NEXRAD and GOES-R Radar Systems

The video discusses the limitations of the NEXRAD radar network in providing timely severe weather information due to its spacing and the curvature of the Earth. It highlights the high false alarm rate for tornadoes and introduces lightning as a reliable early warning indicator for severe storms. The video explains the use of ground-based lightning detectors and the GOES-R satellite's advanced lightning mapper, GLN, which can provide critical warning time for approaching storms.

What is a major limitation of the NEXRAD radar network?

• It cannot detect lightning.

• It has gaps in coverage due to Earth's curvature.

• It is spaced too closely together.

• It is too expensive to operate.

Why is the false alarm rate for tornadoes high with the current radar system?

• Because the radar cannot detect rain.

• Due to interference from other signals.

• Due to gaps in radar coverage where tornadoes can form.

• Because the radar is outdated.

How does lightning serve as an early warning indicator?

• It indicates the presence of strong winds.

• It is a sign of clear weather.

• It shows the direction of storm movement.

• It signals the potential development of severe storms and tornadoes.

What is the primary function of ground-based lightning detectors?

• To predict earthquake activity.

• To trace how lightning moves through the atmosphere.

• To monitor temperature changes.

• To measure rainfall intensity.

What is the significance of the intersection of lightning and cloud fronts?

• It indicates a decrease in storm intensity.

• It helps in understanding the structure of storms.

• It shows the end of a storm.

• It is unrelated to weather prediction.

What does the GOES-R satellite's advanced lightning mapper do?

• It maps atmospheric lightning across the Western Hemisphere.

• It tracks animal migration patterns.

• It forecasts daily weather conditions.

• It measures ocean temperatures.

How does the GOES-R satellite contribute to storm warnings?

• By measuring wind speeds at ground level.

• By providing real-time images of cloud formations.

• By predicting the exact path of tornadoes.

• By offering critical minutes of warning time for severe storms.

What is the role of the GLN in the GOES-R satellite?

• To measure air pollution levels.

• To track volcanic eruptions.

• To map lightning activity in the atmosphere.

• To monitor solar flares.