Special marine warning
A special marine warning (SAME code SMW) is a warning issued by the U.S. National Weather Service for potentially hazardous marine weather conditions usually of short duration (up to 2 hours) producing sustained marine thunderstorm winds or associated gusts of 34 knots or greater; or hail 3/4 inch or more in diameter; or waterspouts affecting areas included in a coastal waters forecast, a nearshore marine forecast, or a Great Lakes open lakes forecast that is not adequately covered by existing marine warnings. It is also used for short duration mesoscale events such as a strong cold front, gravity wave, squall line, etc., lasting less than 2 hours and producing winds or gusts of 34 knots or greater.[1]
References
- ^ "Special Marine Warning Definition". NWS. Retrieved 28 September 2013.
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storms
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Tornado |
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Marine thunderstorm |
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weather
Advisories |
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Winter storm |
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Blizzard/blowing snow |
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Heavy snow | |
Lake-effect snow | |
Snow squall | |
Ice | |
Avalanche |
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cyclones
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Hurricanes | |
Typhoons |
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Cyclones |
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Storm surge |
- Hurricane local statement
- Tropical storm local statement
- Tropical depression local statement
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Flash flood | |
Coastal flood | |
Lakeshore flood |
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River flood | |
Urban and small stream flood |
temperature
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Freeze |
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and
coastal
weather
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Gale | |
Storm | |
Hurricane-force wind | |
Hazardous seas | |
Freezing spray |
- Marine weather statement
- Rip current statement
- Beach hazards statement
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Gale-force winds | |
Major hurricane-force winds |
particulates
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Ash |
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Air pollution |
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- Red flag warning
- Fire warning
- Evacuation immediate
- Fire weather watch
used by NWS
- Beaufort (wind)
- Enhanced Fujita (tornadoes)
- Saffir–Simpson scale (tropical cyclones)
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