Weather with Cliff Mass

Weather with Cliff Mass
9:58 am
Fri October 18, 2013

No Rain in the Forecast This Week, but More Fog, Afternoon Sun

Keith Seinfeld

The very dense fog hanging around the region this morning bodes well for a long sunny day ahead, and the week will continue with that pattern, says KPLU weather expert Cliff Mass.

“As I mentioned before, that’s a tremendously good sign,” said Mass, who teaches Atmospheric Sciences at the University of Washington. He says the densest fog usually means the sunniest afternoons.

“The clouds, the cold air, that low foggy layer is actually very shallow today and I expect it to burn out much quicker than it has in the past,” he said, predicting that it should be completely sunny outside by 11 this morning, with temperatures going up to around 60.

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Weather with Cliff Mass
10:00 am
Tue October 15, 2013

Why the Fall Brings Dense Fog, and Why That’s a Good Thing

A foggy October sunrise over Seattle, Lake Washington, Bellevue, and the Cascade Mountains.
Tim Durkan

Late September and early October are the foggiest time of the year in the Northwest, according to Cliff Mass, KPLU weather expert and professor of atmospheric sciences at the University of Washington.

Why is that? Mass says fall in the Northwest brings all the right ingredients.

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Weather with Cliff Mass
10:13 am
Fri October 11, 2013

Soggy Weekend Likely, but Glorious Fall Sun in Week Ahead

zenobia_joy Flickr via compfight

 

The clouds and light rain that have been darkening skies in southern King County should give way to dry weather and partly cloudy skies later today. And that’s just the first glimmer of nice fall weather in a week that promises to bring lots of mid-October sunshine.

That’s according to KPLU weather expert Cliff Mass, a professor of atmospheric sciences at the University of Washington.

“By this afternoon it’ll be partly cloudy,” Mass said, and “completely dry in all of western Washington.”

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Weather with Cliff Mass
10:13 am
Fri October 4, 2013

First Frost Today, But a Sunny Weekend Ahead

dorena-wm photo Flickr via compfight

Listen here for the extended weekend forecast - as well as Cliff's advice to the perennial question,"Should I buy a ski pass?" And his concerns about the effects of the government shutdown on weather predictions and research.

The first frost of the season hit the northwest Friday morning on both sides of the mountains, but skies will be sunny for much of the weekend.

Enjoy it while it lasts, since it will turn rainy again on Monday, says KPLU weather expert Cliff Mass, a professor of Atmospheric Sciences at the University of Washington.

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Weather with Cliff Mass
9:48 am
Fri September 27, 2013

Mass: Jaw-Dropping Front to Make for Wet, Windy Weekend

Jonathan Cooper

Cliff Mass says his jaw dropped when he looked at the satellite image of an approaching system.

That wet front due to arrive on Saturday is “so extensive, so wide, and so intense” for a September storm, says Mass, KPLU weather expert and professor of Atmospheric Sciences at the University of Washington.

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Weather with Cliff Mass
9:44 am
Fri September 20, 2013

Fair Final Days of Summer, But Rain to Herald in Fall on Sunday

Michael @ NW Lens Flickr via compfight

Listen to Cliff Mass' weekend forecast, plus his description of the massive Haboob (a dust storm) that hit eastern Washington earlier this week.

Right on cue, typical fall rains will usher in the official start of autumn with the equinox on Sunday.

But first we get to enjoy some milder weather for the final days of summer, predicts KPLU weather expert Cliff Mass.

“We’re gonna get some rain, but first we’re going to have a decent day today,” said Mass, a Professor of Atmospheric Sciences at the University of Washington. He says there’s a front right offshore, visible on the coastal radar. But it’s going to be coming in slowly.

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Weather with Cliff Mass
9:49 am
Fri September 13, 2013

Mass: Blue Skies, then Beginning of End of Summer this Weekend

Mark Grealish photo Flickr

Good news: summer's not over just yet! There are still some blue skies left in the forecast, says KPLU weather expert Cliff Mass. 

"About two and a half days, to be exact," says Mass, who teaches Atmospheric Sciences at the University of Washington.

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Weather with Cliff Mass
2:04 pm
Fri September 6, 2013

Unusual Culprit Led to 'Tens of Thousands' of Lightning Strikes

Jeff Abel Photography

“It was one of the most extraordinary displays of lightning that I can remember," said KPLU weather expert Cliff Mass. "There were tens of thousands, not thousands ... of lightning strike yesterday over the region. Just startling."

What caused the atypical show? Not the usual culprit, says Mass, professor of Atmospheric Sciences at the University of Washington. 

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Weather with Cliff Mass
9:15 am
Fri September 6, 2013

Mass: The Worst Is Over, and Summer Isn't Over Yet

Jonathan Cooper

The worst is over is now, says KPLU weather expert Cliff Mass.

“The heaviest rain, and certainly the lightning is over for the time being,” said Mass, professor of Atmospheric Sciences at the University of Washington.

And the good news, says Mass, is that things will get better—eventually.

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Weather with Cliff Mass
9:16 am
Fri August 30, 2013

Mass: Summer Weather Takes a Bow Over Long Weekend

Matthew Rutledge Flickr

Labor Day marks summer’s unofficial finale, and KPLU weather expert Cliff Mass says the warm weather with make a curtain call this weekend, though the beach-and-barbecue weather will be a memory by Monday.

"Today is the transitional day,” says Mass, a professor of atmospheric sciences at the University of Washington.

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Weather with Cliff Mass
1:31 pm
Fri August 23, 2013

Mass: There Are No Such Things as Chemtrails; Only Contrails

art_es_anna Flickr

Even on days with a clear blue sky, the skies aren’t completely empty. We’re all used to seeing those great white streaks across the sky behind airplanes.

Cliff Mass says he gets a fair number of questions about these contrails, many from conspiracy-minded people who believe they are part of a nefarious government plot.

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Weather with Cliff Mass
9:53 am
Fri August 23, 2013

Mass: Summer Slipping Away, but We'll Cling to a Few Rays of Sun

Tim Durkan

Autumn is creeping up on the northwest, but KPLU weather expert Cliff Mass says we’ll keep one foot–or at least a few toes–in summertime over the coming week.

Rain was falling early Friday offshore and over parts of eastern Washington, with western Washington nestled in the dry spot in between. Mass says variable clouds and cooler weather Friday will give way to some real overcast skies at the weekend’s start.

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Weather with Cliff Mass
10:03 am
Fri August 16, 2013

Mass: Typical Seattle Summer Weather to Make Glorious Return

Listen to Cliff Mass' weekend forecast, plus his description of how autumn is already in the air, dew points as an indicator of humidity and the dynamics behind the powerful thunderstorm that has swamped the North Cascades Highway (SR-20) with mudslides.

Hang in there—the feel of Seattle's great summers is coming back this weekend.  

The autumn-like weather we’ve been having this week will yield to more typical summer fare, with blue skies in the afternoons and temperatures in the 70s, says KPLU weather expert Cliff Mass.

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Weather with Cliff Mass
1:01 pm
Sat August 10, 2013

Strange Clouds a Work of Mother Nature with Help from Mankind

Gary Batie

Did you see them?

A line of unusual triangular-shaped clouds resembling prayer flags draped over us earlier this week.

“We call these mare's tails or fall streaks in the business,” says Cliff Mass, KPLU weather expert and professor of atmospheric sciences at the University of Washington.

The clouds were the work of Mother Nature, but with a little help from mankind.

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Weather with Cliff Mass
1:41 pm
Fri August 9, 2013

Mass: Oh, the Smell of Rainfall on Hot Concrete after a Dry Spell!

Half Man Half Ape Flickr

Cliff Mass has a soft spot for the smell of rain, more specifically rain showering down on hot concrete after a long dry spell.

“This is something I’ve noticed for years,” said Mass, KPLU weather expert and professor of atmospheric sciences at the University of Washington. “After a dry period, you have the first rain and there’s this smell. I kind of like the smell myself.”

The technical name for the smell is “petrichor,” which Mass describes as “sweet, musty.”

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