Once the lineup cards are submitted (approx. 5 minutes before game time), the umpires take control of the field and the crew chief becomes the person who decides whether to delay or postpone a game (and if/when to restart).
A firewood moisture meter can be used to determine the moisture content of your firewood, but are they a necessity or just a novelty? Seasoned firewood is considered to have a moisture content of 20% or less.
Kiln-dried wood has seven to 10% wood moisture content. Air-dried wood has a typical moisture content of 19%, but that varies with the relative humidity (RH). With an RH of 10% and normal temperatures, you can expect wood moisture content to be around 3%.