Considerably late but here is the ob I compiled during
our thunderstorm of 2009, the only overhead storm this
year. All electrics, other than indoor lighting disconnected
due to close proximity of exterior flashing... lightning!

2cm covering of splodgy hail and snow, white stones up
to 6mm diameter. Ginormous puddles. Roads passable
but slick with white material.

SYNOP 23/1750Z (retard)
03/// 11/04 92412 10018 20015 49899 53004 6///2 79676
333 10040 43002 93206=

METAR
EG// 231750Z 24012G23KT 0400 +TSGR (+TSRASN)
VV/// 02/02 Q//// RED=

Details...
wind... SW by W, force 4 (sharp veer from S, force 3).
visibility... 400m (lowest 150m at 1745Z).
weather... moderate thunderstorm with violent hail, rain
and snow (violent snow??).
clouds... sky obscured.
dry bulb... +1.8C.
dewpoint... +1.5C.
RH... 98%.
sea level pressure... 989.9mb.
max temp today... +4.0C.
rainfall last hour... unmeasurable.
12 hour rainfall (0600-1800Z)... ditto (will record the
09-21Z rain at 2100Z).

beaufort letters (1650-1750Z)... c,ctloh,tlHRS2F,
tlHRS2f.

Nigel (Romsey, Hampshire)
40m amsl