Warning Description: Fire Weather Warning Warning Date: 3:58 am EDT on September 4, 2010 WarningSum:...Red Flag Warning In Effect From 11 Am This Morning To 7 Pm Edt This Evening... Warning Message:The National Weather Service in Upton has issued a red flag warning...which is in effect from 11 am this morning to 7 PM EDT this evening. The dry passage of a cold front overnight Friday will usher in a dry airmass...allowing relative humidity values to drop to between 25 and 30 percent this afternoon and evening. Strong westerly winds of 25 to 35 mph are expected behind this front. These conditions...combined with the fact that very little rain has fallen across the region in the past few weeks will aid in the rapid and erratic spread of any brush fires should any occur. Precautionary/preparedness actions... A red flag warning means that critical fire weather conditions are occurring or imminent. A combination of strong winds...low relative humidity...and dry fuels will create explosive fire growth potential.