Overview
Typhoon Usagi, designated as Super Typhoon Ofel by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), was a powerful tropical cyclone that impacted the Philippines in mid-November 2024. This system was part of a significant meteorological sequence that saw six consecutive tropical cyclones strike the archipelago within a span of four weeks. Usagi was the fifth of these systems, following the impacts of Tropical Storm Trami, Typhoon Kong-rey, Typhoon Yinxing, and Typhoon Toraji, and preceding the stronger Typhoon Man-yi. The storm’s trajectory and intensity contributed to a rare atmospheric configuration in the Western Pacific.
Unprecedented November Activity
The occurrence of Typhoon Usagi coincided with a historic meteorological event. Usagi was one of four tropical cyclones that simultaneously existed in the Western Pacific during the month of November 2024. This simultaneous presence marked the first time such an event had been recorded since records began in 1951. The other three systems sharing the basin during this period were Yinxing, Toraji, and Man-yi. This clustering of storms highlighted the active nature of the 2024 Pacific typhoon season and the specific atmospheric conditions that allowed multiple systems to mature concurrently.
After impacting the Philippines, Typhoon Usagi continued its path to affect Taiwan later in mid-November 2024. The storm is now considered a historic event in the region's meteorological record, particularly noted for its role in the unprecedented four-storm configuration and its position within the rapid succession of cyclones that challenged emergency response systems across Luzon and other regions. The classification and tracking of this system were managed by PAGASA, which designated it as Ofel for local communication and preparedness efforts.
Meteorological history and track
Typhoon Usagi, designated as Super Typhoon Ofel by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), was a significant tropical cyclone that impacted the Philippines in mid-November 2024. It was the fifth of six consecutive tropical cyclones to affect the archipelago within a four-week span, following Tropical Storm Trami, Typhoons Kong-rey, Yinxing, and Toraji, and preceding Typhoon Man-yi. During its peak, Usagi was one of four simultaneous tropical cyclones in the Western Pacific, a rare occurrence not seen since records began in 1951; the other systems were Yinxing, Toraji, and Man-yi.
Formation and Intensification
Usagi developed into a powerful system, reaching Super Typhoon status before making landfall. The storm intensified significantly, achieving Category 4 strength. This rapid development contributed to its classification as one of the notable storms of the 2024 season. The system moved through the Western Pacific, interacting with other concurrent cyclones, which created a complex meteorological environment in the region.
Landfall and Track
The storm made landfall in Baggao, Cagayan, located in the Luzon region. This impact was part of the broader sequence of storms affecting the northern Philippines. After crossing the Philippine landmass, Usagi continued its track toward Taiwan, affecting the island nation in mid-November 2024. The system eventually dissipated after its passage through Taiwan and the surrounding waters.
| Date | Milestone |
|---|---|
| Mid-November 2024 | Impact on the Philippines |
| Mid-November 2024 | Landfall in Baggao, Cagayan |
| Mid-November 2024 | Impact on Taiwan |
Why it matters
Typhoon Usagi, designated as Super Typhoon Ofel by the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), holds significant meteorological importance due to its role in two distinct record-breaking phenomena in the Western Pacific basin. The system was the fifth of six consecutive tropical cyclones to impact the Philippines within a span of four weeks in late 2024. This intense sequence followed Tropical Storm Trami and Typhoons Kong-rey, Yinxing, and Toraji, and preceded the stronger Typhoon Man-yi. Such a rapid succession of storms placed considerable strain on regional infrastructure and emergency response mechanisms across Luzon and other affected provinces.
Simultaneous Cyclones in November
Beyond its position in the six-storm sequence, Usagi was part of a rare synoptic configuration. It was one of four tropical cyclones to exist simultaneously in the Western Pacific during the month of November 2024. The other three systems present at the same time were Yinxing, Toraji, and Man-yi. This event marked the first time since records began in 1951 that four distinct tropical cyclones coexisted in the basin during November. This statistical anomaly highlights the increasing complexity of late-season tropical activity in the region.
The simultaneous presence of these systems influenced the track and intensity of each storm, including Usagi’s path toward the Philippines and its subsequent movement toward Taiwan in mid-November 2024. For meteorologists and climatologists, this convergence provides critical data on how multiple low-pressure systems interact in the Western Pacific during the latter part of the calendar year. The event underscores the variability of tropical cyclone behavior and the potential for compounded impacts when multiple systems are active concurrently.
What were the impacts on the Philippines?
Typhoon Usagi, designated locally as Super Typhoon Ofel by PAGASA, struck Luzon in mid-November 2024, marking the fifth of six consecutive tropical cyclones to impact the Philippines within a four-week span. The storm followed Tropical Storm Trami and Typhoons Kong-rey, Yinxing, and Toraji, and preceded the stronger Typhoon Man-yi. Usagi was part of a rare meteorological event where four tropical cyclones simultaneously existed in the Western Pacific in November, the first occurrence since records began in 1951; the other systems were Yinxing, Toraji, and Man-yi.
Regional Impacts in Luzon
The storm significantly affected the Cagayan Valley region, with Cagayan Province and the municipality of Baggao experiencing direct impacts. As a historic weather event of 2024, Usagi contributed to the cumulative strain on infrastructure and communities in Luzon that had already been battered by preceding systems. The rapid succession of storms limited recovery time for affected areas, compounding the damage from earlier cyclones in the same month.
Disaster Statistics
While specific financial damage figures and precise displacement counts for Usagi alone are detailed in post-storm reports, the storm is recognized for its intensity and its role in the unprecedented November 2024 cyclone cluster. The impacts were concentrated in northern Luzon, particularly in Cagayan Province, where the storm's path through Baggao and surrounding areas led to significant local disruption.
| Metric | Value |
|---|---|
| Year | 2024 |
| Local Name | Super Typhoon Ofel |
| Primary Region Affected | Luzon (Cagayan Valley) |
| Notable Location | Baggao, Cagayan |
| Concurrent Cyclones | 4 (Usagi, Yinxing, Toraji, Man-yi) |
| Sequence in Month | 5th of 6 consecutive cyclones |
The event underscores the increasing volatility of the Philippine typhoon season, with PAGASA tracking the rapid development and movement of these systems. The simultaneous presence of four named storms in November 2024 remains a significant meteorological milestone for the Western Pacific basin.
How did climate change influence the 2024 typhoon season?
The 2024 typhoon season in the Philippines was marked by an unusual concentration of powerful storms, including Typhoon Usagi, which was locally designated as Super Typhoon Ofel (PAGASA, 2024). This cluster of six consecutive tropical cyclones impacting the archipelago within a four-week span has drawn significant scientific scrutiny regarding the role of climate change in intensifying tropical weather patterns. Researchers have pointed to specific meteorological data to explain this heightened activity.
Sea Surface Temperature Rise
A key factor identified in the analysis of the 2024 season is the rise in sea surface temperatures. Studies indicate that the waters of the Western Pacific experienced a temperature increase of 1.3 °C, a metric directly linked to the fuel available for tropical cyclone development (World Weather Attribution, 2024). Warmer ocean surfaces provide more latent heat energy, which is essential for sustaining and strengthening typhoons as they traverse the region. This thermal energy contributed to the rapid intensification observed in systems like Usagi and the other concurrent storms.
Increased Probability of Intense Hits
The combination of warmer seas and atmospheric conditions increased the statistical probability of Category 3–5 typhoon hits on the Philippine archipelago. The World Weather Attribution study highlighted that the likelihood of experiencing such intense storms was significantly higher due to these climatic shifts (World Weather Attribution, 2024). This means that the severity of impacts, including stronger winds and heavier rainfall associated with Super Typhoon Ofel, was not merely a matter of chance but was influenced by broader climatic trends. The simultaneous existence of four tropical cyclones in the Western Pacific in November 2024 further underscores the anomalous nature of the season, a phenomenon not seen since records began in 1951.
What happened in Taiwan and other regions?
After making landfall in the Philippines, Typhoon Usagi, locally known as Super Typhoon Ofel, continued its westward trajectory toward the island of Taiwan. The storm maintained significant intensity as it approached the main island, prompting the Central Weather Administration (CWA) of Taiwan to issue a series of tropical cyclone warnings. These warnings were critical for coordinating emergency responses and informing the public about the impending weather conditions in mid-November 2024.
Transport Disruptions in Taiwan
The approach of Super Typhoon Ofel caused widespread disruptions to transport networks across Taiwan. The Central Weather Administration's forecasts led to preemptive adjustments in both air and sea travel. Numerous flights were either delayed or cancelled as airports in northern and central Taiwan braced for strong winds and heavy rainfall. The Taiwan High Speed Rail (THSR) and the Taiwan Railways Administration (TRA) also implemented speed restrictions and temporary suspensions to ensure passenger safety.
Maritime transport was similarly affected, with several ferry routes between Taiwan and its outlying islands, such as Kinmen and Penghu, seeing reduced schedules or complete halts. The CWA monitored the storm's path closely, noting that the combination of the typhoon's size and its forward speed contributed to the prolonged duration of the weather impacts. These disruptions were part of the broader regional effect of Usagi, which had already impacted Luzon before moving on to affect Taiwan.
Regional Context and Historical Significance
Typhoon Usagi was part of a notable meteorological event in the Western Pacific. It was one of four tropical cyclones that existed simultaneously in the region during November 2024, a first since records began in 1951. The other three systems were Yinxing, Toraji, and Man-yi. This rare occurrence highlighted the active nature of the November 2024 tropical cyclone season in the Western Pacific. The simultaneous presence of these storms added complexity to tracking and forecasting efforts for meteorological agencies in the region, including the CWA in Taiwan.
The impact on Taiwan was significant but part of a larger pattern of consecutive cyclone impacts in the region. Usagi was the fifth of six consecutive tropical cyclones to impact the Philippines within a span of four weeks. This sequence included Tropical Storm Trami, Typhoons Kong-rey, Yinxing, and Toraji, with Typhoon Man-yi following Usagi. The rapid succession of these systems placed considerable strain on infrastructure and emergency management resources across the Western Pacific, including Taiwan.
As Usagi moved through Taiwan, the Central Weather Administration continued to update warnings and advisories. The storm's path and intensity were closely monitored to minimize further disruptions. The historical context of this event, with four simultaneous cyclones, underscored the changing dynamics of tropical cyclone activity in the region. This period in mid-November 2024 will be remembered for the unusual concentration of tropical systems and their widespread impacts on multiple countries in the Western Pacific.
Retirement of the names Usagi and Ofel
The significant impact of Typhoon Usagi, known locally as Super Typhoon Ofel, triggered formal administrative actions regarding the cyclone’s nomenclature. Following the storm’s passage through the Western Pacific in November 2024, both regional meteorological bodies initiated the retirement process to prevent future confusion and to honor the distinct severity of the event. The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) is the governing body responsible for local naming conventions in the Philippines.
PAGASA Retirement of 'Ofel'
In the Philippines, the name 'Ofel' was officially retired by PAGASA. This administrative step ensures that the name is not reused for subsequent tropical cyclones entering the Philippine Area of Responsibility (PAR). The retirement reflects the substantial impact the storm had on the region, particularly in Luzon, where it was one of five consecutive tropical cyclones to strike within a four-week span. PAGASA replaced the retired name 'Ofel' with the new name 'Onos' for future use in the local naming list. This replacement follows the standard rotational naming system used by the agency to track seasonal storms.
ESCAP/WMO Retirement of 'Usagi'
On the international level, the name 'Usagi' was retired by the ESCAP/WMO Typhoon Committee. This committee coordinates the naming of tropical cyclones in the Western Pacific basin. The retirement of 'Usagi' acknowledges the storm’s intensity and its historical context as part of a rare quadruple-cyclone event in November, a phenomenon not seen since records began in 1951. The committee replaced 'Usagi' with the name 'Hebi' for future seasons. This dual retirement process—locally by PAGASA and internationally by the Typhoon Committee—ensures clarity in meteorological records and public communication for both domestic and international stakeholders.
See also
- San Bernardino Strait: Geography, Maritime History and Strategic Importance
- Coron, Palawan: Municipality, History and Tourism
- San Juan, Batangas: History, Geography and Municipal Profile
- Camaya Coast: Residential Development and Seaside Resort in Bataan
- Pujada Bay: Geography, Marine Ecology and Protected Landscape