"Jon O'Rourke" wrote in message
...

The extent of the clearance is uncertain (clear slot now across east
Kent
http://www.metoffice.gov.uk/satpics/latest_uk_ir.html) but even so
there's a
lot of concern about ice as cold air (sub 522dam cold pool) advects
west
over wet surfaces. Flash warnings for ice have been issued
http://www.metoffice.gov.uk/weather/.../warnings.html

.... the Manston sequence (lowering dew point, well broken cloud) is
worrying - I've seen some tricky ice develop in these situations even
when the cloud hasn't broken completely - evaporative cooling with in
the steady easterly would be enough to lead to localised ice after all
the PPN today - and the surface has also now been chilled quite
effectively.
(Latest at the top)
EGMH 231750Z 07011KT 9999 FEW015 SCT030 01/M01 Q1020
EGMH 231720Z 07010KT 9999 FEW015 SCT030 01/M01 Q1020
EGMH 231650Z 08008KT 9000 FEW015 BKN030 01/M01 Q1019
EGMH 231620Z 10006KT 9000 SCT008 BKN020 01/00 Q1020
EGMH 231550Z 12007KT 3500 BR OVC003 01/01 Q1020
EGMH 231520Z 13008KT 100V160 4000 BR OVC002 01/01 Q1020
Martin. -- FAQ & Glossary for uk.sci.weather
at:-http://homepage.ntlworld.com/booty.weather/uswfaqfr.htmandhttp://booty.org.uk/booty.weather/metindex.htm