On Wednesday, January 20, 2021 at 7:54:52 PM UTC, Graham wrote:
Norman Lynagh wrote:

Tideswell, Derbyshire - Wednesday 20th January 2021
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1630z 18018g29kt 7000 RA 8Sc007 08.7/08.3 975
RMK: ........and still it goes on! Total rainfall for the event
so far is 58 mm. The colder air is now moving across
Manchester so not vey far away. Max temp 9.4C and,
needless to say, there was no sunshine.
You are right there Norman. I cant believe how it. The temperature is
dropping like a stone. My Instromet thermometer has just dropped from
7.7c at 19.30 to 5.0c at 19.50, quite amazing watching it fall!!


Graham (Weston Coyney)

The rather long time-lag between the sudden temperature fall and arrival of colder air
over south Manchester compared to the Peak District and Staffordshire uplands has
also been striking. At Rostherne the temperature fall of 3c occurred between 1500 and
1600 (it was a 5c fall between 1400 and 1600). At Buxton the sudden big temperature drop
seems to have been 3 or even 4 hours later and similarly at Weston Coyney.

Peter Nockles
Didsbury
south Manchester