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
Jack McNeary's Site (Canker Worm Info and More) http://www.jackmcneary.com/html/cankerworms_2012.htm
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