El Yunque and PR in general received significantly less rainfall this June compared to previous three years

Rainfall maps for June 2009, 2010, 2011 and 2012 are shown below. Rainfall for June this years is well below normal.  El Yunque appears to have received only about 1/3 of the rainfall that it received in each of the previous three years.  I am not a forest ecologist, but this seems like a very bad situation to me.