NWS Code Lists
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- Airmet Product Description
- Airmet Series
- Basis for Issuance
- Convection Coverages
- Convection Top Indicator
- Forecast Guidance Confidences
- Hazard Types
- Maximum Convection Top Heights
- Mesoscale Convective System Forecast Types
- Phenomenon Characteristic
- Phenomenon Frequency
- ProductStatus
- SIGMET Convection Geometry
- Tornadic Activity
- US Aeronautical Significant Weather Phenomenon
Severe Weather Phenomena
A list of meterological and hydrological phenomena which present threats to human life and property and meteorological watch offices routinely issue either "short-fused" watch or warning bulletins based on probability of occurrence. Code lists managed here include the following:Flash Flood
Hurricane
Severe Thunderstorm
Tornado
