Particle.news

Download on the App Store

Flash Flood Threat Shifts to Mid-Atlantic and New England as Training Rains Persist

A slow-moving trough tapping deep moisture is generating 1–2+ inch hourly rates capable of quickly overwhelming urban and hilly terrain.

Overview

  • Weather Prediction Center forecasters expect training bands from the northern Mid-Atlantic into southern New England through this evening, with 1–2+ inches per hour and rapid 2–3+ inch totals prompting localized flash flooding.
  • Earlier today, showers and storms from northern Kentucky and West Virginia into southern Ohio and southwestern Pennsylvania produced additional 2–4 inch swaths where recent downpours lowered flash-flood guidance.
  • Overnight into the morning, slow-moving convection near the Ohio River from far northwestern Tennessee into much of Kentucky generated 1–2+ inch hourly rates and isolated 2–4 inch totals, sustaining a localized flood risk.
  • Storm Prediction Center guidance notes sporadic strong wind gusts with thunderstorms from northern Maryland into eastern Pennsylvania this afternoon, but severe watches are not anticipated.
  • A separate Southwest threat is developing as scattered storms over central to southeastern Arizona into southwestern New Mexico produce 1–2 inch per hour rates with isolated flash flooding, while SPC highlights isolated hail and severe gust potential without a watch.