Parking within 15 feet of a fire hydrant is prohibited, even though there is no red curb in front of the hydrant. Getting a penalty or having your vehicle towed might be the result of doing so.
The information in this answer is general in nature and is not legal or insurance advice for your specific situation. Policy language varies carrier by carrier; your declarations page is the final word. If you're unsure, call your agent before you need to file.