Alex Thompson, PhD
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ajtclimate.bsky.social
Alex Thompson, PhD
@ajtclimate.bsky.social
Research Scientist studying extreme precipitation | CIRES - CU Boulder | NOAA Affiliate - Physical Sciences Laboratory | PhD 2021 - University of Michigan
-"So, like, remember that crazy St. Louis flood back in July 2022? TBH, it was wild. Everyone was saying it was a “1-in-1,000-year” event. Can’t even imagine dealing with that. But hold up, fam. Turns out, maybe it wasn’t that extra."
May 9, 2025 at 5:17 PM
-"It’s not just random chance, fam. Climate change is the ultimate puppeteer, pulling the strings on our weather patterns, and the results are, well, not cute."
May 9, 2025 at 5:17 PM
Here are some of my favorite highlights:

-"The data’s just not thicc enough."

-"If we’re building for a “1-in-1,000-year” storm when it could be more frequent, that’s a major vibe check fail."

-"Sparse data is a major vibe kill."
May 9, 2025 at 5:17 PM
I love this synopsis of our paper 😆
February 10, 2025 at 5:53 PM
The paper can be found here: journals.ametsoc.org/view/journal...
journals.ametsoc.org
February 10, 2025 at 5:45 PM
Finally, this project from my postdoc facilitated a pivot in terms of my research interests that culminated in me landing my current job at CIRES/CU Boulder working with NOAA PSL on high-resolution modeling for modernizing estimates of probable maximum precipitation! (end)
February 10, 2025 at 5:04 PM
This new approach also included enough historical and modern/future data to estimate that the rainfall amount from this extreme event is about 2-4 times more likely to occur now and in the future compared to the preceding ~1,000 years. (5/6)
February 10, 2025 at 5:04 PM
This new “blended dataset” allowed me to refine the estimate of the storm’s rainfall over St. Louis and Kentucky to a ~1-in-530-year and ~1-in-280-year event, respectively, and reduced the uncertainty bars in this calculation by ~24-94% (4/6)
February 10, 2025 at 5:04 PM
I sought to improve the assessment of this storm by developing a new method that combined over a century of rainfall observations from dozens of rain gauges with 1,250 years of climate model simulations spanning 850 to 2100 CE, thus greatly lengthening the data record. (3/6)
February 10, 2025 at 5:04 PM
This event was declared a 1-in-1,000-year event and caused quite a stir in the media, but a deeper look into the historical rainfall data revealed HUGE uncertainty bars on making such a declaration - mainly because it was made using only a few decades of observations (2/6)
February 10, 2025 at 5:04 PM
Let me know if you'd like to see the same report for a different location
January 16, 2025 at 11:56 PM
December 15, 2023 at 3:53 PM