No, Lan is no longer active. It dissipated or transitioned into an extratropical cyclone on 2023-08-18T12:00:00.000Z.
Lan formed on 2023-08-06T00:00:00.000Z and dissipated on 2023-08-18T12:00:00.000Z, reaching a peak intensity of extratropical.
Lan achieved maximum sustained winds of approximately 166 km/h (90 kt / 103 mph) and a minimum central pressure of approximately 940 hPa.
According to current track forecasts, Lan is expected to pass near Osaka with a closest approach of approximately 38 km, suggesting a higher potential for direct impacts.
Based on track data, Lan is expected to remain approximately 409 km from Yokohama, with minimal direct threats currently anticipated.
Based on track data, Lan is expected to remain approximately 423 km from Tokyo, with minimal direct threats currently anticipated.
Based on track data, Lan is expected to remain approximately 444 km from Fukuoka, with minimal direct threats currently anticipated.
Projected rainfall totals of approximately 50-150 mm (2-6 inches) may occur in affected areas, creating risks of flash flooding and urban flooding.
Yes. Tropical systems carry abundant moisture, and outer rainbands can trigger flash flooding, river flooding, and urban flooding.
Adjust preparations based on the storm category and official advice. Secure outdoor items, prepare emergency supplies, keep backup power available, and follow official advisories.
Evacuation decisions must strictly follow official directives issued by local emergency management agencies. If an evacuation order is issued, evacuate immediately using designated routes. Do not rely solely on a single forecast model.
StormAtlas regularly updates based on publicly available data from international meteorological agencies. The latest data update was at August 12, 2026 at 08:04 PM.
Lan developed over warm ocean waters under conditions of high atmospheric moisture and low vertical wind shear.
The forecast path integrates data from multiple international meteorological agencies and numerical weather prediction models (such as NHC, JMA, JTWC, and CMA) using ensemble forecasting methods to generate probabilistic forecast tracks.
Storm Timeline
Lan at 49.2°N, 154.3°E as Extratropical Cyclone with winds of 0 km/h
Lan at 48.9°N, 152.4°E as Extratropical Cyclone with winds of 0 km/h
Lan at 48.5°N, 150.6°E as Extratropical Cyclone with winds of 0 km/h
Lan at 48.2°N, 149.0°E as Extratropical Cyclone with winds of 0 km/h
Lan at 47.8°N, 147.4°E as Extratropical Cyclone with winds of 0 km/h
Lan at 47.4°N, 145.8°E as Extratropical Cyclone with winds of 0 km/h
Lan at 47.0°N, 144.2°E as Extratropical Cyclone with winds of 0 km/h
Lan at 46.5°N, 142.6°E as Extratropical Cyclone with winds of 0 km/h
Lan at 46.0°N, 141.2°E as Extratropical Cyclone with winds of 54 km/h (34 mph)
Lan at 45.4°N, 140.2°E as Tropical Depression with winds of 61 km/h (38 mph)
Lan at 44.9°N, 139.5°E as Tropical Storm with winds of 65 km/h (40 mph)
Lan at 44.5°N, 138.9°E as Tropical Storm with winds of 68 km/h (42 mph)
Lan at 44.0°N, 138.4°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 43.1°N, 138.0°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 42.1°N, 137.5°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 41.4°N, 137.0°E as Tropical Storm with winds of 68 km/h (42 mph)
Lan at 40.8°N, 136.4°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 40.2°N, 136.2°E as Tropical Storm with winds of 65 km/h (40 mph)
Lan at 39.7°N, 136.0°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 38.9°N, 135.7°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 38.2°N, 135.4°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 37.6°N, 135.0°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 37.0°N, 134.7°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 36.5°N, 134.7°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 36.1°N, 134.7°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 35.6°N, 134.8°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 35.1°N, 134.9°E as Tropical Storm with winds of 90 km/h (56 mph)
Lan at 34.8°N, 135.0°E as Tropical Storm with winds of 90 km/h (56 mph)
Lan at 34.6°N, 135.1°E as Tropical Storm with winds of 90 km/h (56 mph)
Lan at 34.1°N, 135.3°E as Tropical Storm with winds of 101 km/h (63 mph)
Lan at 33.7°N, 135.7°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 33.4°N, 135.9°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 33.3°N, 136.0°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 33.0°N, 136.3°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 32.7°N, 136.6°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 32.5°N, 136.7°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 119 km/h (74 mph)
Lan at 32.3°N, 136.9°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 119 km/h (74 mph)
Lan at 32.1°N, 137.2°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 130 km/h (81 mph)
Lan at 31.8°N, 137.5°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 130 km/h (81 mph)
Lan at 31.5°N, 137.8°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 162 km/h (101 mph)
Lan at 31.3°N, 138.0°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 130 km/h (81 mph)
Lan at 31.0°N, 138.3°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 30.8°N, 138.5°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 137 km/h (85 mph)
Lan at 30.5°N, 138.7°E as Category 2 (equivalent to Category 1 Hurricane) with winds of 151 km/h (94 mph)
Lan at 30.3°N, 138.9°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 137 km/h (85 mph)
Lan at 30.0°N, 139.3°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 144 km/h (89 mph)
Lan at 29.8°N, 139.6°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 137 km/h (85 mph)
Lan at 29.5°N, 139.8°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 133 km/h (83 mph)
Lan at 29.3°N, 140.0°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 137 km/h (85 mph)
Lan at 29.2°N, 140.3°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 133 km/h (83 mph)
Lan at 29.1°N, 140.7°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 148 km/h (92 mph)
Lan at 29.0°N, 141.1°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 137 km/h (85 mph)
Lan at 28.9°N, 141.4°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 28.7°N, 141.6°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 144 km/h (89 mph)
Lan at 28.5°N, 141.8°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 28.4°N, 142.1°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 28.2°N, 142.4°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 28.1°N, 142.5°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 27.9°N, 142.6°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 27.7°N, 142.8°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 27.4°N, 142.9°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 27.1°N, 142.9°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 26.8°N, 142.9°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 26.6°N, 142.9°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 26.3°N, 142.9°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 166 km/h (103 mph)
Lan at 26.1°N, 143.0°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 25.9°N, 143.2°E as Category 2 (equivalent to Category 2 Hurricane) with winds of 155 km/h (96 mph)
Lan at 25.7°N, 143.3°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 148 km/h (92 mph)
Lan at 25.5°N, 143.5°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 137 km/h (85 mph)
Lan at 25.3°N, 143.6°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 148 km/h (92 mph)
Lan at 25.2°N, 143.9°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 119 km/h (74 mph)
Lan at 25.1°N, 144.3°E as Category 1 (equivalent to Category 1 Hurricane) with winds of 130 km/h (81 mph)
Lan at 25.0°N, 144.6°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 24.9°N, 145.0°E as Tropical Storm with winds of 115 km/h (71 mph)
Lan at 24.8°N, 145.3°E as Tropical Storm with winds of 101 km/h (63 mph)
Lan at 24.7°N, 145.7°E as Tropical Storm with winds of 108 km/h (67 mph)
Lan at 24.5°N, 146.0°E as Tropical Storm with winds of 90 km/h (56 mph)
Lan at 24.4°N, 146.5°E as Tropical Storm with winds of 101 km/h (63 mph)
Lan at 24.2°N, 146.9°E as Tropical Storm with winds of 90 km/h (56 mph)
Lan at 24.2°N, 147.3°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 24.3°N, 147.6°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 24.3°N, 148.0°E as Tropical Storm with winds of 79 km/h (49 mph)
Lan at 24.2°N, 148.3°E as Tropical Storm with winds of 83 km/h (52 mph)
Lan at 24.2°N, 148.5°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 24.1°N, 148.7°E as Tropical Storm with winds of 72 km/h (45 mph)
Lan at 24.1°N, 149.0°E as Tropical Depression with winds of 61 km/h (38 mph)
Lan at 24.1°N, 149.2°E as Tropical Storm with winds of 65 km/h (40 mph)
Lan at 24.0°N, 149.4°E as Tropical Depression with winds of 54 km/h (34 mph)
Lan at 23.8°N, 149.5°E as Tropical Depression with winds of 54 km/h (34 mph)
Lan at 23.5°N, 149.6°E as Tropical Depression with winds of 50 km/h (31 mph)
Lan at 23.4°N, 149.5°E as Tropical Depression with winds of 43 km/h (27 mph)
Lan at 23.3°N, 149.4°E as Tropical Depression with winds of 43 km/h (27 mph)
Lan at 23.3°N, 149.2°E as Tropical Depression with winds of 43 km/h (27 mph)
Lan at 23.3°N, 148.9°E as Tropical Depression with winds of 40 km/h (25 mph)
Lan at 23.3°N, 148.5°E as Tropical Depression with winds of 36 km/h (22 mph)
Lan at 23.6°N, 148.0°E as Tropical Depression with winds of 36 km/h (22 mph)
Lan at 23.7°N, 147.5°E as Tropical Depression with winds of 36 km/h (22 mph)
Lan at 23.7°N, 147.1°E as Tropical Depression with winds of 32 km/h (20 mph)
Lan at 23.8°N, 146.6°E as Tropical Depression with winds of 25 km/h (16 mph)
Lan at 24.0°N, 146.0°E as Tropical Depression with winds of 25 km/h (16 mph)
Lan at 24.2°N, 145.5°E as Tropical Depression with winds of 25 km/h (16 mph)
Lan at 24.4°N, 145.2°E as Tropical Depression with winds of 22 km/h (14 mph)
Lan at 24.5°N, 145.1°E as Tropical Depression with winds of 18 km/h (11 mph)
Typhoon Lan (2023): A Comprehensive Retrospective
Formation and Meteorological History
Typhoon Lan, known in the Philippines as Super Typhoon Betty, was a powerful tropical cyclone that formed from a tropical disturbance southeast of the Ogasawara Islands in early August 2023. It rapidly intensified into a super typhoon, reaching Category 4-equivalent strength on the Saffir-Simpson scale, with sustained winds of 240 km/h (150 mph). The storm tracked northwestward, influenced by a subtropical ridge, before recurving northeastward and making landfall in Japan on August 15, 2023, near the Kii Peninsula. The storm underwent an extratropical transition as it moved over the Sea of Japan, where anomalously high sea surface temperatures (SSTs) contributed to heavy rainfall on the north side of western Japan.
Impact and Damages
Japan: Lan brought torrential rainfall, strong winds, and storm surge to central and western Japan. The hardest-hit areas included the Kansai and Chugoku regions. Rainfall totals exceeded 400 mm in some locations, leading to widespread flooding and landslides. At least 10 fatalities were reported, with dozens injured. Over 200,000 households lost power, and transportation networks were severely disrupted, including the suspension of Shinkansen bullet train services and flight cancellations at major airports. Agricultural damage was significant, with rice paddies and orchards inundated. Economic losses were estimated at over $2 billion.
Philippines: Although Lan did not make landfall in the Philippines, it enhanced the southwest monsoon (Habagat), bringing heavy rains to Luzon and the Visayas. Flooding and landslides affected thousands of residents, with at least 5 deaths reported. Agricultural damage in the Ilocos and Cagayan Valley regions was substantial.
China: The storm's outer rainbands affected Taiwan and parts of eastern China, causing localized flooding and gusty winds. No major casualties were reported.
South Korea: Lan passed to the east, but its outer bands brought heavy rain to the southern coast, causing minor flooding and power outages.
Government Response and Relief Efforts
Japan: The Japan Meteorological Agency (JMA) issued early warnings and evacuation orders for over 1 million residents in high-risk areas. The Self-Defense Forces were deployed for rescue and relief operations. The government allocated emergency funds for disaster recovery, including infrastructure repair and agricultural support.
Philippines: The National Disaster Risk Reduction and Management Council (NDRRMC) coordinated preemptive evacuations and provided relief goods. The Department of Social Welfare and Development (DSWD) distributed food packs and hygiene kits.
International: The United Nations Office for the Coordination of Humanitarian Affairs (OCHA) offered assistance, but Japan declined, citing sufficient domestic capacity.
