An extraordinary meteorological event; was one of its results a 1000-year flood?

By: Stu Ostro, 18:01 GMT le 05 octobre 2015

Image credit: NASA Earth Science Office

A remarkable combination of a deep cutoff low aloft, an old front and a new one developing with a non-tropical surface low, a potent low-level jet, very strong ridging aloft and surface high pressure to the north, and extra moisture/fetch contributed by Hurricane Joaquin (whose steering was affected by a system that was associated with the remnant of Ida), resulted in an extraordinary convective band, extreme rainfa...

Flood Hurricane Nor'Easter Climate Change

Updated: 19:32 GMT le 06 octobre 2015

Not a tropical cyclone?

By: Stu Ostro, 16:59 GMT le 15 août 2015

This isn't the first time I've written about this.  In fact, it's the fourth: 2009, 2011, 2013, and now again in 2015.

The latest episode(s) ...


On the morning of Monday, July 27, the more I looked at the thing that was in the northeastern Gulf of Mexico, the more it seemed the circulation was that of a low pressure system with tropical characteristics.  I was going to tweet that it was a "tropical low."


Updated: 03:01 GMT le 18 août 2015

Meteorological analysis of flight diverted by hail damage

By: Stu Ostro, 19:56 GMT le 08 août 2015

Thank goodness everyone was safe!

Source: Twitter, Beau Sorensen

Upon seeing the result of that flight from Boston to Salt Lake City which was diverted to Denver last night (Friday, August 7) because of hail damage, I investigated further, having been a meteorologist on many flights in which I thought, "They're going to fly through THAT??"  This case seemed different, in that Beau (tweet above) was quoted as referring to flying between...

Meteorological images of the year - 2014

By: Stu Ostro, 23:58 GMT le 30 décembre 2014

Previous years:


And now, my 9th annual edition of a selection of most compelling meteorological images of the year.  These can't capture every significant weather event or striking image, and by nature there is subjectivity involved, but they're meant to at least represent many of the highlights of the year based on the material I am aware of and the time I have available, via applying b...

Hurricane Tornado Volcano Blizzard Winter Weather Flood Drought Climate Change Photos

Updated: 15:47 GMT le 31 décembre 2014

Tropical Terminology

By: Stu Ostro, 01:47 GMT le 30 juin 2014

With a system swirling offshore of the southeast U.S. and trying to become the first official numbered tropical depression or named tropical storm of the year in the Atlantic, even if it doesn't it reminds us that we're in hurricane season, and here is some basic, fundamental terminology related to tropical cyclones.

Rather than a comprehensive and/or technical glossary (there's one in that vein on the National Hurricane Center site), this represents the esse...


Updated: 02:52 GMT le 30 juin 2014

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About stuostro

Proud to be a weather-obsessed weather geek! \m/ Senior meteorologist at The Weather Channel. If not a meteorologist, would be a DJ ♫

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