David Lopez, newly appointed executive officer of the Hawaii Emergency Management Agency (HIEMA) recently presented an overview of Hawaii’s Critical Infrastructure Vulnerabilities. The YouTube video can be accessed here: https://youtu.be/YkcqYPIWJAU
As noted in the post below, hurricane season in Hawaii starts June 1. The following is some excellent information on hurricanes from The National Preparedness Community:
What is a Hurricane?
History teaches that a lack of hurricane awareness and preparation are common threads among all major hurricane disasters. By knowing your vulnerability and what actions you should take, you can reduce the effects of a hurricane disaster.
Hurricane hazards come in many forms, including storm surge, heavy rainfall, inland flooding, high winds, tornadoes, and rip currents. Gaining a better understanding of tropical cyclones and hurricane hazards will help to make a more informed decision on your risk and what actions to take.
Today we’re talking about high wind and inland flooding two incredibly deadly and destructive elements of hurricanes. Read, watch and share!
Inland Flooding: The Deadliest Element
When these powerful storms move over land, they lose wind strength but continue to dump massive amounts of rain into streams, rivers and lakes, posing a serious threat of inland flooding. These floods account for more than 50 percent of hurricane-related deaths each year.
Watch this short and shareable video of National Hurricane Center (NHC) Hurricane Specialist John Cangialosi discussing the deadly danger of inland flooding caused by tropical cyclones and hurricanes.
Wind Scales: Judging Hurricane Intensity
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane’s sustained wind speed. This scale estimates potential property damage. Hurricanes reaching Category 3 and higher are considered major hurricanes because of their potential for significant loss of life and damage. Category 1 and 2 storms are still dangerous, however, and require preventative measures. In the western North Pacific, the term “super typhoon” is used for tropical cyclones with sustained winds exceeding 150 mph.
The Makings of A Hurricane: Storm Surges & Storm Tides
Storm surge is an abnormal rise of water generated by a storm, over and above the predicted astronomical tides. Storm surge should not be confused with storm tide, which is defined as the water level rise due to the combination of storm surge and the astronomical tide. This rise in water level can cause extreme flooding in coastal areas particularly when storm surge coincides with normal high tide, resulting in storm tides reaching up to 20 feet or more in some cases.
Click on picture for more information on storm surge
- Click on picture for more information on storm surge
