Overview
- The Weather Prediction Center warned Thursday that an unrelenting heat dome will keep highs in the 90s to low 100s across the central and southern Plains and Mississippi Valley, with many areas seeing heat‑index values above 100°F.
- National Weather Service offices have issued Heat Advisories for multiple regions and forecasters emphasize warm, humid nights in the 70s that reduce overnight cooling and raise heat‑illness risk.
- A slow‑moving cold front combined with deep tropical moisture from the remnants of Tropical Storm Dolly and a weak Gulf wave is producing multiple rounds of showers and thunderstorms with isolated 1–4+ inch downpours and urban or flash‑flood potential.
- The Storm Prediction Center has placed pockets such as southeast Wisconsin under a Slight risk for damaging winds and heavy downpours, and local NWS offices have issued Flood Watches for saturated areas like the Susquehanna Valley.
- Forecasts now call for cooler, drier conditions for much of the Northeast and New England over the Labor Day weekend while heat and daily storm chances are likely to persist in the Gulf Coast, Southeast, and parts of the Plains into next week, so county‑level NWS updates and short‑term warnings remain the best guidance.