Alter Aeon Online Help
Keywords are: 'druid spells weather requirements control'
Many weather spells require specific weather conditions to be possible.
For example, it's not possible to create a blizzard when it's hot -
the air temperature must first be lowered to allow snow to form. The
'control weather' spell is the most effective way to change the
weather if you need to do so.
Here are the requirements for the weather spells:
ice fog - no requirements
blizzard - overcast, high wind, freezing temperatures
hailstorm - overcast, high wind, cold temperatures
hailstone - overcast, high wind, cold temperatures
call lightning - overcast, moderate wind
call thunder - overcast, moderate wind