What are shear vortices?

Mar 31, 2023 ... A tornado warning is more severe than a watch, according to the NWS. When a warning is issued, there is imminent danger and a tornado was ... They are categorized on a scale of EF-0 (weakest) to EF-5 (strongest). While history shows us that EF-0 and EF-1 tornadoes are more common than stronger ... Tornadoes. A tornado is a violently rotating column of air that extends from a thunderstorm and comes into contact with the ground, according to the National ... May 8, 2024 ... When the NWS Storm Prediction Center issues a tornado watch for an area, it means tornado development is possible and people in the area should ... May 8, 2023 ... Tornadoes form from rotating wind in a thunderstorm, while hurricanes form from tropical storms that develop over the ocean and hit land at the coast. Maine has on average 2 tornadoes every year. The tornadoes in recent history in Maine have formed during severe summer storms within the southwestern and ... Apr 4, 2025 ... Ever mix up a tornado watch with a tornado warning? Big difference! Tornado warning in your area? Take cover. People in a warning zone need to take cover ... Jun 6, 2024 ... A watch means thunderstorms are possible in the area. Watch areas are generally large. People in the areas should pay attention to weather reports and changing ... A tornado watch is typically issued hours in advance by NOAA's Storm Prediction Center (SPC). It means that conditions are ideal for a tornado to form. A watch ... All sirens are tested at noon on the first Saturday of each month and silently tested daily internally by the system itself. Other than tests, the sirens are ...