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Severe thunderstorm warning SVR – A severe thunderstorm is indicated by Doppler weather radar or sighted by Skywarn spotters or other persons, such as local law enforcement. A severe thunderstorm contains large damaging hail of 1 inch (2.5 cm) in diameter or larger, and/or damaging winds of 58 mph (93 km/h) or greater.
Traffic crash reports are entered into a database that is shared by both departments. This Base Transportation Reporting System (BTRS) allows ODOT to review the number, frequency, and severity of accidents that occur on its system. Traffic engineering is then used to establish safety threshold numbers and signal areas of concern for traffic ...
See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...
Other important factors that impact this device's usefulness are how effectively a radar detector can filter out annoying false alarms caused by random non-police radar signals, the simplicity of ...
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Due to the size limitations of the modern compact and ultra-compact cameras, especially digital cameras, the distance between the lens and the built-in flash has decreased, thereby decreasing the angle of light reflection to the lens and increasing the likelihood of light reflection off normally sub-visible particles. Hence, the orb artifact is ...
Two men faced arraignment Monday in Boston, accused of conducting a "hazardous drone operation" too close to Logan International Airport as concerns over airspace safety and national security ...
In the United States and a few other countries, Doppler capable weather radar stations are used. These devices are capable of measuring the radial velocity, including radial direction (towards or away from the radar) of the winds in a storm, and so can spot evidence of rotation in storms from more than a hundred miles (160 km) away. A supercell ...