ForWarn identified anomalies in the Lyon and Johnson Mountains, New York. There are several possible causes for this event. Clouds may obstruct the detector providing a false anomaly, insects may be defoliating the area, the phenology of the plants could play a part in departure, or sever weather causing damage to foliage.
ForWarn detected an anomaly in the Allegheny National Forest, Pennsylvania in August 2012. Insect defoliation is the probable cause for the decline in vegetation greenness.
ForWarn detected a disturbance in Potter County, Pennsylvania in July 2012. The cause for the decline in vegetation greenness is currently unknown but may be attributed to insect defoliation.