Your home may have the following issues

Missing shingles is the number one tell-tale sign that your roof has experienced some sort of weather-related damage. This will be easy to identify from the street and could cause you to be dropped by your insurance company if not remedied quickly. 

Unsealed shingles can become lifted by sustained by wind gusts greater than 35 mph especially if your roof is 15-20 years old or more. 

Shingles that have been lifted repeatedly by strong winds will result in granule loss at the top. This is a clear way to determine wind damage on your roof but is usually not visible from the street. 

Hail damage although rare in many instances will significantly weaken the integrity or your roof at any age and usually will result in the need for a roof replacement. 

Flashing that is missing or damaged will be easy to observe and should be included on any weather-related insurance claim for repair or replacement. 

Missing, lifting, or creased shingles can result in leaks in your home. It is important to get leaks addressed right away so that insurance will not consider the issue "neglect" and refuse to pay your claim.