Those sorts of uppers would produce some double digit maxima by day.

The record for April is -1.1C

This chart is beyond insane.

And obviously this is never going to happen, that's not the point.

To even see this is extraordinary. Again I've hunted for cold ensembles for years and the coldest I've managed is about -21C and it goes without saying always in the depth of Winter.

OH MY GOD.

Ensemble 12 on the 0Z

No words.

-20C almost down to East Anglia - what sort of maxs are looking at here.

-20C almost down to East Anglia - what sort of maxs are looking at here.

As mentioned in my post first thing this morning - still above zero, as by the time the cold air moves south and it's daytime it'd warmed out.

It did manage to bring -8C by night here though!

 

As mentioned in my post first thing this morning - still above zero, as by the time the cold air moves south and it's daytime it'd warmed out.

It did manage to bring -8C by night here though!

 

I doubt it, anything below -14C at the T850 level will guarantee staying below freezing.

At -20C we are looking at -5C type maxima April or not.

I doubt it, anything below -14C at the T850 level will guarantee staying below freezing

Nope. Again, look at the post I made earlier today about that same run. Here, I'll link it for you:

https://www.theweatheroutlook.com/twocommunity/default.aspx?g=posts&m=1329666#post1329666

Extremely high *(record) MSL pressure projected over Greenland: up to 1100mb at 9GMT next Sunday!

Record MSLP is from Siberia at just 1083.8mb.

Yes, very encouraging output this morning again  lovely to look at my iPhone calendar this morning and it says ‘British Summer Time Begins” 😃

Looks less and less likely that the cold plunge gets here, thank heavens. Warm air hanging on longer next week turning the first cool down into a toppling high pressure, then low pressure getting involved once the second big northerly flow sets up (as depressions are wont to do, with the instability) and deflecting the cold air westwards.

Thats the ECM, but GFS does much the same by the look of things.

Just checking the GFS charts - Northerly looks like it wont materilise. - Same old story and at least this failure is occurring in Spring for a change.

Sadly that is not true.

The extreme option are unlikely (hopefully) but the northerly flow looks like a high probability based on current GFS, ECM and GEM output

https://www.wetterzentrale.de/maps/GFSAVGEU06_234_1.png 

https://www.wetterzentrale.de/maps/ECMAVGEU00_216_1.png 

https://www.wetterzentrale.de/maps/GEMOPEU00_228_1.png 

Extremely high *(record) MSL pressure projected over Greenland: up to 1100mb at 9GMT next Sunday!

Record MSLP is from Siberia at just 1083.8mb.

 

 

Nothing compared to the 1107mb we had in the charts yesterday!

Extremely high *(record) MSL pressure projected over Greenland: up to 1100mb at 9GMT next Sunday!

Record MSLP is from Siberia at just 1083.8mb.

 

Jesus Mary and Joseph. Thought I had eaten something I shouldn't for lunch. I have never seen charts like that before.

 

Jesus Mary and Joseph. Thought I had eaten something I shouldn't for lunch. I have never seen charts like that before.

Still nothing compared to Yesterday's which I have saved along with the P12 0Zs from todays.

Think the GFS may be overdoing it but with the ECM showing close to 1070hpa as we get closer to this event I think the high pressure watch thread may need to return...

Some exceptionally  low daytime temperatures should be showing for next week. So far they're not.

Some exceptionally  low daytime temperatures should be showing for next week. So far they're not.

High single/low double figures would be about right for the second half of the coming week based on the synoptics. Beyond that a bit cooler, before than a lot warmer for many.

The young (even the relatively young) and excitable here wont remember Aprils of the past. I remember several which delivered heavy snow and hard frost, notably the amazing blizzard of late April 1981. More recently April has been a good deal more benign.

It's far too early to call a record cold northerly based on t144+.

Insane GFS12z. Obviously will be an outlier.