Residents who have their firework permits can start purchasing their fireworks tomorrow at 12:01 a.m.

Permits to purchase fireworks are required by the city and can be picked up at any satellite city hall for $25 during normal business hours.

Up to 5,000 nonaerial fireworks may be purchased per permit. State law forbids use of aerial fireworks unless a public display permit is received from the city fire chief. Multiple firework permits can be purchased.

Fireworks can be set off only from 1 to 9 p.m. on July 4.

State health and fire officials are cautioning parents to monitor their children to prevent fireworks-related injuries this holiday. Injuries have nearly doubled in each of the past three years.

There were a record 57 injuries last July 4, though the state Department of Health began recording data only in 2003.

"Fifty-seven injuries in basically a one-day period in the state is pretty significant, especially considering all of those are probably preventable," said Dan Galanis of the Injury Prevention and Control Program at the Health Department.

The main cause of injury probably is lack of supervision of young children using fireworks, Galanis said.

Most victims, 72 percent in 2005, were 14 or younger.

"We're preparing for a big season. Last year, we had a lot of fireworks out there and a lot of brush fires," Kenison Tejada of the Honolulu Fire Department said. "We had 60 more brush fires than the previous year. We expect it to be busy.

"Even though the brush may appear a little bit greener this year, it still can burn, and it still can cause a lot of problems for people. In fact, if it does burn, there'll be a lot more smoke, which will be more of a problem for the residents."

Reach Robert Shikina at rshikina@honoluluadvertiser.com.