Watches alert residents that conditions are favorable for the development of tornadoes, while a warning means that a tornado either has been spotted or has been indicated on radar. The accuracy of tornado warnings has increased over the decades, and with the advent of Doppler weather radar, ...
The parent storm of this tornado had a broad area of reflectivity over 50 dBZ. It is found that any individual radar would miss this tornado due to attenuation for 20.4% of the possible locations, but the IP1-A network as a whole is blind to the tornado in just 12.6% of the ...
Air-Based Radar Let's take a typical radar set designed to detect airplanes in flight. The radar set turns on its transmitter and shoots out a short, high-intensity burst of high-frequency radio waves. The burst might last a microsecond. The radar set then turns off its transmitter, tur...
Size difference aside, tornado warnings are pretty much the same in both countries. ECCC and the NWS will both issue a tornado warning if meteorologists detect strong rotation on weather radar, or if spotters following a thundersto...
"After major weather events such as a destructive tornado, ECCC forecasters will often analyze atmospheric conditions, radar images, weather model data and other relevant information to review the event and look for potential ways to improve forecast performance," said Bayar...
(If your car is struck by a tornado, we really can't help you.) Let's look at those one at a time: Rain: If the weather has been dry for a while, a layer of oil can build up on the road which, when combined with a sudden rainstorm, can make the road dangerously slick. T...
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Passive sonar, on the other hand, is a means to detect ships that does not involve revealing the user’s location. It is for that reason the sonar method favored by submarines. Passive sonar simply involves listening, via sensitive hydrophones, for telltale signs of nearby ships. These signs...
Why is it that an aneroid barometer is able to measure altitude as well as atmospheric pressure? Police use Doppler radar to detect the speed of cars. Explain how the Doppler Effect is used in this application? Explain how plate positions and climate influenced the geographic ...
Dust from meteorites that crash-landed on Earth have revealed that Earth's precursor, known as proto-Earth, formed much faster than previously thought, a new study finds.