Thunderstorm Outlook
Issued at 7:26am 1/07/2025
Valid from 7:26am 1/07/2025 to Midnight 1/07/2025
No thunderstorms or significant convection expected during this period.
Issued at 8:38am 1/07/2025
Valid from Midnight 1/07/2025 to Midday 2/07/2025
No thunderstorms or significant convection expected during this period.
Severe Thunderstorm Criteria
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 25mm/h, or more.
Large hail:
Hailstones 20mm in diameter, or larger.
Strong wind gusts (from thunderstorms):
Gusts of 110km/h (60 knots) or stronger.
Damaging tornadoes:
Fujita F1 - i.e. wind speeds greater than 116km/h (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.
