The time-lapse image above (courtesy tropicaltidbits.com) shows an area of low pressure that will move along a stalled out frontal boundary between Sunday afternoon into the Tuesday morning rush hour.
- Torrential rain and widespread embedded thunderstorms are likely
- Heaviest rain threat will arrive on the 4th of July, in fact the Holiday itself may turn out to be a wash out. Hoping for a break in the action in time for the fireworks.
- Flash Flooding is a great possibility in areas that receive training thunderstorms.
- Lightning will pose a danger during the Holiday so if you hear thunder you are close enough to be struck by lightning.
How much rain could fall?
Latest North American Model (NAM): 1 to 4″
Latest Global Forecast System (GFS): 2 to 4″
Saturday through noon on Sunday looks to be the best window for outdoor activities. Showers may begin as early as Sunday afternoon as a warm front stalls across our area.
Hope everyone has a safe and happy 4th of July!
DC Storms 
Nooooo! I don’t want a rainy fourth! Bring on the low humidity! Could flash flood watches be issued?