Figure 1

Lightning occurrence over Puerto Rico. Histograms of lightning occurrence rate per km\(^2\) per year binned according to: (a) hour of the day, (b) month of the year, (c) peak current, and (d) geographical location. The data used covers a 3-year period between 2012 and 2014. Panel (b) also shows the number of named storms in the Atlantic ocean per year during the 2012–2014 period. The inset table in panel (c) shows the polarity breakdown by top percentile. Among the top 10% strongest flashes, 15.2% are of the positive polarity. Panel (d) also shows overlaid the Arecibo Observatory’s location (triangle), the outline of Puerto Rico’s main island, and a circle marking 50-km distance from AO for reference.