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25 years since this switch around.


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Posted
  • Location: Irlam
  • Location: Irlam

I remember this well. April 1990 started off very mild with temperatures in the high teens but within a couple of days, an Arctic airflow comes southwards and brought snow showers. I recall snow showers falling during the evening of the 3rd April and woke up the next morning with a snow cover. Only the the second official snow cover for the 1989-90 season recorded here.

Maximum on 1st April 1990 at Manchester was 17.4C by the 3rd it was 7.0C

Rrea00119900401.gif

Rrea00219900401.gif

Rrea00119900404.gif

Rrea00219900404.gif

There was a notable earth tremor for the UK on the 2nd April with its epicentre at Bishop's Castle in Shropshire with a magnitude of 5.1

Edited by Weather-history
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Posted
  • Location: halifax 125m
  • Weather Preferences: extremes the unusual and interesting facts
  • Location: halifax 125m

Yes one of the many occasions back then when the daffodils were flattened by the snow.

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Posted
  • Location: Shrewsbury
  • Location: Shrewsbury

Don't remember any snow, but I certainly remember the earthquake. Was in school at the time and it made all the walls shake and actually did some damage in town- they closed off the centre because of bits falling off buildings. No weather sticks in my mind for April 1990 in fact, 1989 was the one I remember it snowing.

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Posted
  • Location: Windermere 120m asl
  • Location: Windermere 120m asl

April switcharounds have been fairly common, however, its a while since we have had one. A northerly often comes on the back of a southerly and vice versa - they usually occur when either -

 

high pressure to the south/south east originally pulling in a warm southerly retrogresses NW or the opposite high pressure to the NW sinks SE.

 

low pressure becomes stretched to the west with a sharp longwave trough pumping up warm southerlies whilst all the time high pressure builds to the north quickly forcing low heights to split and sink quickly over the country and SEwards with cold air undercutting from the north ad heights rapidly build to the NW.

 

The key theme is the presence of northern blocking in some form and a highly meridional flow, which is more likely in April and May than any other time of year.

Edited by damianslaw
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Posted
  • Location: Cleeve, North Somerset
  • Weather Preferences: Continental winters & summers.
  • Location: Cleeve, North Somerset

I wasn't born at the time but a similar thing happened in April 2008. Here we had 19C on the 03rd and 06C on the 06th. From early summer to the only dusting of snow of that season in just a few days.

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