Daniel Swain

Yeah.

It's truly an honor to be on the 2025 Time Magazine #TIME100Next list! I wanted to take a moment to briefly reflect on what the recognition means to me personally, and also on the broader importance of supporting those who are doing their very best to provide constructive context surrounding global Climate Scientist Daniel Swain reflects on "TIME100 Next" recognition

It's truly an honor to be on the 2025 Time Magazine #TIME100Next list! I took a moment to reflect on what this recognition means to me personally & also on importance of offering nuanced context in a moment of widespread misinformation & societal upheaval.

Alas.

🎉 UC ANR’s Daniel Swain @weatherwest.bsky.social joins the 2025 #TIME100Next, spotlighting 100 rising leaders worldwide. A climate scientist & communicator, Swain studies droughts, floods & wildfires—& makes complex science accessible to the public & policymakers.
More here: bit.ly/4nXePlk

It's truly an honor to be on the 2025 Time Magazine #TIME100Next list! I wanted to take a moment to briefly reflect on what the recognition means to me personally, and also on the broader importance of supporting those who are doing their very best to provide constructive context surrounding global Climate Scientist Daniel Swain reflects on "TIME100 Next" recognition

It's truly an honor to be on the 2025 Time Magazine #TIME100Next list! I took a moment to reflect on what this recognition means to me personally & also on importance of offering nuanced context in a moment of widespread misinformation & societal upheaval.

After Trump cut the National Science Foundation by 56 percent, a venerable Arctic research center closes its doors The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives.

"After nearly 40 years, the Arctic Research Consortium of the United States, or ARCUS, will close September 30."

"The Arctic Research Consortium of the United States funded programs that aided Indigenous communities and tracked melting sea ice, among dozens of initiatives."

As the climate warms, one of the most obvious effects is an increase in the types of weather and weather-related extremes with which we're already familiar in a given place or context. But as warming continues, the shifting climate also brings about the possibility of certain types of extremes--like #ClimateChange is increasing familiar #weather extremes, but also expanding range of what's possible

#Climate change is increasing the likelihood and severity of extreme #weather types that already occur--bringing about a more intense variation on a familiar theme. But it is also expanding the range of what's possible in new locations around the world...

As the planet approaches 1.5°C (2.7°F) of #GlobalWarming, we've already begun to experience historically unprecedented heatwaves, downpours, and other types of disruptive, destructive, and deadly extreme weather events. While extreme weather has certainly occurred in the past, modern civilization is #ClimateChange is already "unearthing" historically unprecedented extreme events, with more to come

As we approach 1.5°C of #GlobalWarming, we've already begun to experience historically unprecedented heatwaves, downpours, & other types of disruptive, destructive, & deadly extreme events--and there will be more to come on a path toward continued warming.

Map from NOAA Coral Reef Watch depicting sea surface temperatures across the NE Pacific Ocean. Along the CA coast and far to the west, they are depicted as being far warmer than average.

W/likely persistence of highly anomalously warm nearshore & offshore ocean surface temperatures in NE Pacific for at least another couple of weeks, days & esp nights will continue to be mild in places w/coastal influence & any inbound storms may have more moisture vs usual. #CAwx

This, in combination w/recent rainfall, will tamp down still-active PacNW wildfires & also further mitigate NorCal fire season. In some, but not all, places in far NorCal and PacNW, this will probably be "fire season-ending." Little/no rain expected south of SF Bay. #CAwx #CAfire

Map depicting predicted precipitation from ECMWF ensemble over next 10 days. It shows moderate precipitation accumulation over most of the PacNW and northern CA, with light precipitation southward to near the SF Bay region.

GFS ensemble prediction of surface temperature anomalies over the next 5 days. They will be slightly cooler than average across most of California, though warmer than average along the immediate coast and offshore as well as across the interior West.

A substantial autumn pattern shift will unfold this week, especially across the Pacific Northwest and northern CA. Multiple episodes of light to locally moderate rainfall and cooler temperatures, associated with modest fronts, will occur over the next 10 days. [1/2] #CAwx #CAfire

Map from NOAA Coral Reef Watch depicting sea surface temperatures across the NE Pacific Ocean. Along the CA coast and far to the west, they are depicted as being far warmer than average.

W/likely persistence of highly anomalously warm nearshore & offshore ocean surface temperatures in NE Pacific for at least another couple of weeks, days & esp nights will continue to be mild in places w/coastal influence & any inbound storms may have more moisture vs usual. #CAwx

This, in combination w/recent rainfall, will tamp down still-active PacNW wildfires & also further mitigate NorCal fire season. In some, but not all, places in far NorCal and PacNW, this will probably be "fire season-ending." Little/no rain expected south of SF Bay. #CAwx #CAfire

Map depicting predicted precipitation from ECMWF ensemble over next 10 days. It shows moderate precipitation accumulation over most of the PacNW and northern CA, with light precipitation southward to near the SF Bay region.

GFS ensemble prediction of surface temperature anomalies over the next 5 days. They will be slightly cooler than average across most of California, though warmer than average along the immediate coast and offshore as well as across the interior West.

A substantial autumn pattern shift will unfold this week, especially across the Pacific Northwest and northern CA. Multiple episodes of light to locally moderate rainfall and cooler temperatures, associated with modest fronts, will occur over the next 10 days. [1/2] #CAwx #CAfire

YouTube video by Weather West Weather & climate office hour 9/23/2025: Another burst of humid heat and then thunderstorms in CA!

Hi Marthine,
You might be interested in my last YouTube livestream (recorded, as always, and now available) in which I take a deep dive into the recent (quite) unusual recent combination of humid, hot, humid, and even rainy/stormy conditions in California. youtu.be/tO-o9zEVeDk

Share Climate Extremes with your friends and followers! Learn about extreme weather, climate adaptation, and planetary behavior from leading global scientists! Click the "share" button above for sharing options! Subtitles include: English, French, Italian, German, Spanish, Portuguese, Turkis Climate Extremes: Extreme Weather (Full Documentary)

The full documentary Climate Extremes: Extreme Weather is now out on YouTube:

As the planet approaches 1.5°C (2.7°F) of #GlobalWarming, we've already begun to experience historically unprecedented heatwaves, downpours, and other types of disruptive, destructive, and deadly extreme weather events. While extreme weather has certainly occurred in the past, modern civilization is #ClimateChange is already "unearthing" historically unprecedented extreme events, with more to come

As we approach 1.5°C of #GlobalWarming, we've already begun to experience historically unprecedented heatwaves, downpours, & other types of disruptive, destructive, & deadly extreme events--and there will be more to come on a path toward continued warming.

No worries! I did not interpret it that way; I just think it's helpful context for helping folks understand why I make the decision to remain engaged across a wide range of social media platforms (including some regarding which I have considerable personal reservations) to reach a broad audience.

It has honestly become very difficult to follow the various problems with specific platforms these days; none are perfect, and most far from it. I'm doing the best I can to reach large audiences, given the background context of...everything!

Share Climate Extremes with your friends and followers! Learn about extreme weather, climate adaptation, and planetary behavior from leading global scientists! Click the "share" button above for sharing options! Subtitles include: English, French, Italian, German, Spanish, Portuguese, Turkis Climate Extremes: Extreme Weather (Full Documentary)

The full documentary Climate Extremes: Extreme Weather is now out on YouTube:

As the climate warms, one of the most obvious effects is an increase in the types of weather and weather-related extremes with which we're already familiar in a given place or context. But as warming continues, the shifting climate also brings about the possibility of certain types of extremes--like #ClimateChange is increasing familiar #weather extremes, but also expanding range of what's possible

#Climate change is increasing the likelihood and severity of extreme #weather types that already occur--bringing about a more intense variation on a familiar theme. But it is also expanding the range of what's possible in new locations around the world...

I am issuing an (un)official "cool cloud watching day" advisory for much of central & southern California, including the SF Bay Area by this evening. With mid-level instability, deep tropical moisture, a hot airmass, and offshore low pressure system all in place--things might get interesting. #CAwx

When extreme weather strikes, thousands turn to @weatherwest.bsky.social. 🌩️ Daniel Swain, climate scientist and prolific communicator, makes complex #science clear for the public.

Meet him in this year’s #Grist50 list: grist.org/fix/grist-50...

#Weather #Disaster #Climate #Floods #Hurricane

As extreme weather events increase in intensity and frequency in a warming climate, there will sometimes be events that so severe that they overwhelm our collective capacity to respond. Some such events have already occurred in recent years, especially in the case of local to regional-scale catastro In a warming #climate with increasingly unmanageable extremes, there will be difficult decisions

As many types of extreme weather (and extreme weather-related) events become more intense and occur more frequently in a warming #climate, it is already forcing increasingly difficult decisions about how to mitigate increasingly unmanageable risks.

Snapshot depicting total column water vapor from the ECMWF model. Over coastal central and southern California, the amount of water vapor is extremely high and tropical-like--very unusual for this part of the world.

An offshore low will combine with a copious tropical moisture in presence of modest (but sufficient instability) some thunderstorms. These will initially be offshore, but will likely move inland along Central Coast (though are possible from LA to SF Bay Area and inland). #CAwx

Snapshot from ECMWF model depicting the 500mb geopotential height anomalies for tomorrow. It clearly shows a low pressure system near the CA coast amid a sea of otherwise higher-than-average GPH (i.e., an isolated low pressure system within a broader ridge/warm pattern).

Another round of very unusual September weather still on tap for much of CA this week. Another burst of (increasingly humid) heat peaks tomorrow before afternoon/evening clouds increase and a possibly widespread Central Coast thunderstorm outbreak develops late PM into Wed! #CAwx

Weather & climate office hour 9/23/2025: Another burst of humid heat and then thunderstorms in CA! - YouTube The latest in a recurring series of live, virtual, & interactive "office hours" hosted by Dr. Daniel Swain on various topics related to extreme weather and c...

I'll have a livestream on Tue, Sep 23 @ 5pm PT to discuss the latest burst of unusual humid September heat--and potential for another (also quite unusual) widespread thunderstorm outbreak along the Central Coast. Expect a live radar & satellite tour! #CAwx

I'm so sorry to hear that you lost your home, but I'm also glad you were able to preserve more than you would have been able to otherwise. It was a terrible event for so many folks...

Share Climate Extremes with your friends and followers! Learn about extreme weather, climate adaptation, and planetary behavior from leading global scientists! Click the "share" button above for sharing options! Subtitles include: English, French, Italian, German, Spanish, Portuguese, Turkis Climate Extremes: Extreme Weather (Full Documentary)

The full documentary Climate Extremes: Extreme Weather is now out on YouTube:

As extreme weather events increase in intensity and frequency in a warming climate, there will sometimes be events that so severe that they overwhelm our collective capacity to respond. Some such events have already occurred in recent years, especially in the case of local to regional-scale catastro In a warming #climate with increasingly unmanageable extremes, there will be difficult decisions

As many types of extreme weather (and extreme weather-related) events become more intense and occur more frequently in a warming #climate, it is already forcing increasingly difficult decisions about how to mitigate increasingly unmanageable risks.