Doctor Hope Cassel dies after storm toppled paddle board at Chatfield Reservoir

A woman rescued after a storm at Chatfield Reservoir has died.

Parker obstetrician Hope Cassel, 45, was paddle boarding with her three sons ages 14, 13 and 11 and a friend of the boys off the swim beach at Chatfield Reservoir Friday at about 1 p.m. when a storm came up, a Jefferson County Sheriff's Office spokesperson said in a statement.  

There was heavy wind, rain, lightning, thunder and hail, causing large waves at the reservoir, the official said.

The four boys, who were all wearing life vests, were able to make it to shore, but Cassel did not. She was found in the water unresponsive.

Cassel was hospitalized in critical condition Friday. However, Monday morning, the Jefferson County Sheriff's Office said she passed away.

Cassel was wearing an inflatable life ring that could be activated by pulling a cord, but the life ring had not been inflated, according to officials.