Cover art for podcast Weather with Cliff Mass

Weather with Cliff Mass

70 EpisodesProduced by Cliff MassWebsite

Atmospheric scientist Cliff Mass provides a weekly weather forecast for the Pacific Northwest, details current and future weather topics, and discusses related topics. Podcast is released every Friday at 9am. Support this podcast and ensure it remains ad-free on Patreon! https://www.patreon.com/clif… read more

70 Episodes | 2020 - 2022

The Double-Edged Sword of High Pressure. And the Weekend Forecast

January 21st, 2022

11:16

This weekend will be dominated by high pressure over the Northwest.  But such high pressure can produce both cool/foggy conditions and brilliant sum …

The Dry Period Ahead. Why is Mid-January Drying Typical in the Region?

January 14th, 2022

6:58

The forecast for this weekend should be a relief to everyone--mostly dry for most of Washington and Oregon.  In fact, a trend to drier conditions is …

Snow, Flooding, Freezing Rain and More. The Forecast and What Determines The Type of Precipitation We Receive?

January 7th, 2022

10:16

During the past week we have been hit by rain, snow, and freezing rain.  Strong warm fronts and cold fronts. Flooding and record-breaking snow.

I …

Warming Conditions with Potential Snow. Plus, The Colorado Wildfire

December 31st, 2021

8:54

This podcast describes the warming situation this weekend and the potential for snow from Monday morning to Tuesday.  And I examine the causes of the …

La Nina is Starting to Influence Our Weather, Plus a Snowy Forecast for the Mountains

December 17th, 2021

10:48

We are at the time that La Nina starts influencing the weather of our region....and this podcast provides the details.  Interestingly, La Nina may well have influenced the Kentucky tornado outbreak of last week as well.

How can we make climate predictions when we can’t forecast weather next week? Plus, a very snowy forecast for the mountains.

December 10th, 2021

11:58

I am often asked: How can we predict the climate in fifty to 100 years when we can’t provide skillful weather forecasts more than a week or two into …

The Upcoming Snow Event and the Meteorological "Trick" for Westside Snow

December 3rd, 2021

13:45

A major weather change will occur over the next few days, with cooling temperatures, large snowfalls in the mountains, and even some snow reaching …

Roadway Icing Threat and the Latest (Dry) Forecast

November 19th, 2021

11:47

My podcast today talks about the biggest meteorological threat faced by Northwest residents....roadway icing.  Sometimes called "black ice."  And I …

The Origin of Northwest Flooding and a Very Wet Forecast for the Next Few Days

November 12th, 2021

11:44

The source of nearly all billion-dollar disasters in the Northwest is flooding.  This podcast will provide you with the essential story about …

La Nina is Revving Up, What Does it Mean? And Upcoming Snow in the Mountains.

November 5th, 2021

10:49

This podcast begins with the forecast, which includes lots of precipitation, increasing snow in the mountains, and a potential windstorm on Tuesday.  In the second segment, I talk about the rapidly intensifying La Nina …

Why are there atmospheric rivers? And the important Halloween forecast!

October 29th, 2021

11:11

During the past weeks, two major atmospheric rivers have hit the West Coast with heavy rainfall.  What are atmospheric rivers and WHY do they form?    This podcast will provide the answer.   And I will start the podcast …

The Great Storms of the Northwest and a Very Difficult Forecast

October 22nd, 2021

13:54

The Pacific Northwest can experience great storms, as significant as category 3 hurricanes, and this blog will tell you about them.  And I will …

The Columbus Day Storm--the Strongest Northwest Storm Ever-- and the Latest Forecast

October 15th, 2021

10:29

This week brought the anniversary of the great 1962 Columbus Day Storm, the most severe weather event in Northwest history.  I will talk about the …

The Facts about Humidity. And the Latest Forecast

October 8th, 2021

12:40

Moisture matters, both due to comfort and the effects on the atmosphere.   In the media, you hear about relative humidity and dew point temperature. …

Northwest Extreme Rainshadows, A Whale Cloud, and the Weekend Forecast

October 1st, 2021

12:03

The Pacific Northwest has some of the most extreme rainshadows in the world--I will tell their story in the podcast.  Plus, I will talk about the "whale cloud" that is offshore right now, and provide you with the …

Weather Signs in the Sky and a Wet Week Ahead

September 24th, 2021

10:07

Can you tell the weather ahead by observing our local mountains?  You bet.  One potent sign of inclement weather is the development of cloud "caps" over the local mountains.  In my podcast, I will explain how this …

Why are Northwest Summers So Dry? And the Latest on the the Heavy Rain Event.

September 17th, 2021

12:38

The Northwest has some of the driest summers in the nation.  Why?   You will learn the answer in this podcast.   

And then there is the major precipitation event today and this weekend.....I will give you the details, …

Real Rain Is Coming and the Story of the Jet Stream

September 10th, 2021

11:27

We are about to experience a real change in our weather, including significant rain and much cooler temperatures.  I will give you the latest …

Why doesn't the Northwest Get Tropical Storms and Hurricanes? And the Labor Day Weekend Forecast!

September 3rd, 2021

10:23

The southeast U.S. and the East Coast can experience tropical storms and hurricanes.....but not here in the Pacific Northwest.  Why?  This podcast explains.   I also provide the latest weekend forecast, which includes …

The Dangerous Wildfire Season over Western Washington and Oregon is Now, Plus the Forecast

August 27th, 2021

13:01

Virtually all major wildfires west of the Cascade crest occur from mid-August to mid-September.  But why?   I will explain in this podcast.  And I will tell you about some surprising findings regarding the effects of …

The Upcoming La Nina and the Weekend Forecast

August 20th, 2021

9:23

La Nina is coming and in this podcast, I will you all about it, including its implications for our summer weather.  And I will also describe the forecast, with near-normal temperature for the next few days.

The New UN Climate Report and the Weather Forecast for Next Week

August 13th, 2021

14:30

This podcast provides my take on the new IPCC climate report and the big changes in the weather we will experience during the next week.   The new climate report is actually quite optimistic about future climate change …

Cool/Wet to Heatwave This Week. Plus, Global Warming's Role in the June Heat Wave

August 6th, 2021

12:10

This podcast starts with a dramatically changing forecast, where we go from cool/wet conditions to another heatwave.  In the second, half I examine …

Major Weather Change Towards Cooler/Wetter Weather Ahead. Plus Northwest Thunderstorms 101

July 30th, 2021

12:20

Be ready for weather whiplash.  In western Washington over the next week, we will go from a minor heatwave to much cooler conditions and some light …

How Does Wildfire Smoke Move In the Atmosphere? Plus Weather Perfection

July 23rd, 2021

13:16

How does wildfire smoke move in the atmosphere?  Why does smoke sometimes travel thousands of miles and what controls whether wildfire smoke reaches …

Why are Northwest Midsummers so Dry? And a cool period ahead.

July 16th, 2021

11:25

We are now entering the driest period of the year climatologically.  Amazingly dry.  And in my podcast, I tell you why!   I also review the forecast …

Northwest Sea Breezes and The Potential Cool Down Ahead

July 9th, 2021

10:30

This is sea breeze season in the Pacific Northwest and my podcast will tell the story.  In fact, we have some of the strongest sea breezes in the country and they come in a wide variety of sizes and strengths.   My …

The Heat Wave and Global Warming. Plus the Forecast

July 2nd, 2021

12:51

There has been much speculation that the severe heatwave of the past week was the result of global warming.  The truth is that global warming played …

Extreme High Temperatures over Western Oregon and Washington. Why Will We Break All Time Records?

June 25th, 2021

8:13

My podcast describes the reasons behind the high temperature records expected on Sunday and Monday.

The Truth About High Temperature Records and the Weekend Forecast

June 18th, 2021

11:33

There has been a lot of talk about heat waves this week, and I wanted to provide some heat-wave 101 in this podcast.  Have we been breaking more high-temperature records during the past decades?  The answer may surprise …

Tropical Air, Atmospheric Rivers, and A Wet Period Ahead

June 11th, 2021

11:26

This podcast will start with the forecast, with a wet Sunday and Tuesday ahead.   We may even have record-breaking humid air on Sunday.  And in the second half, I will tell you about the cause:  a moist atmospheric …

The Most Important Weather Feature of Northwest Summers and A Wet Weekend Forecast

June 4th, 2021

12:02

What is the most important summer weather feature of the Pacific Northwest?  It is not thunderstorms like the rest of the country!  Instead, our big weather issue is the onshore or marine push.  You will learn about it …

The Numerical Weather Prediction Revolution and a Warm Memorial Day Weekend Forecast

May 28th, 2021

13:31

What is the key technology behind weather prediction?   How can computer "models" predict the weather days in advance?  You will learn about this in …

The History of Weather Prediction, Part II, and the Latest Forecast

May 21st, 2021

12:10

This podcast will continue the story of weather prediction, described the evolution of weather prediction from folk wisdom to the use of the …

A Perfect Weekend and the Fascinating History of Weather Forecasting

May 14th, 2021

10:30

Weather prediction is one of the great achievements of our species.  What is its history?  How did it develop?  Today's podcast will begin to tell you the story.  And I will provide the latest forecasts for our region, …

Why are there showers and sun breaks during the spring? And the Mother's Day weekend forecast.

May 7th, 2021

11:15

A signature aspect of Northwest weather is the occurrence of showers and sun breaks during the spring.  Why does this happen now?  You will learn the details during the podcast.  And I will also provide the Mother's Day …

How Far Into The Future Can We Predict the Weather. And the Weekend Forecast

April 30th, 2021

11:16

Many ask:   how far into the future can we predict the weather?   The answer is found in this podcast, and it is more nuanced than some might expect.  And I will also provide the weekend forecast.... one that is …

Weather Radar Explanation and A Major Shift in Northwest Weather

April 23rd, 2021

11:33

The weather is about to shift in a major way, from warm/dry conditions to cool and wet, and I will give you the details in this podcast.  I will also …

The Secrets of Northwest Heatwaves and the Warm Forecast for this Weekend

April 16th, 2021

11:20

What meteorological conditions lead to heatwaves in western Washington and Oregon?  This podcast will reveal the details!  And I will provide the …

From Freezing to Warmth. And An In-Depth Look at the Fading La Nina

April 9th, 2021

12:47

The next week will be one of great contrast for the Northwest.  We will go from MUCH cooler than normal temperatures over the weekend, with frost at …

Why are there contrails? And the weekend forecast

April 2nd, 2021

10:51

The sky is often covered by thin lines of ice clouds, known as contrails.  In my podcast, I will explain why they occur and what they tell you about the atmosphere above.  I will also discuss the climatic effects of …

Can You Humans Alter the Weather? And the Weekend Forecast.

March 26th, 2021

9:56

Do humans have the power to alter the weather?   I will answer this question in my podcast.  And I provide a weekend weather forecast for the region, including a strong front that will cross Washington State on Sunday …

Western Washington Has the Longest Springs in the Nation. Why? Plus the Weekend Forecast

March 19th, 2021

10:03

Western Washington and Oregon have the longest springs in the nation, extending to 4 months or more.  I explain why in this podcast.  And I will give the weekend forecast, which promises lots of snow in the mountains, …

Why are thunderstorms so wimpy over the Northwest? Plus, the weekend forecast!

March 12th, 2021

12:08

Western Washington and Oregon have fewer and weaker thunderstorms than much of the U.S.   In this podcast, I explain why.   And I provide the weekend …

Why U.S. Weather Prediction Is Lagging, Plus the Weekend Forecast

March 5th, 2021

13:12

In this podcast, I discuss a major issue:  U.S. global weather prediction is lagging the rest of the world.  Not only do I lay out the problem, but tell you why.   My podcast also provides the weekend forecast for the …

Weekend Forecast Plus Why is Texas Winter Weather So Extreme?

February 26th, 2021

10:47

In this podcast I start with the weekend weather forecast, which will be pretty benign because of the influence of a large ridge of high pressure over the eastern Pacific. Then I turn to the extreme weather of Texas, …

Super Rain Shadow and the Truth about the Texas Cold Wave

February 19th, 2021

14:28

In this segment I discuss the profound rain shadow that will occur this weekend, with heavy snow and rain in the mountains and relatively dry conditions over the Puget Sound lowlands and the eastern slopes of the …

Weekend Snow Forecast

February 12th, 2021

7:49

This podcast is about the expected snowfall this weekend, with the big event tonight and tomorrow (Saturday), with a look out into next week.

February Snow Event

February 10th, 2021

8:52

In this podcast I talk about the upcoming major snow event and some of the challenges in forecasting it.

Cold Air Coming to the Northwest and Is There A Pacific Data Void for Weather Information?

February 5th, 2021

13:44

I start with the forecast, with particular attention to the cold air that will push over the region this week.  Will it snow?  We will examine that. …

Weekend Forecast and Roadway Icing: The Most Dangerous Weather Phenomena of the Northwest

January 29th, 2021

11:24

This podcast starts with the weekend forecast, which includes several frontal passages,  showers, and moderate mountain snows. But then I turn to the most dangerous weather phenomenon of the region--  ice on the …

Upcoming Cold and Potential Snow, and Why Did Wednesday's Storm Forecast Go Wrong?

January 15th, 2021

11:15

We have some interesting weather ahead.  First most dry with plenty of sun.  But then the potential for MUCH colder temperatures and lowland snow …

Weekend Forecast Plus Where Does the Energy of Storms Come From?

January 8th, 2021

11:43

I start with the weekend forecast, including a dry Saturday, gusty downslope winds on the Cascades, a decent Sunday, and then the potential for a VERY wet period of Tuesday and Wednesday.   Then I answer a question …

New Year's Forecast and Why are There Wind Gusts?

January 1st, 2021

11:21

In this podcast, I will give you the windy forecast for this weekend and tell you about a powerful front that will cross our region on Saturday …

The Holiday Week Forecast and a Look at the Northeast Snowstorm

December 18th, 2020

11:37

The holiday week weather forecast is important and I will provide the details, including the outlook for this weekend, the dry spell midweek, and the …

Implications of La Nina for Our Winter and the Latest Forecast

December 11th, 2020

12:46

This winter will be characterized by a strong La Nina (cooler than normal waters in the tropical Pacific).  What does this mean for our winter's …

Why do Temperatures Sometime Warm with Height? Inversions Explained. Plus the Weekend Forecast!

December 4th, 2020

9:48

During the autumn, the Northwest is often visited by a strange condition:   temperatures WARMING with height.  These features are called inversions and this podcast will explain why they occur and how you can use …

Why is November the Stormiest Time of the Year? Plus the Forecast for the Next Week

November 27th, 2020

7:31

The middle to end of November is the stormiest time of the year.  Why?  My podcast today will explain?   And we have an interesting weather period …

Northwest's Big Windstorms and the Thanksgiving Day Forecast

November 20th, 2020

17:18

The Northwest can get big windstorms associated with Pacific cyclones, with the strongest equivalent to category 1 or 2 hurricanes in wind speed and damage potential.  In this blog, I will talk about our windstorms and …

Snowy Weekend in the Mountains and the Winter Forecast

November 13th, 2020

8:33

During the next few days there is going to be heavy snow in the mountains and breezy/wet conditions in the lowlands.  Normal for this time of the year.  The latest model forecasts suggest the potential for a major …

A Major Change in Our Weather and Where Can You Get the Best Weather Forecast?

November 6th, 2020

11:40

There has been, literally, a 180 degree change in our weather, with warm, moist southerly flow replaced by cool, drier air from the north.  Sixty …

Election Week Forecast and Why Do Hurricanes Avoid the Northwest?

October 30th, 2020

9:33

In this episode,  I give the important election week weather forecast--and I am not going to speculate on which party it will favor!   This week, …

Cold, Wind, and Snow this Weekend, Plus the Secret of Western Washington Snow Events

October 23rd, 2020

13:22

In this episode, I talk about the active weather we will experience this weekend, including strong winds, mountain and eastern WA snow, as well as …

The Revenge of the Blob and the Weekend Forecast

October 16th, 2020

10:25

After a blustery Friday, expect a cool weekend with some showers on Sunday morning.  But one thing has NOT been cool is the low temperatures we have …

Stormy Weather and the Remarkable Jet Stream

October 9th, 2020

8:41

The weather is about to change in a big way, and I will talk about heavy rain, wind, thunderstorms and mountain snows that will impact our region over the weekend and beyond.  And then I will turn to talking about the …

Why so much fog in fall?

October 2nd, 2020

9:17

I start with with forecast, noting our foggy mornings, and describe the dry period ahead.  And you will learn about the future of our smoke.  In the second segment I tell you why we are in the middle of the Northwest …

Heavy Rain and Atmospheric Rivers

September 25th, 2020

10:49

I start with the forecast, discussing an atmospheric river bringing heavy rain today, followed by drying over the weekend and the development of big …

The End of Smoke & Why is Smoke Forecasting So Hard?

September 18th, 2020

9:57

Let's jump right in to the current weather situation with your weekend forecast (expect major improvement in the smoke situation on Saturday). In my special segment I will describe how smoke forecasts are made and why …

Smoke and Fire

September 11th, 2020

9:12

This episode will talk about the smoke moving into the Puget Sound and potential for a major influx on Friday.  I will provide the weekend forecast and talk about rain coming in by Tuesday.  In my special segment, I …

Labor Day Forecast & the Looming Heatwave

September 4th, 2020

7:59

Going somewhere for Labor Day? Cliff provides a detailed holiday weekend forecast for the Western Washington and Seattle areas in the first segment. …

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