National Weather Service observations for September 11, 2026, indicate measurable rainfall concentrated along the mid-Atlantic, with Washington, D.C., recording 0.68 inches including periods of heavy rain and fog under overcast skies. Scattered thunderstorms and light precipitation also affected parts of the Southeast, such as Cobb County, Georgia, where a 40-60 percent chance materialized amid warm, humid conditions. Most western and northern locations, including Seattle, Los Angeles, Spokane, and Fort Wayne, reported zero precipitation with clearer or partly cloudy skies. These patterns align with a passing warm front and lingering moisture from prior systems, consistent with typical late-summer convective activity in the East. Market resolution depends on official daily totals from designated stations, with any final verification reports expected shortly from NWS offices.