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About John90

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    Weather/Aviation nut

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  • Location
    South London
  • Interests
    Weather and Aviation.
  • Weather Preferences
    Severe storms and heavy snow

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  1. There's some interesting articles and videos about supercells associated with "cold core" lows in the USA. I wonder if this is something similar. Tornado's often occur in the UK during autumn/winter but usually associated with squalls. This event seems weird as it was quite an isolated "storm" I put storm in quotations because their didn't appear to be any lightning.
  2. A land spout is a type of tornado that isn't associated with a mesocyclone. It would be interesting to dig deeper into this and see whether this one was. Low topped supercells can occur at this time of year given enough instability and shear. Whats always frustrating with uk tornado's is that there's never any images of the cloud structure. The video that shows the tornado crossing the motorway, you see a small suction vortex crossing the lanes, but theirs probably a broader circulation above this.
  3. Ah i went to the storm discussion expecting comments about the tornado there. I was commenting on the display of mammatus we had around the time of the tornado this morning. Didnt expect to hear their had been a tornado though.
  4. Im surprised this hasnt been mentioned yet. Good to see the met sharing a grab from the Doppler We had a nice display of mammatus from the same storm this morning.
  5. So is it a question that the forecast was just way off with the intensity? If they deem only to be a low risk wind speeds above a certain level, but then that low risk is realised, doesn't it say something more about the forecasting abilities than anything about whether naming storms is good idea? I can understand you wouldn't want to name every storm that is deemed to be a lower risk. You'd end up with the cry wolf effect.
  6. Exactly. Maybe the naming isn't a bad idea but the criteria for doing so is?
  7. Noticed this tweet. Amazing structure for the UK! Caught a couple of storms while on the train through Lincolnshire this afternoon.
  8. Remember those symbols are model driven. On a day like today showers will show up in slightly different places for each model run and change the symbols depending. It's best not to focus on the symbols and just read the text forecast.
  9. Correct me if I'm wrong but we're past peak heating now and these kind of storms tend to weaken after. Different to the plume type storms of the week past. I'm never normally bothered by your typical low pressure autuminal type storms. Those storms in the north were impressive though.
  10. It's mostly likely scud cloud which is non rotating condensation that forms as the gust front pushes warm air above it. It can look spectacular and quote dynamic. Either way it looks like theres some great storm structure today.
  11. It depends where you are on a storm. It's rare you'll get tornadoes on the leading edge of a gust front but if this was the back end of the storm and it looked right on radar, I'd be very interested in that lowering on the right hand side.
  12. Morning all. Finally got a decent storm in the early hours of the morning. Woke up in panic realising I'd left the skylight open! Looks like today could be Interesting too. Me and a few other aviation nerds at work have been having fun watching aircraft do all sorts of wired approaches to Heathrow this morning.
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