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In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]
The Bureau's warnings can be separated into severe thunderstorm warnings and severe weather warnings. Severe thunderstorm warnings are issued when either a severe thunderstorm is reported or if existing thunderstorms are expected to become severe. [1] Severe weather warnings are issued when severe weather is occurring or expected in an area ...
Parts of Texas and Louisiana were under a tornado watch Thursday night as a line of thunderstorms battered the south-central U.S., threatening the region with large hail, damaging winds and heavy ...
An isolated severe storm threat spreads across central Texas to central Arkansas, western Mississippi and southern Louisiana, including cities like Dallas, Fort Worth, Little Rock and Baton Rouge.
If severe weather is detected, the National Weather Service would replace the significant weather advisory with a severe thunderstorm or tornado warning, which may warrant local communities in the path of the associated severe weather, at their discretion, to activate sirens to warn citizens not watching or listening to media to seek shelter ...
The severe thunderstorm threat this week is expected to feature a heightened flood risk in addition to all other hazards that come along with severe thunderstorms.
See Severe weather terminology (United States) and/or Severe weather terminology (Canada) for comprehensive articles concerning specific nations' warnings, watches, advisories and related terms. Pages in category "Weather warnings and advisories"
The weather service advises having multiple ways of receiving warnings as well as an action plan due to the threat of severe weather. Temperatures are expected to be in the upper 70s on Tuesday ...