When trying to decide whether I need to bring my umbrella today, I check the NWS forecast for Fairfax County inside the beltway: "Scattered showers after 2 p.m." Then I check the AFD: "Some shower activity is likely to develop today, particularly west of U.S. 15 where scattered showers are in the forecast. . . . High-resolution models bring scattered showers toward the I-95 corridor just after sundown."
I didn't know where the heck US 15 is (why can't they use placenames instead of highways??) so I check the map and see it's way out past Leesburg! So the forecast and the discussion are mutually contradictory. I'll chance leaving the umbrella at home, because when I haul that thing around all day and not a drop of rain falls, I feel like I've been made a fool of.