Heavy rainfall and the bursting of river banks led to severe flooding in the Western Cape area of South Africa from September 23 to 26, 2023. The disaster resulted in multiple fatalities, thousands of evacuations, and significant infrastructure damage.
Storm Agnes formed on September 25, 2023, as the first named system of the 2023/24 North Atlantic storm season. Agnes is set to bring severe winds and waves to Ireland and the UK on Wednesday, September 27, 2023. Forecasters are particularly concerned due to unusually high sea surface temperatures in the Atlantic, which are contributing to the storm’s rapid intensification.
Tropical Storm “Ophelia” made landfall near Emerald Isle, North Carolina, around 10:15 UTC on September 23, 2023, with maximum estimated winds of 110 km/h (70 mph). The storm has since weakened into a post-tropical low but continued to pose a flooding risk across the Mid-Atlantic.
On September 19, 2023, the northeastern coastal province of Jiangsu in China was struck by a significant severe weather outbreak, with multiple tornadoes causing damage to more than 1 600 homes and tragically claiming the lives of at least 10 residents.
Two coronal mass ejections (CMEs) impacted Earth on September 18, 2023, producing G3 – Strong geomagnetic storming.
A rare tornado touched down near the towns of Saint-Pierre-des-Landes and Ernée in the department of Mayenne, NW France on Sunday afternoon (LT), September 17, 2023.
Medicane “Marquesa”, also known as Storm Daniel, made a devastating landfall in Libya on September 10, 2023, resulting in severe flash flooding, especially in the country’s northeast. The storm brought with it extremely heavy rainfall, leading to catastrophic flooding and a tragic death toll of over 4 500 people, with thousands still missing.
A powerful storm dubbed Daniel dropped exceptionally high amounts of rain over parts of central Greece on September 4 and 5, 2023, resulting in widespread flooding, destruction, and the tragic loss of at least 10 lives. Experts label this as the country’s worst storm since records began in 1930. The worst affected was the Thessaly Region, particularly its Magnesia prefecture.
A strong and shallow earthquake registered by the USGS as M6.8 hit Morocco’s High Atlas mountains at 22:11 UTC on Friday, September 8, 2023. The quake hit at 23:11 local time at a depth of 18.6 km (11.5 miles). EMSC is reporting M6.9 at a depth of 10 km (6.2 miles).
Extremely heavy rains brought by the remnants of Typhoon “Haikui” caused severe floods across Hong Kong on September 8, 2023, causing widespread disruption, evacuations, and leading to at least two fatalities.