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  2. International Fujita scale - Wikipedia

    en.wikipedia.org/wiki/International_Fujita_scale

    A unique feature of the International Fujita scale compared to the Fujita or Enhanced Fujita scale is a new damage indicator based on measured wind speeds. For the IF scale , only wind speeds measured at or below 10 metres (11 yd) can be used to determine a rating.

  3. Fujita scale - Wikipedia

    en.wikipedia.org/wiki/Fujita_scale

    The rating of any given tornado is of the most severe damage to any well-built frame home or comparable level of damage from engineering analysis of other damage. Since the Fujita scale is based on the severity of damage resulting from high winds, a tornado exceeding F5 is an immeasurable theoretical construct.

  4. Enhanced Fujita scale - Wikipedia

    en.wikipedia.org/wiki/Enhanced_Fujita_scale

    Intensity cannot be determined due to a lack of information. This rating applies to tornadoes that traverse areas with no damage indicators, cause damage in an area that cannot be accessed by a survey, or cause damage that cannot be differentiated from that of another tornado. [4] N/A EF0: 65–85: 105–137 52.82% Minor damage.

  5. TORRO scale - Wikipedia

    en.wikipedia.org/wiki/TORRO_scale

    TORRO claims it differs from the Fujita scale in that it is "purely" a wind speed scale, whereas the Fujita scale relies on damage for classification, but in practice, damage is utilised almost exclusively in both systems to infer intensity. That is because such a proxy for intensity is usually all that is available, although users of both ...

  6. Waffle House Index - Wikipedia

    en.wikipedia.org/wiki/Waffle_House_Index

    A Waffle House location may close in preparation for an incoming storm for the safety of its customers and employees, which is unrelated to actual storm damage. The intent of the Waffle House Index is to measure how quickly a location reopens after the storm passes. The quicker the reopening, the less overall damage the area sustained in the storm.

  7. Tornado intensity - Wikipedia

    en.wikipedia.org/wiki/Tornado_intensity

    Tornado damage to a house in Oklahoma County, Oklahoma, hit during the Tornado outbreak of May 10–13, 2010. Tornado intensity is the measure of wind speeds and potential risk produced by a tornado.

  8. Torino scale - Wikipedia

    en.wikipedia.org/wiki/Torino_scale

    Graphical representation of the Torino scale. The sizes are approximate. Energy is in TNT equivalent.. The Torino scale is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and comets.

  9. List of F4 and EF4 tornadoes (2000–2009) - Wikipedia

    en.wikipedia.org/wiki/List_of_F4_and_EF4...

    Most of the damage caused by this tornado was caused by F2-F3 winds in a primarily residential area of Granite Falls. However, a single F4 damage indicator was given based on the twisted wreckage of an overturned railroad car. The tornado caused $20 million (2000 USD) in damage. [7] NWS: September 20 2000 United States Ohio: Xenia: 1 (100 injuries)