Upper Air

Upper vortex

There is an upper trough that’s pushing up across the Midlands at the moment, that’s spinning this interesting vortex of rain northwestward. It’s obviously …

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Showers in north as air mass cools

After finally seeing the back of that old cold front I never expected to see showers following on so quickly behind during this afternoon.

Leaving on a jet stream

Another 228 mph jet stream exactly a week after the last one.

200 knot jet

A more detailed look at the midnight ascent from Yarmouth Nova Scotia where the wind was blowing 201 knots (231 mph) at 250 hPa.

Lee waves

Something of interest even on a cloudy day.

Jetstream shield

I don’t know the exact technical term for this ‘shield’ of cloud is, other than calling it jet stream cirrus but I know its a harbinger of rapid development. I quite like shield of cloud that I’ve coined, who knows perhaps it’ll catch on.

The fly in the ointment

In the shape of an upper cold pool off the Brest peninsula maybe.

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