• Whats causing all the blocking highs over the UK?

    From Muttley@Muttley@DastardlyHQ.org to uk.sci.weather on Fri May 9 10:10:15 2025
    From Newsgroup: uk.sci.weather

    It seems to be one following another this spring with - if we're lucky - a rainy interlude for a day or 2 before another one comes along. Is the jet stream being particularly sluggish?

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  • From N_Cook@diverse@tcp.co.uk to uk.sci.weather on Fri May 9 14:11:22 2025
    From Newsgroup: uk.sci.weather

    On 09/05/2025 11:10, Muttley@DastardlyHQ.org wrote:
    It seems to be one following another this spring with - if we're lucky - a rainy interlude for a day or 2 before another one comes along. Is the jet stream being particularly sluggish?


    There is a quasi-stable state for "our" Jetstream when it gets locked
    into IIRC a 5-lobe state, locked in position by the Rockies, Alps,
    Himalayas etc intruding close to its space, until some external
    disturbance is large enough to unblock it.
    --
    Global sea level rise to 2100 from curve-fitted existing altimetry data <http://diverse.4mg.com/slr.htm>
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  • From Muttley@Muttley@dastardlyhq.com to uk.sci.weather on Fri May 9 15:52:48 2025
    From Newsgroup: uk.sci.weather

    On Fri, 09 May 2025 14:11:22 +0100
    N_Cook <diverse@tcp.co.uk> gabbled:
    On 09/05/2025 11:10, Muttley@DastardlyHQ.org wrote:
    It seems to be one following another this spring with - if we're lucky - a >> rainy interlude for a day or 2 before another one comes along. Is the jet
    stream being particularly sluggish?


    There is a quasi-stable state for "our" Jetstream when it gets locked
    into IIRC a 5-lobe state, locked in position by the Rockies, Alps,
    Himalayas etc intruding close to its space, until some external
    disturbance is large enough to unblock it.

    Interesting. Well lets hope something unblocks it soon, the garden is looking very dry despite watering.


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