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  2. Hazardous seas warning - Wikipedia

    en.wikipedia.org/wiki/Hazardous_seas_warning

    gale warning remains in effect until 2 am pdt saturday... the hazardous seas warning is now in effect until 5 am pdt sunday. a gale warning remains in effect until 2 am pdt saturday. a strong front moving through the waters today will bring south winds of 35 to 40 kt with occasional gusts near 50 kt to the area.

  3. Severe weather terminology (United States) - Wikipedia

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

    Under this system, the warning product will include text denoting the specific hazard (i.e., 60 mph wind gusts and quarter size hail) and applicable sourcing (either via indication from Doppler weather radar, or visual confirmation from storm spotters or other emergency management officials) and the level of impact to life and/or property.

  4. Hazardous seas watch - Wikipedia

    en.wikipedia.org/wiki/Hazardous_seas_watch

    A Hazardous Seas Watch is issued by the National Weather Service of the United States when there is an increased threat of high wave heights and/or wave steepness values reach a certain criteria, but the occurrence, timing, and/or location are still uncertain, though the area of concern is known. The criteria are set by the local forecast offices.

  5. Gale warning - Wikipedia

    en.wikipedia.org/wiki/Gale_warning

    The National Weather Service issues a storm warning for higher winds of 48 knots (89 km/h; 55 mph) to 63 knots (117 km/h; 72 mph) at sea. In the event of a tropical cyclone, however, a tropical storm warning replaces both the gale warning and the storm warning. In this type of situation, the storm warning maritime flag is also used in lieu of ...

  6. Significant weather advisory - Wikipedia

    en.wikipedia.org/wiki/Significant_weather_advisory

    The stylistic product text for thunderstorm-based special weather statements was concurrently reformatted to follow the Impact Based Warning format used for severe convective warnings since 2012, adding and separating out key information about the threat(s), including the threat type/s, information source, and general impacts from the threat/s ...

  7. Special weather statement - Wikipedia

    en.wikipedia.org/wiki/Special_weather_statement

    Local Weather Forecast Offices (WFO) of the National Weather Service may issue a Special Weather Statement to alert of a specified hazard that is approaching or below warning or advisory criteria, that does not have a specific alert product code of their own (such as for widespread funnel clouds with limited to no threat of complete tornadogenesis, the likelihood of landspouts, or strong ...

  8. Particularly dangerous situation - Wikipedia

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

    A watch or warning bearing the phrase is referred to as a PDS watch or PDS warning. First used by the Storm Prediction Center (SPC), a national guidance center of the National Weather Service , for tornado watches , the phrase was later applied to other severe weather watches and warnings by the agency's regional forecast offices.

  9. GHS hazard pictograms - Wikipedia

    en.wikipedia.org/wiki/GHS_hazard_pictograms

    a signal word – either Danger or Warning – where necessary hazard statements , indicating the nature and degree of the risks posed by the product precautionary statements , indicating how the product should be handled to minimize risks to the user (as well as to other people and the general environment)