Weather with Cliff Mass

Weather with Cliff Mass
9:01 am
Fri December 2, 2011

Record high pressure stalls our weather, causes high winds in Calif.

Pedestrians, left, view trees blown over during a wind storm Thursday in Pasadena, Calif. High winds caused by the high pressure over Seattle flipped over trees and trucks and knocked out power to more than 300,000 California.
Associated Press

The weather we are experiencing today will continue for the next week, says KPLU weather expert Cliff Mass. And that means the high winds in California, parts of Utah and Nevada are likely to continue as well.

“We are going to see our weather dominated by high pressure right off shore in the Eastern Pacific – it’s going to prevent any weather system from getting in here,” Mass said. “So it should be dry for the next, at least, three to five days. No precipitation. No storms. No nothing.”

Read more
Weather with Cliff Mass
9:00 am
Fri December 2, 2011

If you are wondering about the weather ... ask Cliff Mass

KPLU hosts one of the northwest's leading weather experts, University of Washington professor Cliff Mass. Every Friday, Mass talks with KPLU's Keith Seinfeld about the weekend weather and the science behind it.

From time to time, they like to answer questions posed by listeners and readers. This page is your place to pose questions.

Read more
Weather with Cliff Mass
8:30 am
Fri November 25, 2011

Rain, rain going away ... but what a wet week!

... boy did we see a lot of this over the past week! Cliff Mass says we'll be seeing drier days ahead.
Alex Galkin Flickr

It may be drying out this weekend and into next week ... but this past week brought some serious rain.

Read more
Weather with Cliff Mass
9:01 am
Fri November 18, 2011

Good chance of snow tonight, tomorrow morning in south Sound

Yes, we're heading into that time of year ... snow. And, with colder than normal temperatures, the snow level has been pretty low.
Ken Douglas KPLU

We have all the ingredients for a light dusting of snow between midnight tonight and noon Saturday. What are those ingredients? The colder than normal air from British Columbia that could bring the snow level down to between 800 to 1,000 feet and some rain from the south, according to KPLU's weather master Cliff Mass.

Read more
Weather with Cliff Mass
9:03 am
Fri November 11, 2011

Gusty enough to knock down ... branches? a restaurant?

Commemorating the windstorm of 2003, this mural by Chris Hopkins is at Ivar's rebuilt restaurant in Mukilteo.

The type of wind and rainstorm blowing into western Washington has done some amazing damage in the past. Weather expert Cliff Mass is not forecasting anything so huge this weekend, but we will get a "westerly wind surge," gusty enough to expect some power outages on Whidbey Island. 

Winds could gust to 50 or 60 miles per hour in some parts of the Strait of Juan de Fuca -- as a front from the north accelerates down the strait and barrels into Whidbey and the Everett area.

Two examples that Mass recalls vividly:

Read more
Weather with Cliff Mass
8:42 am
Fri November 4, 2011

The sun is out, but it's cold ... what's happening?

The view of a sunrise from Tacoma on Wednesday, Oct. 26.
Jake Ellison KPLU

We're getting some beautiful sunrises and until we set our clocks back, we’re all up to see them!

Today and Saturday we’ll get some of those morning sprinkles, but the afternoons clear off with temperatures hitting around 50, and then starting on Saturday afternoon we get some “very interesting” weather for the Northwest, says KPLU’s weather expert Cliff Mass.

Read more
Weather with Cliff Mass
9:03 am
Fri October 28, 2011

Some rain into the weekend ... but watch for the most dangerous Northwest weather

The most dangerous weather in the Northwest? Even though the winter roads can clearly be hazardous, such as in 2008 when this bus slid down Capitol Hill in Seattle, but the worst is the sneaky ice caused by fog.
sea turtle Flickr

A strong storm front is moving in and will make today and Sunday mostly wet with a break from the rain on Saturday, KPLU's weather expert Cliff Mass says. And trick-or-treaters on Monday should have decent weather. 

After Friday's rain and windstorm subsides, you'll have a chance to ponder what Mass calls Washington's "most dangerous weather phenomenon."

Read more
Weather with Cliff Mass
9:10 am
Fri October 21, 2011

Unless you're under ‘the blue hole,’ we’re in for more rain

How the rain shadow over Sequim looks from space!

The Puget Sound region will be in for increasing rain with temperatures hanging up around the mid-50s through the weekend but letting up Sunday afternoon until Tuesday when there'll be more sun, KPLU's weatherman Cliff Mass says.

... unless you live or play under the 'blue hole' over Sequim, Port Angeles, Port Townsend – that area northeast of the Olympics.

Read more
Weather with Cliff Mass
8:53 am
Fri October 14, 2011

Indian summer! (Plus, how your forecast has been sharpened by the new coastal radar)

'With weather radars on both sides of the Olympics now, we can do something we have never done before,' Cliff Mass says, 'examine simultaneously both the enhancement of precipitation on the windward side of the mountains and rain shadowing on the other.'
Cliff Mass

A gray day today, but some perfect fall days are in store, according to KPLU and UW weather expert Cliff Mass.

"Tomorrow (Saturday), we are going to have actually quite a nice day. A weak ridge builds over the region. So we are going to have sun with temperatures getting up perhaps into the lower 60's and really a decent sunny day."

Mass sees a mix of sun, clouds and possibly a  shower on Sunday. The sun doesn't bring much warmth this time of year, unless it gets a little help.

"That help is coming up during the next few days," he says.

Read more
Weather with Cliff Mass
9:08 am
Fri October 7, 2011

Rain off and on, but without ‘nowcasting’ it's hard to pinpoint

Expect light rain off and on through out the weekend, but less of it on Saturday.
Aarthi Ramamurthy Flickr

Forecasters aren’t perfect, but we can be pretty sure of the rain falling this morning.

The cooler temps and heavier rain are a few weeks early, forecaster Cliff Mass told KPLU’s Keith Seinfeld, but the front dropping this rain will move through by mid-day today leaving Saturday mostly dry with rain returning that evening through Sunday morning.

But this could all be off by a few hours either way, because the official forecasters only publish every six hours. And those forecasts are used by nearly all the different weather Websites and news organizations.

Read more
Weather with Cliff Mass
9:13 am
Fri September 30, 2011

Weak fronts mean sun, but the coming strong front will bring clouds

When the sun is just coming up ... it's the coldest part of the day.
Trevin Chow Flickr

Weak weather fronts mean the sun should stick around through the weekend, with temperatures in the lower 70s and mid-60s and some occasional light showers. Then, a stronger front moves in late Sunday that will seal our fate for next week – at least when it comes to no sun.  

“The pattern of the atmosphere is shifting,” Cliff Mass told KPLU’s Keith Seinfeld, “so we are going from a ridge-like pattern to a trough-like pattern, which means that for much of next week we are going to be stuck in a cloudy, wet situation with highs getting up to only around 60.”

Read more
Weather with Cliff Mass
9:18 am
Fri September 23, 2011

Feels like the East Coast … but we’ll go back to NW weather soon

An example of the scope of vision the new coastal radar north of Hoquiam allows, showing a band of precipitation offshore that is slamming into Vancouver Island. "Pretty impressive," Cliff Mass said.

It’s the first day of fall, but you can’t trust the calendar to tell us what kind of weather we’ll be having. … So, we turn to Cliff Mass and KPLU’s Keith Seinfeld to give it to us straight.

First, it’s the water vapor in the air covering us like a blanket that will keep us warm and humid today and tomorrow. But it all changes again on Monday. And with a new radar station coming online on the coast, Mass says we’ll be able to see our future weather much more clearly.

Read more
Weather with Cliff Mass
9:08 am
Fri September 16, 2011

Back to wet, cool and possibly a winter similar to the last

Here they come - the return of the fall and winter clouds.
Lattiboy KPLU

That's it – nine days of summer. The nine days of over 80 degree temperatures in September look like the best we'll get this year.

“Looking at the maps, the large scale maps over the hemisphere, things have really changed. We’ve gone from a summer-type pattern to a much more winter-like pattern," Cliff Mass told KPLU's Keith Seinfeld in this morning's weather report. "The Jet stream is really strengthening and the storm systems are moving south. “

Read more
Weather with Cliff Mass
9:20 am
Fri September 9, 2011

The heat will stay on, possibly becoming warmest September ever

This graphic from Cliff Mass' blog shows the wild temperature ride we've been on this month.

We’ve got one more weekend of great hot weather before we begin to see temperatures more normal for September, says Cliff Mass, KPLU’s weather commentator and University of Washington Professor of Atmospheric Sciences.

Look for temperatures to be in the lower 80s today with another five to seven degrees higher on Saturday. Sunday will peak at nearly 90. If these temperatures hold out through Monday, we could set a record for number of days in September that have reached or exceeded 80. The record is eight days.

Read more
Weather report
9:48 am
Tue September 6, 2011

Washington: 80s in the west, 90s in the east ... where's hottest?

The National Weather Service and KPLU commentator Cliff Mass say the great weekend weather and temperatures are going to continue through the week, at least.
Erin Hennessey KPLU

The National Weather Service says Washington is in for one of the hottest stretches of summer this week.

Read more

Pages