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Understanding Radar Coverage Gaps in the United States

June 18, 2026 · The Clime Team
Understanding Radar Coverage Gaps in the United States

Radar coverage gaps refer to areas where weather radar systems, like the Next Generation Weather Radar (NEXRAD), fail to detect atmospheric phenomena effectively. These gaps can lead to missed or delayed weather warnings, posing risks to public safety.

What Causes Radar Coverage Gaps?

Several factors contribute to radar coverage gaps:

  • Distance from Radar Sites: Radar beams travel in straight lines, and due to Earth's curvature, the farther you are from a radar site, the higher above the ground the beam is. This means that at greater distances, the radar may miss low-level weather events. (climeradar.com)

  • Terrain Obstructions: Mountains and other geographical features can block radar beams, especially at lower elevations, leading to areas with reduced or no coverage. (climeradar.com)

  • Radar Beam Elevation: Radar beams are not perfectly flat; they gradually rise with distance. If you are situated at a lower elevation, the radar beam may pass over your location, resulting in limited or no coverage. (support.garmin.com)

Where Are These Gaps Located?

Radar coverage gaps are more common in the western U.S. Notable areas include parts of Alaska, the Rocky Mountains, and regions in the Four Corners area. These gaps can result in missed weather events, such as tornadoes, which can be particularly dangerous. (ny1.com)

How Does Clime Address Radar Coverage Gaps?

Clime leverages advanced technology to provide comprehensive weather data, even in areas affected by radar coverage gaps. By integrating multiple data sources, Clime ensures accurate and timely weather information, enhancing safety and preparedness.

Understanding radar coverage gaps is crucial for effective weather forecasting and public safety. By recognizing these limitations and utilizing advanced solutions like Clime, individuals and communities can better prepare for and respond to weather events.

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