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Maryland Department of Emergency Management

Great Maryland Twister Test Set For Wednesday, April 9 at 10 a.m.

The logo of the Great Maryland Twister Test, a statewide tornado drill taking place on April 9, 2025 at 10:00AM

Maryland Department of Emergency Management, National Weather Service Encourage Marylanders to Practice What to Do During a Tornado Warning; Alert Will Broadcast Over NOAA Weather Radios As Part of Maryland Severe Storms Awareness Week

HANOVER, MD (April 8, 2024) — Maryland residents are invited to participate in the Great Maryland Twister Test on Wednesday, April 9, at 10:00 a.m. to practice what to do in case the National Weather Service (NWS) issues a tornado warning. The statewide drill is being coordinated by the Maryland Department of Emergency Management (MDEM), NWS, and other partners as part of the 2025 Maryland Severe Storms Awareness Week, April 7-11, 2025.  

At 10 a.m. Wednesday, April 9, the NWS will issue a statement over National Oceanic and Atmospheric Administration (NOAA) Weather Radios about the tornado drill. Be aware, while an Emergency Alert System (EAS) test code will precede this message, the Required Monthly Test (RMT) code may not trigger some weather radios. This test code will also not trigger Wireless Emergency Alerts over cell phones. 

Schools, businesses, community groups, and individuals can practice what to do when a tornado warning is issued by NWS. While everyone is encouraged to participate in the drill on Wednesday at 10 a.m., you can practice at other times too. Families, for example, might want to practice when everyone is at home later in the day.

“Tornadoes can strike with little warning. Whether you are in school, at work, or at home, knowing the safest place to go during a tornado warning is vital and makes all the difference,” said MDEM Secretary Russ Strickland. “The Great Maryland Twister Test is a chance for families, schools, and businesses to practice their safety plans in a low-stress environment. Taking just a few minutes now to prepare can help save lives when real storms threaten.”

If NWS issues a tornado warning for your location:

  • Go to a safe shelter immediately, such as a safe room, basement, storm cellar, or a small interior room on the lowest level of a sturdy building.
  • Stay away from windows, doors, and outside walls.
  • If outside, do not go under an overpass or bridge. Lie flat in a low-lying ditch or depression away from trees and vehicles. Cover your head and neck.
  • Watch out for flying debris that can cause injury or death.
  • Use your arms to protect your head and neck. If they are close by, you can also use pillows, blankets, or couch cushions to protect those parts of your body.
  • If you are in a vehicle and you see a tornado, stay in your car, buckle up, and lower your head below the windows while covering your head with your arms and a coat or blanket if possible; or, exit the car and lie flat in a low-lying ditch or depression away from trees and vehicles. Cover your head and neck.
  • Make plans to go to a public shelter if you can’t stay home.
  • Go to NOAA Weather Radio and your local news or official social media accounts for updated emergency information. Follow the instructions of State and local officials. 

Tornadoes happen almost every year in Maryland – sometimes even violent and deadly ones. Since 2000, fatalities have been reported from tornadoes in LaPlata (Charles County), College Park (Prince George’s County), and Baltimore City. They are violently rotating columns of air that can destroy buildings, flip cars, and create deadly flying debris.

While most common during the warm season in the afternoons and evenings, tornadoes can happen anytime and anywhere in Maryland when conditions are right. They bring intense, damaging winds that are often 80-110 miles per hour, and sometimes devastating winds as great as 150-200 mph that can destroy buildings. These rotating funnel clouds that extend to the ground create a path of damage often as wide as a football field, and sometimes up to a mile wide.

In conjunction with the Maryland State Department of Education (MSDE) and the Maryland Center for School Safety (MCSS), public and private schools have been given guidance for directing students, faculty, and staff to the safest areas of their facilities during a tornado warning. Schools are being encouraged to practice during the Great Maryland Twister Test at 10 a.m. Wednesday and at other times, if needed.

The NWS Baltimore/Washington Weather Forecast Office, which covers most Maryland jurisdictions, is coordinating this statement and drill in conjunction with their colleagues at NWS Mount Holly (NJ), which covers Caroline, Kent, Queen Anne’s, and Talbot counties, and NWS Wakefield (VA), which handles Dorchester, Somerset, Wicomico, and Worcester counties. 

Marylanders are also encouraged to download the MdReady WebApp, which gives instant access to a wide array of emergency notifications and preparedness information to residents and visitors. To install the new WebApp, users can visit MdReady.maryland.gov and follow the prompt to easily add the MdReady shortcut to a mobile device home screen or to sign up for text alerts in English, Spanish, or in one of 185 languages.

Since 1950, Maryland has seen around 425 tornadoes, with 9 tornado-related deaths with over 300 injuries. To learn more about Maryland’s tornado history, visit: data.delmarvanow.com/tornado-archive.

Visit our Severe Storms Awareness Week page for more information: mdem.maryland.gov/Pages/severe-storms-week.aspx. To find more preparedness information for severe storms and other hazards, please visit the following websites: mdready.maryland.gov/know-the-threats/Pages/default.aspx, weather.gov/safety, or ready.gov. To receive text alerts, tips, and resources related to threats and hazards that may affect Maryland, text “MdReady” to 211-631, or text “MdListo” to receive alerts in Spanish.