Hurricane Harvey, 2017

Opens HookEcho on KHGX at 2017-08-27 12:00:00 UTC and loads the archived volumes for that day. The archive goes back to 1991.

Harvey made landfall near Rockport on 26 August 2017 and then stopped. Over the next four days it dropped more than 60 inches of rain on parts of southeast Texas — the most from any tropical cyclone in United States history — and flooded much of Houston.

What the radar shows. The link opens on reflectivity from League City, in the middle of it. The thing to look for is not one storm but the arrangement: bands that form upwind, move over the same ground, and are replaced by the next one. Training, in the jargon. Any single cell here would be an ordinary thunderstorm. A hundred of them over the same neighbourhood is a disaster.

Step the loop forward for a few hours rather than a few minutes. Harvey is a case where the interesting timescale is days, not volumes.

Archive volumes come from NOAA's public NEXRAD archive on AWS, the same source the National Weather Service publishes. Nothing here is a re-render of someone else's picture.

Comments

Threads live in GitHub Discussions. Signing in uses your GitHub account — we never see a password, and there is nothing to create.