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Storms/hail poss.tomorrow in east and south of Mainland

Tomorrow skies are set to darken over much of the South Island as an incoming system bears down on New Zealand.

There’s a risk of thunderstorms and hail developing in the east and south.

The MetService have issued a severe thunderstorm outlook tomorrow….

As cold air aloft moves eastwards across the South Island, unstable conditions prevail in many South Island places.
In Westland, Buller and northwest Nelson, a low risk of thunderstorms persists into the afternoon.
In the east, surface temperatures are expected to rise ahead of a cooler southerly change, and local wind convergence is likely to produce showers.

From the Catlins, through Clutha, Dunedin, eastern Otago and into the Canterbury Plains and foothills, there is a moderate risk of thunderstorms.
Any thunderstorms that do form here are likely to be accompanied be heavy rain of up to 25mm/hr, and by hail of 5 to 15mm in diameter. Storms are forecast to move quite slowly, hence significant accumulations of hail could occur.
A low risk extends into southern Southland and the Mackenzie Basin.

We’ll be monitoring the situation and update it as necessary.


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