ForWarn II

Satellite-Based Change Recognition and Tracking


Watching pine beetles in the Wasatch

Fri, 02/03/2012 - 14:16 -- cadoughe
Defoliation in the Wasatch Range, Utah. Image: Steve Norman, USFS

This image shows forest change anomalies on the north slope of the Wasatch Range of Utah on September 13, 2011 compared to the prior year. The high elevation zone above treeline is shown as an uncolored area under the words “Wasatch Range”. Most of the region’s forest is blue, meaning it is similar to that of 2010. Just below treeline, the Range’s slopes show a moderate to extreme departure in greenness. In recent years, the north slope in particular, has experienced repeated outbreaks of the Mountain Pine Beetle according to aerial surveys, but these were usually at a lower elevation.

Caterpillars defoliate the Pee Dee

Fri, 02/03/2012 - 14:08 -- cadoughe

According to climate data, coastal North and South Carolina were having a mild drought in mid May of 2011. Mean water flow for the Pee Dee River near Pee Dee, SC during the 24-days prior to May 16 was 15.9% below the 2003-2010 average for that time according to USGS statistics ( These clues suggest that this reduction along the Waccama and Pee Dee Rivers of the Carolinas is not the result of flooding.


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