High winds, and smoke coming out of my vent pipe into the house

Tonight, we are having very high winds - up to 60 mph gusts - and my stove was trying to relight itself. But it was full of smoke and smoke was starting to come out around where the vent pipe comes out. I figured that it was because the gusts were blowing down the pipe and overcoming the combustion blower to some degree. I got rid of ash from the burnpot and scraped it, and it lit up nicely after that.

Hi Pook, my vent pipe goes up 2 stories, then out of the house horizontally through the end of a gable. It sticks outside about 3 feet then turns down slightly.

Is it safe to operate a pellet stove when it is very windy? We have always not used our fireplace during a windstorm. I ahve always wanted to ask that question.

I hope it is, I'm depending on my stove for heat. I wonder what the worst is that could happen - maybe set the hopper on fire in an extreme case ?