New York City emergency officials are urging residents to prepare for extreme heat and possible thunderstorms expected to hit the city Thursday and Friday, with more than 600 cooling centers set to open across the five boroughs.
The National Weather Service has issued a heat advisory from noon to 8 p.m. both days. Temperatures are forecast to reach the low 90s, with heat index values climbing as high as 100 degrees Fahrenheit (37 Celsius) on Thursday and remaining above 90 degrees Friday. Thunderstorms are also likely both evenings, with the potential for heavy downpours and wind gusts of 30 to 40 mph.
City officials warned that the combination of heat and storms could create hazardous conditions, including localized flooding, downed tree limbs and power disruptions.
“As climate change makes extreme weather more frequent and more intense, New Yorkers need to prepare,” Mayor Zohran Kwame Mamdani said, urging residents to sign up for Notify NYC alerts and plan ahead for cooling and shelter options.
The city will open more than 600 cooling centers Thursday and Friday, offering air-conditioned spaces such as libraries, community centers and other public facilities. Officials advised residents without air conditioning to seek out cool spaces including malls, museums or designated cooling centers.
Emergency Management Commissioner Christina Farrell emphasized the importance of hydration and limiting outdoor activity during peak heat hours. Health Commissioner Dr. Alister F. Martin said older adults and people with chronic conditions face higher risks during extreme heat and urged New Yorkers to check on vulnerable neighbors.
The city has activated its heat and flash flood emergency plans and is coordinating with local, state and federal agencies. Crews are clearing catch basins to reduce the risk of street flooding, and outreach teams are increasing efforts to assist people experiencing homelessness during “Code Red” heat alerts.
Officials also warned residents to avoid strenuous activity during the hottest parts of the day, drink plenty of water and never leave children or pets in parked vehicles. Beachgoers were advised to swim only when lifeguards are on duty and to follow safety warnings, particularly as thunderstorms approach.
New Yorkers can find nearby cooling centers and heat safety information by visiting the city’s “Beat the Heat” website or calling 311. Residents can also receive emergency alerts by texting NOTIFYNYC to 692-692.
Authorities said they will continue to monitor conditions as the heat wave and storm threats develop.