iiinova — where your digital self keeps evolving

Reposted by Deelan Jariwala

James Franklin @franklinjamesl.bsky.social · 10h

Been a lot of storms since I ran 2026 AL/EP/CP verifications in early September. Results haven't changed much: GDMI still beating all the guidance for track and slightly better than OFCL on D4-5. For intensity, HCCA best, followed by OFCL and GDMI. Reminder that ECMWF is not in public ATCF decks.

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Reposted by Deelan Jariwala

James Franklin @franklinjamesl.bsky.social · 06/09/2026

Took a quick look at how Google DeepMind (GDMI) is doing this year for the combined NWS basins AL/EP/CP. With the caveat that ECMWF is not in the data, GDMI for track blows everything else away, beating OFCL by 30% at 5 days! Nothing so dramatic for intensity, but still among the best guidance.

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Reposted by Deelan Jariwala

Dr. Larissa @rissarwx.bsky.social · 01/08/2026

Final full descent sounding for this go around. Balloon is going back up and we'll keep doing that loop as long as Dolphin will let us.

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Deelan Jariwala @wxtca.bsky.social · 12/06/2026

Half a million people watching a video who's title implies that NOAA/NHC/CSU are wrong about the hurricane season forecast is probably nothing

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Reposted by Deelan Jariwala

Michael Fischer @mikefischerwx.bsky.social · 02/06/2026

It's the first day of hurricane season in the Atlantic. TC-ATLAS now features a real-time monitoring page with geostationary and microwave satellite data, real-time surface observations, and objective model forecasts from Google DeepMind. michaelfischerwx.github.io/TC-ATLAS/rea...

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Deelan Jariwala @wxtca.bsky.social · 16/05/2026

I mostly lurk here (sorry, Twitter is much more entertaining to scroll + group chats), but I think this is a good platform to plug the webpage I had Claude put together to host a lot of the random projects I had lying around on my laptop: tcalert.github.io/cycloweb/

tcalert.github.io

CycloWeb

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Reposted by Deelan Jariwala

Michael Fischer @mikefischerwx.bsky.social · 27/03/2026

Interested in hurricanes? I want to introduce TC-ATLAS: the Tropical Cyclone Analysis Tool for Live and Archived Structure. Explore live or past storms without writing a line of code or downloading a data file, building on the capabilities of TC-RADAR: michaelfischerwx.github.io/TC-ATLAS/ind...

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Reposted by Deelan Jariwala

James Franklin @franklinjamesl.bsky.social · 31/10/2025

Here are updated verifications for 2025, AL/EP combined, EMXI not available. Impressed that NHC is beating everything, including consensus, for intensity, and everything but Google DeepMind (GDMI) for track. Rough year for GFS and the statistical intensity aids. Banner year for GDMI.

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James Franklin @franklinjamesl.bsky.social · 13/10/2025

With about 80% of the precincts reporting I've seen enough. GDMI - Google DeepMind is going to win the seat for best track model in 2025. The race for best intensity model is still too close to call, but GDMI is right there with the consensus and OFCL. Quite a remarkable campaign.

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Reposted by Deelan Jariwala

Philippe Papin @pppapin.bsky.social · 14/08/2025

Yesterday, #Podul moved over #Taiwan as a 95 kt #typhoon. A unique feature seen w/ TCs near Taiwan is a blowup of seemingly cold convection (<-80C) as core moves over the island. Turns out it's mostly thick cirrus w/o much sfc precip due to vertically propagating mountain waves. Diagnosed below⤵️

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Deelan Jariwala @wxtca.bsky.social · 14/08/2025

Further west ensemble members have stronger ridging over the eastern half of North America. However, members with stronger ridging in this region also tend to have a more intense system over the southwestern Atlantic! HAFS-A shows that this is a product of flow becoming more WNW with height.

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Reposted by Deelan Jariwala

Philippe Papin @pppapin.bsky.social · 10/08/2025

I'd like list a couple pet peeves of mine that regular folks & professional mets have done this #hurricane season that is poor form: (1) Naming storms before they are actually named. (2) Sharing deterministic model forecasts (including AI models) beyond 5-7 days. Allow me a mini-rant to explain:🧵

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Reposted by Deelan Jariwala

Philippe Papin @pppapin.bsky.social · 27/06/2025

😬 yeah unfortunately ATMS does not have enough horizontal res needed to resolve inner core features in TCs like #Erick. Nice TS Storms post by Naufal Razin shows footprint of SSMIS imagers on overall TC microwave coverage. Microwave coverage peaked in 2015, w/ SSMIS ~60% of current coverage data.

Average 24h microwave coverage of TCs since 1987 with SSMIS contribution in red

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Deelan Jariwala @wxtca.bsky.social · 28/04/2025

This is a pretty strange and uncalled-for reaction to someone making a valid point about that seasonal forecast! A statistical model, as described in Kozar et al. 2012 and used in the UPenn forecast, will tend to struggle when provided with data outside of its training dataset (I.E. extrapolation).

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Reposted by Deelan Jariwala

Paul Voosen @voosen.me · 11/04/2025

BREAKING from @science.org: The Trump admin is seeking to kill nearly all climate research at NOAA, its climate science agency. Its near-final budget proposal would end all NOAA research labs, academic institutes, and regional climate centers. And it wants to fully end the NOAA Research division.

science.org

Trump seeks to end climate research at premier U.S. climate agency

White House aims to end NOAA’s research office; NASA also targeted

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Deelan Jariwala @wxtca.bsky.social · 29/01/2025

Satellite loop of Hurricane Carmen (1974) rapidly intensifying over the Gulf of Mexico, as well as its landfall and decay over Louisiana. These pictures, taken by SMS-1, are some of the earliest examples of enhanced longwave infrared imagery that I know of.

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Reposted by Deelan Jariwala

Philippe Papin @pppapin.bsky.social · 23/12/2024

Original thread worthy of an update to show evolution of this low on IR from 19 to 22 December. An attempt at #tropical #transition was made, but as it shed frontal features, marginal SSTs prolonged length it took for organized deep convection to develop, & window was too short for classification.

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Deelan Jariwala @wxtca.bsky.social · 16/12/2024

Probably not likely to go anywhere interesting, but it’ll be interesting to watch one or more cut off lows in the central Atlantic over the next week as they meander over the subtropics south of strong ridging.

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Deelan Jariwala @wxtca.bsky.social · 15/12/2024

Hello from an alien drone over New Jersey

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Deelan Jariwala @wxtca.bsky.social · 07/12/2024

Pretty cool to see the change in the global circulation in response to the strengthening La Niña here on a longer-term VP200 hovmoller. Previously, the MJO signal was pretty robust and circuited the world every month or so. Recently though, it’s been parked over the Indian Ocean.

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Sang-Ki Lee @sklee621.bsky.social · 30/11/2024

Storm-resolving climate models project a 36% increase in the year-to-year variability of Atlantic hurricane activity by the 2050s 🌊🧪: ocean2climate.org/2024/11/30/s...

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Deelan Jariwala @wxtca.bsky.social · 28/11/2024

It's worth noting that the last 15 or so years have seen a marked decline in Atlantic ACE in the latter part of July and the bulk of August, contrasting with an increase in June and a larger rise in October. This is interesting to consider in the context of this year which saw a similar pattern.

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Deelan Jariwala @wxtca.bsky.social · 23/11/2024

Perhaps a long shot, but is there an archive anywhere online for VHRR data?

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Reposted by Deelan Jariwala

Anthony Masiello @antmasiello.bsky.social · 21/11/2024

The westerly wind burst earlier in the month was pretty strong and is worth a further dive into the data/better analysis. Quick glance at Reanalysis daily data in Nov, for the equatorial 850mb zonal wind anomaly at 120°W since 1950, shows it was the strongest since the 1997 and 1998 November events.

All daily 850mb zonal wind anomalies in November since 1950 in R1 for 0° and 120°W. Early 2024 was the strongest since 1997 and 1998.

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Deelan Jariwala @wxtca.bsky.social · 16/11/2024

Some cool imagery of Hurricane Carmen (1974) approaching its first peak in the Gulf of Honduras. The second and third image are from the VHRR instrument aboard some of NOAA’s early polar orbiting satellites — I had no idea this data existed with such high quality!!

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Deelan Jariwala @wxtca.bsky.social · 20/12/2023

Probably not something I’d post on Twitter, but it’s really funny that the long range GFS throws a TPV lobe into the U.S. and only manages to drop temperatures to near normal. The preceding airmass is just ridiculously warm for December.

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Deelan Jariwala @wxtca.bsky.social · 17/12/2023

Not necessarily on this platform, but there’s been a silly amount of cope regarding the prospects of a warm December elsewhere. It started out as denying the strength of the El Niño event, before transitioning over to denying the incoming jet extension as we got closer. Just plain weird.

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Deelan Jariwala @wxtca.bsky.social · 21/09/2023

Disheartening to see some anonymous scumbag on wxtwitter try to falsify awful screenshots of me. Don’t even know what I did to deserve that lol

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