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Tornado warning TOR: A tornado is indicated by radar or sighted by storm spotters. The warning will include where the tornado is and what locations will be in its path (also automatically indicates a Severe Thunderstorm Warning). Severe thunderstorm watch SVA: Also known as a yellow box or blue box.
PDS tornado warnings are currently issued on an experimental basis by the 38 National Weather Service Weather Forecast Offices within the Central Region. [17] The criteria for a PDS warning are when a tornado on the ground has been spotted or confirmed, or a significant tornado is expected based on radar signatures.
This is a list of mesoscale discussions concerning specific ongoing tornadoes. Convective mesoscale discussions are issued by the National Oceanic and Atmospheric Administration’s Storm Prediction Center based on the National Weather Center in Norman, Oklahoma.
When that happens, knowing the difference between a tornado watch vs. warning can make a huge difference in your weather preparedness. The terms are often confused and aren't quite intuitively ...
Learn about the formation and characteristics of hurricanes, typhoons and tornadoes.
Tornado watch vs. tornado warning. The difference between tornado watches and warnings is similar to severe thunderstorms. A tornado watch means “severe thunderstorms and tornadoes are possible ...
The scale separates hurricanes into five different categories based on wind. The U.S. National Hurricane Center classifies hurricanes of Category 3 and above as major hurricanes. The Joint Typhoon Warning Center classifies typhoons of 150 mph (240 km/h) or greater (strong Category 4 and Category 5) as super typhoons.
[1] [3] When a system becomes a Category 3 hurricane with winds of between 96 and 112 kn (110 and 129 mph; 178 and 207 km/h), it is considered to be a major hurricane by the warning centers. [3] A Category 4 hurricane has winds of 113 to 136 kn (130 to 157 mph; 209 to 252 km/h), while a Category 5 hurricane has winds of at least 137 kn (158 mph ...