Severe Storm Alert: Sri Lanka Faces Back-to-Back Extratropical Cyclones with 100 km/h Winds in One Week

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November 4, 2025

Florianópolis, Brazil – Residents of Santa Catarina are preparing for a turbulent week as two powerful extratropical cyclones are predicted to impact the state on Wednesday, November 5th, and Friday, November 7th. Forecasters anticipate wind gusts reaching up to 100 km/h (62 mph), coupled with the threat of lightning and localized hail.

Initial Cyclone arrives Wednesday

Weather experts from Epagri/Ciram indicate that the first cyclone,associated with an advancing cold front,will develop over the ocean this Wednesday. While the initial impact is expected to be moderate, conditions will create possibilities for isolated thunderstorms and intense rainfall, particularly in the hilly regions encompassing Southern Plateau, Southern Coast, and Greater Florianópolis. these storms could develop during the late morning hours and persist through the afternoon.

Second, More Intense Cyclone Threatens Friday

A more substantial threat looms on Friday, as a second extratropical cyclone is predicted to form over the continent – a relatively uncommon occurrence. The forecast suggests that this system will bring winds of up to 80 km/h (50 mph) along the coastline, and potentially escalating to 100 km/h (62 mph) in mountainous areas. Meteorologist marcelo Martins explained that cyclones forming inland tend to generate stronger winds, heavier rainfall, and an increased risk of lightning and hail.

The impending system is projected to affect a broad area, including Uruguay, Rio Grande do Sul, santa Catarina, Paraná, Eastern Argentina, and Southern paraguay.

Civil Defense Issues Warnings and Safety Recommendations

Civil Defense authorities have issued alerts and are urging residents to take necessary precautions. They advise seeking shelter during storms, avoiding windows and unsecured objects. When strong winds are present, travel should be avoided, and individuals should stay clear of trees, signs, walls, and power lines. In the event of heavy rainfall and flooding, never attempt to cross flooded streets or submerged bridges.

Day	Expected Conditions	Wind speed (km/h)
Wednesday	Isolated Thunderstorms, Intense Rain (Hilly Areas)	Up to 60
Friday	Strong winds, Heavy Rain, Lightning, Hail	Up to 100 (Mountains)
saturday	Unstable Weather, Cloudy, Rain	Up to 80

Although Saturday will see the cold front move away from the state, unstable weather patterns will persist, with continued cloud cover and the potential for rainfall throughout the day, and gusts exceeding 80km/h.

Did You Know? Extratropical cyclones are common in southern Brazil during the cooler months, often bringing significant precipitation and strong winds.

Staying Safe During the Storms

• Secure loose outdoor objects.
• Charge electronic devices.
• Monitor weather updates from reliable sources.
• Have a family emergency plan in place.

Are you prepared for severe weather events? What steps do you take to safeguard your home and family?

Understanding Extratropical Cyclones

Extratropical cyclones are large-scale weather systems that form outside the tropics. Unlike tropical cyclones (hurricanes), wich draw energy from warm ocean waters, extratropical cyclones are driven by temperature differences between air masses. They typically develop along fronts, were warm and cold air collide, and are characterized by strong winds, heavy precipitation, and significant temperature fluctuations. The South American continent is frequently affected by these systems during the fall and winter months, impacting regions like Southern Brazil with varying degrees of intensity.

Frequently Asked Questions About Santa Catarina Cyclones

• what is an extratropical cyclone? An extratropical cyclone is a large-scale weather system that forms outside of the tropics, driven by temperature differences.
• How fast could the winds reach during the cyclone? Winds are forecast to reach up to 100 km/h (62 mph) in mountainous areas.
• What areas of Santa Catarina are most at risk? Hilly regions, the Southern Coast, and Greater Florianópolis are expected to experience the heaviest rainfall and most significant impacts.
• What should I do to prepare for the cyclone? Secure outdoor objects, charge electronic devices, and monitor weather updates.
• Where can I find reliable weather facts? Check with Epagri/Ciram and local Civil Defense authorities for the latest forecasts and alerts.

Stay tuned to archyde for further updates on these developing storms. Share this article with your friends and neighbors to help everyone stay informed and prepared.

What actions does the Department of Meteorology and the Disaster Management center (DMC) recommend to secure your home before a storm?

Understanding the Current Weather Situation in Sri Lanka

Sri Lanka is currently bracing for impact after experiencing, and now facing another, powerful extratropical cyclone within a single week. These storms,characterized by sustained winds reaching 100 km/h (approximately 62 mph),pose a significant threat to life and property across the island nation. This unprecedented sequence of severe weather events demands immediate attention and preparedness from residents and authorities alike. the term “SRI” – while having other meanings like Socially Responsible investment – is currently overshadowed by the urgent need to address this severe weather crisis impacting Sri Lanka.

Cyclone Formation and Characteristics

Extratropical cyclones, unlike their tropical counterparts, derive their energy from temperature contrasts rather than warm ocean waters. They typically form in higher latitudes but can extend into tropical regions, bringing strong winds, heavy rainfall, and rough seas.

* Wind Speeds: Sustained winds of 100 km/h are capable of causing widespread damage, including downed trees, power outages, and structural damage to buildings. Gusts can be even higher,exacerbating these effects.

* Rainfall: Accompanying the strong winds will be torrential rainfall, increasing the risk of flash floods and landslides, particularly in mountainous regions.

* Sea Conditions: Rough seas and high waves will make coastal areas extremely hazardous, impacting fishing communities and maritime activities.

* storm Surge: While extratropical cyclones generally don’t produce the same level of storm surge as tropical cyclones, elevated sea levels are still possible and can contribute to coastal flooding.

Affected Regions and Potential Impacts

The most vulnerable regions in Sri Lanka include:

* Coastal Areas: All coastal districts are at risk from strong winds, high waves, and potential coastal flooding.

* Hill Country: The central highlands are susceptible to landslides and flash floods due to the heavy rainfall.

* Northern and Eastern Provinces: These areas often bear the brunt of cyclone activity due to their geographical location.

* Major Cities: Colombo, Galle, and other major urban centers could experience disruptions to infrastructure, transportation, and essential services.

Potential impacts include:

* Infrastructure Damage: Power lines, roads, bridges, and buildings are all at risk of damage.

* Disrupted Transportation: Air and sea travel will likely be suspended,and road travel will be hazardous.

* Agricultural Losses: Crops and livestock could be severely affected, impacting food security.

* Displacement of Populations: Evacuations might potentially be necessary in vulnerable areas, leading to the displacement of communities.

* Economic Impact: The combined effects of the storms could have a significant impact on Sri LankaS economy.

Safety Measures and Preparedness – What You Need to Do

Prioritizing safety is paramount. Here’s a breakdown of essential steps to take:

1. Heed Official Warnings: Stay informed about the latest weather updates and warnings from the Department of Meteorology and the Disaster Management Centre (DMC).
2. Secure Your Home:

* Reinforce doors and windows.

* Bring loose objects indoors (furniture, gardening tools, etc.).

* Trim trees and branches that could fall.

3. Prepare an Emergency Kit: Include:

* Non-perishable food and water (enough for several days).

* First-aid kit.

* Flashlight and extra batteries.

* Radio (battery-powered or hand-crank).

* Crucial documents (copies of identification, insurance policies).

4. Evacuate if ordered: If authorities issue an evacuation order, comply immediately. No your designated evacuation shelter.
5. Stay Indoors: During the storm, remain indoors and away from windows.
6. Avoid travel: Do not attempt to travel during the storm.
7. Power Outages: Be prepared for power outages. Unplug electronic devices to protect them from surges.
8. Interaction: Keep mobile phones charged and have a plan for communicating with