2024 U.S. Code
Title 15 - Commerce and Trade
Chapter 121 - Flood Level Observation, Operations, and Decision Support
Sec. 9710 - Identification and support of consistent, Federal set of forward-looking, long-term meteorological information

The term "extreme weather" includes observed or anticipated severe and unseasonable atmospheric conditions, including drought, heavy precipitation, hurricanes, tornadoes and other windstorms (including derechos), large hail, extreme heat, extreme cold, flooding, sustained temperatures or precipitation that deviate substantially from historical averages, and any other weather event that the Administrator determines qualifies as extreme weather.

The term "long-term" shall have such meaning as the Director of the National Institute of Standards and Technology, in consultation with the Administrator, considers appropriate for purposes of this section.

The term "other environmental trends" means wildfires, coastal flooding, inland flooding, land subsidence, rising sea levels, and any other challenges relating to changes in environmental systems over time that the Administrator determines qualify as environmental challenges other than extreme weather.