| Tag (warning type) | Meaning |
|---|---|
| No tag (all warnings) | Base threshold to issue a Warning has been met — radar or reliable reports indicate a dangerous weather hazard is occurring or developing. |
| SIGNIFICANT (Snow Squall) | Intense snow squall with a substantial threat to safe travel is expected. |
| CONSIDERABLE (Flash Flood, Tornado, Severe Thunderstorm) | An unusually dangerous weather hazard that poses a considerable threat to life and property is likely ongoing. |
|
CATASTROPHIC (Flash Flood, Tornado)
|
An extremely dangerous weather hazard capable of catastrophic damage and a severe threat to human life is likely ongoing. Warning includes the phrase “FLASH FLOOD or TORNADO EMERGENCY.” |
|
DESTRUCTIVE |
An extremely dangerous thunderstorm capable of destructive hail and/or wind and a severe threat to human life and property is likely ongoing. |
Source Information Tags
| [Hazard]...RADAR INDICATED | A dangerous weather hazard is suggested by radar but is not confirmed. |
| [Hazard]...OBSERVED | Evidence of an ongoing dangerous weather hazard is confirmed by radar or reliable reports (trained spotters, law enforcement, media, credible observers). |
Additional types of tags:
