A hurricane is a tropical cyclone with max sustained surface wind of 74 miles per hour or more. That is the reason why they never occur in northern parts of the globe. Cyclones. Meteorologists are getting better at forecasting the strength and directions of hurricanes and can roughly predict how many hurricanes will happen in each Atlantic hurricane season, information that is valuable to the insurance industry. Satellite images of two stages of Harvey: hurricane (left) vs. tropical storm (right). Most hurricanes emerge thousands of miles away from these areas – in the Atlantic ocean, close to North-West Africa. This makes the perfect conditions for developing thunderstorms and makes it a place where most hurricanes originate. Meteorologists generally divide severe tropical storms into hurricanes, typhoons, and tropical cyclones. Damage potential: moderate, Category 3: 110-130 mph. In the following article, we will see what the differences are between a hurricane and the other tropical storms. Use escape to clear. Type at least three characters to start auto complete. As the air inside the thunder clouds of a hurricane cools, it becomes denser and falls again; there is an alternating pattern of storm clouds with clear slots in between. When trade winds meet, the warm air heavily laden with water vapor is forced to rise. There are other limitations, for example, wind patterns in the outer layers of the atmosphere and the force of the rotation of the Earth mean that hurricanes can only develop around the equator, between 20 and 8 degrees north of the equator, to be precise. What to Do When a Tropical Storm Watch is Announced Hurricanes and tropical storms are both very large storms. This will lead to flash flooding from coastal southeast Texas to southwestern Louisana. Arkansas Will Pay $10,000 If You Move There. The tropical storm category is a grouping of some of the Beaufort grades. The first option will be automatically selected. This hurricane has become known as one of the most expensive natural disasters in history. The key differentiator is that a tropical storm watch means tropical storm conditions are possible (winds between 39-73 mph), which is generally less severe than hurricane conditions (winds of 74mph or higher). The difference between tropical storm and hurricane is in the wind speed of the storm. They are both of a tropical nature, and the difference between them lies in the speed of the wind. Hurricanes happen in the Caribbean and parts of the South-Eastern USA, while cyclones and typhoons – the other two types, hit other areas of the planet. What is the difference between tropical storm and hurricane? 9 Ways to Tell the Difference. Tropical depressions start as a low pressure area over the ocean which has the potential to get larger and stronger. Harvey has recently "weakened" from a Category 1 hurricane to a tropical storm, but there really isn't a difference between the two. Monster Sinkhole in Florida Swallows Pool, Forces Families to Flee, Cold or Flu? An example of a hurricane that is also a named storm would be Hurricane Harvey. In fact, this tropical storm could do as much or more damage as the hurricane did at landfall. Generally, there are three main category names of tropical storms. At this point a tropical storm is assigned with a name, depending on the area where it usually takes place. Rainfall totals are a function of forward speed rather than tropical storm or hurricane intensity. Damage potential: minimal, Category 2: 96-110 mph. An example of named storm that is NOT a hurricane is Tropical Storm Sandy. Hurricanes receive their energy from warm seas, and can only develop when the sea temperature is at least 26 degrees Celsius, developing into major hurricanes only when the sea temperature is at least 28 degrees Celsius. This is what contributes to the appearance of a hurricane as a spiral, a familiar image which is seen in satellite images of hurricanes taken from above. Can you tell the difference between the two in the graphic above? When the trade winds arrive on the curved part of the planet, there is the inception of a tropical storm, because of the rotation of the latter. How Winter Fashion Has Changed in 100 Years (PHOTOS), Eerie Vintage Photos of People Battling the Flu. Typhoons happen in the North-Western Pacific basin and in the proximity of the Philippines, China and the Marshall islands. A tropical storm is one of the most destructive weather systems on the planet Earth. Essentially, a tropical storm is a system of thunderstorms, characterized by surface circulation and accompanied by sustained winds with speeds of 39-73 miles per hour. It blew a wall of sea water (8 meters high), known as a storm surge, ahead of it, and as a result it engulfed most of the city of New Orleans. As a hurricane grows and intensifies, it develops the distinctive structure that looks like a hole (known in meteorology as “the eye”) in the middle of swirling massive clouds (known as “eyewall”, an area about 16 to 80 kilometers). Both wind speeds can do damage, and, in fact, winds as low as 40 mph can do damage to structures and even trees if the winds blow for a long enough duration or if the ground is saturated. Difference between a Twister and a Tornado, Difference between Air Cooler and Air Conditioner, Difference between Waterproof and Water-Resistant, Are generally divided into typhoons, cyclones, and hurricanes, Occur anywhere on the planet, except its northern parts, Occur in the Caribbean and parts of the South-Eastern USA, Difference between Tropical Storm and Hurricane, Category 1: 74- 95 mph. Damage potential: extreme, Category 5: more than 156 mph. (MORE: Three Reasons Slow-Moving Tropical Storms and Hurricanes Are the Worst). People in U.S. have still not forgotten the devastation that was caused by Katrina in 2005. The air starts to rise with increased pace, producing more and more thunderclouds. These happen around the Indian Ocean and the South-East Pacific. They also often attack countries like Japan, and Indonesia, Malaysia, and nearby countries. When the surface wind reaches sustained speed of over 7 miles an hour, this storm is called in meteorology a category 1 hurricane. Rainfall potential increases with a slower moving storm. Cyclones tend to appear in countries like Madagascar, India, and parts of Australia. This seems like a not a big area, but it is the area where the easterly surface winds (known in meteorology as trade winds) converge; there is a lot of moisture there. © Copyright TWC Product and Technology LLC 2014, 2020. We recognize our responsibility to use data and technology for good. Why do the categories begin at 74 mph instead of 39 mph or some other incremental wind speed? The high hurricane deductible policy offers more coverage because the high deductible for named storms will activate more frequently than hurricanes. Hurricanes (the name is derived from the Spanish word for the Caribbean God of storms – Juracan) are tropical storms that occur in the Caribbean and parts of the South-Eastern United States of America. But, these categories have no direct relationship with how much rainfall a tropical storm or hurricane will produce.