retired
Register: Basis For Issuance
URI: https://codes.nws.noaa.gov/NWSI-10-803/2013/BasisForIssuance
The basis for issuing the Center Weather Advisory (CWA) product.
Contents
| Name | Notation | Description | Types | Status |
|---|---|---|---|---|
| Cancellation | Cancellation | To rescind previously issued advisory. | Concept | stable |
| Freezing Precipitation | FreezingPrecipitation | Freezing precipitation is occurring within CWSU area of respo... | Concept | stable |
| Icing | Icing | Moderate or greater icing conditions are occurring within CWS... | Concept | stable |
| Low-Level Wind Shear | LLWS | Low-Level Wind Shear conditions within 2000 feet of the groun... | Concept | stable |
| Low IFR | LowIFR | Low IFR, or worse, conditions are expected or occurring withi... | Concept | stable |
| Obscurations | Obscurations | Significant obscuration to vision due to volcanic ash, dust s... | Concept | stable |
| Precipitation Rate | PrecipitationRate | Heavy to extreme precipitation rates, either rain- or snow-fa... | Concept | stable |
| Severe Thunderstorm | SvrTstm | Severe thunderstorms are occurring within CWSU area of respon... | Concept | stable |
| Thunderstorms | Tstm | Non-severe thunderstorms are occurring within CWSU area of re... | Concept | stable |
| Turbulence | Turbulence | At least moderate turbulence is occurring within CWSU area of... | Concept | stable |
| Wind Gusts | WindGusts | Surface wind gusts at or above 30 knots are occurring within ... | Concept | stable |