Absolutely insane what s going on in USA: Monthly records pulverized by hundreds in over a dozen States with unbelievable margins: For example Salt Lake City UT Minimum of 59F is SEVEN degrees F higher than the previous monthly record. Thousands of records coming next days...

The classic mountain rains of Christmas are forecast to move in.

Friday from the American Meteorological Society concerning the government announcement of the closing of the National Center for Atmospheric Research (NCAR):

This tree just came down on Pine St just west of Folsom St in Boulder. Winds already gusting to 100+ mph at NCAR Mesa Lab.

Among the Christmas Day record highs to be set if current NWS local forecasts for 12/25 pan out: —Albuquerque NM: 66F (current record 63 in 1955) —Wichita KS: 69F (current record 68 in 2019) —Oklahoma City OK: 76F (current record 73 in 2016) —Wichita Falls TX: 82F (current record 78 in 2016)

"A Democratic senator involved in the negotiations...said that Trump’s attempt to break up a premier weather and climate center based in Boulder, Colo., was like a “stick of dynamite” that exploded any chance of a bipartisan breakthrough on spending." thehill.com/homenews/sen...

This is the first "Particularly Dangerous Situation" Fire Weather Warning ever issued anywhere in the state of Colorado. #COwx

Join us for a critical conversation on the future of U.S. atmospheric science. UCAR President Antonio Busalacchi hosts this town hall on what’s at stake if NSF NCAR is dismantled. buff.ly/jR6tGwo

Here we go again. Another push of strong winds, and fire danger will probably be a bit higher tomorrow compared to even yesterday. Tomorrow's winds will be notably drier than yesterday's. Trust me, I'm sick of the wind too. It'll improve this weekend. #COwx

100K+ customers in CO Front Range lost power Thurs from high winds + proactive shutdowns. More wind T/C. “Friday’s high winds may overlap with some communities impacted by today’s weather event, which means certain areas may be without power for more than three days.” boulderodm.gov/update-from-...

Psst: Notice where this wind/weather data is coming from. It's coming from NCAR. One tiny blip of the kajillion things NCAR does to improve/advance weather forecasting. #COwx

One of the important differences on the Front Range between December 2021 and today is the dryness that allowed for the Marshall Fire to take off. 30-day SPEI was extreme in 2021, while snow 2 weeks ago left fuels in a less receptive state. PSPS and lessons learned in 2021 likely helping out too.

The NSF statement on NCAR closure aligns closely with the White House announcement from last night, first reported by USA TODAY. Note the complete absence of the word "climate." www.nsf.gov/news/intent-...

@bhensonweather.bsky.social spent most of his career working at NCAR. He writes, "Working at NCAR and UCAR was an enormous privilege and one of the great joys of my life. I gained a humbling appreciation for the intricacy of the atmosphere." yaleclimateconnections.org/2025/12/trum...

Folks on Washington state community Facebook groups are arguing about whether images of local flood damage are real or not. Generative AI is making it so much harder for people to get the reliable information they need to make decisions during disasters.

This has been a striking, and strikingly persistent, pattern for much of December: sharp cold toward the Midwest and Northeast, and unusual warmth from the Rockies westward. (But not in central California, where unusually chilly air and "tule fog" have been in place for days).

For the sixth time in sixth months, global temps have come in just behind the record-smashing pace of 2023 + 2024. And that's w/La Niña conditions in place, which tend to bring down global temps slightly. An update from @drjeffmasters.bsky.social: yaleclimateconnections.org/2025/12/3rd-...

The NWS flood warning message has a slightly higher record flood for the Skagit near Concrete - 45.7’ in late 1917 - but this would still top it by a couple of feet. There’s a good collection of stories about floods on the Skagit below; #s 2-6 are the 1917 flood. skagitcounty.net/Departments/...

The end of coal in California ⬇️

2025 in a weather nutshell...National Weather Service posts a forecast. The person replies with what weather Apps say....:)

What a terrible way to end the drought. Almost as bad as ending it with 0.1”.

Official data is in this week, and US solar continues to grow rapidly, with generation up 30% compared to last year!

Another great read from @scrawford.bsky.social: "We can’t rely on the insurance industry to be the only risk-signaler for homes. These companies may be tracking hurricanes and wildfires, and translating those risks into higher premiums, but they are likely to exclude saltwater intrusion coverage."

Amazing that Voyager 1 is still communicating with earth, having been launched in 1977! It takes nearly a day for a radio command to reach the spacecraft and almost another day for the response to reach an earth receiver.

Impressive Bureau of Meteorology radar loop of Severe Tropical Cyclone Fina, which BOM estimates has sustained winds of ~130 mph, I.e. major hurricane intensity. It is forecast by BOM to weaken slightly as it approaches the northeast Kimberley coast over the next 24 hours.

The amount of solar-power capacity installed by China in Q1/Q2 2025 alone (256 gigawatts, ~ roughly 200 big coal plants) matches *all* the cumulative U.S. solar-power capacity installed thru Q2 2025 (260 gigawatts). We are watching the world leap past us. ember-energy.org/latest-updat...

Pound for pound, this heat dome is every bit as impressive (or more) as the cold snap. Even more records. But since the temps are comfortable, it won’t make much news.

#AT40 "To be specific...you never done it like that." Actually, this isn't very specific at all. "It"? "That"?

Goods stuff here. We really need to be talking about this topic more. I obviously talk a lot about climate change issues. But this subsidence problem (for Houston & many other places) is also a very, very big deal -- *especially* when compounded by climate change issues.

My latest post has a table of the most expensive hurricanes to affect each nation/territory/island in the Atlantic relative to GDP. Over 30 nations have suffered a storm costing more than 5% of GDP, and 13 have seen losses of at least 100% of GDP. yaleclimateconnections.org/2025/11/the-...

Tonight’s stupendous aurora-fest as seen in Louisville CO. As always, the phone camera makes these far more vivid than they actually looked to the naked eye. Still plenty bright—the most colorful I’ve seen anywhere, anytime.

Absolutely magical and stunning view of the Northern Lights from my front lawn tonight in the northern suburbs of Chicago. Science. The best.

Major "cannibal CME" solar storm under way tonight & Wednesday. NOAA is predicting severe geomagnetic storm conditions (G4) thru Wed AM. Look up, and north! www.swpc.noaa.gov/communities/...

Despite the lack of a planet-warming El Niño event this year, 2025 has been the 2nd-warmest year on record for the year-to-date period, and is on track to end up as the 2nd- or 3rd-warmest year on record, behind only the El Niño-warmed years of 2024 and 2023:

Storm Prediction Center discussion about the anticipated southwest drift of heavy lake effect snow band over Lake Michigan to impact Chicago metro area during the early morning hours. www.spc.noaa.gov/products/md/...

Here's a look at the extent of the "warmth" across the #Arctic in October. This map uses my normal anomaly scaling for each month, but it clearly doesn't work for something this extreme. Data from doi.org/10.24381/cds...

Typhoon FUNG-WONG is heading to the Philippines as the equivalent of a major Atlantic hurricane. What’s really stands out is its immense eye. At one point today its eye spanned ~70 miles - about the distance from Tampa to Orlando. Picture an eye like that spanning the state!… 1/

Hurricane Harvey's peak storm total rainfall was about 60 inches. Vietnam just saw this total and threw in an extra 8 inches of rain - and in one day??

November 6: #Fung-wong is very quickly organizing as it heads towards the Philippines. This could be a very powerful typhoon as it heads through the archipelago. Parts of the Philippines are still in early stages of recovery following catastrophic flooding from #Kalmaegi.

Antarctica October temperature time series.

Birds flying above hurricanes? Damaged hospital posing as the actual one? Welcome to the phony world of AI-assisted weather disaster images. @climateconnections.bsky.social yaleclimateconnections.org/2025/11/imag...

Hottest November day on record in Denver - 83° for a high: 🌡️ Breaks daily (78°) and monthly (81°) temp records 🌡️ Latest 83° on record in Denver (prev: Oct. 29) 🌡️ Go Broncos #COwx

The final act of the Hurricane #Melissa 10-day rampage will be tonight in southeastern Newfoundland, bringing an end to the historic hurricane's impacts. yaleclimateconnections.org/2025/10/hurr...

Today's #Melissa post covers the slew of remarkable records the hurricane set. And look at the calendar when thinking about these records: Melissa hit on October 28, seven weeks past the traditional peak of hurricane season, at a time when less than 10% of an average season’s activity occurs!

Remember when social media was a useful tool for assessing damage post-disaster, instead of having to fish through fake photos made with AI garbage? That was nice.

Here's now a map view of the warming of the Caribbean during the months of September to November. While there are many environmental factors that impact hurricane intensity, this warming certainly plays a role in fueling that rapid intensification. More views at zacklabe.com/united-state... 🌊

Not since 1935 has anyone experienced a storm like Melissa. Melissa's record wouldn't have happened without climate change, which made the hurricane's winds about 10 mph stronger, according to a rapid attribution analysis by Climate Central. yaleclimateconnections.org/2025/10/cata...

Wow. This is easily the most ridiculous dropsonde I’ve ever seen. 188 knot mean winds in the low-levels with gusts over 250 mph Absolutely scary and historic hurricane headed into SW Jamaica this morning

This meso loop of #Melissa from CIRA is absolutely stunning at it makes its closes in on landfall in southwestern Jamaica. rammb-data.cira.colostate.edu/tc_realtime/... #hurricanemelissa

Update #4: By the metric of observed maximum flight level winds at 700 mb, 10-sec average, preliminary data suggests that #Melissa is now the TOP Atlantic hurricane in the modern era of aircraft reconnaissance (since ~1977).