Hurricane Humberto hits category 5 with 260 km/h winds, alerts issued for new storm in Florida Por Carolina Costa
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Hurricane Humberto reached category 5 on the Saffir-Simpson scale on Saturday, September 27, 2025, in the Atlantic Ocean, with sustained winds of up to 260 km/h. This event occurred northwest of Bermuda and marks the second maximum-intensity cyclone of the 2025 hurricane season, following Hurricane Erin. The National Hurricane Center issued alerts for potential indirect impacts along the US east coast.
A tropical depression, designated as Nine, formed on the same date between Cuba and the Bahamas, with 56 km/h winds, raising additional concerns for the region. The system is expected to develop into Tropical Storm Imelda by Sunday and possibly a category 1 hurricane by Monday, September 29. Residents of Florida and the Bahamas were advised to monitor updates and prepare essential supplies.
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Humberto’s intensification occurred in under 48 hours, escalating from 105 km/h winds on Thursday to extreme levels. This rapid process highlights the influence of warm ocean waters, which provide energy for tropical system development.
Rapid intensification surprises experts
Experts note that Hurricane Humberto recorded a 65 km/h wind increase in just 24 hours, characterizing an explosive intensification. This phenomenon was previously seen in events like Hurricane Otis in 2023, which devastated Acapulco, Mexico.
The National Hurricane Center records only four prior years with two or more category 5 hurricanes by late September: 1933, 2005, 2007, and 2017. The current trajectory keeps the system away from land, but associated waves may affect east coast beaches.
Humberto’s projected path
Humberto is moving northwest, expected to maintain category 5 strength until Sunday, September 28. By Monday, the hurricane should weaken to category 4 or 3 south of Bermuda, according to weather models.
High waves and rip currents pose risks for beachgoers along the US coast, even without direct impact. Rescue teams are preparing preventive operations in vulnerable areas.
Continuous monitoring aims to detect route variations influenced by atmospheric patterns. Authorities recommend avoiding beaches during the weekend.
Formation and evolution of depression Nine
Tropical depression Nine emerged Saturday morning between Cuba and the Bahamas, with organized circulation and initial 56 km/h winds. The system is moving slowly northwest, aided by humid atmospheric conditions.
Forecasts indicate it will become Tropical Storm Imelda by Saturday night or Sunday morning. This evolution is expected over the islands, bringing up to 150 mm of rain in 24 hours.
Tropical storm warnings are in effect for the central and northern Bahamas, with winds above 63 km/h expected by Sunday night. Urban and riverine flooding are the primary risks identified.
The path should take the center toward the US southeast coast in the coming days, possibly weakening before landfall. Models diverge on final intensity, with some predicting category 1 near South Carolina.
Alerts issued for affected regions
Tropical storm warnings were activated for the Bahamas this weekend, covering islands like Grand Bahama and Abaco. Local authorities are distributing sandbags and guiding evacuations in low-lying areas.
In Florida, an alert covers the east coast from Palm Beach to Volusia, valid until Monday. Residents are preparing properties with window shutters and potable water reserves.
- Heavy rains may accumulate 100 to 200 mm in southeast Florida by Tuesday, September 30.
- Winds of 80 to 100 km/h will affect coastal areas, downing branches and causing power outages.
- Coastal flooding will occur on Georgia and Carolina beaches, raising sea levels by up to 1 meter.
- Emergency teams are positioning shelters in cities like Miami and Charleston.
These measures aim to minimize damage to urban infrastructure. The federal government is coordinating logistical support for impacted states.
Environmental factors behind the storms
Elevated ocean temperatures in the northern Atlantic, above 28°C, accelerate cyclone formation like Humberto. These patterns result from annual climate variations, peaking in September.
Studies show the Atlantic basin has recorded 44 category 5 hurricanes since tracking began. The 2025 season already exceeds the historical average in early intensity.
Atmospheric changes alter trajectories, complicating long-term forecasts. Satellites and reconnaissance aircraft provide real-time data for alert adjustments.
Depression Nine benefits from low wind shear, allowing structural consolidation. This condition persists into early next week, favoring strength gains.
Preparations underway on the east coast
Schools and businesses in Florida are suspending activities starting Sunday to avoid risks. Public transport is adjusting routes in potential flood zones.
Federal agencies are sending generators and medical supplies to the Bahamas. International cooperation strengthens radar monitoring on the islands.
- Coastal populations are stocking non-perishable food for at least 72 hours.
- Alert apps send real-time notifications to registered mobile phones.
- Volunteers organize beach cleanup efforts for marine debris.
These actions draw on lessons from past seasons, prioritizing rapid response.
