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Thunderstorm Watch vs. Warning
Thunderstorms are violent, short-lived weather events associated with lightning, thunder, dense clouds, heavy rain or hail, and strong, gusty winds. Thunderstorms can occur year-round and at any hour of the day.
Thunderstorm Watch vs. Warning
When thunderstorms are expected, the Weather Service may issue watches and warnings.
A Thunderstorm Watch means conditions are favorable for thunderstorms. Watches are typically issued for large geographic areas and are in effect for several hours.
A Thunderstorm Warning means thunderstorms are imminent or occurring and action should be immediate.
What to Do During a Storm
During a Severe Thunderstorm Watch:
- Listen to a NOAA Weather Radio, or local radio or television stations for updated information.
- Avoid lightning rods such as golf clubs, fishing poles, tractors, bicycles, etc.
- Be prepared to seek shelter if a severe thunderstorm is approaching. A sturdy building is the safest place to be during a severe thunderstorm.
During a Thunderstorm Warning find shelter right away!
- Pay attention to alerts and warnings.
- Unplug appliances.
- Avoid taking a bath or shower or running water for any other purpose or using a landline phone.
- Turn off the air conditioner.
Risks from thunderstorms:
- Wind damage: downed trees and power lines
- Flash flooding
- Tornadoes and powerful winds (over 50 mph)
- Damage from hail
Lightning
What to do if Someone is Struck by Lightning
Lightning is a sudden electrical discharge released from the atmosphere that follows a course from cloud to ground, cloud to cloud, or cloud to surrounding air, with light illuminating its path. Lightning’s unpredictable nature causes it to be one of the most feared weather elements.
- Call for help. Get someone to dial 911 or your local Emergency Medical Services number. Medical attention is needed as quickly as possible.
- Give first aid. If breathing has stopped, begin rescue breathing. If the heart has stopped beating, a trained person should give CPR. If the person has a pulse and is breathing, look and care for other possible injuries.
- Check for burns. The injured person has received an electrical shock and may be burned, both where they were struck and where the electricity left their body. Being struck by lightning can also cause nervous system damage, broken bones and loss of hearing or eyesight. People struck by lightning carry no electrical charge that can shock other people so they can be handled safely.
Hail
Hail is precipitation that is formed when updrafts in thunderstorms carry raindrops upward into extremely cold areas of the atmosphere causing them to freeze. The raindrops form into small frozen droplets and then continue to grow as they come into contact with super-cooled water which will freeze on contact with the frozen rain droplet. This frozen rain droplet can continue to grow and form hail.
Resources
NOAA Weather Radio All Hazards is a nationwide network of radio stations broadcasting continuous weather information directly from the nearest National Weather Service office.
Learn more about Raleigh’s Stream Monitoring and Flood Alert Systems:
Thunderstorm and Lightning Safety Tips on Ready.gov