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Severe Thunderstorm Watch

There are no watches in force at this time.

In New Zealand, MetService classifies a thunderstorm as severe if one or more of the following criteria are met:

Heavy rain (from thunderstorms): Rainfall of 25 millimetres per hour, or more.

Large hail: Hailstones 20 millimetres in diameter, or larger.

Strong wind gusts (from thunderstorms): Gusts of 110 kilometres per hour / 60 knots or stronger.

Damaging tornadoes: Fujita F1 (wind speeds greater than 116 kilometres per hour / 63 knots) or stronger.

Note: some tornadic systems such as funnel clouds, waterspouts and small land-based tornadoes are possible with thunderstorms that may not be classified as severe.