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  2. Severe weather terminology (United States) - Wikipedia

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

    The surface relative humidity and 10-hour fuel moisture criteria meriting a fire weather watch may vary depending by state based on local vegetation, topography and distance from major water sources, though forecast sustained winds are usually expected to be 20 miles per hour (32 km/h) or greater.

  3. List of severe weather phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_severe_weather...

    Fire. Wildfire or bushfire (ignition of wildfires is sometimes by lightning strike, especially in "dry thunderstorms") Firestorm; Fire whirl, also called firenado ...

  4. Glossary of meteorology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_meteorology

    Also actiniform. Describing a collection of low-lying, radially structured clouds with distinct shapes (resembling leaves or wheels in satellite imagery), and typically organized in extensive mesoscale fields over marine environments. They are closely related to and sometimes considered a variant of stratocumulus clouds. actinometer A scientific instrument used to measure the heating power of ...

  5. Video shows National Guard plane drop fire retardant on ...

    www.aol.com/video-shows-national-guard-plane...

    The components of long-term fire retardants are mainly salts – typically agricultural fertilizers – that "alter the way the fire burns, decreases the fire intensity, and slows the advance of ...

  6. Severe weather - Wikipedia

    en.wikipedia.org/wiki/Severe_weather

    Severe weather is any dangerous meteorological phenomenon with the potential to cause damage, serious social disruption, or loss of human life. [1] [2] [3] These vary depending on the latitude, altitude, topography, and atmospheric conditions.

  7. Rainstorms could bring more misery for California fire evacuees

    www.aol.com/news/rainstorms-could-bring-more...

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  8. Firestorm - Wikipedia

    en.wikipedia.org/wiki/Firestorm

    The "pyroCb" is a fire-started or fire-augmented thunderstorm that in its most extreme manifestation injects huge abundances of smoke and other biomass-burning emissions into the lower stratosphere. The observed hemispheric spread of smoke and other biomass-burning emissions has known important climate consequences.

  9. Storm - Wikipedia

    en.wikipedia.org/wiki/Storm

    A storm seen at the Baltic Sea near the island of Öland, Sweden.. A storm is any disturbed state of the natural environment or the atmosphere of an astronomical body. [citation needed] It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning (a thunderstorm), heavy precipitation (snowstorm, rainstorm), heavy freezing rain ...