Metro

‘Extremely dangerous’ winds in northern N.H. were behind 3 tractor-trailer wrecks

Three tractor-trailers crashed Monday while driving through “extremely dangerous” winds on Interstate 93 in Franconia, N.H., police said.

Two crashes were reported around 2:30 p.m. One tractor-trailer was traveling north when a strong wind blew the trailer off the vehicle and over the side of the road, crushing the right-side guardrail and some highway signs, police said.

Another tractor-trailer was heading south when its trailer blew off and rolled over the center guardrail into the northbound lane

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As police were dealing with those accidents, a third tractor-trailer traveling north tipped over onto a patrol vehicle with a trooper inside. The trooper was not injured, police said.

Abigail Feldman can be reached at abigail.feldman@globe.com.