Extreme Heat Warning

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 103 possible.

* WHERE...Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties.

* WHEN...For the Extreme Heat Warning, from noon Wednesday to 9 PM EDT Friday. For the Extreme Heat Watch, from Friday evening through Saturday evening.

* IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* ADDITIONAL DETAILS...This has potential to be a multi-day extreme heat event with near record high temperatures and little overnight relief. This level of heat can be deadly for those without adequate cooling and hydration. Impacts to transportation infrastructure and electrical and water systems are also possible.