Reposted by Chris MacphersonNahel Belgherze @wxnb.bsky.social · 24/09/2026Unbelievable footage from NOAA’s Hurricane Hunters inside the eye of Category 5 Hurricane Polo. Simply incredible. 521592531
Reposted by Chris MacphersonZeke Hausfather @zekehausfather.com · 22/09/2026I have a new piece out in Nature today on the record-breaking 2026/2027 El Niño, what impacts we should expect, and how governments can prepare. The Niño3.4 region is currently running more than 1C hotter than any prior event on record, and we remain months away from the peak www.nature.com/artic... 5238131
Reposted by Chris MacphersonZack Labe @zacklabe.com · 09/09/2026Honestly, it's already getting hard to keep up with all of the new climate data records. And I only expect this to amplify later this year. Climate change is still the key story. You just experienced the warmest summer on record across the contiguous United States. Data at doi.org/10.7289/V5SX... 21497196
Reposted by Chris MacphersonZeke Hausfather @zekehausfather.com · 24/07/20262026 is on track to be the warmest (~35% chance) or second warmest (~63%) year on record, while 2027 is very likely (92% chance) to be the warmest on record on the back of a growing super El Niño event. For more, check out my new Carbon Brief State of the Climate Q2 update: www.carbonbrief.org/... 7312161
Reposted by Chris MacphersonZeke Hausfather @zekehausfather.com · 13/07/2026With all the July model runs now in, it is very likely that 2026 will see the largest El Niño event since records began in the late 1800s – and potentially by a truly mind-blowing margin. The median estimate is now 3.6C, roughly 0.8C hotter than the prior record (2.75C). www.theclimatebrink.... 16514344
Reposted by Chris Macphersoncira-csu.bsky.social @cira-csu.bsky.social · 10/07/2026Noctilucent clouds shimmer high above the Arctic. 06312
Reposted by Chris MacphersonClimatologist49 @climatologist49.bsky.social · 01/05/2026The last 6 months, Nov-Apr, represent the driest Nov-Apr period since 1980-81 for the Contiguous U.S. and the 7th driest since 1895-96. There are large areas that experienced the driest Nov-Apr on record (red colors). Much of the Great Lakes region had their wettest Nov-Apr on record. 🌵 56529
Reposted by Chris MacphersonIPBES @ipbes.net · 08/04/2026Business uptake of biodiversity disclosure is limited. While biodiversity and nature underpin the 🌍 global economy, the latest IPBES #BizBiodiversity Assessment reveals that less than 1 per cent of publicly reporting companies mention their impacts on biodiversity. 🧪🏡 bit.ly/IPBES12Media 01713
Reposted by Chris MacphersonPhilippe Papin @pppapin.bsky.social · 16/08/2025Okay sharing one more loop, this one from @cyclonicwx.bsky.social zoomed in visible 1-min meso over Category 5 #Hurricane #Erin. Thanks to the 500 meter resolution of GOES-19 channel 2, you can still see features like the stadium effect & mesovortices rotating around the tiny eye. 🌀 🤯 110022
Reposted by Chris MacphersonMike Dettinger @mdettinger.bsky.social · 09/04/2025Yep, re: "won't catch up". cw3e.ucsd.edu/odds-of-norm... 0168
Reposted by Chris Macphersoncira-csu.bsky.social @cira-csu.bsky.social · 08/04/2025The planet Earth as seen from GOES-19’s first full day as GOES-East. 14510
Reposted by Chris MacphersonDaniel Swain @weatherwest.bsky.social · 19/03/2025To be clear: this would mean the *increment* of the increase in 2024 is itself the largest on record (in addition the value being the highest on record, which unfortunately happens essentially every year in our rapid warming era). That's...not great (as Glen discusses downthread). 28430
Reposted by Chris MacphersonTomer Burg @burgwx.bsky.social · 28/02/2025Thinking of the many hard-working and skilled federal employees fired today from the NWS. Your contributions over the years have helped the NWS and its ability to fulfill its mission of protecting life & property. This is a loss for the NWS and for the nation. 618842
Reposted by Chris MacphersonClimatologist49 @climatologist49.bsky.social · 27/02/2025Zack is a top-tier climate scientist and data visualization wizard. This did not need to happen. 1028658
Chris Macpherson @cmacpherson.bsky.social · 28/02/2025I’m so sorry, please let me know if we can do anything. It was your Twitter account that I came across almost 10 years ago that inspired me to go back to school and study climate science. 000
Chris Macpherson @cmacpherson.bsky.social · 23/01/2025I can’t wait until these Santa Ana winds are over. Let’s get to the weekend and get some rain in SoCal. 010
Chris Macpherson @cmacpherson.bsky.social · 21/01/2025Do you have 70mph + <10% relative humidity + no rain in 8 months at your house? 210
Reposted by Chris MacphersonDr. Jessie Christiansen @aussiastronomer.bsky.social · 17/01/2025Oh come ON now. This new JWST image is just ASTOUNDING. I feel like I’m falling looking into it, and that I would fall forever, and that I would enjoy it. NASA, ESA, CSA, K. McQuinn (STScI), J. DePasquale (STScI) 582485698
Reposted by Chris MacphersonMike Brown @plutokiller.com · 17/01/2025Just had a sample of the Eaton Fire ash that is in my driveway run on the department XRF. Is there titanium (new house paint)? Yup. Lead (old house paint)? You betcha. Heavy metals? Check. Treat that ash like it's toxic folks (because it is) 11546782049
Chris Macpherson @cmacpherson.bsky.social · 16/01/2025UGH. "Our weather pattern for next week features a deep trough of low pressure covering most of the nation`s interior with high pressure over the Pacific. That puts SoCal in northerly offshore flow seemingly forever." forecast.weather.gov/product.php?...forecast.weather.govNational Weather Service 000
Reposted by Chris MacphersonKate Marvel @drkatemarvel.bsky.social · 14/01/2025physics of climate impacts 101: - Stuff gets hot (worse heatwaves) - Hot air holds more water vapor (heavier rainfall) - Hot air is thirstier air (higher drought risk) - Warm water is hurricane food (stronger storms) - Hot water expands and hot ice melts (sea level rise) 30498982275
Reposted by Chris MacphersonGavin Schmidt @climateofgavin.bsky.social · 10/01/2025All surface temperature products for 2024 are now live. All show 2024 is the warmest year (very clearly). The estimates of the change since the pre-industrial (1850-1900) are more uncertain but range from 1.46 to 1.62ºC. It is therefore *likely* this was the first year that exceeded 1.5ºC. 21509239
Reposted by Chris MacphersonAl Chen @icancallubetty.bsky.social · 10/01/2025Although first responders were successful in keeping the fire from JPL, over 150 JPLers have lost their homes. Here’s link to the Caltech/JPL disaster relief fund if you’re so inclined: caltech.imodules.com/controls/ema... Thanks for your support of our JPL family.caltech.imodules.comSatellite imagery captured by MAXAR showing the extent of the Eaton Fire in North Pasadena and Altadena. 23423
Reposted by Chris MacphersonDaniel Swain @weatherwest.bsky.social · 10/01/2025Here's a schematic I published in this 2021 piece to illustrate how even a modest delay in onset of rainy season in Southern California can dramatically amplify wildfire risk by lengthening seasonal overlap between dry vegetation and strong offshore winds during Oct-Jan. #CAfire 4428167
Reposted by Chris MacphersonClimatologist49 @climatologist49.bsky.social · 10/01/2025Today is the date where the Contiguous U.S. has reached the midpoint of winter. Of course this is an average and varies quite a bit from west to east. 🥳 47715
Reposted by Chris MacphersonBrian McNoldy @bmcnoldy.bsky.social · 12/12/2024Every state in the contiguous U.S. is touched by drought now. Some entire states are in some degree of drought, including Florida. 510739
Reposted by Chris MacphersonZack Labe @zacklabe.com · 05/12/2024As a reminder, land areas (where we live) are warming around twice as fast as the oceans. Subsequently, most of us are 'experiencing' temperatures rising faster than the global mean record. Data from NASA GISTEMPv4: data.giss.nasa.gov/gistemp/ ⚒️🧪 923587
Chris Macpherson @cmacpherson.bsky.social · 05/12/2024That’s a good combo to study, best of luck on your studies! 010
Chris Macpherson @cmacpherson.bsky.social · 05/12/2024Landed in Salt Lake City for work - holy AQI. 010
Chris Macpherson @cmacpherson.bsky.social · 24/11/2024media.tenor.coma man wearing a watch is covering his mouthALT: a man wearing a watch is covering his mouth 010
Reposted by Chris MacphersonPascal Polonik @pascalpolonik.bsky.social · 22/11/2024This is from February of this year. And from what I’ve read it’s gotten worse since then. We’re in the purple. Sources below. 111
Chris Macpherson @cmacpherson.bsky.social · 21/11/2024Really important to stress the non-linearity of the climate system. 020
Reposted by Chris MacphersonErik Creighton @ecreightonwx.bsky.social · 20/11/2024However many times this was on your feed today, it wasn’t enough. Absolute perfection. 540192
Reposted by Chris MacphersonDakota Smith @weatherdak.bsky.social · 19/11/2024Gonna wait till we get the full view for the animated view but there's something cooking off the Pacific Northwest Coast. 👀 28017