Dr. Daniel Swain (@weather_west) 's Twitter Profile
Dr. Daniel Swain

@weather_west

Climate scientist-communicator focused on extreme events like floods, droughts, & wildfires on a warming planet.

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linkhttp://www.weatherwest.com calendar_today11-11-2013 07:41:56

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Rich Thompson (@richimet) 's Twitter Profile Photo

As a NWS Forecaster for 30+ years, I can, without question, state that our office (and every NWS office) does not have old computers with green screens. It's a disgrace that the leader of the Department of Commerce has this idea about the NWS.

NWS Amarillo (@nwsamarillo) 's Twitter Profile Photo

We are currently having technical difficulties preventing our warnings from sending out properly. There appears to be a regional or national outage, & we are working to diagnose & resolve the issue as soon as possible. Please continue checking back for updates in the meantime.

Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

In case you missed it yesterday: this "double-header" session--focused on both recent federal developments re: #weather, #climate, & #disaster response--plus the (alarming) fire season outlook for Western U.S. & Canada--was recorded & is available at link below. #CAfire #CAwater

NOAA Research (@noaaresearch) 's Twitter Profile Photo

JUST IN: Atmospheric carbon dioxide (CO2) concentrations have peaked for the year at 430.5 ppm.📈 This is 3.6 ppm higher than last year and the second largest May-May increase in the 67-year Mauna Loa record. In 2023, the CO2 peaked at 424 ppm. 🔗: gml.noaa.gov/ccgg/trends/

JUST IN: Atmospheric carbon dioxide (CO2) concentrations have peaked for the year at 430.5 ppm.📈
This is 3.6 ppm higher than last year and the second largest May-May increase in the 67-year Mauna Loa record. In 2023, the CO2 peaked at 424 ppm.
🔗: gml.noaa.gov/ccgg/trends/
Andrew Freedman (@afreedma) 's Twitter Profile Photo

NASA scientists describe ‘absolute shitshow’ at NASA GISS as the Trump admin. seeks to eliminate the storied lab as an "independent entity" in favor of a broader, as-yet fuzzily-defined Earth modeling effort. cnn.com/2025/06/05/cli…

Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

There are rumors swirling regarding potential for an extreme heatwave in Southern California & broader Southwest in mid-Jun. Why? Some recent operational (single-member) runs of a specific weather model have indeed indicated extreme/record heat in that window. HOWEVER... #CAwx

There are rumors swirling regarding potential for an extreme heatwave in Southern California & broader Southwest in mid-Jun. Why? Some recent operational (single-member) runs of a specific weather model have indeed indicated extreme/record heat in that window. HOWEVER... #CAwx
Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

HOWEVER...for now, these single-iteration predictive model runs remain substantial outliers in broader distribution of mid-Jun predictions from full ensemble! There may well be major heat on horizon, but for now record heat remains only modest possibility (but stay tuned!). #CAwx

HOWEVER...for now, these single-iteration predictive model runs remain substantial outliers in broader distribution of mid-Jun predictions from full ensemble! There may well be major heat on horizon, but for now record heat remains only modest possibility (but stay tuned!). #CAwx
Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

Meanwhile, in shorter term, there is much higher confidence in a major heatwave across the Pacific Northwest interior and Great Basin (extending into interior NorCal) next week (Jun ~8-10). A significant uptick in fire activity is possible during this period. #CAwx #ORwx #WAwx

Meanwhile, in shorter term, there is much higher confidence in a major heatwave across the Pacific Northwest interior and Great Basin (extending into interior NorCal) next week (Jun ~8-10). A significant uptick in fire activity is possible during this period. #CAwx #ORwx #WAwx
Kyle Brittain (@badweatherkyle) 's Twitter Profile Photo

Area burned by wildfires in Canada in 2025 has already SURPASSED the average we typically see in an entire year. We average about 2.1 million hectares per year, but have already eclipsed 2.6 million hectares. And it's only early June. 🇨🇦🔥

Area burned by wildfires in Canada in 2025 has already SURPASSED the average we typically see in an entire year.

We average about 2.1 million hectares per year, but have already eclipsed 2.6 million hectares.

And it's only early June. 🇨🇦🔥
Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

For some perspective, the federal government funds *over half* of all scientific research and development conducted by the University of California -- and UC is collectively responsible, in turn, for over 8% of all academic research conducted in the United States. cnn.com/2025/06/06/pol…

For some perspective, the federal government funds *over half* of all scientific research and development conducted by the <a href="/UofCalifornia/">University of California</a> -- and UC is collectively responsible, in turn, for over 8% of all academic research conducted in the United States. cnn.com/2025/06/06/pol…
Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

Active thunderstorm day in Sierra, w/unstable air combining w/bit of atmospheric lift from weak offshore low. These cells are moving almost due west, making it closer to Central Valley (where sprinkles are possible) vs usual & may even bring "nice sunset" clouds to Bay Area.#CAwx

NWS Seattle (@nwsseattle) 's Twitter Profile Photo

🌡️A hot one out there today! Records for the day: SEA broke it's record high for the day at 90° (old rec of 87° in 2015, 1948). SEA also broke its record high min temp today at 61°, which broke the old rec of 60° in 1948. BLI tied its record high of 82° (set in 1955.) #wawx

Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

I've long said that this team of remarkable communicators (& their amazing blogs, which were accessible but did not "dumb down" science!) was NOAA's best & most cost effective public-facing weather/climate education effort. This is a huge loss. theguardian.com/us-news/2025/j…

Dr. Daniel Swain (@weather_west) 's Twitter Profile Photo

On Thu, Jun 12 @ 2pm PT, I'll be hosting a special live YouTube session on diverse microclimates & geography of Greater Los Angeles. Expect a Google Earth tour! Also, I'll discuss weather forecast for outdoor activities on Saturday. #CAwx #CAfire #CAwater youtube.com/live/HkOmM-Kqi…