Pollstar has records for more than 2,400 events scheduled through September 14 and it’s impossible to say how many of those shows will be canceled or postponed in the aftermath of the terrorist attacks.

Concert organizers are reacting as quickly as possible to the situation but information is available on a haphazard basis right now. Anyone holding tickets or planning to attend any public event in the next few days should contact the venue first.

Nearly all major public gathering places across the United States have been closed for safety reasons. The grounding of all commercial aircraft and the disruption of various telecommunication services complicates the situation immeasurably.

The Pollstar staff is gathering information on a wide range of events, and talking to promoters and venues to see what, if any, long-range plans they might have.

Clear Channel Entertainment, which is headquartered in Houston and promotes events in approximately 100 venues nationwide, has called off all its shows for tonight.

“We have postponed all events nationally,” Co-CEO/President Rodney Eckerman told Pollstar. “We really made the decision to reschedule out of respect to the victims of the nationwide tragedy.”

Eckerman could not comment on the status of events past tonight. “We’ll watch and see what government agencies do and have discussions with artists and go from there.”

Clear Channel has advised all ticketholders to keep their tickets. The company will provide further information about new concert dates as soon as schedules solidify.

East Coast promoter Metropolitan Entertainment has canceled all of its shows for today and tomorrow.

Metropolitan’s VP of concerts, Debra Rathwell, saw the second World Trade Center explode in her rear view mirror as she drove across the George Washington Bridge into New Jersey.

Like everyone else, she was having a difficult time contacting people and planning what to do next.

“There’s no one to talk to,” she told Pollstar. “Z-100 (radio) is located near the Empire State Building and that’s been evacuated. Their office in Secaucus has been evacuated. Rock Radio has gone to news and you can barely get through on phone lines into New York. You just keep trying and sometimes you can get through. Cell phones are pretty much not working.

“We had O-Town tonight at the Hammerstein Ballroom, and we’ve canceled that. And we’ve canceled Lil’ Romeo tomorrow at the Beacon Theatre.

“We have some Pledge of Allegiance (the Slipknot / System Of A Down package tour) shows going on sale on Saturday and all of the papers have been printed, so I think we’ll make tickets available as per the advertising and have our radio (partners) catch up later because there’s no one to talk to but radio.

“It’s going to be days before we get back to normal, if you ever can,” she said. “I think America was changed today. Light a candle.”

While Los Angeles suffered no physical damage in Tuesday morning’s air attacks, public safety concerns have forced the cancellation or postponement of several events, including the Latin Grammy Awards show.

Madonna’s September 11 Staples Center concert has been postponed. Organizers hope to announce a make-up date later this week and, so far, her September 13 and 14 shows at the venue will take place as scheduled.

Concert companies in virtually every market have to wait and see what happens in the next few days as they reevaluate their calendars. Canceling tonight’s shows is one thing; predicting the safety and transportation situation is another.

“We’re at a level four alert in Atlanta,” Clear Channel Atlanta executive Peter Conlon told Pollstar. “They’re evacuating certain buildings, so we’re canceling along with that but I think tomorrow we’ll have to see where the situation is.” He said tonight’s shows at the Cotton Club and Fox Theatre had been called off.

“We canceled a (ticket) on-sale coming up for this weekend but as far as shows, because of the responsibilities involved in those situations and being maybe 72 hours out, it’s just hard to make a call right now.”