2:30 p.m. update:If you’re well north and west you might still be waiting on Irene. However, south and east of D.C. rain is beginning to add up. Very little has fallen in parts of northern Loudoun County to .3-.6 (light gray) in a belt from near D.C. to Baltimore and then up to 1” plus over far southeast areas. Yellows and oranges well southeast are in the 2-4” range already. This pattern of rainfall was expected during the day, and more consistently heavier rains will continue to advance north and northwest into the evening.
Even before the brunt, local EMS offices are reporting increased calls with power lines already coming down and water leaking into structures.