What do hurricanes cause

During just one hurricane, raging winds can churn out about half as much energy as the electrical generating capacity of the entire world, while cloud and rain formation from the same storm might release a staggering times that amount.

Less than one percent of algal blooms actually produce toxins. Not all algal blooms are harmful, and some may actually be beneficial. Phytoplankton are microscopic algae that form the base of the marine food web, and therefore, all other life in the ocean relies on them. Blooms can also be good indicators of environmental changes not only in the water, but also on land. Hurricanes: Preparedness, Response, Recovery. Ocean Today: Fuel for the Storm. Storm surge and large battering waves can result in large loss of life and cause massive destruction along the coast.

Flooding from heavy rains is the second leading cause of fatalities from landfalling tropical cyclones. Widespread torrential rains associated with these storms often cause flooding hundreds of miles inland.

This flooding can persist for several days after a storm has dissipated. Tornadoes can accompany landfalling tropical cyclones. These tornadoes typically occur in rain bands well away from the center of the storm. Hurricanes gather heat and energy through contact with warm ocean waters. Evaporation from the seawater increases their power. Hurricanes rotate in a counter-clockwise direction around an "eye" in the Northern Hemisphere and clockwise direction in the Southern Hemisphere.

The center of the storm or "eye" is the calmest part. All Atlantic coastal areas, including New Hampshire, are subject to hurricanes or tropical storms. Historically, the most active time for hurricane development is mid-August through mid-October. Classification: Hurricanes are classified into five categories according to the Saffir-Simpson Hurricane Wind Scale, based on wind speed and potential to cause damage:.

Familiarize yourself with the terms to the right to help identify hazards associated with hurricanes. Watches and warnings can be issued, not only for hurricanes, but for tropical storms that pose a risk to an area as well.

During a hurricane or tropical storm watch threat of hurricane or tropical storm conditions within 48 hours , monitor local radio or television stations for official emergency information and instructions.

You can also find detailed information about hurricane hazards on the National Weather Service National Hurricane Center website and their Twitter and Facebook.

Hurricanes cause heavy rains that can cause extensive flood damage in coastal and inland areas. Everyone is at risk and should consider flood insurance protection. Flood insurance is the only way to financially protect your property or business from flood damage. To learn more about your flooding risk and how to protect yourself and your business, visit the Federal Insurance and Mitigation Administration NFIP website.

If you are under a hurricane or tropical storm warning, it means that it is expected to affect your area within 36 hours. It is important to be aware and knowledgeable on what's happening, listen to news reports, secure important items to higher ground and get ready to make the decision on whether you need to evacuate. If you are advised to evacuate, do so immediately.

Evacuation is simple and safer before the hurricane arrives. Don't forget your emergency kit, which should include your Emergency Contacts Card and your Family Emergency Plan which includes your evacuation location options. Have your evacuation plan ready, and follow recommended routes. Know that flash flooding can occur. If there is any possibility of a flash flood, move to higher ground right away. Do not wait for instructions to move. If you are unable to evacuate, go to your safe room.

If you do not have one, follow these guidelines:. After the impact of a hurricane or tropical storm, stay alert for extended rainfall and flooding, even after the hurricane or tropical storm has weakened. Portable Document Format. Visit nh. Hurricanes A hurricane is a type of tropical cyclone or severe tropical storm.

A typical cyclone is accompanied by thunderstorms, and a counterclockwise circulation of winds near the earth's surface. A hurricane has maximum sustained winds of 74 mph or higher. A tropical storm has sustained winds of mph.

This is a simple way of keeping each member of the family informed on critical information: where to reconnect should you become separated, who to call, and what you will do should an earthquake occur. Prepare an Emergency Kit. The Emergency Kit should be easily accessible should you and your family be forced to shelter in place stay at home for a period of time. Turn off utilities if instructed to do so.

Otherwise, turn the refrigerator thermostat to its coldest setting and keep its doors closed. Keep rain gutters and downspouts clear of debris. Close and lock all windows. If possible, cover all of your home's windows. Permanent storm shutters offer the best protection for windows. Tape does not prevent windows from breaking. Install straps or additional clips to securely fasten your roof to the frame structure. This will reduce roof damage.