Storm chaser recounts turbulent experience in the eye of Hurricane Melissa | DW News

Key Concepts

• Hurricane Melissa: A powerful Category 5 hurricane threatening Jamaica.
• Category 5 Hurricane: The highest classification for hurricanes, indicating sustained winds of 260 km/h or higher.
• Multiple Hazards: Hurricanes present various threats beyond wind, including heavy rainfall, flooding, landslides, and storm surge.
• Storm Surge: An abnormal rise of water generated by a storm, over and above the predicted astronomical tide.
• Hurricane Hunters: Aircraft and crews that fly into hurricanes to gather data.
• Eye of the Storm: The calm, clear center of a hurricane.
• Eyewall: The ring of intense thunderstorms surrounding the eye, characterized by extreme winds.
• Landfall: The point where a storm crosses a coastline.

Hurricane Melissa Threatens Jamaica

Jamaica is preparing for the potential arrival of Hurricane Melissa, which forecasters predict could be the most powerful storm in the island's recorded history. The hurricane has been upgraded to a Category 5, the highest classification, with sustained winds of 260 km/h. Landfall is anticipated early Tuesday. Mandatory evacuations are in effect for several areas, with residents urged to seek shelter. Forecasters warn of catastrophic flooding, landslides, and widespread damage.

Expected Hazards and Impacts

Meteorologist Matthew Kapuchi detailed the severe threats associated with a Category 5 hurricane:

• Extreme Winds: Gusts exceeding 250 km/h are expected, described as "tornado-like swats of extreme winds."
• Catastrophic Flooding: Up to a meter or more of rainfall in higher elevations could lead to severe flooding.
• Storm Surge: A significant storm surge of 3 to 5 meters is predicted, causing "tsunami-like flooding" at the coastline, particularly near Kingston.
• Landslides: Heavy rainfall increases the risk of landslides.

These combined hazards create a high-risk scenario requiring immediate protective actions.

Experience in the Eye of the Storm

Matthew Kapuchi shared his experience flying into the eye of Hurricane Melissa with NOAA's Hurricane Hunters:

• Aircraft Mission: The mission involved flying an aircraft directly into the storm's core (then a high-end Category 4, now Category 5) to collect measurements for the National Hurricane Center.
• Turbulence: The experience within the hurricane's main body was characterized by extreme turbulence, likened to being in a "washing machine," with visibility obscured.
• The Eye: Upon entering the eye, a stark contrast was observed: an "oasis of calm" approximately 15 km wide. This area features sinking, dry air, creating a hole in the storm's center.
• Eyewall Observation: From the eye, towering thunderstorms of up to 15-20 km in height were visible, forming the "eyewall," described as a "buzzsaw of extreme winds."
• Temperature Difference: A noticeable temperature increase was felt within the eye, with temperatures potentially 9-10 degrees Celsius warmer than outside the storm, as hurricanes are warm-core systems.
• Psychological Impact: The juxtaposition of absolute calm within the eye against the destructive power of the surrounding eyewall was described as "bizarre."

Timeline and Preparations

• Current Conditions: Jamaica is already experiencing outer rainbands and squally weather, with tropical storm-force conditions ongoing. Hurricane conditions are expected to begin soon.
• Landfall Timing: High-end winds of over 200 km/h are anticipated once the storm's tightly coiled core makes landfall, likely in the western half of the island, expected by Tuesday morning.
• Evacuation and Sheltering: Authorities have issued mandatory evacuation orders. Residents are advised to move inland away from the coast to avoid storm surge, avoid landslide-prone areas, and shelter in interior rooms away from windows, above flood lines.

Conclusion

Hurricane Melissa poses an unprecedented threat to Jamaica, bringing a combination of extreme winds, heavy rainfall, significant storm surge, and the risk of landslides. The Category 5 classification signifies a dire situation requiring immediate and decisive action from both authorities and residents to mitigate loss of life and property damage. The experience of flying into the storm highlights the immense power and contrasting nature of its core and eyewall.