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Stephen Mullens

@srmullens.bsky.social

1.5K followers 440 following 1.5K posts

Instructional Professor of Meteorology working to spin up a MET program at U Florida. I ask smart people dumb questions. #radar #tropics #summer

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Stephen Mullens @srmullens.bsky.social · Feb 28

Mourn-scrolling: When the world absolutely used to be better, the lives of your friends and so many others were altered in the process, and you feel helpless.

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Stephen Mullens @srmullens.bsky.social · 3d

Such a pretty Rossby wave picking up Hurricane Melissa.

Reposted by Stephen Mullens

Michael Lowry @michaelrlowry.bsky.social · 6d

Melissa was a Category 5 hurricane for 36 consecutive hours. Only 4 other hurricanes in the satellite record – Irma (2017), Ivan (2004), Mitch (1998), and David 1979 – lasted as long as a Category 5 hurricane. Typically Cat 5s last about 18 hours before weakening.

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Stephen Mullens @srmullens.bsky.social · 6d

I’ve been there and done the same.

Reposted by Stephen Mullens

Sam Lillo @samlillo.bsky.social · 6d

Just my routine plea not to compare a hurricane to the EF scale. Please.

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Stephen Mullens @srmullens.bsky.social · 6d

The hurricane's more impactful right side is hitting the most well-constructed part of the country. This may keep the fatality rate, which will surely be high, lower than otherwise. But it will also mean recovery will require international help.

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Stephen Mullens @srmullens.bsky.social · 6d

NHC official position update, with an updated central pressure as well.

Stephen Mullens @srmullens.bsky.social · 7d

Stationary.

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Stephen Mullens @srmullens.bsky.social · 7d

Bsky, as I saw it, got so branded as “Democrats are going there” that it became a place of “big politics takes” rather than a neutral mix of topics, including science. Less science discussion for the sake of science. So I’ve avoided it more than I did Twitter. Not a like for like replacement.

Stephen Mullens @srmullens.bsky.social · 7d

If your students launch a weather balloon on Saturday, you are free to use the data for a homework assignment on Monday. Those are the rules. 🤣

Stephen Mullens @srmullens.bsky.social · 8d

The AMS Gator Chapter launched their 4th weather balloon last night from Gainesville. Balloon made it to 11.8hPa and 30,001ft. Maybe next time we’ll top the club 3.76hPa record. Proud faculty advisor.

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Stephen Mullens @srmullens.bsky.social · 11d

Gonna be a long season if every OKC game is 2 overtimes.

Stephen Mullens @srmullens.bsky.social · 13d

The circle forecast.

Reposted by Stephen Mullens

Jenny Chase @solarchase.bsky.social · 15d

Time for 2025 updates to my annual “opinions about solar” thread. If you like these, you might like the second edition of my book, Solar Power Finance Without The Jargon. A 30% discount code WSQ0437 is valid on publisher website until end of November 2025.

www.worldscientific.com/worldscibook...

Solar Power Finance Without the Jargon

www.worldscientific.com

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Stephen Mullens @srmullens.bsky.social · 20d

Just an 85kt subgeostrophic wind off the California coast.

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Reposted by Stephen Mullens

UF Geography @ufgeog.bsky.social · 22d

JOB - The Department of Geography at the University of Florida invites applications for a full-time, 12-month, non-tenure track Lecturer/Assistant Instructional Professor position in GIScience and Geographic Artificial Intelligence (GeoAI) explore.jobs.ufl.edu/en-us/job/53...

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Stephen Mullens @srmullens.bsky.social · 26d

Is the Atlantic season ACE ahead of average, about average, or behind average? A study in choosing what historical period to compare to, also known as lying with statistics to support what you want.

Stephen Mullens @srmullens.bsky.social · 28d

Would like a history book with a good section on the expansion of surface observations in the 1800s in North America and Europe. Anyone know of one?

Stephen Mullens @srmullens.bsky.social · Oct 1

Last week, I was trying to figure out how close TCs had to get for Fujiwara to take place and ran across this image. I'm glad you made your plot to help put this plot in context, though. (Seems 500mi is a rough guide, but will depend on context.)

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Stephen Mullens @srmullens.bsky.social · Oct 1

Why don’t we have a horror movie that takes place in a Spirit Halloween? 🎃🦇

Stephen Mullens @srmullens.bsky.social · Sep 30

Oh, I know about training data. Suffice it to say that for now the HAFS still has something to say that AI doesn't for intensity.

Stephen Mullens @srmullens.bsky.social · Sep 29

So, if AI models are good at track, but physics models are good at intensity, are we going to see a meld at some point?

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Stephen Mullens @srmullens.bsky.social · Sep 28

At least as far as effective landfalls go, Imelda is only the third landfalling storm this year following Barry and Chantel. And it will turn out that not all I-storms are big baddies.

Stephen Mullens @srmullens.bsky.social · Sep 26

Looks like I may have gotten the invest wrong. 94L. oops.

Stephen Mullens @srmullens.bsky.social · Sep 26

In this solution, the TC doesn't strengthen because the shear is displacing the rain to the north. But the divergence in that area keeps that convective area strong as the storm approaches the coast.

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Stephen Mullens @srmullens.bsky.social · Sep 26

This divergence is a result of both changes in jet curvature east of the trough (sub to super-geostrophic wind) and from the wind accelerating into the jet streak (4-quadrant model). In fact, this seems to be a situation where the jet streak is the greater influence of the two.

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