On the evening of Friday, April 17, 2015, a line of heavy thunderstorms swept over the Houston-Galveston area.

The RexRoss.com weather station at Pirate's Beach, on Galveston's west end recorded an exteme weather event.

The chart below shows rainfall rates reaching almost 31inches per hour - an almost unbelievable downpour.

A wind cuts of about 54 MPH accompanied the rainfall burst.

When rainfall rates about 1-2 inches per hour represent a strong downpour, it is difficult to image the 31 inches per hour rates experienced during the storm.