Predict weather

Predict weather was a spell used by druids and the Red Wizards of Thay

Effects
A caster used this spell to accurately predict the weather in an area. They gained total knowledge of impending weather from sky conditions and precipitation to temperature. The spell was able to predict the weather in an area of 9 square miles (23 square kilometers). The spell predicts the weather at least two hours in advance, this time-frame was increased based on the caster's skill level.

Casting
In addition to verbal and somatic components, the spell required a material component, the druid's holy symbol. The arcane version of this spell required pollen, which was thrown in the air during casting.

History
The Red Wizards of Thay were known to use this spell before the Time of Troubles. It was widely believed to have been lost to them afterwards.