Hurricane Polo downgraded to Category 4 but remains very powerful off Mexico

Hurricane Polo has been downgraded from Category 5 to Category 4, but forecasters say it remains a very powerful storm off Mexico's Pacific coast. The system is still expected to bring intense wind and heavy rain to parts of south-western Mexico, even though direct landfall is not expected. Mexico's president said the latest information suggested the hurricane would not strike the coast directly, while urging people in exposed areas to stay alert.

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The US National Hurricane Center said Polo was still capable of producing life-threatening flooding and mudslides, especially in steep terrain. It forecast rainfall totals of up to 6in, or 15cm, with as much as 8in possible in some places. Residents were also warned about large ocean swells and dangerous surf conditions over the next few days, as the storm slowly drifts northwest over very warm waters.

The latest assessment followed a Hurricane Hunter flight on Tuesday by the US National Oceanic and Atmospheric Administration, which recorded sustained winds near 180 mph, or 285 km/h, with stronger gusts. The storm had previously been classified as Category 5, the highest level on the Saffir-Simpson scale, before being downgraded on Wednesday morning. Forecasters said the environment remained very conducive for the hurricane to retain strength, because of extremely warm ocean waters feeding the system.

The storm matters because even without a direct hit, its rain bands and coastal impacts could still affect a wide area. Mexico's president named Jalisco, Colima and Michoacan as states that should remain vigilant. The warning is especially significant for communities in steep or mountainous terrain, where heavy rain can quickly trigger landslides and flooding.

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Polo is also part of a broader pattern of rapid intensification in the eastern Pacific, where warm waters can allow storms to strengthen quickly. Scientists monitoring the region say the current El Nino climate phenomenon is now the strongest on record, with sea surface temperatures in a key part of the central-eastern Pacific running well above average. Warmer seas can give tropical systems more energy, helping them sustain stronger winds and heavier rainfall.

What remains unclear is how close Polo will come to the coast and how much rain and surf will reach inland areas. Forecasters are expected to keep tracking its intensity, path and rainfall potential as it continues northwest. The main risks to watch are flooding, mudslides and dangerous coastal conditions in the states already identified by Mexican authorities.

Hurricane Polo has strengthened into a rare Category 5 storm off Mexico's Pacific coast, with officials warning of dangerous conditions even though a direct landfall is not expected. The storm was assessed on Tuesday after a Hurricane Hunter aircraft flew into it and recorded sustained winds near 180 mph, or 285 km/h. It is moving slowly northwest over very warm waters and is forecast to skirt the south-western coast rather than strike land directly.

The US National Oceanic and Atmospheric Administration's Miami-based National Hurricane Center described Polo as "extremely dangerous" and said its intensification over 24 hours was "truly remarkable". Mexico's President Claudia Sheinbaum said the latest information suggested the storm would not make direct landfall, but urged people along the Pacific coast to remain vigilant. She specifically named Jalisco, Colima and Michoacan as states at risk.

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Even without a direct hit, the storm is expected to bring torrential rain, flooding, mudslides and dangerous surf to parts of the south-west coast. NOAA said rainfall totals of up to 6in, or 15cm, were forecast, with as much as 8in possible in some areas. Residents have also been warned about large ocean swells and life-threatening surf conditions over the next few days.

The storm's rapid strengthening matters because it reduces the time available for preparation and can widen the area affected by hazardous weather. Polo is feeding on extremely warm waters linked to the El Nino climate phenomenon, which scientists say is now the strongest on record. Warmer seas can give tropical systems more energy, helping them intensify quickly and sustain stronger winds for longer.

Polo is the season's third Category 5 storm in the Pacific, the highest level on the Saffir-Simpson scale. That makes it part of a broader pattern of unusually intense storms in the basin, even as the Atlantic has been comparatively quiet late in the hurricane season. The current conditions have also raised concern because the storm is expected to remain over very warm water, which could allow it to stay at Category 5 strength for several days.

What remains unclear is how close Polo will come to the coast and how far its rain bands and surf will extend inland. Forecasters will continue to track its intensity, rainfall potential and path as it drifts northwest. The main risks to watch are flooding, mudslides and dangerous coastal conditions in the states already identified by Mexican authorities.

Hurricane Polo has rapidly strengthened into a Category 5 storm off Mexico's south-west coast, with forecasters warning of dangerous conditions even though a direct hit on land is considered unlikely. The hurricane was located about 215 miles south of Zihuatanejo in Guerrero state on Tuesday, according to the latest confirmed report. It had intensified from a tropical storm in less than 24 hours, making it one of the most abrupt strengthening episodes reported in the region this season.

The storm was carrying maximum sustained winds of 165 mph, or 266 km/h, when it was last assessed. On Monday, Polo had still been classified as a tropical storm with winds below 74 mph, showing how quickly conditions changed over the Pacific. Forecasters at the National Hurricane Center in Miami said further intensification remained possible, while also saying Mexico was likely to avoid a direct strike.

Even without a direct landfall, the storm is expected to bring serious hazards inland. Forecasters warned of life-threatening flooding and mudslides, along with dangerous surf and rip current conditions along exposed coastal areas. The immediate concern is for communities in and around Guerrero state, where steep terrain can increase the risk of landslides when heavy rain falls.

Polo's rapid strengthening comes amid unusually strong El Niño conditions in the Pacific Ocean. Meteorologists say El Niño can suppress storm development in the Atlantic while encouraging more activity in the Pacific, and the current episode has been described as exceptionally strong. That broader pattern helps explain why the Pacific basin has remained active while the Atlantic has been comparatively quiet late in the hurricane season.

The storm also highlights the wider challenge posed by rapid intensification, when tropical systems strengthen sharply over a short period. Such changes can reduce the time available for warnings and preparations, especially for coastal and inland communities that may still face flooding even if the centre stays offshore. The combination of high winds, rough seas and heavy rain can create disruption far beyond the storm's immediate track.

What remains unclear is how much more Polo may strengthen and how far its rain bands and surf will extend toward the Mexican coast. Forecasters will continue to monitor the hurricane's track, intensity and rainfall potential as it moves through the eastern Pacific. The main risks to watch are flooding, mudslides and dangerous coastal conditions, particularly in Guerrero state and nearby areas.

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