

But KPLU weather expert Cliff Mass says a newly-published paper should give us pause. It shows that the global warming of approximately 1 degree Celsius on the U.S. West Coast since 1900 appears more likely to be the result of natural variations than of human inputs of greenhouse gases.

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Weather with Cliff Mass
10:29 am
Fri September 26, 2014

Rain Relenting; Above-Normal Temps And A Partly Sunny Weekend Ahead

A pedestrian hurries along in the rain Wednesday morning, Sept. 24, 2014, in Seattle.
Elaine Thompson AP Photo

Fall came in with a vengeance this week. An early atmospheric river dumped huge amounts of rain into the Northwest over the last few days, but it’s tapering off just in time for the weekend, says KPLU weather expert Cliff Mass.

“It actually looks like a decent weekend,” Mass said. 

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Weather with Cliff Mass
10:27 am
Fri September 19, 2014

Last Blast Of Summer Heat This Weekend Before Fall Returns Next Week

Tim Durkan

Don’t put away that sunscreen just yet.

Temperatures are expected to shoot back up into the upper 70s and even 80s for the last weekend of summer, topping off what will likely go down as the warmest summer in Seattle history.

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Weather with Cliff Mass
10:56 am
Fri September 12, 2014

Mass: 'Perfect Viewing Conditions' For Northern Lights This Weekend

The Aurora Borealis is seen in Yellowknife, Canada in August 2012.
Doug Mahugh

We may get a rare treat this weekend. There’s a real chance we might catch the Northern Light in western Washington, says KPLU weather expert Cliff Mass.

“Perfect viewing conditions,” Mass said. “The skies are not only clear but they’re dry. The viewing is good; the big question is whether we will actually see them.”

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Weather with Cliff Mass
10:36 am
Fri September 12, 2014

Thank 'The Blob' For This Warm Summer And The Sunny Weekend Ahead

"September sunsets — the best."
Tim Durkan

The record-breaking summer isn’t giving way to fall just yet. Another gloriously sunny Northwest weekend is in store, says KPLU weather expert Cliff Mass.

“We will have a really beautiful weekend — no precipitation, clear skies and warming temperatures,” Mass said.

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Weather with Cliff Mass
10:45 am
Fri September 5, 2014

Mass: Expect A Sunny, Hot Weekend To Add To The 'Best Summer On Record'

Dungeness Bay
Jeff Lilley

This summer, we’ve already beat the record for the hottest July and August ever in the Seattle area. And this weekend, we can expect to build on that trend with clear skies and warming temperatures pushing toward what will likely be the hottest full summer season on record, says KPLU weather expert Cliff Mass. 

“We’ve been having the best summer on record here in Washington state, and it’s not going away,” Mass said.

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Weather with Cliff Mass
9:51 am
Fri August 29, 2014

Mass: Cooler Weekend Ahead, But Don't Give Up On Summer Just Yet

"Dear Summer 2014...Don't leave us!"
Tim Durkan

It won't be long now. 

Fall is just around the corner, says KPLU weather expert Cliff Mass, and that means the holiday weekend won't be all sun. 

"We'll see a different weekend than we've been used to in the past," he said. "Temperatures are going to drop way back. No more 80s."

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Weather with Cliff Mass
11:15 am
Fri August 22, 2014

Mass: This Summer, One Of Hottest On Record, Is What Global Warming Feels Like

Ainsley MacDonald, right, and Will Walker, 10, try to leap above incoming waves as Calister MacDonald, left, 3, looks on Tuesday, July 1, 2014, at a beach on the Puget Sound in Mukilteo, Washington.
Elaine Thompson AP Photo

Keep the sunscreen and swim trunks handy. The clouds are melting away and the forecast predicts another hotter-than-normal weekend with temperatures above the mid-70s that are typical for this time of year.

KPLU weather expert Cliff Mass says we are experiencing one of the hottest summers on record and could soon chart the hottest one in Northwest history.

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Weather with Cliff Mass
11:19 am
Fri August 15, 2014

Mass: Summer In Western Wash. Went From Dry To Normal In Just One Week

Aaron Brethorst

A week of rain has turned what was a dry summer into a normal one, says KPLU weather expert Cliff Mass.

But don’t let the clouds and drizzle get you down. Mass says the forecast will progressively warmer and sunnier over the weekend.

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Weather with Cliff Mass
10:05 am
Fri August 8, 2014

This Weekend's High Temps, Sunny Skies Pushing Toward Record-Breaking Summer

Tim Durkan

Go ahead and gloat. We’ve got one of those hot, sunny August western Washington weekends ahead that make it worth living here despite the long, dark winters.

Low clouds will melt away, says KPLU weather expert Cliff Mass, as temperatures steadily rise over the weekend, hitting 90 maybe even as early as Sunday and certainly by Monday.  

“A warming period is going to happen,” said Mass. “And that’s because a trough that brought us cooler temperatures this week is moving off and a pretty high-amplitude ridge is building in its place.”

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