Watch: Giant waves crash into Taiwan as Typhoon Champi leaves over 500 injured; 1 dead

A typhoon is a powerful tropical cyclone, a rotating storm system that forms over warm ocean water and brings intense winds and heavy rain. The names hurricane, typhoon, and cyclone describe the same broad weather phenomenon, but different regions use different terms. The Northwest Pacific uses "typhoon," while other ocean regions use the alternatives.

Champi was described as a typhoon because it was in the Pacific region. It had earlier reached maximum sustained winds of 298 kmph and was previously classified as a super typhoon. Near Taiwan, the Central Weather Administration measured gusts of about 126 kmph around its centre. That regional naming difference does not mean the storms have different basic structures.

The terminology helps identify where a storm is occurring, while forecasts focus on its strength, movement, wind radius, and effects. Champi weakened near Taiwan but still caused one death, 527 injuries, power outages, cancelled flights, and widespread disruption. These impacts matter more than the label alone.

Champi was among the strongest Pacific storms of the year. The Associated Press reported that it earlier reached maximum sustained winds of 298 kmph, and it had been classified as a super typhoon. By Saturday, it had weakened, with gusts near its centre around 126 kmph, according to Taiwan's Central Weather Administration.

Its effects remained serious. Taiwan's fire department reported one death after a man was swept away by waves on Liuqiu Island. Another 527 people were injured. Authorities evacuated more than 2,600 people from vulnerable mountainous areas before the storm arrived. Taipower reported that more than 167,000 homes lost electricity at one point, though most had power restored.

These figures show why storm strength is not the only measure of danger. Champi's broad wind field, torrential rain, waves, and proximity to Taiwan produced major disruption even without a direct landfall. Flights, schools, offices, markets, and electricity services were all affected.

An offshore typhoon can still be dangerous because its winds extend far beyond the storm's centre. Those winds push ocean water toward the coast, creating large waves and dangerous surf. The storm's rainbands can also reach land, bringing torrential rain, squalls, flooding, and poor travel conditions. A nearby centre can therefore produce severe impacts without a direct landfall.

Champi passed close to Taiwan's northeastern coast while its centre remained offshore. Visuals showed gargantuan waves crashing ashore. On Liuqiu Island, a man was swept away by waves and died. Strong winds brought down trees, while heavy rainfall and squally showers affected parts of the island. The storm also disrupted flights and electricity supplies.

Champi's large wind radius increased the area exposed to dangerous conditions. More than 167,000 homes lost electricity at one point, and 527 people were injured. The storm weakened and moved north, but its offshore position did not prevent serious coastal and inland consequences.

Authorities closed schools, offices, markets, and transport services to reduce public exposure before dangerous weather arrived. Closures keep people off roads, away from unstable buildings and trees, and out of coastal or mountainous danger zones. They also give emergency workers more room to respond. Taiwan is generally well prepared for typhoons, and the article links that preparation with low casualties.

Before Champi's arrival, Taiwan largely shut down on Friday. Schools, offices, and financial markets closed, while hundreds of flights were grounded. Authorities evacuated more than 2,600 people from vulnerable mountainous areas. In northern and central areas, including Taipei, closures continued for a second day as winds and rain persisted.

The precautions did not prevent every consequence. One person died, 527 were injured, and more than 167,000 homes lost electricity at one point. Still, reducing movement and relocating people from exposed areas can limit risks while emergency services manage fallen trees, outages, flooding, and transport disruption.

A typhoon's wind radius is the distance from its centre across which strong winds can be felt. A large radius means the storm affects a wider area, not just places near the eye or centre. It can also lengthen the period of disruption because outer winds may arrive before the centre and remain after it passes.

Champi's Central Weather Administration warned that its wind radius was among the bigger ones in recent years. Forecaster Liu Pei-teng said strong winds could affect Taiwan for longer if the storm slowed down. The storm passed close to the northeastern coast, but its wide circulation still brought powerful gusts, fallen trees, waves, rain, and outages.

This explains why officials extended school and office closures in parts of northern and central Taiwan. A storm can remain offshore while its outer winds reach populated areas. Forecasts therefore consider the wind field as well as the centre's track, because a broad system can create widespread hazards even without landfall.

A typhoon can weaken when it loses access to the warm, moist ocean energy that supports its circulation. Cooler water, drier air, strong winds that disrupt its structure, or contact with land can also reduce its strength. It can strengthen when ocean conditions provide more heat and moisture and the storm's circulation remains organized. These are general meteorological explanations, not specific causes established in this article.

For Champi, the article records a clear change in intensity. It earlier reached maximum sustained winds of 298 kmph and was classified as a super typhoon. As it approached Taiwan, it weakened, with gusts near its centre around 126 kmph on Saturday. The article does not say exactly why the weakening occurred.

Even a weaker storm can remain dangerous if its wind radius is large and it passes near land. Champi still produced heavy rain, huge waves, injuries, power outages, fallen trees, and flight cancellations. Strength forecasts must therefore track both maximum winds and the storm's wider effects.

Typhoons are tracked by observing their centre, winds, pressure, clouds, rainfall, and movement over time. Forecasters then use weather models and new observations to project the storm's path, strength, and timing. The article identifies Taiwan's Central Weather Administration as a forecasting authority and reports that Reuters and the Associated Press also provided storm information.

Champi's forecast track showed it passing near Taiwan's northeastern coast, turning north toward the Chinese coast, and eventually moving toward southern Japan. Yet forecaster Liu Pei-teng said a direct landfall could not be ruled out if the storm changed direction or slowed near Taiwan. Those changes would alter when and where the strongest winds arrived.

Forecasts are updated as new data becomes available, but uncertainty remains. Champi ultimately stayed offshore and weakened, while its centre was about 150 kilometres east of Taiwan on Saturday. Its continuing movement toward the Chinese coast and southern Japan still required monitoring because timing and impacts could shift.