February 2024 C.E.T. and EWP contests

[Weather-history]

EWP has been put down as 151.1mm

 

[Roger J Smith]

Table value of 151.1 mm for February will only result in slight changes to scoring tables (average errors will be adjusted, points are not going to change). Revisions to Dec 2023 (now 161.5 and Jan 2024 97.0 have added 0.6 to winter EWP total, now at 409.6 mm, and 2023 total, now at 1194.0 mm; each one edges closer to a value just above them in tables but no change in ranks. Tables earlier in thread requiring edits will be adjusted.  

[Shillitocettwo]

New seasons are...

 

  Summer - May 21st until October 10th.
   Summer temperatures will doggedly persist until early October when they will fall off a cliff.
  Autumn Monsoon Season - Oct 11th to Oct 31st - expect relentless rain, wind and Gales Fuelled by sea surface temperatures well above average and some actual cooler air to the North
  November pseudosummer - Nov 1st to Nov 18th - temperatures in the upper teens will make it feel like almost Summer minus any actual strength in the Sun
  Autumn - Nov 19th to March 11th - there's no way you can call it Winter, the leaves ars still green well into December and the temps are too mild to call Winter
  Winter - Mar 12th to Mar 19th - Some Sudden Stratospheric Warming event on steroids will push some Siberian Beast from the East style air over us which will find a weather front and dump a good few inches of unseasonably late snow
  Disappointing Spring - Mar 19th to May 20th - despite global warming some kink in the jet stream will deliver clear sunny skies but rubbish temperatures and a run of late frosts before snapping out of it and catapulting straight into a 30.C heatwave by the middle of May

[Terminal Moraine]

Following on from the discussion about the 0900-0900 meteorological day, and how a few cold early mornings can influence the monthly mean, I checked my own data for February.

The mean 0900-0900 minimum here was 3.5c, the highest on record for February, but the mean overnight minimum ( 1800-0900 ) was 4.0c. When we're talking in terms of the possibility of monthly records being broken by a few hundredths of a degree, or even a tenth of a degree, this is a significant difference.

Not that it makes any difference to the CET  as long as it continues to be based on the 0900-0900 day but it does illustrate what a large can of worms it would open up, particularly between November and March, if it were ever to be changed to midnight to midnight to fit in with automatic weather stations.

It's much less of an issue between April and October although I can think of a few occasions where a particularly cold day in summer is negated by a clear and sunny start to the following day with the result that the temperature at 0900 is higher than the maximum on the previous day.