What are severe weather advisories?

Severe weather advisories are notifications that inform the public about potentially dangerous weather conditions that may arise. This could include various types of severe weather such as thunderstorms, tornadoes, heavy rain, or extreme temperatures. The primary goal of these advisories is to raise awareness and prompt preparedness among the affected population, allowing individuals to take necessary precautions to stay safe.

In this context, the other options do not represent the nature of severe weather advisories accurately. While warnings for heavy snowfall may be a specific type of notification, it doesn't encompass the broader range of weather conditions covered by severe weather advisories. Similarly, alerts for favorable weather conditions and information on seasonal weather trends fall outside the scope of what severe weather advisories aim to convey, as they do not signal potential danger or adverse impacts. Thus, the correct answer effectively captures the essence of severe weather advisories in informing the public about possible risks associated with severe weather events.