Jim Tang

Radar and satellite map for a case on Chase Archive showing right-click menu with options to copy and save

Upper air map for a case on Chase Archive

A large update coming later today! These updates will be available for the 2025 cases for now, with older cases to follow. More historical data at your fingertips!
- Past upper air maps with all traditional levels and SFC from the case.
- Right click to save, no more screenshotting!

No big deal just radar/satellite loops on
@chasearchive.bsky.social
that will ultimately go back to the 1990s

Check it out!!
app.chasearchive.com?q=%5BYEAR%5D

@ameliaurquhart.bsky.social and @stormchasertang.bsky.social are the dream team

Chase Archive Logo Chase Archive Image showing camera and hand analysis by Marcus Reynolds Button saying "Soon... Very soon..."

@chasearchive.bsky.social is approaching at an alarming rate. It will be here soon... very soon.

Did you know that Case archive can see the future!
Big time case coming up this Saturday!
@cameronjnixon.bsky.social @aidanabwx.skyhighcreators.com @ameliaurquhart.bsky.social
@wxkylegillett.bsky.social
@stormchasertang.bsky.social
@landonwx.bsky.social
@strmchsrhunterf.bsky.social

My crankiest belief is that we are now being sold on solutions to problems which only exist because we've let others convince us they exist. That is what "innovation" seems to be in 2025.

There's a level of introspection that's just not happening these days re: what actually needs to bother us.

Very sad news. I learned more about severe local convective storms from Chuck Doswell than anyone else. He was a friend and mentor.

A snow day in Oklahoma.

Features of Adulthood xkcd.com/3034

Glaze is slippery. More later #kswx

Four photos I took in the closing days of 2024

I have a rough hypothesis that patterns favorable for plentiful California precipitation, Plains tornadoes, and I-95 snowstorms tend to cluster together over multiyear timescales. Occam's Razor says to look at the first EOF of NH 500mb variability: the NAO.

@stormchasertang.bsky.social and I found a tram

Ah, the classic squashed spider hodograph

REEEEEEEE

You guys crack me up

Few people even know about this; when people are asked in surveys how child mortality has changed the majority says it has stagnated or increased.

If you consider that many don't know about humanity's biggest achievement, then it's not surprising that many are so pessimistic about our future.

Damnit what

LiveDst: CU Space Weather Forecast A real-time machine-learning model to predict the geomagnetic disturbance storm time index (Dst) up to six hours ahead

Want the most sophisticated machine learning prediction of geomagnetic storming on the planet?

SWx TREC’s LiveDst model gives 1- and 6-hour forecasts of the geomagnetic Dst index with quantified uncertainty - a first in the space weather forecasting world!

swx-trec.com/dst/

Alaska is pretty cool

Benefits of an open network

While Bluesky looks like other social apps on the surface, it’s actually quite different. It’s an open network.

I blogged about it here:

Can confirm it does 😭

Just learned that the drive from San Fransisco to Seattle is only 12 hours and I regret not having taken that drive when I lived in California

I can't tell if this is accurate, and a reflection of the mass migration of the wx community, or just topics people who migrate to bsky tend to enjoy, or some influence of nominative determinism

Today’s chart: Weather forecasts have become much more accurate.

In the US a 4-day forecast is now as accurate as a 1-day forecast 30 years ago.

📌

so I think their mistake was that they identified (correctly!) that algorithmic timelines are good for Not Very Online People, who are the majority of people online, but Very Online People prefer non-algo TLs and, crucially, they're the ones doing most of the posting, and they bring people with them

Yup, it's happening (finally) for the more populated areas

The 72-hr difference is even greater.

big rainfall vs. not so big rainfall

Some intense precip gradients across the San Francisco Bay Area. Between San Rafael and Richmond (a 20-min drive across a bridge) the 48hr rain totals go from 7" to 0.7".

Rain shadowed areas near/east of Mt. Diablo and in the Santa Clara Valley have generally received < a tenth of a inch.

Tornado Archive - The Ultimate Tornado Data Viewer! A comprehensive tornado visualization database!

Hello from the Tornado Archive team, Bluesky! Tornado Archive is a website dedicated to worldwide tornado history, climatology, and data visualization. Check out our data viewer!