Typhoon Bavi, known in the Philippines as Super Typhoon Inday, was an extremely powerful, large, and long-lived tropical cyclone that affected the Northern Mariana Islands, Guam, the Philippines, China, and parts of Taiwan in July 2026. The ninth named tropical storm, third typhoon and second violent typhoon of the 2026 Pacific typhoon season, Bavi was the second violent typhoon of the season to affect the Mariana Islands, after Typhoon Sinlaku made landfall on Tinian in April.

The origins of Bavi started as a disturbance just east-southeast of Kwajalein on June 25, over favorable conditions. Seven days later, the Joint Typhoon Warning Center (JTWC) designated the disturbance as Tropical Depression 09W. It later received the name Bavi by the Japan Meteorological Agency (JMA) early on July 2 as it continued to organize over very warm sea surface temperatures and low vertical wind shear. Both agencies later upgraded Bavi into a typhoon as it quickly intensified. Rapid intensification ensued, and Bavi became a super typhoon less than a day later as a Category 5-equivalent typhoon according to the JTWC. An eyewall replacement cycle ensued causing some slight weakening overnight on July 4, but the typhoon quickly re-strengthened the following day before it made landfall on Rota in Northern Mariana Islands at peak intensity; the JMA estimated maximum sustained winds of 205 km/h (125 mph) and a central pressure of , while the JTWC assessed peak 1-minute sustained winds of 285 km/h (180 mph) and central pressure of . Late on July 7, PAGASA gave the local name Inday even though it was about to enter the Philippine Area of Responsibility (PAR) until it did so at 03:00 PHT of July 8 (19:45 UTC of the previous day). The storm made a final landfall in Zhejiang at tropical storm-equivalent intensity on July 11 before eventually curving towards the Yellow Sea, dissipating on July 16.

Bavi triggered heavy rains and landslides that killed 23 people and left 18 missing across the Philippines. Injuries were also recorded in Guam, the Ryukyu Islands in Japan, the Northern Mariana Islands and Taiwan.

Meteorological history

On June 25, 2026, the Joint Typhoon Warning Center (JTWC) marked a low-pressure area that formed east-southeast of Kwajalein, with satellite imagery indicated that the disturbance was in a favorable development for tropical cyclogenesis. Four days later, at 13:00 UTC, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert (TCFA) for the system, indicated that the disturbance had been gradually intensifying over favorable conditions. Early on July 1, JTWC upgraded the disturbance into a tropical depression, assigning the designation as 09W. At 00:00 UTC on July 2, 09W was upgraded into a tropical storm, gaining the name Bavi by the JMA.

Due to increasingly favorable conditions for tropical development, consisting of sea surface temperatures (SSTs) of , low wind shear of and high moisture levels, Bavi quickly intensified, with the JTWC upgrading Bavi to a typhoon at 18:00 UTC that day, with the JMA following suit six hours later. Bavi then began a period of explosive intensification, with the JTWC assessing the system's 1-minute sustained winds increasing from at 18:00 UTC July 2 to at 12:00 UTC July 3, in only 18 hours, making it a Category 4-equivalent typhoon, as a well-defined eye quickly emerged within a sharply defined central dense overcast (CDO) surrounding it. The outflow also expanded massively and improved in all quadrants. At the same time, the JMA upgraded Bavi to a very strong typhoon.

At 21:00 UTC the same day, JTWC upgraded Bavi into a super typhoon, with estimated 1-minute winds of , making it a Category 5-equivalent super typhoon. Later on, JMA upgraded Bavi to a violent typhoon. On July 4, the typhoon weakened slightly due to an eyewall replacement cycle, however by the following day it re-intensified back to a Category 5-equivalent super typhoon. At 08:40 local time on July 6 (22:40 UTC on July 5), Bavi made landfall on the northern coast of the island of Rota at peak intensity, with JTWC assessing its 1-minute sustained winds of and a central pressure of 901 hPa (mbar; 26.61 inHg), becoming one of the strongest typhoons in history to affect the Northern Mariana Islands. On July 7, another eyewall replacement cycle occurred, causing the storm to weaken below super typhoon strength before reintensifying back into a super typhoon. Even though it was still outside the Philippine Area of Responsibility (PAR) on July 7, PAGASA subsequently gave the local name Inday. This was the third time on record after Tropical Storm Pabuk in 2024 and Typhoon Fung-wong in 2025 that PAGASA named a system outside the PAR.

However, on July 9, increasing wind shear and a third eyewall replacement cycle caused the storm to weaken below super typhoon strength as the storm made a sharp turn to the northwest due to a subtropical ridge pulling it in. The system started to gradually weaken, with PAGASA downgrading it to Typhoon status on July 9. The system weakened quicker than originally forecasted and was downgraded to a category 1-equivalent typhoon on July 10 as a result of an incomplete eyewall replacement cycle, combined with the effects of cooler sea surface temperatures and increasing wind shear. As the typhoon proceeded northwest, it continually ballooned in size, and according to the Joint Typhoon Warning Center, Bavi's wind field ranked in the top 3% of all western Pacific typhoons during the previous decade, making it exceptionally large. At around 15:20 UTC on July 11, Bavi made landfall on the Chinese coast near Yuhuan, part of Zhejiang, and a second landfall at Yueqing, part of Wenzhou. Whilst inland, Bavi began to exhibit subtropical characteristics as it interacted with a strong upper-level trough allowing it to maintain a shallow convective pattern, prompting the JTWC to classify the system as a subtropical depression. On the following day, the JMA declared that Bavi had transitioned into an extratropical low. The remnants of Bavi accelerated to the northeast as it passed over the Korean Peninsula and traversed through the Sea of Japan before being absorbed by a larger low-pressure area towards the north of Hokkaido.

Preparations

China

Mainland

On July 8, the National Meteorological Center (NWC) issued a blue warning for a typhoon (lowest tier) for Fujian and Zhejiang provinces in China. On July 10, China's State Flood Control and Drought Relief Headquarters raised the emergency response for flood control and typhoon prevention in Zhejiang and Fujian from Level III to Level II under the nation's four-tier system, while activating a Level IV response for Hebei and Liaoning. The Ministry of Emergency Management dispatched working groups to Zhejiang and Fujian to guide local response efforts. Ahead of landfall, Zhejiang water resources authorities initiated a Level IV emergency response and maritime safety authorities activated a Level III response. Coastal regions were ordered to recall fishing vessels to port, evacuate offshore platform workers, and reinforce infrastructure against destructive winds; coastal tourist destinations were placed on high alert, with authorities advised to suspend operations if necessary. The public was urged to monitor forecasts, avoid travel, and prepare emergency supplies.

Hong Kong The outer subsiding air stream of Bavi brought extremely hot weather to Hong Kong, with temperatures rising up to 35 °C (95 °F) over the weekend. The Hong Kong Observatory warned the public of dangerous coastal swells and monitored the tightening pressure gradient to determine if a Strong Monsoon Signal was required as local winds veered southwesterly. The storm caused significant travel disruptions; dozens of weekend flights to Taiwan, the mainland of China, and Japan operated by local carriers were cancelled. Additionally, cross-border rail infrastructure was affected, leading to the cancellation of several high-speed rail services between Hong Kong West Kowloon and Shanghai. Contingency plans were also highlighted for the upcoming release of the Hong Kong Diploma of Secondary Education (HKDSE) examination results, which faced potential postponement if severe weather conditions persisted into the following week.

Taiwan At Fugang Fishing Harbor in Taitung, more than 10 fishing boat owners hired a crane to lift inflatable fishing rafts onto the shore to protect them from strong winds and waves, as previous typhoons had caused vessels to collide in the harbor.

Officials warned of wind gusts of and as much as of accumulated rainfall during the peak of the storm, with mountainous areas facing risk of extremely heavy rain. President Lai Ching-te urged people in a Facebook post to prepare supplies from food to torches, and posted a video teaching people how to pull together an emergency grab bag that could give life support for three days.

Guam On July 2, Guam Governor Lou Leon Guerrero declared a state of emergency as territory officials began preparing for Bavi. Two days later, a typhoon warning was issued for Guam and surrounding islands. Emergency evacuations were carried out on July 5. Authorities said the island could see of precipitation, resulting in potential flash floods. All flights were canceled at main airports in Guam and operations were suspended at several ports.

Northern Mariana Islands An extreme wind warning was issued for Rota, with widespread destructive winds in excess of expected. The National Weather Service warned that going outside could result in death from flying projectiles, with unreinforced structures being destroyed and utility poles and power lines being downed. They added that nearly all trees will be snapped or uprooted, power outages will last for weeks to possibly months and much of the area will be uninhabitable for weeks, perhaps longer. Emergency evacuations were carried out on July 5. On July 6, Typhoon Bavi became the strongest tropical cyclone on record to strike U.S. territory.

Philippines Even though Bavi was still outside the Philippine Area of Responsibility (PAR), the typhoon was given the local name Inday. PAGASA raised Tropical Cyclone Warning Signal No. 1 over the northeastern portion of Cagayan (later the whole province). The agency also subsequently raised Signal No. 1 over Apayao, Babuyan Islands, Batanes, northern and central portions of Catanduanes and Isabela, and the northern portion of Aurora when Bavi entered PAR. Signal number 2 was later raised over Batanes and eastern Babuyan Islands, while signal no. 1 was extended to Ilocos Norte, Kalinga, and parts of Abra, Ifugao, Mountain Province and Quirino. All wind signals were lifted after Bavi exited the PAR on July 11.

Impact

+ Casualties and damages by country/region Country  Deaths Missing Damages (USD) Source 0 0 >$ 0 0 Unknown 0 0 Unknown 23 14 >$ 0 0 >$ 0 0 >$ Total 23 14 >

Guam On Guam, the typhoon caused torrential rains and hurricane-force winds. At least four injuries were reported.

Northern Mariana Islands

Rota