NHC Issues Hurricane Helene Tropical Cyclone Report

NHC Issues Hurricane Helene Tropical Cyclone Report

Timeline of Hurricane Helene (September 24-27, 2024)

  • September 20-22: A Central American Gyre (CAG) develops, bringing heavy rains to portions of Nicaragua and Honduras as it moves slowly northward.
  • September 23, 1200 UTC: The large circulation of the CAG straddles Central America and the northwestern Caribbean Sea. Deep convection begins to organize near a mid-level vorticity maximum about 130 nautical miles south of Grand Cayman. The system lacks a well-defined low-level center necessary to be a tropical cyclone.
  • September 23, 1500 UTC: The National Hurricane Center (NHC) initiates potential tropical cyclone advisories as the system is expected to become a tropical cyclone and bring tropical storm conditions to land areas within the next couple of days.
  • September 24: The system becomes Tropical Storm Helene. It enters the Gulf of America as a category 1 hurricane later in the day and turns northward.
  • September 25: Tropical storm conditions are observed over portions of the eastern Yucatan Peninsula of Mexico (including Cancun, Cozumel, and Isla Mujeres) and western Cuba. Helene develops a secondary wind maximum farther from the center.
  • September 26: Helene rapidly intensifies over the very warm Gulf waters while accelerating north-northeastward. Aircraft reconnaissance reports an eye around 0600 UTC, and a clear eye becomes visible on satellite imagery around 1800 UTC.
  • September 26, 1800 UTC: Helene intensifies into a 105-knot major hurricane, located about 150 nautical miles west-southwest of Tampa, Florida.
  • September 27, 0000 UTC: Helene reaches its peak intensity of 120 knots, located about 80 nautical miles south-southwest of the coast of the Florida Big Bend region. Its central pressure is estimated to be around 941 mb.
  • September 27, 0310 UTC: Hurricane Helene, a category 4 hurricane with winds of 120 knots and a central pressure of 939 mb, makes landfall about 10 nautical miles southwest of Perry, Florida. This is the strongest landfalling hurricane in the Florida Big Bend region since reliable records began around 1900.
  • September 27: Helene moves inland, bringing catastrophic storm surge to Florida's Gulf Coast, life-threatening wind gusts far inland across the southeastern United States, and historic rainfall leading to catastrophic flooding and landslides in the southern Appalachians. Numerous tornadoes are produced.
  • September 28, 0600 UTC: Helene's sustained winds drop below gale force.
  • September 28-29: The remnants of Helene continue to produce impacts, including tropical storm force winds and gusts across portions of the Mid-Atlantic and Ohio Valley as it becomes post-tropical and eventually dissipates.

Episoder(210)

Hurricane Catastrophe: Lower Income People Affected Disproportionately with Little Help

Hurricane Catastrophe: Lower Income People Affected Disproportionately with Little Help

Meteorology Matters examines the increasing vulnerability of low-income communities and communities of color to weather impacts, specifically hurricanes. They highlight how these groups are disproportionately affected by storm surges, flooding, and power outages due to their location in high-risk areas and lack of resources for preparedness and recovery. We discuss the need for better federal disaster relief and recovery policies that prioritize these vulnerable communities, including increased funding, streamlined application processes, and more comprehensive climate resilience measures. We also showcase examples of innovative solutions, like the Hunters Point community in Florida, which is designed to withstand hurricanes with features like solar panels, battery systems, and elevated construction but affordability keeps homes like these out of reach for almost everybody.

23 Okt 20246min

FEMA - National Flood Insurance Program’s 50% Rule

FEMA - National Flood Insurance Program’s 50% Rule

Meteorology Matters breaks down the Federal Emergency Management Agency's (FEMA) "50% rule," a regulation that impacts homeowners in flood-prone areas. This rule states that if a home (structure itself excluding the land) sustains damage exceeding 50% of its market value, it must be brought into compliance with current floodplain management standards, usually by elevating the structure. The rule is designed to discourage rebuilding vulnerable properties in flood zones and prevent the government from bearing the cost of repeated damage. The sources explain the details of the rule, how it is applied, and the debate surrounding its implementation, particularly in Florida, where communities face an ongoing threat of hurricanes and rising sea levels. Homeowners and local officials often find themselves in a difficult position, balancing the need for rebuilding with the financial burden of complying with the rule, which can make it challenging to afford housing in flood-prone areas.

22 Okt 20247min

Engineered for Hurricanes: The “Three Little Pigs” Were Almost Right

Engineered for Hurricanes: The “Three Little Pigs” Were Almost Right

Meteorology Matters examines the impact of hurricanes and extreme weather on residential buildings. Many Europeans believe their older buildings are stronger than American’s when in reality they’re not engineered to handle extremes, while survivorship bias may play a role in their perception. While many think the “Three Little Pigs” are the end all and be all of tough building examples, engineering plays a vital role in how those materials actually perform. Wood can actually perform better than concrete if it’s engineered better than brick for example. We analyze different building materials and construction techniques, exploring their resistance to high winds, storm surge, and flooding. Then dive into the importance of strong connections between building components, such as roofs and walls, and explore vulnerabilities in different types of construction, such as wood-framed homes. Highlighting the importance of understanding regional wind vulnerabilities and using building codes and design practices that meet local needs, research emphasizes the need to address the growing problem of residential building failures due to extreme weather events, particularly in areas prone to hurricanes and tornadoes.

21 Okt 202414min

NO, Hurricane Milton and Hurricane Helene were NOT Products of Weather Control but were Influenced by Climate Change

NO, Hurricane Milton and Hurricane Helene were NOT Products of Weather Control but were Influenced by Climate Change

We debunk the claim that Hurricanes Helene and Milton were artificially engineered or manipulated by the government, HAARP, or other individuals or groups. Experts in meteorology, geoengineering, and atmospheric research confirm that the technology needed to control or create hurricanes does not exist. They attribute the intensity of these storms to natural processes, emphasizing the role of climate change in intensifying hurricanes. We further expose the spread of misinformation online, particularly among right-wing influencers and accounts, highlighting the potential dangers of these unfounded theories. They underscore the importance of critical thinking and reliance on credible scientific sources in the face of such misinformation. While climate change may be influencing hurricanes in some ways, most notably by rapid intensification, these conspiracy theories lack real evidence and have no basis in science.

19 Okt 20249min

Tampa Soap Opera: Hurricane Evacuation Defier “Lieutenant Dan” Arrested After Surviving Helene and Milton on Boat

Tampa Soap Opera: Hurricane Evacuation Defier “Lieutenant Dan” Arrested After Surviving Helene and Milton on Boat

Joseph Malinowski, is the Florida man who went viral for his decision to ride out Hurricanes Helene and Milton on his small sailboat. He was dubbed "Lieutenant Dan" after the character in Forrest Gump because he was missing a leg among other similarities with the movie character and garnered considerable attention online. While he initially received support and even donations, Malinowski was eventually arrested for trespassing and failing to appear in court. We detail his legal troubles, as well as the concerns of his daughter who fears the attention will negatively impact her father.

19 Okt 20249min

Florida Homeowners Sell Due to Hurricanes, Flooding and Out of Control Costs

Florida Homeowners Sell Due to Hurricanes, Flooding and Out of Control Costs

Florida is facing a number of issues related to the insurance market and hurricanes. Insurance premiums are at an all-time high, with many homeowners facing an increase of up to 400%. The recent hurricanes, Helene and Milton, have caused billions of dollars in damage, further straining the insurance market. Some insurers are raising rates, while others are pulling out of the state entirely, leading to a shortage of insurance options. This is leading some homeowners to sell their properties at a loss, while others are hesitant to buy homes in Florida due to the risk of hurricanes. Despite the challenges, some residents are choosing to stay in Florida, citing the benefits of the state's weather, attractions, and overall lifestyle as outweighing the risks of hurricanes. There is also a growing interest in building hurricane-resistant homes, particularly domed structures, which have been proven to withstand even category 5 hurricanes. However, the high cost of building these homes presents a significant barrier for many.

18 Okt 202411min

Florida Always Near Top in Hurricane Building Codes

Florida Always Near Top in Hurricane Building Codes

The Insurance Institute for Business & Home Safety (IBHS) has published a report titled “Rating the States” that evaluates the building code enforcement and administration systems, as well as contractor licensing practices in the 18 Atlantic and Gulf coast states most vulnerable to hurricanes. Each state is assigned a score from 0 to 100 based on the state’s adoption, implementation, and enforcement of building codes designed to minimize windstorm damage. The report highlights states with the most effective building code systems, identifies areas for improvement, and emphasizes the importance of adopting modern building codes to reduce the devastating impacts of hurricanes. The IBHS report provides valuable insights into the effectiveness of state-level building codes and serves as a resource for policymakers to make informed decisions regarding building code regulations.

17 Okt 20247min

Miami King Tides: Flooding this Weekend and Beyond

Miami King Tides: Flooding this Weekend and Beyond

We explore the phenomenon of king tides and their increasing impact on coastal cities, particularly Miami. King tides are naturally occurring high tides that occur during specific lunar phases, amplified by the sun's gravitational pull. We discuss how these tides, exacerbated by rising sea levels due to climate change, are causing frequent sunny-day flooding in Miami and other coastal areas. We highlight the growing threat of these floods to infrastructure, businesses, and the overall well-being of coastal communities. The need can’t be emphasize enough for proactive planning and investment in mitigation strategies to address the escalating problem of king tides.

16 Okt 20247min

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