Warn
Definition 1 of 2
Pro Tip 1/3
Urgency
Used to express immediate attention or prompt action to avoid problems. They warned us of the urgency to evacuate before the hurricane hit.
Pro Tip 2/3
Strong Advice
When 'warn' is used, the advice given is stronger than a simple suggestion. I must warn you, this route is far more dangerous at night.
Pro Tip 3/3
Public Safety
Commonly used in contexts like weather news or law enforcement for public safety. Meteorologists warned of a severe thunderstorm approaching the coast.