New York City is bracing for a potentially dangerous round of weather as heavy rain, thunderstorms and flash flooding threaten to disrupt travel across the city and surrounding areas. Forecasters are warning that multiple rounds of downpours could bring flooding to roads, subways, underpasses and low-lying neighborhoods, with the greatest impact expected during the Monday commute.ALSO READ: World's largest public toilet in China Why New York City weather is raising concern The latest New York City weather forecast points to an elevated flood risk after several days of storms saturated the ground across the Northeast. Meteorologists say additional heavy rain could quickly overwhelm drainage systems, increasing the likelihood of flash flooding in urban areas.ALSO READ: Who is Summer McIntosh? According to forecasts, some thunderstorms could produce rainfall rates of 2 to 3 inches per hour, while total rainfall amounts across the region may reach 3 to 6 inches, with isolated locations potentially receiving even more. Flood Watch remains in effect for New York City The National Weather Service has placed New York City under a Flood Watch through early Tuesday morning. Forecasts indicate periods of heavy rain and thunderstorms throughout Monday, with 1 to 2 inches of additional rainfall possible in some areas. Officials have warned that flooding could affect: Streets and highways Underpasses and tunnels Subway and transit services Basement apartments Areas with poor drainage Residents living in flood-prone locations are being urged to remain alert for rapidly changing conditions. Mayor issues warning to New Yorkers New York City Mayor Zohran Mamdani said city agencies have activated emergency preparations ahead of the storm. "City workers are preparing our city for heavy rainfall — clearing catch basins, inspecting flood-prone neighborhoods, and mobilizing our rapid response teams — and New Yorkers should take time to prepare too." The mayor also urged residents to be cautious, especially those living in basement apartments, where flooding can become life-threatening in a short period of time. Travel delays expected across the region Emergency management officials have advised people to prepare for a difficult commute as the heaviest rain is expected during peak travel hours. Drivers may encounter flooded roads and reduced visibility, while public transportation services could also experience delays. "As we've seen in recent storms, flash flooding can develop quickly and create dangerous conditions with little warning," said NYC Emergency Management Commissioner Christina Farrell. Northeast weather threat extends beyond NYC The flash flood risk is not limited to New York City. Nearly 60 million people across parts of the Northeast and New England are under some level of flood threat. Areas including Long Island, coastal Connecticut, Rhode Island, New Jersey and portions of Massachusetts are also expected to see heavy rain and potential flooding. Weather experts say the combination of saturated ground and additional rounds of rain creates favorable conditions for flooding, even in places that do not typically experience major flood issues. What residents should do Authorities are urging New Yorkers to: Avoid unnecessary travel during heavy rainfall. Monitor weather alerts and emergency notifications. Move to higher ground if flooding begins. Stay away from flooded roads and underpasses. Be prepared for transportation disruptions. With the Flood Watch remaining in effect and more rain expected through Monday night, officials are advising residents to closely follow updates and take precautions before conditions worsen.