anlomedad

MetOffice UK's Deep Dive looks at whether Erin enters the jetstream on Monday. But in either case, Erin will strengthen and straighten the jet. Why this happens is explained well in the ~last third of the 32min video.

https://youtu.be/4SLJ2dltqpQ

[Jet-straightening ends the Greenland High and the melt season, I assume.💃]

Erin is interesting, partly bc it won't bring big suffering so curiosity is not tainted with sadness or fear.

The fact that it is diverted North is particularly interesting to me.
I keep asking meteorologists about the reason for this changed travel itinerary 😁
but I am ignored!!!!111!! 😁

So I'm scanning past storm tracks https://www.aoml.noaa.gov/hrd/hurdat/Data_Storm.html
to see which ones also got diverted North, and what the reason might have been.
At least in some cases it'll be caused by or strengthened by #ClimateChange , which, together with what happens to the jetstream when an ex-Hurricane comes near it, also means more stormy summers and autumns in Europe.


#hurricane #Erin #storm #meteorology #Hurdat2

Deep Dive 19/08/2025 – Could autumn start early? – Met Office weekly weather forecast UK

YouTube
Aug 20, 2025 at 5:00amWeb
Show threadanlomedadAug 24, 2025

2/

Good bye Hurricane Erin, meteorologist Jeff Berardelli posted yesterday.
I don't know why he says good bye, I say Hello! 😁

Within the last 24 hours, Erin entered the jet train and travelled 1660km across the Atlantic. Now at speed of 115km/hour or 62knots which is only 37km (20kn) below a cat 1 hurricane.
And her eye is at 956hPa.
https://earth.nullschool.net/#2025/08/24/1200Z/wind/surface/level/anim=off/overlay=mean_sea_level_pressure/orthographic=-41.11,28.06,532/loc=-30.852,50.311

Named tropical storms https://www.aoml.noaa.gov/hrd/hurdat/Data_Storm.html
with a comparable minimum air pressure typically achieved a maximum sustained wind speed of 200kmph or 110 knots, which is category 3 strength...😱 Thank god, sea surface temperature is cool in the Cold Blob at 14.4°C or Erin would pick up more speed, I guess
https://climatereanalyzer.org/clim/sst_daily/?dm_id=natlsp

And look what happened to the jetstream when Erin entered the scene.
Fascinating is the motionless, blue tornado-like trunk protruding out of Erin into the jet. And within 24 hours, the wind band got all messed up. Quite the contrary to the straightening and strengthening which the UK Met Office predicted for what Erin will do to the jet.
But it's early yet, maybe their projection manifests tomorrow.

#hurricane #hurricaneerin