How a thirty minute dry thunderstorm started the Bighorn Fire

TUCSON - We know that the Bighorn Fire was started by a lightning strike by a thunderstorm almost a month ago, but how many strikes of lightning did we see and why wasn't there any rain with that storm?The Bighorn Fire was started naturally by a dry thunderstorm over Oro Valley that produced more than 25 lightning strikes in under 30 minutes, but we didn't see any rain.
Chief Meteorologist Matt Brode said, "The reason why they are dry is because the dew point hasn't reached the sweet spot needed