Photo by Scott ShoremanHave you noticed that it hasn’t rained in a while? We may have dodged Hurricane Earl, but now the D.C. area is facing a drought. In fact, there hasn’t been any significant precipitation since August 23. For the year, rainfall as recorded at National Airport has been off by some 21%. The Capital Weather Gang has a good round-up of the current situation, and they note that things aren’t nearly as bad…