Still-raging Hurricane Melissa makes landfall in eastern Cuba | DW News

Key Concepts

• Hurricane Melissa: A powerful hurricane that impacted Jamaica and Cuba.
• Category 3 Storm: A classification of hurricane strength based on wind speed, indicating significant damage potential.
• Category 5 Storm: The highest classification of hurricane strength, indicating catastrophic damage potential.
• Saffir-Simpson Hurricane Scale: A wind-scale used to categorize the intensity of hurricanes.
• Rapid Intensification: A phenomenon where a hurricane's wind speed increases significantly in a short period.
• Sea Surface Temperatures (SSTs): The temperature of the ocean's surface, a key factor in hurricane development and intensification.
• Climate Change: Long-term shifts in temperatures and weather patterns, influencing hurricane behavior.
• Potential Intensity: A theoretical maximum intensity a hurricane can reach under ideal atmospheric conditions.
• Storm Surge: A rise in sea level caused by a hurricane, pushing water against the coastline.
• Landslides: The movement of rock, earth, or debris down a sloped section of land, often triggered by heavy rainfall.

Hurricane Melissa's Impact on the Caribbean

Hurricane Melissa has caused significant damage in the Caribbean, with eastern Cuba being directly impacted. Cuban authorities have evacuated over 700,000 people, anticipating catastrophic damage in Santiago de Cuba, the nation's second-largest city.

Jamaica: A Disaster Area

Prior to reaching Cuba, Hurricane Melissa made landfall in Jamaica as a powerful Category 3 storm, after being downgraded from its peak intensity. Jamaican authorities declared the entire island a disaster area, warning of ongoing risks from flooding and landslides.

• Record-Breaking Intensity: When Hurricane Melissa struck Jamaica, it was the most powerful storm to ever make landfall in recorded history, with winds reaching nearly 300 km per hour.
• Devastating Infrastructure Damage: The hurricane has severely compromised Jamaica's infrastructure. St. Elizabeth, a crucial agricultural region known as the "breadbasket of the country," has been particularly hard-hit.
• Widespread Impact: The entire island of Jamaica has felt the brunt of Melissa's force. At its peak, the storm caused buildings to be smashed, trees to be uprooted, and significant flooding in the capital city, Kingston.
• Gratitude for Missed Direct Hit: While Kingston experienced severe flooding, the eye of the storm did not directly hit the city, leading to a sense of gratitude among residents who felt fortunate to have been spared the worst.

Meteorological Analysis of Hurricane Melissa

Dr. Helen Hooker, a meteorologist and hydrologist specializing in climate change impacts, provided insights into the unusual characteristics of Hurricane Melissa.

• Rapid Intensification: A key unusual aspect of Melissa was its rapid intensification over the Atlantic and Caribbean seas as it approached Jamaica.
• Slow Movement and Deepening: The hurricane's extremely slow movement allowed it to deepen very quickly and sustain Category 5 status for an extended period, which is uncommon for a storm late in the hurricane season.
• Role of Warming Sea Surface Temperatures: The exceptional heat in the Caribbean Sea, which is 1.5 to 2 degrees Celsius above average for this time of year, provided the "fuel" for Melissa's intensification. This warming is attributed to climate change.
• Lengthening Hurricane Season: Recent years have seen a lengthening of the hurricane season, with storms like Hurricane Barry earlier in the season and Hurricane Melissa later, reaching high categories. Melissa achieved the highest landfall intensity ever recorded in the Atlantic Ocean.
• Climate Change and Rainfall: Climate change is also impacting the amount of rainfall from hurricanes. Warmer oceans provide more moisture, which is drawn into the storm. Melissa's slow movement meant it held an exceptional amount of moisture, leading to more intense rainfall and subsequent flooding and landslides upon landfall.
• Erratic Path: The path of a hurricane is influenced by high and low-pressure systems across a wider area, which steer its track. Melissa followed a generally westward track across the Atlantic, then turned northwards, and is expected to eventually move back across the Atlantic as it decays. The speed of travel can vary, as seen with Melissa's slow approach to Jamaica.

Lessons Learned and Future Preparedness

• Forecasting and Preparation: Hurricane Melissa was well-forecasted, and islands like Jamaica appeared well-prepared due to improvements in track forecasting, which helps minimize impacts.
• Limitations of Preparedness: Despite good preparation, the sheer strength of a hurricane like Melissa means there are limits to what can be done to protect infrastructure.
• Saving Lives: Moving people out of harm's way is crucial for saving lives.
• Infrastructure Improvements: Going forward, improvements to infrastructure and coastal protection will be necessary.

Downgrading and Continued Threat

Meteorologist Matthew Kapuchi explained that while the downgrading of Hurricane Melissa to a Category 3 storm is good news from a wind standpoint, it does not diminish the threat of heavy rainfall and storm surge.

• Saffir-Simpson Scale Limitations: The Saffir-Simpson scale only accounts for wind speed and not rainfall or storm surge.
• Re-intensification: Melissa began re-intensifying over the warm Caribbean waters north of Jamaica, indicating it still possesses significant power.
• Sensory Experience of a Hurricane: Kapuchi described the deafening noise of a hurricane as being like standing next to a waterfall for extended periods, with air and fluid rushing past. He emphasized the importance of taking precautions for those in the storm's path.

Unprecedented Intensity and New Patterns

• Potential Intensity and Melissa: Matthew Kapuchi highlighted the concept of "potential intensity," a theoretical maximum a hurricane can reach. Hurricane Melissa came incredibly close to this ceiling, a rare occurrence.
• Ideal Conditions: Melissa benefited from extremely warm water temperatures, favorable upper-atmosphere winds, and robust moisture, checking all the boxes for extreme intensification.
• Unprecedented Landfall Intensity: The fact that a storm of this magnitude continued to intensify and make landfall on a densely populated area like Jamaica is considered unprecedented in the modern era of the Western Hemisphere.
• Comparison to Past Hurricanes: While Category 5 hurricanes have struck the Caribbean before (e.g., Hurricane Dorian in the Bahamas in 2019), the combination of rapid intensification and landfall on a populous landmass is a notable concern.
• Climate Change and Storm Intensity: Climate change is contributing to a pattern of more rapid intensification and a higher ceiling for storm strength, particularly as ocean temperatures rise.
• Global Trends: Globally, the number of tropical cyclones may remain stable or slightly decrease, but the storms that do form are becoming more intense and strengthening faster.

Conclusion

Hurricane Melissa has served as a stark reminder of the increasing intensity and potential impact of tropical storms, largely attributed to climate change and warming ocean temperatures. While forecasting and preparedness have improved, the scale of damage underscores the need for enhanced infrastructure and ongoing adaptation strategies to mitigate the effects of these powerful weather events. The storm's rapid intensification and near-record landfall intensity highlight a concerning new pattern in hurricane behavior.