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Interesting timing of the release of this new study since we could at least see our first monthly global temperatures near +2°C. https://www.nature.com/articles/s41586-026-10237-9 nature articles article Article Open access Published: 25 March 2026 Moderate global warming does not rule out extreme global climate outcomes Effectively communicating worst-case projections of global future climate—hereinafter referred to as worst-case climate outcomes—is essential for risk assessment and developing robust adaptation strategies to global warming1,2,3,4,5,6,7. Yet, current approaches for identifying spatially consistent climate outcomes are limited, with worst-case global climates typically communicated via the average of climate model projections at high global warming levels, such as 3 °C or 4 °C above the preindustrial era8,9. Here we show that extreme global climate outcomes may occur even under moderate 2 °C warming for several sectors. For droughts in global key breadbasket regions, precipitation extremes over highly populated areas and fire weather extremes across forests, global climatic impact-drivers at 2 °C of global warming may turn out to be much more extreme than model-averaged projections at 3 °C or 4 °C warming. We derive these results by identifying sector-specific, spatially consistent potential high- and low-impact global climate outcomes through spatially averaging projected sector-relevant climatic impact-drivers across key global regions. Our approach can easily be adapted to a wide range of sectors to support the improvement of sector-specific climate risk assessment and to inform climate policy. As global warming approaches 1.5 °C (ref. 10), these findings underscore the urgency of rapid mitigation to limit warming well below 2 °C, as even a 2 °C world may entail severe impacts.

Not around here but what a monster storm Polo turned into and insanely fast

Wait, in the desert?

Oof, yeah that would be a problem.

Frederick, MoCo, Loudoun, Fairfax, DC bullseye on 3k NAM. A lot more to go. Hrrr quite a bit drier but still respectable.

Whereas historical stats certainly agree that La Niña is quite possible in ‘27-‘28, that same history says that there’s actually a decent chance for either neutral or, believe it or not, even El Niño in ‘27-‘28. Here’s why: El Niños peaking at +1.4+ occurred in the following 19 fall/winters and were followed by these: +1.4+ Nino: subsequent fall/winter ENSO 1877-8: cold neutral 1888-9: strong Nina 1896-7: cold neutral 1899-1900: warm neutral 1902-3: moderate Nina 1905-6: weak Nina 1918-9: weak Nino 1930-1: cold neutral 1940-1: moderate Nino 1957-8: weak Nino 1965-6: cold neutral 1972-3: strong Nina 1982-3: moderate Nina 1986-7: moderate Nino 1991-2: weak Nino 1997-8: strong Nina 2009-10: strong Nina 2015-6: moderate Nina 2023-4: moderate Nina ————————— So, these 19 +1.4+ El Niños were followed by these: Strong Niña: 4 (21%) Moderate Nina: 4 (21%) Weak Nina: 1 (5%) Cold neutral: 4 (21%) Warm neutral: 1 (5%) Weak Nino: 3 (16%) Moderate Nino: 2 (11%) ————————— Tally: 47% Nina 26% neutral 26% El Nino ——————— Conclusion: La Nina is the best single possibility for ‘27-‘28 due to its large plurality (being at 47%), but neutral or even El Niño are obviously each quite possible as the two of them, combined, actually have ~same chance as La Nina. https://www.webberweather.com/ensemble-oceanic-nino-index.html https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso/roni/

That’s funny you posted that. In between bands it definitely seemed more mixed.

I posted this in the other thread but these soundings off the Euro are certainly problematic.

In this case you want to be on the north and northwest side of this storm. it’s way different than Sandy which was moving WNW and had a high to the east causing strong SE flow.

Pretty well mixed in the boundary layer. This would be problematic for sure.

I've struggled up to .07" total for the event.

Thats a bigtime impressive damager pike South

Can look at it on Weathernerds. It’s labeled GFM and then the one that has been superior is called weathernext. It’s labeled as GDMWNV3

If the Euro and others are right about the track, there could be some serious coastal erosion.

I think there is also some potential this could become a deeper storm than what is being advertised now, especially given it starts warm core and how it may take its time transitioning to more of a cold core. Another factor in this too is how the upper-level wind field evolves. At least on the Euro, look at how the structure of the ULJ evolves...that is very favorable for enhanced diffluence aloft which would further factor into the strengthening of the storm and wind fields. Lots of interesting processes will be undergoing with this thing. Sexy science at work

What do you have against miserable weekends?

Polo's eye has warmed dramatically. Also, lightning data has erupted with a distinctive ring that we find on the most intense eyewalls. Also, recon is en route.

Yeah, as we get into high-res range, we may see some big totals forecasted. A more organized system meandering west with dynamic bands could create some serious localized flash flood issues.

I started a thread for posterity. This looks like it's going to be pretty impactful.

Yeah we can't ignore the rainfall aspect of this. This is a setup in which models (even the more aggressive models) could underplay rainfall totals. As impressive as the Euro is with rainfall totals, it could still be underdone (taking verbatim). That is a continuous fetch of moisture off the Atlantic and the system takes its sweet time occluding. There could be a swath of some substantial rainfall totals.

2026 Atlantic Season to date: Pretty feeble. Nothing much is likely to change before the end of the month. We'll tack on another tenth or two of ACE before Fay gives up the ghost. The lack of a hurricane this season looks like a lock to continue for balance of September. Will be up to October / November to produce a hurricane.

Definitely agree that we need to take the earlier seasons with a grain of salt because the technology wasn't as good. For 2005, we can say for certainty that the ACE value was between 245 and 250. [In 2024, I did a calculation on this season, and it came out to be 247.65, which is #1] 1933 has a wider variance, between 213 and 258. [In the same 2024 calculation, I got 235.785, which is #2]. I actually think the 258 value from NOAA is an overestimate. Here are the Top 11 ACE seasons from my 2024 calculations: 1 2005 247.65 2 1933 235.785 3 1893 231.0738 4 1995 227.5513 5 1950 227.1413 6 2004 226.94 7 1926 225.7788 8 2017 224.8775 9 1961 196.95 10 1998 181.8838 11 2020 180.3725 As for 1914, the mid-September storm was the biggest one for that season (that was almost Hurricane strength). I believe they did a reanalysis in 2005 (oddly enough, the most active season), and they couldn't find anything more. There might have been another one or two more storms, but I'm almost certain none were as big as the mid-September storm.

It’s not so far-fetched when you consider a much weaker event in 1982-1983 lingered into June and July 1983.