What does a navaid with HIWAS indicate on a sectional chart?

A navaid with HIWAS indicates a Weather Information Service, which is an automated broadcast service that provides pilots with continuous updates on hazardous weather conditions. HIWAS stands for Hazardous Inflight Weather Advisory Service, and it is accessible to pilots via VHF radio frequencies. This service plays a crucial role in enhancing flight safety by informing pilots about significant weather developments such as severe thunderstorms, turbulence, wind shear, and other weather phenomena that could impact their flight.

The existence of HIWAS on a sectional chart signals to pilots that they have the availability of real-time weather advisories along their flight route, allowing them to make informed decisions and necessary adjustments to their flight plans accordingly. When flying, being aware of current weather conditions through services like HIWAS can prove vital for maintaining safety in varying weather environments.