The storm brought strong winds to Carroll, with a National Weather Service cooperative observer recording wind gusts of 63 mph at 6:58 p.m. four miles northeast of the town of Millers -- not far from the River Valley Ranch.

The weather service did not have rainfall reports for Carroll County, but reports throughout the region ranged from one-tenth of an inch to about four-tenths of an inch of rain, Bettway said. BWI Thurgood Marshall Airport in Linthicum recorded 0.19 inches of rain.

The state's Environmental Health Bureau, a division of the Department of Health and Mental Hygiene, regulates more than 800 summer camps, bureau director Dr. Clifford Mitchell said.

State law requires camps to have a written emergency plan that includes procedures for camp staff to ensure camper safety during natural disasters, severe weather and other emergencies.

Officials have begun an inspection of the camp and will look to see whether River Valley Ranch had such a plan, Mitchell said.

The camp had not yet been inspected this year, which is not unusual, he said.

"All the camps tend to open up within the same generally short window," Mitchell said. "In many cases they don't really exist until after school ends. In reality it's just not possible nor have we ever inspected them all before they open."

BGE reported more than 7,700 power outages, affecting roughly 13 percent of customers, in Carroll County as of 10:45 p.m. Tuesday, though the number had dropped to about 4,700 by early Wednesday morning. By early Wednesday morning, more than 5,000 people remained without power in Harford County and more than 7,000 remained without power in Baltimore County. Nearly 42,000 of the region's 1.2 million customers were out of service Tuesday night.

Tuesday's incident was the second camp death in five years in Carroll County. In late 2009, a 9-year-old Noah Asid died days after a tree fell on him at the Hashawha Environmental Center, a county-owned facility in Westminster. Noah and other children and counselors were preparing for a hike as part of a holiday-week nature camp when a 60-foot hickory tree fell on them.

Noah's family sued Carroll County in 2011, seeking $12 million on a wrongful death claim. The lawsuit claimed the county and camp employees were negligent by not cutting down the tree and not keeping campers inside during windy weather. A judge ruled in favor of the county in 2013.