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The local forecast is for peak winds of strong tropical storm force of mph with hurricane force gusts. Winds may increase as early as Saturday afternoon. A hurricane local statement is prepared and issued by the National Weather Service Weather Forecast Offices (WFO). This statement is issued to a county and. A Hurricane Local Statement (S.A.M.E. code: HLS) is an advisory issued by the National Weather Service to provide an update about hurricane conditions in a.
Example Hurricane Local Statement for Atlantic Basin.Hurricane and Tropical Storm Watches, Warnings, Advisories and Outlooks
The original HLS format was often criticized for being unwieldy. Silver Spring, Maryland: Weather Bureau. Many roads and bridges will be closed once strong winds arrive. Contents show.
Hurricane Local Statement | Emergency Alert System Wiki | Fandom – Recent Posts
This emergency message is designed to provide the general public with critical information about an approaching hurricane so that you can keep yourself informed and safe and protect yourself against this potential hazardous weather event. A hurricane is a type of tropical cyclone or storm system that rotates around an area of low pressure. When this happens, strong winds and heavy rain can occur.
These large, swirling storms can produce winds of 74mph or higher. The severity of a hurricane is classified into five grades, and categories three to five are considered major storms. Meteorologists will use the Saffir-Simpson Hurricane Wind Scale to determine the speed and potential impacts of a hurricane. According to the Saffir-Simpson Wind Scale, these are the five categories of hurricanes and what features and impacts to expect from each tropical cyclone. A category one hurricane has very dangerous winds and may produce some damage.
Sustained winds for category one hurricanes are between mph. These hurricanes may cause damage to gutters, roofs, shingles, and cladding. Trees are likely to be broken, and those that have shallow roots may become uprooted. There is also a high chance of damage to power lines and poles, which may cause outages across the region.
Category two hurricanes are more severe. These hurricanes can produce winds between mph, and extensive damage is likely. The framing and siding of even the most well-constructed homes may be damaged, and many trees are likely to become uprooted.
Most category two hurricanes will cause an almost total loss of power in the region that could last days or weeks, depending on the severity of the damage. A category three hurricane is described as devastating. With a category three hurricane, you can expect to see wind speeds of between mph, and most homes will experience major structural damage.
Many trees will be uprooted, and road blockages are highly likely. Water and electricity supplies will be out of action for days or even weeks.
Category four hurricanes are catastrophic and rare. Wind speeds will be between mph, and most roof structures and the exterior walls of many properties will be demolished, trees will be uprooted, and most power poles may be drowned by flooding. Because of the extent of the damage, power outages will last between weeks and months, and the majority of the affected area will be uninhabitable for months while recovery efforts take place.
With a category five hurricane, wind speeds can reach mph or higher. Most homes will be destroyed, with roof failure and collapse inevitable. Residential areas will become wholly isolated and uninhabitable due to debris, fallen trees, and power poles, and supply outages may last for months. For a hurricane to develop, the right conditions must be present.
There are six accepted conditions responsible for hurricane development. These are:. If temperatures are below this, a hurricane will not form, or it will weaken significantly once it moves across the water with a low temperature.
In the tropical East Pacific and the tropical Atlantic, temperatures are often much higher than this. The distance from the equator must also be at a certain level for a hurricane to form. The corioles force is at its highest next to the poles and at its lowest by the equator, meaning that hurricanes are unable to form within a 5-degree latitude of the equator. Thirdly, there must be the correct saturated lapse rate gradient close to the central rotation of the storm.
This lapse rate will make latent heat release at a high rate. Because hurricanes are warm-core storms, the lapse rate surrounding the eyewall must be unstable to make the air rise and condense any water vapor. One of the most important factors that cause a hurricane to develop is low vertical wind shear.
The fifth ingredient needed to produce a hurricane is a high humidity value present on the surface and middle of the atmosphere. This is for two reasons: firstly, the dry air will cause water to evaporate, which reduces the structure of the hurricane and impedes its movement.
Secondly, the dry air in the middle can cause a trade wind inversion. A trade wind inversion will create warmer temperatures and dryness in the middle of the atmosphere because of the warming and sinking of the air in the middle. This prevents the deep convention and lapse rate needed to produce a hurricane. The final factor needed to produce a hurricane is a tropical wave. If a tropical wave encounters the right conditions, such as those outlined in the first five ingredients, the tropical wave will begin to develop into either a tropical storm or a hurricane.
A hurricane warning will be distributed by local TV and radio stations and online. Local meteorologists will forecast the impacts for their own areas, and the National Hurricane Centre will issue a broader forecast for the region. A local meteorologist is the only person with the authority to issue a hurricane warning or a hurricane watch in your area.
These notices are usually given at 6am, 12 noon, 6pm, and midnight. Local meteorologists may also provide links to this statement on their own websites. This statement is issued to a county and gives the area specific details and guidance for their Country Warning Area CWA about an approaching or imminent hurricane. If you ever receive a hurricane local statement, do not ignore the message.
You should read this guidance carefully and take it seriously. These statements are designed to help you prepare for a hurricane, and the information you receive will help you keep as safe as possible in these conditions. These local statements are produced for the public in the United States and will be distributed to areas expected to be affected by the forecast.
These statements will often include information from local officials, including any measures being taken to protect property and life. If these measures are yet to be implemented, the statement may include recommendations for precautionary measures in areas expected to be hit by the hurricane.
The following example of a hurricane local statement was sourced from the following web archive. Hurricane Wilma was the most intense hurricane or tropical cyclone ever documented in the Atlantic.
It affected Mexico, Cuba, and the U. Its highest wind speed was mph and caused a total of 87 fatalities. As you can see, this section always contains a general overview of the most critical points. Essentially , the top section of a hurricane local statement is a headline summary of the main events. The above section of the hurricane local statement provides more information than the initial headline. This is included to ensure that the most up-to-date information about the hurricane is not missed.
If you need to prepare and protect yourself against a hurricane quickly, this section will give you the most critical information you need in real-time.
Now the most up-to-date information has been given and an overview of the situation has been provided, the hurricane local statement goes into further detail about the potential impacts of the hurricane.
As you can see, this information is split into several sections, including:. It may also give an overview of how the current winds are moving and their severity. Marine Impacts: The marine impacts section will give guidance to craft on the water. It will also advise sailors and craft where the winds are coming from.
Storm Surge Flood and Storm Surge Tide Impacts: This section of the statement will detail expected storm tide heights and where this will be most severe. It may also describe what times weather forecasters have projected storm surge floods and storm surge tides to be at their worst. Tornado Impacts: The tornado section will advise whether tornados are expected and whether they have been spotted. If tornados are expected, this section will also suggest what time they may hit the region.
Rainfall Impacts: This part of the statement will advise how much rainfall is expected in the region during the event. If severe flooding is possible, residents may be advised to evacuate or take action to protect their property. The final part of the statement will tell the general public where to access any future updates about the hurricane. In this example, the public is told to visit the national weather service website for the most up-to-date statements.
A hurricane local statement is the longest text-based statement issued by the National Weather Service. The reason these statements are so long is that these tropical systems can present significant threats to life and property. Planning ahead could involve:. Your next step should be to gather emergency supplies. Before, during, and after a hurricane hits, you may need supplies to keep your family safe.
You may also be unable to drive after a hurricane if your vehicle or the roads have been damaged. To ensure you can keep you and your family safe before, during, and after a hurricane, you should prepare the following items:.
Alerts from the National Weather Service will be issued on the tv, radio, or online. If a hurricane is predicted to affect your region, there are two types of alerts that may be issued. These alerts are:. Hurricane Watch: A hurricane watch alert means that hurricane conditions are possible but not inevitable. These hurricane watch alerts are usually issued 48 hours before the hurricane is expected to start.
Hurricane Warning: A hurricane warning is more serious than a hurricane watch alert. A hurricane warning suggests that these tropical strength winds are expected in your region, and this warning will usually be given 36 hours before a storm is likely to occur. This will give you the time you need to prepare, protect yourself and your property, and evacuate if necessary.
This preparation could involve:. Before the hurricane hits, you should also be taking action to protect and prepare your property. Getting your home ready for the hurricane may include:.
Covering and securing your windows and doors to keep you safe from broken glass. You could use storm shutters or even nail plywood to the frame to protect your windows. Check the batteries in your carbon monoxide detector to protect yourself and your family against CO poisoning.
