Two atmospheric rivers are forecast to hit the Pacific Northwest and northern California, starting late Thursday, October 23, 2025. The systems are forecast to bring in heavy rainfall of over 130 mm (5 inches) along with mountain snow across Washington, Oregon, and northern California.
Tropical Storm Melissa could strengthen into a major hurricane over the weekend as it moves slowly through the central Caribbean on Wednesday, October 22, 2025. The system is forecast to bring heavy rainfall and flooding across parts of Hispaniola and Jamaica through the remainder of the week.
Heavy rain since late September triggered destructive floods and landslides across Honduras, killing at least 16 people and affecting over 34 000, as October 22, 2025. National and local authorities declared states of emergency in the departments of Francisco Morazán, La Paz, Intibucá and Lempira, as well as in the capital district of Tegucigalpa.
Tropical Storm Melissa, the 13th named storm of the 2025 Atlantic hurricane season, formed on Tuesday, October 21, 2025. A Tropical Storm Watch is in effect for Haiti, and a Severe Weather Alert remains active for Jamaica as the system brings the risk of heavy rainfall, flash floods, and landslides across both countries.
Forecast data indicate an early weakening and displacement of the stratospheric polar vortex over the Arctic in October 2025, as a developing high-pressure anomaly over Greenland interacts with the circulation earlier than usual, increasing the chances of colder air movement toward the mid-latitudes of North America and Europe.
A low-pressure area in the Caribbean Sea, designated AL98, is forecast to develop into the 13th named storm of the 2025 Atlantic hurricane season, “Melissa,” later on October 21, 2025, with a 100% probability of cyclonic development within the next 48 hours.
The Pacific Northwest will see back-to-back atmospheric rivers (ARs) beginning late Thursday, October 23, 2025, bringing significant precipitation and unsettled weather conditions through the end of October.The Weather Prediction Center has issued a Marginal Risk of excessive rainfall for coastal areas of Washington, Oregon, and northern California as the AR approaches.
A deadly tornado struck the Val-d’Oise department, north-east of Paris, France, at around 17:45 LT (15:45 UTC) on October 20, 2025, killing one person and injuring nine, four critically. The violent, short-lived storm collapsed several construction cranes in Ermont, caused widespread roof damage, and uprooted trees across neighbouring municipalities.
New Zealand is set for a week of active weather as multiple systems track across the country from October 20 to 23, 2025. MetService warns of strong northwesterlies and heavy rain early in the week, followed by another intense front on Thursday that may bring more severe impacts to already affected areas.
Tropical Storm Fengshen (locally named Ramil in the Philippines) crossed Luzon on October 18 and 19, 2025, producing torrential rain, flooding, and landslides. At least five people were killed in Quezon Province, while two others remain missing in Bukidnon after a landslide.
