4. Warn-on-forecast strategic plan (a) In general Not later than one year after the date of the enactment of this Act, the Under Secretary shall prepare and submit to Congress a strategic plan for developing and prioritizing the implementation of high-resolution probabilistic forecast guidance for hazardous weather and water events using a next-generation weather forecast and warning framework. (b) Plan elements The strategic plan required by subsection (a) shall include the following: (1) A discussion of— (A) the priorities and needs of vulnerable populations and National Weather Service partners