Solar magnetic activity cycle (#HaleCycle) researcher; ex-NASA GSFC, ex-NASA HQ IPA; 3x IM finisher; color commentator on Emmy-winning eclipse broadcast; Welsh.
Washington, DC
Joined June 2019
- Tweets2K
- Following230
- Followers573
- Likes4K
Pinned Tweet
“The solar corona is going to look very cool today. Cooler than it did last time…!” (And I mean cool in the sense of “wow!”)
We won an Emmy!
Our live broadcast coverage of the 2024 total solar eclipse received this year's Emmy Award for Outstanding Live News Special. Get the details: go.nasa.gov/4k9jIpa
3
756
Pretty cool infographic. (Illinois and Nevada not withstanding…)
The states that cut the carbon intensity of their power the most since the early 90s:
Iowa -69%
South Dakota -69%
Nevada -64%
Oklahoma -62%
New Mexico -61%
A few unexpected #CleanEnergyStripes
2
77
Neither count thou eleven, excepting that thou then proceed to twelve… or something like that.
My favorite Atlantic hurricane season statistic
On average, we see the "L" named storm before the "K" named storm.
climatlas.com/tropical/names…
3
324
I have never seen an NFL game in person, but I can now say I’ve been seen other sports in three stadia where NFL games have been played. The other two (Philly’s Vet for the Army-Navy game and DC’s shared RFK for a Nats’ baseball game) are now razed…
82
RIP Dolly. Thank you for the music! The best of which transcends genres...
youtu.be/doz1QJ7LwjA?si=ffHT…
89
“You ever wonder why they call it that? El Niño. It starts with something so small and so insignificant: An anchovy…”
The Morning Show. Still the best description of El Niño I have seen.
youtu.be/bSQXKXU-Mew
193
IAD-DEN. Via Cleveland is an unusual route, I thought. Must be weather somewhere. Indeed. Somewhere near Vinton, Iowa @united @NWSWPC
1150 AM CDT update from @NWSSPC : Numerous severe thunderstorms are expected from the mid Mississippi/lower Ohio Valleys into the Mid-South through this evening, with a threat for multiple strong to intense tornadoes (EF3+), widespread severe/damaging wind gusts, and scattered large to very large hail.
158
Most devastating takedown since… Buster Douglas v Mike Tyson 1990? Germany v Brazil 2014? Richard III at Bosworth Field? Harold Godwinson at Hastings? (Bayeux Tapestry segment was chef’s kiss, @SquidgeRugby!)
Like many things, Brexit didn’t help, but could have been handled…
In 2019, Wales were the number one rugby team in the world. Five years later, they were on an 18-match, 2-year losing streak with no hope in sight. This is the story of how negligence, incompetence, and austerity tore apart one of rugby's proudest nations-
youtu.be/SGEvOQws_g8?si=dtdK…
2
317
Space flight and weather in one gif!
It's a bird...It's a plane...It's the Artemis II crew on their way to the moon! #ArtemisII
1
108
More locations around DC than just the Tidal Basin to admire Peak Bloom Cherry Blossoms… National Basilica (does someone have an @ beyond @CatholicUniv ?) @capitalweather
1
119
Skittles and beer!
It’s the Spring Equinox—astronomical spring begins today. Meteorological spring started March 1.
Learn why they’re different: ncei.noaa.gov/news/meteorolo…
How do YOU mark spring?
ALT Graphic titled “Spring Equinox — March 20, 2026 at 10:46 AM ET.” Side-by-side images of Earth compare the spring equinox (left, March) and summer solstice (right, June). A dashed line marks the equator on both images, illustrating how Earth’s tilt changes the distribution of sunlight between the two dates. NOAA logo included.
1
78
The answer to @NASAEarth ‘s question is Llanfairpwll (etc), but ringed at top is Benllech, birthplace of William Jones, who in 1706 was the first to use the Greek letter π to represent the ratio of the circumference of a circle to its diameter! V. Useful to all of NASA!
This satellite image shows a place on our planet. Can you tell where it is? (Hint: It’s a long name!)
Bonus points if you can tell us what this location has to do with NASA.
We’ll share the answer at 1pm ET.
ALT Satellite image of an unspecified area. A thin blue waterway runs across the land, connecting two larger bodies of water on either side of it. There are several patches of gray urban areas, especially along the waterway. Much of the land is covered in green farmland. The bottom right corner of the image is covered by light green and tan mountains.
127
Easter Sunday (Apr 5) at the Tidal Basin is going to be insane! 🌸🌸🌸🌸🌸
I concur with the @capitalweather forecast - based on my statistical model* I get Apr 6, but given that the forecast for next week is almost 80F, a few days earlier is more than possible. See you there!
🌸 D.C.’s cherry blossoms may take their time this year.
After the chilliest winter in more than two decades, the trees are just beginning to wake up. Warm weather this week should kick-start development, but cooler conditions later in March may slow the progression toward peak bloom.
📅 Our forecast: April 3–7 for peak bloom at the Tidal Basin.
That would be the latest since 2018 and notably later than last year’s March 28 peak.
Over the past century, peak bloom has shifted about a week earlier on average because of climate warming — but this year looks like a throwback to a later bloom.
1
1
199
Looking forward to the official @NationalMallNPS #BloomWatch forecast to be released tomorrow, Thursday March 5!
1
31
Fascinating graph. How much electricity different European countries generate, versus how much CO2 they emit doing it... National Psyches!? Or how they live? Given the relative populations of France and Poland, say, the French must also consume ~1.5x the GWh as the Poles!
Un de mes graphes préférés est arrivé pour 2025! Chaque point est une heure de production d’un pays: en abscisse la production, en ordonnée son intensité carbone. Chaque pays a une couleur différente. Bravo la France (en bleu)! Merci Thomas’s projects. bit.ly/45uDkiY
1
136
Nods sagely
Latest ECMWF seasonal is also onboard with the idea of a full-scale El Niño developing by summer. The precipitation and pressure patterns depicted here suggest a fully coupled event, with increased precip across the equatorial Pacific and reduced precip and anomalous high pressure across the Atlantic. Verbatim, this look (coupled with the warmer Atlantic subtropics) would suggest a rather quiet 2026 Atlantic hurricane season. We'll see how things evolve in the coming months.
1
127