A nor’easter stalling near the New Jersey coast delivered the primary rainfall on September 27, 2026, with National Weather Service observations recording 3–6 inches across much of New Jersey, up to 7+ inches in parts of Massachusetts, and 1–3 inches in New York and Connecticut. Scattered lighter showers occurred in the Upper Midwest and isolated western locations, while most of the central and southern U.S. remained dry under high pressure. NOAA surface analyses and regional radar confirmed the slow-moving low’s steering pattern concentrated measurable precipitation (≥0.01 inch) in the Northeast, consistent with model consensus for a rare September coastal system. Official 24-hour totals ending 8 a.m. EDT September 28 will determine precise resolution thresholds.