HOULTON — The National Weather Service says Memorial Day’s harsh weather in northern Maine included a small tornado that touched down in Houlton.

A meteorologist for the National Weather Service in Caribou said the tornado touched down near Ludlow Road in the Canada border town on Monday afternoon. The tornado caused minor damage, including knocking down some trees in the area.

Meteorologists rated the tornado an “F0″ on the Fujita scale, which is the weakest category on the six-point scale.

Monday’s weather also include gusts topping 40 mph, a funnel cloud that did not touch down and hail more than an inch in diameter that accumulated up to three inches deep in some areas. There were unconfirmed reports of crop damage from the hail.

There were scattered storms across northern New England. Officials said one of the biggest storms passed just south of Caribou during the city’s parade and wreath-laying ceremony.

Another storm in Hopkinton, N.H., produced hail the size of pingpong balls Sunday.