Here are some useful links:

ISA - Southern Chapter at   www.isasouthern.org

International Society of Aboriculture at    www.isa-arbor.com

Trees Are Good at   www.treesaregood.org

Tree Care International at    www.tcia.com

Green Industry Council at  www.ncgreenindustrycouncil.org

Mecklenburg County Extension Office at  http://mecklenburg.ces.ncsu.edu

North Carolina Urban Forestry Council at  www.ncufc.org

Weather at     www.weather.gov