On 15 June 1988, an unusually severe hail storm occurred over northern
Greece. This storm produced hail in excess of 5 cm in diameter, and c
aused considerable damage to the Halkidiki region of Greece and the Se
e of the Greek Orthodox Church on Mt. Athos. Surface observations and
radar data archived by the Greek National Hail Suppression Project sho
w that the storm was strongly tied to terrain influences.