|A major blow down on the Appalachian Trail back in 2010|
The trail corridor from Pennsylvania to Maine has been pummeled by Hurricane Irene and its associated winds and rain. For sure the trail will have major blow downs, limbs about to fall down, high water in places, and muddy, slick travel. In venturing out, use the utmost care to avoid injury that could sacrifice your time in the woods. Trying to "make time" also on the trail can cost you time if you fall - like twisting an ankle or even greater injury.
Having another hiker with you is helpful should you run into unforeseen issues. Take a stocked first aid kit (I like to carry a small 2 inch ace wrap just in case along with the normal first aid supplies) and have a cell phone charged. Maps and compass are also needed in case you must venture off trail to avoid blow downs or dangerous water crossings. It's always good to take an extra day of food with you, even if you will arrive in town for resupply. In case you need to spend an extra night out there, you will have the food you need.
For up-to-date information on the Appalachian Trail itself - be sure to check the Appalachian Trail Conservancy Update Page. The ATC is an excellent resource for all things having to do with the trail. If you come across damage that hikers should be aware of, be sure to let the ATC and your local trail crew know. For other areas in which you wish to travel and that may have been affected by the storm, contact your national forest and park websites.