PAGASA upgraded Tropical Depression Nando (internationally known as Ragasa) to a tropical storm at 23:00 LT (15:00 UTC) on September 18, 2025. The system will continue to intensify while over the Philippine Sea and may reach typhoon category by Saturday, September 20. Further intensification into super typhoon category while traversing the Extreme Northern Luzon is not ruled out.
A strong and shallow earthquake registered by the USGS as M6.1 hit West Papua Region, Indonesia at 18:19 UTC on September 18 (03:19 LT on September 19), 2025. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth.
The PGA Tour has canceled the 2026 Sentry Tournament of Champions, originally scheduled for January 8–11 at the Plantation Course in Kapalua, Maui, Hawaii, due to severe drought and irrigation restrictions. The event, which has opened the PGA season at Kapalua since 1999, will not be contested at the course for the first time since…
Kīlauea summit, Hawaii, is showing strong gas pistoning and overflows ahead of the next eruptive episode, with Pele’s hair and volcanic gas already affecting the summit area and nearby communities. The Hawaiian Volcano Observatory (HVO) warns that episode 33 lava fountaining is expected to begin over the next 1 to 3 days.
Moisture from post-tropical Mario is forecast to spread into southern California on September 18, 2025, bringing thunderstorms and rainfall totals of 25–75 mm (1–3 inches) through Friday. Rainfall rates may exceed 25 mm/h (1 inch/h), prompting Flood Watches and Flash Flood Watches across much of the region. Arizona and New Mexico are also expected to see widespread showers and thunderstorms with localized flooding into September 19.
A gravity anomaly recorded by NASA–German GRACE satellites in early 2007 over the Atlantic Ocean points to mass redistribution near Earth’s core–mantle boundary, around 2 700–2 900 km (1 700–1 800 miles) deep. Researchers suggest a perovskite-to-post-perovskite mineral phase change produced decimetric boundary shifts, offering the first evidence that deep mantle processes can unfold within just a few years and potentially affect Earth’s magnetic field.
Tropical Storm Gabrielle, the 7th named storm of the 2025 Atlantic hurricane season, formed over the central Atlantic at 15:00 UTC on September 17, 2025. The system is moving north-northwest and is forecast to intensify over the next several days.
At least 18 people were killed and 16 reported missing after cloudbursts and landslides triggered by heavy rains struck Uttarakhand and Himachal Pradesh, India, on September 15–16, 2025. Authorities said more than 900 residents were stranded as roads and bridges were destroyed by flash floods.
Monsoon floods in Pakistan have killed at least 972 people and injured about 1 062 since June 26, 2025, affecting 6.3 million and displacing 2.9 million across the country. Khyber Pakhtunkhwa remains the worst-hit province with more than 500 fatalities, while Punjab has reported 290 deaths and Sindh over 173 000 displaced. Health authorities have also issued dengue alerts for major cities in Sindh, where stagnant floodwaters heighten the risk of outbreaks.
A strong earthquake registered by the USGS as M6.0 hit New Ireland region, Papua New Guinea at 16:59 UTC on September 16, 2025. The agency is reporting a depth of 77 km (48 miles). EMSC is reporting the same magnitude and depth.
