; (5) conduct cost benefit analysis of forecasts and warnings improvement alternatives developed through the hurricane forecast improvement program under section 104; and (6) conduct risk assessments for pre-, during, and post-storm periods in regions and communities with significant elderly populations, including retirement communities. . 404. National Weather Service communications improvement (a) Improvement of NWS instant messaging service The Director of the National Weather Service shall improve the instant messaging service used by personnel of the National Weather Service by implementing, not later than October 1, 2027, a commercial off-the-shelf communications solution that replaces the instant messaging service commonly referred to as NWSChat . (b) Requirements The communications solution implemented under this section shall— (1) be hosted on the public cloud; and (2) satisfy requirements set forth by the Director to ensure such solution— (A) best accommodates future growth; (B) performs successfully with increased numbers of users; (C) is easy to use for the majority of users; and (D) is similar to systems already in commercial use. (c) Funding From amounts made available for Operations, Research, and Facilities, the Director of the National Weather Service shall allocate up to $3,000,000 for each of fiscal years 2024 through 2027 to carry out this section. 405. NOAA Weather Radio modernization (a) In general The Under Secretary shall, to the maximum extent practicable, expand coverage of the NOAA Weather Radio and ensure its reliability. In carrying out this subsection, the Under Secretary shall— (1) maintain support for existing systems serving areas not covered by or having poor quality cellular service; (2) ensure consistent maintenance and operations monitoring, with timely repairs to broadcast transmitter site equipment and antennas; (3) enhance the ability to amplify Non-Weather Emergency Messages via NOAA Weather Radio as necessary