HAMPTON, N.H. —

A developing coastal storm will bring rain and gusty winds to parts of New Hampshire from Sunday evening into Monday.

The heaviest rain looks to fall across the southern half of the state, with overall impact at the coast expected to be low. However, a high surf advisory will take effect Monday morning.

The biggest concern is wind, with gusts that could reach up to 35 mph.

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Unitil, which serves thousands of customers on the Seacoast, said it is closely monitoring the storm and preparing for possible power outages.

"Our main concern is really the wind. With the wind, fallen branches and trees are a concern that could result in outages. But we're going to continue to monitor the storm an

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