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  2. Severe weather terminology (United States) - Wikipedia

    en.wikipedia.org/wiki/Severe_weather_terminology...

    [8] [9] This enhanced form of a tornado warning is issued mainly by Weather Forecast Offices within the National Weather Service's Central and Southern Region Headquarters; a tornado emergency is the highest level of a three-tiered Impact Based Warning system for tornadoes used by all WFOs within the Central Region Headquarters, and eight ...

  3. Emergency Alert System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Alert_System

    The National Public Warning System, also known as the Primary Entry Point (PEP) stations, is a network of 77 radio stations that are, in coordination with FEMA, used to originate emergency alert and warning information to the public before, during, and after incidents and disasters. PEP stations are equipped with additional and backup ...

  4. Particularly dangerous situation - Wikipedia

    en.wikipedia.org/wiki/Particularly_dangerous...

    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.

  5. Faster alerts for California megaquakes: Early-warning system ...

    www.aol.com/news/faster-alerts-california-mega...

    That means the early-warning system could realize a quake was a magnitude 7, or higher, a few seconds earlier than before. Read more:California hasn't seen a catastrophic earthquake recently. But ...

  6. Significant weather advisory - Wikipedia

    en.wikipedia.org/wiki/Significant_weather_advisory

    References to the "significant weather advisory" and "significant weather alert" terms in First Warning—a broadcast weather alert system derived for use by local television stations—and its derivatives vary by station and market; in most cases, the system's various iterations classify the product by generic thunderstorm-specific terms that ...

  7. California earthquake early warning system: How to get it now

    www.aol.com/news/california-earthquake-early...

    Monday's magnitude 4.4 earthquake — centered near Highland Park — came with an early warning from California's quake alert system.

  8. Red flag warning issued in Northern California. How is it ...

    www.aol.com/red-flag-warning-issued-northern...

    The highest wildfire threats are in the northern and central Sacramento Valley, the National Weather Service said. Red flag warning issued in Northern California. How is it different from fire ...

  9. Weather warning - Wikipedia

    en.wikipedia.org/wiki/Weather_warning

    A weather warning generally refers to an alert issued by a meteorological agency to warn citizens of approaching dangerous weather.A weather watch, on the other hand, typically refers to an alert issued to indicate that conditions are favorable for the development of dangerous weather patterns, although the dangerous weather conditions themselves are not currently present.