HARMONIE 18z run going for 36C on the north Norfolk coast on Saturday
35C near Gravesend and also in Essex
http://modeles7.meteociel.fr/modeles/harmonie/runs/2019062718/harmonie-41-45-0.png?27-23
UK date record for 29 June is 35.6C (which is also the equal highest June temperature on record)
The 0z run shows much the same, complete with a great big "35" over Leysdown. The Met Office raw output suggests 28 (GFS 27), but I suspect it'll be into the 30s simply because the wind will have swung south of east, losing the North Sea influence and the protective boundary modification.
It'll be an interesting day to cap a fascinating run up to the weekend.
EDIT: This morning's sounding down in Sussex shows the incredible situation well.
575dam thickness (the record is 576, so we're close), but just look at that boundary modification!
For those who don't know how to read these charts, the rightmost line is the temperature (at various pressure levels as shown on the left) and the leftmost line is the dewpoint.
The chart shows relatively cool air at the surface (our boundary layer, which so far has shielded us from the heat), with the "bulge" further up representing the exceptionally hot air that's covering western Europe. It's above 20C from 900hPa up to 750hPa, but note also the way the dewpoint goes way down to below -20C. That's representative of a very stable boundary layer, which is why Friday is likely to be another relatively cool day (at least down here - if you can "mix out" that layer, as will happen tomorrow, then it'll be hot or very hot instead.)
I'll post tomorrow's sounding if I remember, for comparison, but you can find them here. Note they're only available at midnight, rather than midday as well as they used to be (budget cuts!)
http://weather.uwyo.edu/cgi-bin/sounding?region=europe&TYPE=GIF%3ASKEWT&YEAR=2019&MONTH=06&FROM=2800&TO=2823&STNM=03882
Change the 2800 and 2823 to different dates to see different charts (i.e. 2700 and 2723 for yesterday's).
Edited by user
28 June 2019 03:25:25
|
Reason: Not specified