What is hail?


Hail is a form of precipitation that occurs when updrafts in thunderstorms carry raindrops upward into extremely cold areas of the atmosphere where they freeze into balls of ice. Hail can damage aircraft, homes, and cars, and can be deadly to livestock and people.

How does hail form?

Hailstones grow by colliding with supercooled water drops. Supercooled water will freeze on contact with ice crystals, frozen raindrops, dust or some other nuclei. Thunderstorms that have a strong updraft keep lifting the hailstones up to the top of the cloud where they encounter more supercooled water and continue to grow. The hail falls when the thunderstorm’s updraft can no longer support the weight of the ice or the updraft weakens. The stronger the updraft the larger the hailstone can grow.

Hailstones can have layers like an onion if they travel up and down in an updraft, or they can have few or no layers if they are “balanced” in an updraft. One can tell how many times a hailstone traveled to the top of the storm by counting the layers. Hailstones can begin to melt and then re-freeze together – forming large and very irregularly shaped hail. How does hail fall to the ground? Hail falls when it becomes heavy enough to overcome the strength of the updraft and is pulled by gravity towards the earth. How it falls is dependent on what is going on inside the thunderstorm. Hailstones bump into other raindrops and other hailstones inside the thunderstorm, and this bumping slows down their fall. Drag and friction also slow their fall, so it is a complicated question! If the winds are strong enough, they can even blow hail so that it falls at an angle. This would explain why the screens on one side of a house can be shredded by hail and the rest are unharmed! How fast does hail fall? We really only have estimated about the speed hail falls. One estimate is that a 1cm hailstone falls at 9 m/s, and an 8cm stone, weighing .7kg falls at 48 m/s (171 km/h). However, the hailstone is not likely to reach terminal velocity due to friction, collisions with other hailstones or raindrops, wind, the viscosity of the wind, and melting. Also, the formula to calculate terminal velocity is based on the assumption that you are dealing with a perfect sphere. Hail is generally not a perfect sphere! What areas have the most hail? Though Florida has the most thunderstorms, Nebraska, Colorado, and Wyoming usually have the most hail storms. The area where these three states meet – “hail alley,” averages seven to nine hail days per year. The reason why this area gets so much hail is that the freezing levels (the area of the atmosphere at 32 degrees or less) in the high plains are much closer to the ground than they are at sea level, where hail has plenty of time to melt before reaching the ground. Other parts of the world that have damaging hailstorms include China, Russia, India, and northern Italy.

When viewed from the air, it is evident that hail falls in paths known as hail swaths. They can range in size from a few acres to an area 10 miles wide and 100 miles long. Piles of hail in hail swaths have been so deep, a snow plow was required to remove them, and occasionally, hail drifts have been reported. How large can hail get? Hail is usually pea-sized to marble-sized, but big thunderstorms can produce big hail. The largest hailstone recovered in the U.S. fell in Vivian, SD on June 23, 2010, with a diameter of 8 inches and a circumference of 18.62 inches. It weighed 1 lb 15 oz.Estimating Hail SizeHail size is estimated by comparing it to a known object. Most hail storms are made up of a mix of sizes, and only the very largest hailstones pose a serious risk to people caught in the open.

  • Pea = 1/4 inch diameter
  • Marble/mothball = 1/2 inch diameter
  • Dime/Penny = 3/4 inch diameter
  • Nickel = 7/8 inch
  • Quarter = 1 inch — hail quarter size or larger is considered severe
  • Ping-Pong Ball = 1 1/2 inch
  • Golf Ball = 1 3/4 inches
  • Tennis Ball = 2 1/2 inches
  • Baseball = 2 3/4 inches
  • Tea cup = 3 inches
  • Softball = 4 inches
  • Grapefruit = 4 1/2 inches



There are some reasons why you should consider getting help from us if facing roof damage or leak in the space coast area:


 – Free inspection and estimates.

Before repairing your home, you will need to inspect it so that you can determine the extent of the damage and estimate the cost you will incur. Knowing the cost will help you with planning and get prepared before you start the process. Unlike other roofing companies in space coast Florida, which will charge you for inspection and estimates, HD Roofing is different as they offer you this for free. What you will incur is the actual repair cost only.


-15 years of roofing experience:

The experience will determine the quality of work you are going to get. You want your house to get to the original state or even better? Then we are your solution. We have a team of experienced professionals who know how to handle customers and offer quality work. We have dealt with similar cases like yours, and when repairing your roof or replacing it better than new. We are experts, and with the required tools and skills, and you can relax knowing your problems will be taken care off. Years in both residential and commercial roofing.


-Emergency services, fast response:

HD Roofing is there for emergency services, and no matter how urgent your case is, we will be there for you. We have a good response time, which is less than 24 hours, and you don’t have to look further no matter how immediate you need your roof repaired.


-Extra services:

Apart from roofing, HD Roofing will also give you extra services which will include demolition, seamless gutters, debris removal and other interior works such as painting and more. In case the damage was too severe to the extent of affecting the interior of your house, you don’t need to look for another company for the task.


To summarize, all the team at HD Roofing and Construction will do everything and leave your home at the best condition ever.  In case you suffered from 2019 hail storm, and you want to get your house back to the original state or even make it better, HD Roofing and Construction is your solution.

If you have experienced storm damage and need a reputable, local roofing contractor, HD Roofing and Construction is more than happy to come and inspect your property, we are all about customer’s satisfaction! Contact us for a no cost, no obligation consultation today!

Ever heard the term, storm chaser? Well, they really do exist and it’s not uncommon after bad storms hit an area, that unscrupulous contractors will try to take advantage of the situation. Whether they are from out of state and looking for an easy business or are ill-qualified local contractors trying to make a quick buck from those in need—far too many homeowners fall victim to predatory business practices! Most of these companies are here only to take your insurance money, perform a simple repair with promises to return, and are never seen again. To ensure your home is repaired properly, hire a local contractor that is licensed, bonded, insured and offers in-house warranties alongside any applicable product warranties.