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Slow Storms Produce Life‑Threatening Flooding and Active Severe‑Weather Watches Nationwide

High atmospheric moisture and slow storm steering are producing training heavy rain that is causing debris flows on Colorado burn scars and broad flash‑flood risk across the Northeast.

Overview

  • A Flash Flood Emergency was issued for the Aspen Acres burn scar after thunderstorms produced 1–3 inches of rain and triggered life‑threatening debris flows and water rescues, with the warning issued on Tuesday.
  • Persistent, slow‑moving storms over eastern New York, New Jersey, Long Island and southern New England are producing training rain expected to deliver 2–4+ inches in many areas and are prompting ongoing flash‑flood warnings.
  • The Storm Prediction Center is keeping multiple watches in effect across the Plains, Front Range and Mid‑Atlantic because organized clusters and supercells pose threats of large hail, damaging straight‑line winds and a localized tornado risk.
  • Scattered heavy downpours in the High Plains and Front Range have produced brief 2–3 inch‑per‑hour rates that locally exceeded flash‑flood guidance and prompted Flood Watches for parts of the southern I‑25 corridor and eastern plains.
  • Forecasters say very moist low‑level flow, slow storm motion and saturated soils or recent burn scars are increasing runoff and debris‑flow risk, and they urge people in warned areas to follow local NWS products and avoid driving through flooded roadways.