stable
Register: Hazard Types
URI: https://codes.nws.noaa.gov/NWSI-10-811/HazardTypes
An AIRMET can be issued when any of the following weather phenomena is affecting, or in the judgment of the forecaster, is expected to affect an area of at least 3000 square miles.
Contents
| Name | Notation | Description | Types | Status |
|---|---|---|---|---|
| Freezing Level | FreezingLevel | Moderate to severe icing at altitude | Concept | stable |
| Instrument Flight Rules | IFR | Cloud ceilings less than 1000 feet AGL and/or horizontal visi... | Concept | stable |
| Icing | Icing | Moderate to severe icing is expected | Concept | stable |
| Low-Level Wind Shear | LowLevelWindShear | Non-convective low-level wind shear potential below 2000 feet... | Concept | stable |
| Mountain Obscuration | MountainObscuration | Widespread mountain obscuration due to one or more of the fol... | Concept | stable |
| Multiple Freezing Levels | MultipleFreezingLevels | When applicable, two or more altitudes where freezing precipi... | Concept | stable |
| Surface Wind | SurfaceWind | Sustained surface wind greater than 30 knots | Concept | stable |
| Turbulence | Turbulence | Altitude which moderate to severe turbulence is expected/occu... | Concept | stable |
| Turbulence (High Level) | TurbulenceHighLevel | High altitudes which moderate to severe turbulence is expecte... | Concept | stable |
| Turbulence (Low Level) | TurbulenceLowLevel | Low altitudes which moderate to severe turbulence is expected... | Concept | stable |