![]() Visit the NOAA Weather Radio All Hazards website for a list of states and territories. You can program your weather radio to receive messages for your county. Some counties or parts of counties may not have reliable reception because of signal blockages, especially mountainous areas. Service to a county depends on reliable signal reception. NOAA weather radio broadcasts the latest weather information, including severe weather details, 24 hours a day every day of the year. NOAA weather radios can be purchased at most hardware, grocery, general merchandise, and drug stores. Violent winds and debris slamming into buildings cause most structural damage. Low pressure associated with a tornado causes a building to explode as the tornado passes overhead.įALSE: There is usually enough air leakage through building connections to equalize the inside and outside pressure. True or False? Areas near rivers, lakes, and mountains are safe from tornadoes.įALSE: No place is safe from tornadoes. If you are in the path of the storm, immediately go to your safe location. Warnings are usually issued for about 30 minutes. A warning can be issued without a tornado watch being in effect. A tornado warning means that a tornado has been sighted by storm spotters or indicated by weather radar. Watches are usually issued for 4 to 8 hours. Be alert to approaching storms when your area is under a tornado watch. Know the Difference between Watches and WarningsĪ tornado watch means that conditions are favorable for the development of tornadoes in your area. According to the Storm Prediction Center, these windstorms are associated with bands of rapidly moving showers or thunderstorms. ![]() If the winds are greater than 57 mph at most points along the path, the windstorm is considered a derecho. While the destruction may be similar to that of a tornado, the damage typically occurs in one direction along a relatively straight path. Straight-line winds may cause as much damage as a tornado. You can also sign up from several sources to receive severe weather alerts on your cell phone or mobile device. Listen to a National Oceanic and Atmospheric Administration (NOAA) weather radio, local television station, or radio station for weather information. Weather bulletins and sky conditions will indicate an approaching storm. Stay alert to weather forecasts for information about potential severe weather. Most people become aware of tornado danger through watches and warnings issued by the NWS. Learn more about thunderstorms from JetStream, An Online School for Weather from the National Weather Service. Storm watchers look for dust and debris on the ground beginning to rotate as an indication that the circulation has become a tornado. The funnel cloud becomes a tornado when it reaches the ground. A supercell thunderstorm has an organized internal structure characterized by a single, rotating updraft.Ī funnel cloud is a region of strong rotation in a thunderstorm. According to the National Weather Service (NWS), tornadoes typically form in supercell thunderstorms. Recognizing conditions that may develop into a tornado is one of the most important components of storm safety. ![]() (Photo credit: National Oceanic and Atmospheric Administration.) How Will You Know You Are in Danger? Tornadoes typically form in a supercell thunderstorm that has an organized internal structure characterized by a single, rotating updraft.
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