Thunderstorms

Thunderstorms have the potential to emerge abruptly, bringing about a range of hazards such as power disruptions, intense precipitation, hail, and forceful winds. These meteorological events commonly affect Maryland during the late spring, summer, and early fall seasons, often occurring when contrasting cold and warm air masses collide.

Know the Alerts

Thunderstorm Watch -

BE PREPARED! A thunderstorm is possible in the area that you are in.

Thunderstorm Warning -

TAKE ACTION! A thunderstorm is happening in the area that you are in. You should go indoors or stay indoors at this time and stay away from windows.

For more information about alerts: https://www.weather.gov/safety/thunderstorm-ww

Moisture, unstable air and lift are needed for a thunderstorm.

How To Prepare for a Thunderstorm

Monitor local weather and news.
Have a plan to keep your phone charged in case of emergency.
Be prepared for a power outage.
Protect your home.
- Put away or secure items outside that can blow away.
- Secure objects that would be unsafe to bring inside such as grills and propane tanks.
- Trim or remove trees close to your house that could fall over.
- Review your home insurance policy.
- Find out if your home is prone to flooding. If so, elevate the heating system, water heater, and electrical panel.

Storm Preparedness Guide

Pay attention to weather advisories and storm warnigs.
Have a flashlight and fresh batteries.
Refuel vehicles and ensure they are in good working condition.
Have a phone that does not require an electrical outlet to use. Charge cell phones or have a car cell phone charger.
Get a lot of water and packed or canned foods that do not require refrigeration or cooking. Be sure to have a non-electric can opener.
Have a battery-powered radio to keep informed.
Endure that you have enough supply of medications, cash and other necessities.
Have a plan to check on neighbors and family members.

Warning

Weather hazard is likely occuring
Pose a threat to life/property
Take protective action

Watch

Risk of Weather hazard in near future
Could pose a threat to life/property
Have a plan of action

Stay Safe During a Thunderstorm!

During a thunderstorm, it is safest to remain indoors. Where there is thunder there will be lightning too. Follow these tips to stay safe!

Check to see if outdoor activities were cancelled.
- Tip! The St. Mary’s County Recreation and Parks announces weather closures here.
Pay attention to weather alerts.
- Tip! Sign up for Code Red Weather Alerts here to be notified of thunderstorm watches and warnings as they occur.
If flash flooding occurs, remember to turn around, don’t drown!
If you are outside and cannot get inside, avoid high ground, open spaces, and water.