Very heavy rain here since 1715z with thunder/lightning 1740-1750z.
5-minute rainfall totals a

1700z Nil
1705z Nil
1710z 0.3 mm
1715z Nil
1720z 0.5 mm
1725z 1.5 mm
1730z 2.5 mm
1735z 2.5 mm
1740z 1.0 mm
1745z 2.0 mm
1750z 1.0 mm
1755z 0.3 mm
1800z Nil

Max rate between bucket tips was 75 mm/hour.

Local roads are badly flooded and traffic disrupted. Over the past year
we have had many severe weather warnings for conditions that didn't
happen. Now we have probably the most disruptive weather around here in
the past year but there's no severe weather warning this time. Ah! - The
joys of weather forecasting :-)

Moderate rain continues at 1820z.

Norman.
(delete "thisbit" twice to e-mail)
--
Norman Lynagh Weather Consultancy
Chalfont St Giles 85m a.s.l.
England