Office of Emergency Management
While some thunderstorms can be seen as they approach, others are not visible. Recognizing the warning signs can help
Severe Thunderstorm Watch and Warning
The National Weather Service is responsible for issuing both a thunderstorm "Watch" and thunderstorm "Warning".
THUNDERSTORM WATCH - When conditions are such that winds reach or exceed 58 miles per hour or hail three-fourths of an inch in diameter are likely to occur.
THUNDERSTORM WARNING - A severe thunderstorm meeting the "thunderstorm watch" conditions has been sighted or observed on radar.
Warning signs of thunderstorm conditions:
During a Thunderstorm
- Dark towering or threatening clouds
- Distant lightning and thunder