Storm Imogen

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OP
OP
Racing roadkill
Don't worry - this one is going to hit darn sarf, so the BBC will talk it up to apocalyptic proportions. ;)
Prepare for a massive over reaction on breakfast telly tomorrow...
We are just getting the first of it. The rain is coming in horizontal right now. It's very very bad.
 

briantrumpet

Legendary Member
Location
Devon & Die
Yep, it's going to be lively. We might get a bit more than a trampoline across the road...

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briantrumpet

Legendary Member
Location
Devon & Die
Yebbut storms have gust speeds of 55-63 mph. Someone's telling porkies.
I'm always wondering - is there a standard multiplier from the wind speed for the gusts, or is it guessed/ calculated depending on the type of weather system? In other words, would they over forecast, say 30mph winds with no gusts one time, and 30mph winds with 60mph gusts another?
 

slowmotion

Quite dreadful
Location
lost somewhere
I'm always wondering - is there a standard multiplier from the wind speed for the gusts, or is it guessed/ calculated depending on the type of weather system? In other words, would they over forecast, say 30mph winds with no gusts one time, and 30mph winds with 60mph gusts another?
I don't know but I think they tend to forecast the maximum gust speed because it's the gusts that do the most structural damage on land. They actually measure gust speed with rapid response anemometers, often ultrasonic.
 

Rasmus

Without a clever title
Location
Bristol
Someone said trampoline!



I'll be on the train into work early tomorrow. GWR warning about speed restrictions - we'll see how it goes.
 

briantrumpet

Legendary Member
Location
Devon & Die
I don't know but I think they tend to forecast the maximum gust speed because it's the gusts that do the most structural damage on land. They actually measure gust speed with rapid response anemometers, often ultrasonic.
It's the forecast gusts that I'm curious about. Meteo France seem to have weird figures - Tuesday has southerlies of 15kph with 45kph gusts, and then Wednesday has 10kph northerlies and 70kph gusts.
 

briantrumpet

Legendary Member
Location
Devon & Die
Someone said trampoline!



I'll be on the train into work early tomorrow. GWR warning about speed restrictions - we'll see how it goes.

Terrifying. Totally Terrifying.
 

summerdays

Cycling in the sun
Location
Bristol
We just had a heavy hail line pass through, so loud as it hit the windows! I would have wanted to be cycling or even walking in that!
 
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