All reports should include the following information to be as thorough as possible.
Time & Date: Should help in determining the type of conditions one would normally expect during the same period.
Place: Preferably giving as much detail as possible if the site isn't well known to others.
Conditions: Wind speed and direction, temperature, cloud development, any other factors that may seem relevant.
Witnessed or saw outcome: Preferably we'd like to get first hand reports but sometimes second hand reports can be useful as well.