Weather warning side companies like Weather Watch or Instant Weather. These side companies are not associated with the government in any way. Environment Canada defines a advisory as ""an alert to cover a wide array of deteriorating weather conditions,"" a watch as ""when conditions favour that severe weather forming"" and a warning as ""severe weather is actually occurring or is imminent."" . Additionally, Environment Canada breaks down weather alerts based upon the specific type of hazardous weather. These alerts are regionally issued throughout Canada and include, but are not limited to, winter storms, extreme temperature, ice, thunderstorms (including tornadoes), wind, tsunami, tropical
Anomaly matching condition Anomaly matching condition In quantum field theory, the anomaly matching condition by Gerard 't Hooft states that the calculation of any chiral anomaly for the flavor symmetry must not depend on what scale is chosen for the calculation if it is done by using the degrees of freedom of the theory at some energy scale. It is also known as the 't Hooft condition and the 't Hooft UV-IR anomaly matching condition. There are two closely related but different types of obstructions to formulating a quantum field theory that are both called anomalies: chiral, or "Adler-Bell-Jackiw" anomalies, and 't Hooft