A complex of thunderstorms is currently rumbling over the state this Thursday morning. The Des Moines weather station has reported thunder for most of the overnight hours today. The featured chart presents the frequencies of thunder being reported by the Des Moines Airport weather station. The bottom and right side bar charts display a histogram of these reports by week of year and hour respectively. The early morning hours are the favored time for thunder reports as much of Iowa's summertime precipitation is driven by a phenomena called the 'Low Level Jet'. This jet feeds unstable air into Iowa during the overnight hours.

Voting:
Good = 18
Bad = 8
Abstain = 5

Tags:   thunder