For all John Doe knew, those events (road closed, rain + strong wind) were unlikely to happen, so planning for them would not have been rational. He did bring

For all John Doe knew, those events (road closed, rain + strong wind) were unlikely to happen, so planning for them would not have been rational. He did bring an umbrella when he saw a cloudy sky, which demonstrates good planning (even though it didn't work out in this particular case).