I've seen reference to Dr Jacob's weather observation leading up to and during the battle.
For those so inclined, his notes in their entirety.
http://www.gdg.org/Research/Other Documents/Newspaper Clippings/v6pt1l.html
For those so inclined, his notes in their entirety.
http://www.gdg.org/Research/Other Documents/Newspaper Clippings/v6pt1l.html