Weather and Meteorology - Glossary
Included in this glossary you'll find terms related to our public forecasting program, weather observations and unique terminology that is of Environment Canada's hurricane centre and ice service products.
- Severe Thunderstorm Warning
A warning issued by Environment Canada’s Meteorological Service (MSC) when at least one thunderstorm that produces hail large enough to cause damage (at least 2 cm in diameter), heavy rain, and/or damaging winds, is imminent. This is indicated by radar and/or observation reports.
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