New York City is bracing for yet another round of severe weather, with Mayor Zohran Mamdani activating the city's Flash Flood Emergency Plan for the second time in less than a week as forecasters warn of thunderstorms, flash flooding, and even the possibility of an isolated tornado hitting already storm-battered neighborhoods.
What's in the Forecast
City officials issued a weather alert Monday afternoon warning New Yorkers to prepare for localized flash flooding tied to a new storm system moving through Tuesday. Forecasters expect clouds to increase overnight, with showers first arriving in western New Jersey early Tuesday before spreading across the region. The warning follows a pattern that's become increasingly familiar to New Yorkers this month, echoing conditions from the prior Saturday, when slow-moving thunderstorms repeatedly tracked over the same neighborhoods, triggering serious flash flooding.
Mamdani's Response
"Our administration is getting ahead of storms that are heading to our city these next few days, and New Yorkers should take time to prepare too," Mayor Mamdani said in a statement. He advised residents to expect travel delays, move indoors during severe weather, and check on neighbors — particularly those living in basement apartments, who face heightened flood risk during intense rainfall events. NYC Emergency Management Commissioner Christina Farrell echoed the urgency, warning that conditions could deteriorate quickly, especially during the evening commute: "These storms can produce damaging winds and intense downpours with little warning," she said, urging residents to stay alert and be ready to move to higher ground if flooding develops.
A City on Its Second Emergency Activation in Days
This marks the second time in roughly a week that the city has activated its Flash Flood Emergency Plan. An earlier severe weather event over the weekend brought "pea-sized hail" and flash flooding across Brooklyn, Manhattan, Staten Island, and Queens, with numerous drivers swamped and trapped, and water pouring into the Roosevelt Ave.-Jackson Heights subway station, forcing commuters to evacuate. NYC Emergency Management had warned at the time that the strongest storms carried damaging wind gusts of 50 to 70 mph, adding that "an isolated tornado cannot be ruled out." Governor Kathy Hochul reinforced the message, urging residents to "take this weather seriously" and check on friends and family members who might need assistance.
What the City Is Doing to Prepare
Ahead of Tuesday's storms, crews have been dispatched to clear catch basins in historically flood-prone neighborhoods, and emergency teams remain on standby to respond as conditions develop. The city's broader preparedness playbook — used consistently across this stretch of repeated storms — includes limiting travel during heavy rain and thunderstorms, taking public transit when possible, and never walking, biking, or driving through floodwaters. Specialized emergency crews and equipment have been positioned throughout the city for rapid deployment, and departments including the DEP, DSNY, and DOT have been inspecting and clearing catch basins in the highest-risk areas.
Travel and Commute Impact
The MTA has separately urged commuters to exercise caution and plan for extra travel time as the storms move through, given the risk of both localized flooding and potential delays tied to weather-related service disruptions. With rainfall capable of overwhelming drainage systems in low-lying neighborhoods, streets, highways, and underpasses, officials are cautioning that even seemingly passable roads can become hazardous quickly during the heaviest bursts of rain.
Practical Tips for Residents
City officials recommend residents sign up for real-time alerts by texting NOTIFYNYC to 692-692, secure loose outdoor items ahead of strong winds, and report hazards like downed trees or blocked catch basins to 311 — or 911 if there's an immediate risk to life. For anyone in a basement or ground-floor apartment, officials suggest deciding in advance where to go if conditions worsen: a neighbor on a higher floor, a nearby public building, or a friend or family member's home. The consistent message across recent alerts has been "turn around, don't drown" — even shallow floodwaters can stall vehicles or create serious safety risks.
What's Next
With this round of storms following closely on the heels of last weekend's severe weather, and city officials warning conditions could worsen quickly during peak commute hours, New Yorkers are being urged to monitor forecasts closely through Tuesday. Given the pattern of recent weeks — including a heat advisory expected to push temperatures back toward 90 degrees later in the week — the city appears to be settling into an unusually active and disruptive stretch of summer weather.