[Nigel Bolton]

Unusually cold northerly expected to affect the UK, particularly the east on Friday and into Saturday. Intense cold pool moving southwards across the North Sea and eastern England likely to bring some lively convection here.

Convergence from backing wind over the land during Friday night abutting the Northerly gradient over the North Sea may be the ingredients for quite a thundery night along the east coast of England, perhaps with some interesting falls of hail. Sea temps Lincs southwards are between 13 and 16 degrees, so air likely to become very unstable.

Low risk convergence induced tornadoes eastern Lincs and western Norfolk Friday night.

Well worth watching this set-up.

A thread for reports, particularly for hail.

N.

[Tony Sales]

Mmmmm interesting, I'll keep an eye out then

[Richie]

Rain with small hail in Driffield East Yorkshire at 1115Z.

[Richie]

Brief shower of small (<5mm) hail with heavy rain at 1655UTC.

[Tony Sales]

Lots of hail/sleet showers packing in over here, no ground cover though

[Nigel Bolton]

Tony Sales, on 26 October 2012 - 06:35, said:

Mmmmm interesting, I'll keep an eye out then

Bet you're glad you did now. Wow!!!

N.

[Tony Sales]

Indeed haha
Some heavier hail showers now pushing through, nearly pea sized atm

[Richie]

Another small hail shower with moderate rain around 2000 UTC.

[Tony Gilbert]

Nigel Bolton, on 25 October 2012 - 22:52, said:

Unusually cold northerly expected to affect the UK, particularly the east on Friday and into Saturday. Intense cold pool moving southwards across the North Sea and eastern England likely to bring some lively convection here.

Convergence from backing wind over the land during Friday night abutting the Northerly gradient over the North Sea may be the ingredients for quite a thundery night along the east coast of England, perhaps with some interesting falls of hail. Sea temps Lincs southwards are between 13 and 16 degrees, so air likely to become very unstable.

Low risk convergence induced tornadoes eastern Lincs and western Norfolk Friday night.

Well worth watching this set-up.

A thread for reports, particularly for hail.

N.

Hi Nigel,
yes fully agree and to be honest well spotted. ...For me everything looked pretty benign till the last model run!!

have nevertheless started a convective outlook thread here in any case
http://www.ukweather...-27th-oct-2012/


PS. The thing that gets me the most is the the incredible lapse rate forecast. The North Sea SST still mild this should potentially really kick off some good convective activity east coast regions. The potential for hail showers could well see some wading in what looks like snow!

This post has been edited by Tony Gilbert: 26 October 2012 - 20:22

[Tony Sales]

Had a report from a friend of heavy snow, thunder and lightning near Morpeth!

[Tony Sales]

5-6 flashes and bangs he said, and heavy snow

[Tony Sales]

Some serious wind gusts here, must be getting on for 40/50mph

[Nigel Bolton]

Possible tornado east and southeast of Thetford this morning at 07:15. See relevant thread.

N.

[Dave W]

Late report of a rain & hail shower here earlier at about 1500

[jonathanwebb]

received a report of thunder at Bury St Edmunds, Suffolk, at 1pm today, accompanied by small hail