Tropical Storm Maysak (2026)

Severe Tropical Storm Maysak (Henry)
Maysak at peak intensity shortly after landfall in South China late on July 4
Meteorological history
FormedJuly 1, 2026 (2026-07-01)
Remnant lowJuly 7, 2026 (2026-07-07)
DissipatedJuly 8, 2026 (2026-07-08)
Severe tropical storm
10-minute sustained (JMA)
Highest winds95 km/h (60 mph)
Lowest pressure990 hPa (mbar); 29.23 inHg
Tropical storm
1-minute sustained (SSHWS/JTWC)
Highest winds95 km/h (60 mph)
Lowest pressure988 hPa (mbar); 29.18 inHg
Overall effects
Fatalities171+
Injuries331+
Missing10+
Damage≥$3.35 billion (2026 USD)
Areas affectedPhilippines, Vietnam, Laos, China
Part of the 2026 Pacific typhoon season

Severe Tropical Storm Maysak,[a] known in the Philippines as Tropical Depression Henry and in Vietnam as Typhoon No. 1 of 2026 (Bão số 1 năm 2026), was a compact and moderately strong but deadly tropical cyclone that affected some portions of Luzon in the Philippines, Hainan, China and Northern Vietnam in early July 2026. It is also the tenth named storm of the 2026 Pacific typhoon season.

Maysak originated from an area of convection that developed east-southeast of Manila on June 29. On July 1, PAGASA upgraded the system into a tropical depression, assigning the local name Henry. The Japan Meteorological Agency (JMA) followed suit on the same day while the system was moving northwestwards. The Joint Typhoon Warning Center (JTWC) also followed suit afterwards, designating Henry as 10W. On July 2, JMA upgraded Henry into a tropical storm, as it was assigned the name Maysak. Maysak made landfall near Lingshui, Hainan Province on July 3. On July 4, the JMA upgraded Maysak into a severe tropical storm, before it made its final landfall over Móng Cái, Quảng Ninh province.

The remnants of Maysak spawned a significant tornado outbreak in southeastern and eastern China, claiming the lives of 12 people and injured 331. Overall, at least ten tornadoes were reported during this outbreak. Meanwhile, 159 people were killed from a flooding in Guangxi and caused an estimated damage amounted to ¥22.18 billion (US$3.28 billion). In Vietnam, total reported damage was estimated to US$1.07 million.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On June 29, an area of convection had developed 591 nm (1,095 km) of Manila, with satellite imagery indicating an elongated low-level circulation center (LLCC) with disorganized convection throughout the northern periphery, citing a medium potential of tropical cyclogenesis.[2] At 02:00 PHT of July 1 (18:00 UTC of June 30), PAGASA upgraded the disturbance into a tropical depression as it crossed over southern Luzon, with the system being assigned the local name Henry.[3] Meanwhile, at 21:00 UTC, JTWC upgraded its chances to high, prompting to issue a TCFA warning as Henry moved through favorable conditions.[4] Early on July 1, the JMA classified Henry as a tropical depression, citing poor positional accuracy due to an obscure cloud system center (CSC), while inside a neutral environment under the influence of high sea-surface temperatures (SSTS), high tropical cyclone heat potential, good upper-level outflow, and dry air. By 18:00 UTC, the system started moving west-northwestwards along the southwestern periphery of a mid-level subtropical high.[5] At 21:00 UTC, the JTWC followed suit, designating Henry as 10W.[6]

By 06:00 UTC, Henry entered a favorable environment for development, although its limited firmness of its structure caused the system to maintain its intensity.[5] Multispectral satellite imagery (MSI) depicted the system with an exposed LLCC that was removed from the sheared convection to the southeast.[6] However, shortly after, Henry returned to a neutral environment for development, with water vapor imagery showing dry air in the system's movement, active convective cloud clusters around the CSC.[5] However, by 15:00 UTC, the system started to reorganize itself around the broader-surrounding cyclonic circulation.[6] At 18:00 UTC, JMA upgraded Henry into a tropical storm, assigning the name Maysak to the system.[5] Later, Maysak exhibited multiple vortices wrapping around a cyclonic rotation that is south of Hainan.[6] Early on July 3, the storm obtained good cloud characteristics of anticyclonic outflow while slowly moving north-northwestward.[5] By 03:00 UTC, the JTWC upgraded Maysak into a tropical storm, with animated MSI depicting some slow consolidation with an irregular central dense overcast (CDO) overlaying an obscured LLCC.[6] At 10:20 UTC, Maysak made its first landfall near Lingshui, Hainan Province.[7] Satellite imagery then depicted the storm with a compact vortex with deep convection over the LLCC in the southwestern quadrant.[6]

Early on July 4, MSI showed that the storm's cumulonimbus clusters began forming a curved band around the CSC,[5] before moving to a marginally favorable, thermodynamic and kinematic environment characterized by high tropospheric moisture content, and sustained moderate upper-level divergence.[6] As Maysak moved through the Gulf of Tonkin, the JMA upgraded it into a severe tropical storm[5] before the system made its second and final landfall in Móng Cái, Quảng Ninh province on July 4 at 12:30 UTC.[8] At 15:00 UTC, the JTWC issued their final reasoning on Maysak as the storm starts containing rich deep-layer moisture and land interaction.[6] Maysak later moved inland, causing the JMA to downgrade it to a tropical depression on July 5 at 18:00 UTC. At the same time, JMA issued its final warning as Maysak moved further inland, tracking north-northeastwards.[5]

Preparations

Philippines

On July 1, at 05:00 PHT (21:00 UTC of the previous day), PAGASA issued Tropical Cyclone Wind Signal No. 1 in the southwestern portion of Zambales, eastern portion of Bataan, and Lubang Islands.[9] All wind signals were halted six hours later.[10]

Hong Kong and Macau

On July 1, the Meteorological and Geophysical Bureau (SMG) issued Signal No. 1 at 23:00 MST (15:00 UTC).[11] On July 2, the Hong Kong Observatory (HKO) issued the Standby Signal No. 1 at 07:40 HKT (23:40 UTC).[12] On July 3, the SMG issued Signal No. 3 at 20:00 MST (12:00 UTC).[13] On July 4, the HKO cancelled all Tropical Cyclone Warning Signals at 03:20 HKT (19:20 UTC) and issued the Strong Monsoon Signal immediately afterwards.[14] At 06:00 MST (22:00 UTC), the SMG issued Signal No. 1.[15] At 12:30 MST (04:30 UTC), the SMG canceled Signal No. 1.[16] At 16:45 HKT (08:45 UTC), the HKO canceled the Strong Monsoon Signal.[17]

Impact

Vietnam

In Vietnam, strong winds from Maysak uprooted trees and ripped metal roofs off buildings in Móng Cái,[18] and caused US$1.07 million worth of damage in the country.[19][20]

Laos

Maysak and Typhoon Bavi triggered severe flooding in Khounkham district, Khammouane province in Laos.Total losses in Khounkham district reached LAK 39.7 billion (about USD 1.75 million).[21]

China

In Guangxi, Nanning and Guigang, flooding killed 159 people, left ten missing and had affected more than 1.65 million people; 26 of the deaths were related to a dam breach in Nanning.[22] Severe flooding also submerged cars and trapped people in Fangchenggang while in Dongxing, trees were uprooted by strong winds.[18] The storm also spawned 10 tornadoes in China, including one in Hubei, an EF3 tornado related to Maysak killed 12 people, injured 331, and damaged 23000 buildings.[23][24] Damage in Guigang, Guangxi totaled to ¥560 million (US$82.3 million).[25] Two sections of a dam in the Liulan Reservoir of Hengzhou collapsed on July 6, which sent a massive torrent downstream.[26] The figure was later revised as total damage in Guangxi Province amounted to ¥22.18 billion (US$3.28 billion).[27][28]

Sanya endured a night of wind and rain, due to Maysak.

Wind gusts of 32.6 metres per second (73 mph) (level 11) were recorded in Haitang District, Sanya City, in the coastal region of Guangdong. Generally, winds were strong at levels 7–9 with gusts of 10–11, and some areas experienced gusts of 11–13. In Guangxi, strong winds of levels 10–11 were observed in the Gulf of Tonkin and along the coast of Fangcheng Port and Qinzhou prefectures, with localized gusts reaching level 12 or higher. Gusts in Jiangshan Town, Fangcheng District, Fangcheng Port City reached 46.9 metres per second (105 mph) (level 15). Very heavy rainfall occurred in Guangxi; Nanping Yao Township (Shangsi County, Fangcheng Port City) recorded a total accumulated rainfall of 671.9 mm (26.45 in) in 24 hours, while Shafu Town (Qinnan District, Qinzhou City) recorded a peak hourly rainfall of 186.2 mm (7.33 in).[29]

Confirmed tornadoes

Confirmed tornadoes by Enhanced Fujita rating
EFU EF0 EF1 EF2 EF3 EF4 EF5 Total
0 1 3 0 3 0 0 10
A deadly EF3 tornado near Ezhou, China

Severe thunderstorms associated with the remnants of Severe Tropical Storm Maysak caused a small tornado outbreak in southeastern China and eastern China. Two tornadoes struck the Baiyun and Huadu districts of Guangzhou on July 4–5. The first tornado hit Baiyun District on July 4 and was rated EF0; the second tornado struck both Baiyun and Huadu on July 5, tearing off large areas of sheet‑metal factory roofs and uprooting or snapping numerous trees, and was rated EF1.[30] On July 6, the outbreak intensified. A tornado was confirmed in Qinzhou, Guangxi.[31] Later in the day, an EF1 tornado struck Qingyuan, Guangdong. That evening, two deadly EF3 tornadoes struck populated areas in Hubei Province. The first EF3 tornado touched down near Xianning and moved through Daye, causing severe damage to a brick‑and‑concrete building, killing two people and injuring 53 before lifting near Ezhou.[32][33][34] The second, widely documented, EF3 tornado touched down in Ezhou before crossing the Yangtze into Huanggang.[31] This tornado killed 12 people and injured 331. The total damage reached ¥450 million (US$66 million).[35][36] It collapsed walls of houses and damaged residential buildings, public facilities, windows, doors and the exterior facades of buildings and facilities on the campus of Huanggang Normal University. Many trees were uprooted and a power and water outage occurred.[37] An EF1 tornado also struck Yangxin in Huangshi on the same day. On July 7, an EF3 tornado passed through Huainan, Hefei, and Chuzhou in Anhui, followed by one unrated in Sihong County, Jiangsu, and another in Hongze District, Jiangsu.[31][38] Overall, at least ten tornadoes occurred during this outbreak.

List of confirmed tornadoes[31][34]
EF# Location Country Subdivision Date Time (UTC) Path length Max. width
EF0 Baiyun China Guangdong July 4 ~14:10
Preliminary information.
EF1 Baiyun, Huadu China Guangdong July 5 ~18:30
Preliminary information.
EF? Qinnan China Guangxi July 6 ~05:00
Preliminary information.
EF1 Qingxin China Guangdong July 6 ~08:40
Preliminary information.
EF3 Xianning, Daye, Huangshi, Ezhou China Hubei July 6 ~10:50
2 deaths – There were 51 injuries. Preliminary information.
EF3 Ezhou, Huanggang China Hubei July 6 ~12:00
11 deaths – There were 331 injuries. Preliminary information.
EF1 Yangxin, Huangshi China Hubei July 6 ~13:00
Preliminary information.
EF3 Huainan, Hefei, Chuzhou China Anhui July 7 ~21:00
An EF3 tornado was confirmed. Preliminary information.
EF? Sihong County China Jiangsu July 7 ~23:20
Preliminary information.
EF? Hongze China Jiangsu July 7 ~04:00
Preliminary information.

See also

Notes

  1. ↑ The name Maysak (Khmer: ម៉ៃសាក់, [maj.ˈsaʔ]) was contributed by Cambodia and means teak (Tectona grandis) in Khmer.[1]

References

  1. ↑ "List of names for tropical cyclones adopted by the ESCAP/WMO Typhoon Committee for the western North Pacific and the South China Sea (valid as of 2025)". Japan Meteorological Agency. Retrieved March 16, 2026.
  2. ↑ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 06Z 29 June 2026 (Report). United States Joint Typhoon Warning Center. June 29, 2026. Archived from the original on June 29, 2026. Retrieved June 29, 2026.
  3. ↑ Rojas, Ariel (July 1, 2026). "LPA off Bataan develops into Henry; Signal no. 1 up in three areas". ABS-CBN News. Retrieved July 7, 2026.
  4. ↑ Tropical Cyclone Formation Alert (Invest 96W) (Report). United States Joint Typhoon Warning Center. June 30, 2026. Archived from the original on June 30, 2026. Retrieved July 1, 2026.
  5. 1 2 3 4 5 6 7 8 Prognostic Reasoning No. 1 for TD (Report). Japan Meteorological Agency. July 1, 2026. Archived from the original on July 1, 2026. Retrieved July 7, 2026.
  6. 1 2 3 4 5 6 7 8 Prognostic Reasoning for Tropical Depression 10W (Ten) Warning No. 1 (Report). United States Joint Typhoon Warning Center. July 1, 2026. Archived from the original on July 2, 2026. Retrieved July 2, 2026.
  7. ↑ Typhoon Maysak makes landfall in Hainan, triggers closures (Report). China Daily. July 3, 2026. Retrieved July 4, 2026.
  8. ↑ "Latest storm news: Typhoon Maysak (Typhoon No. 1) has made landfall in Mong Cai; tonight is when winds on land will reach their strongest intensity". Báo Dân Việt. July 4, 2026. Retrieved July 4, 2026 – via Vietnam.vn.
  9. ↑ "Tropical Cyclone Bulletin #1 for Tropical Depression 'Henry'" (PDF). PAGASA. July 8, 2026. Archived from the original (PDF) on July 1, 2026. Retrieved July 8, 2026.
  10. ↑ "Tropical Cyclone Bulletin #2 for Tropical Depression 'Henry'" (PDF). PAGASA. July 8, 2026. Archived from the original (PDF) on July 1, 2026. Retrieved July 8, 2026.
  11. ↑ "1號風球料日間維持 明晨3號風球機會中等". TDM (in Chinese). July 2, 2026. Retrieved July 2, 2026.
  12. ↑ "天文台：一號戒備信號今日維持 評估是否需要明日改發三號信號 - RTHK". RTHK (in Chinese). July 2, 2026. Retrieved July 2, 2026.
  13. ↑ "3號風球生效 料明日清晨前維持". TDM (in Chinese). July 3, 2026. Retrieved July 3, 2026.
  14. ↑ "天文台取消所有熱帶氣旋警告信號 改發強烈季候風信號". RTHK. July 4, 2026. Retrieved July 4, 2026.
  15. ↑ "氣象局改發1號風球 料上午維持". TDM. July 4, 2026. Retrieved July 4, 2026.
  16. ↑ "所有熱帶氣旋警告12:30取消 視風力考慮發黑球". TDM. July 4, 2026. Retrieved July 4, 2026.
  17. ↑ "強烈季候風信號取消". RTHK (in Chinese). July 4, 2026. Retrieved July 4, 2026.
  18. 1 2 "Heavy rains leave 5 dead in China's north while Tropical Storm Maysak hits the south and Vietnam". WRIC-TV. July 5, 2026. Retrieved July 5, 2026.
  19. ↑ "Bão Maysak gây thiệt hại khoảng 20 tỷ đồng tại Quảng Ninh". Dan Tri. July 5, 2026. Retrieved July 6, 2026.
  20. ↑ "Remnants of Typhoon Maysak cause widespread damage in N. Vietnam". The Star. July 6, 2026. Retrieved July 7, 2026.
  21. ↑ "Storms Maysak and Bavi leave over 6,500 people affected in Laos' Khammouane district". The Star. July 27, 2026. Retrieved August 14, 2026.
  22. ↑ "Death toll from south China floods jumps to 159". Free Malaysia Today. August 21, 2026. Retrieved August 21, 2026.
  23. ↑ "Man blown from 12th-floor apartment as deadly tornado rips through central China". CNN News. July 7, 2026. Retrieved July 9, 2026.
  24. ↑ "国家防灾减灾救灾委员会办公室 应急管理部 发布2026年7月全国自然灾害情况". 中華人民共和國應急管理部 (in Chinese). August 14, 2026. Retrieved August 14, 2026.{{cite news}}: CS1 maint: url-status (link)
  25. ↑ "广西贵港紧急转移避险人口7.2万余人". Sohu. July 13, 2026. Retrieved July 13, 2026.
  26. ↑ Maharani, Sinta (July 9, 2026). "Typhoon Maysak Slams China Triggering Floods and Deadly Tornadoes". Readers.id. Retrieved July 15, 2026.
  27. ↑ "台风"美莎克"已造成广西260多万人受灾 直接经济损失221.8亿元". Sohu. July 16, 2026. Retrieved July 16, 2026.
  28. ↑ "已造成损失221.8亿元!台风"美莎克"重创广西". Guangxi News Network. July 16, 2026. Retrieved July 16, 2026.
  29. ↑ "Maximum rainfall reached 669.3 mm! Typhoon Maysak moved deep into Guangxi, bringing strong winds and heavy rain; the rain will continue..." gxnews. July 5, 2026. Retrieved July 18, 2026.
  30. ↑ "Sina Visitor System". passport.weibo.com. Retrieved July 6, 2026.
  31. 1 2 3 4 龙卷风重点实验室. "龙卷时讯2026年第7期｜台风"美莎克"生成10个龙卷风". Weixin Official Accounts Platform. Retrieved July 15, 2026.
  32. ↑ "湖北大冶居民讲述龙卷风来袭过程：持续不到两分钟，但把家里房顶都掀翻了". m.thepaper.cn. Retrieved July 7, 2026.
  33. ↑ 澎湃新闻 (July 7, 2026). "湖北黄石：昨日特大龙卷风致2死51伤，已转移安置300余名受灾群众_手机网易网". www.163.com. Retrieved July 8, 2026.
  34. 1 2 "台风"美莎克"共催生10个龙卷风". www.sohu.com (in Chinese (China)). Retrieved July 15, 2026.
  35. ↑ "国家防灾减灾救灾委员会办公室 应急管理部 发布2026年7月全国自然灾害情况". 中華人民共和國應急管理部 (in Chinese). August 14, 2026. Retrieved August 14, 2026.{{cite news}}: CS1 maint: url-status (link)
  36. ↑ "龍捲風襲湖北11死-居民遭捲走墮樓". Ming Pao Newspaper (in Chinese). July 8, 2026.
  37. ↑ "台风"美莎克"残余环流诱发 湖北两地遭强楔型龙卷风横扫" [The remnants of Typhoon Maysak triggered strong wedge-shaped tornadoes that swept across two areas of Hubei Province.] (in Chinese). mydrivers.com. July 7, 2026. Retrieved July 6, 2026.
  38. ↑ CHU抗风抗震. "鄂皖两地龙卷风灾情简报". Weixin Official Accounts Platform. Retrieved July 18, 2026.
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