Heavy rain and severe thunderstorms are forecast to continue spreading across Texas and the southern Plains late Friday into early Saturday, October 24 into 25, 2025 bringing the threat of flash flooding, damaging winds, large hail, and isolated tornadoes.
A multi-day lake-effect rain event is forecast to unfold over the Great Lakes starting Thursday, October 23, 2025. The event is forecast to drop 25 – 50 mm (1 – 2 inches) of rainfall along the I-90 corridor between Buffalo, New York, and Cleveland, Ohio, through the weekend.
A Hurricane Watch was issued on October 23, 2025, as Tropical Storm Melissa approached Hispaniola and Jamaica, bringing the threat of heavy rainfall and life-threatening flooding. The storm is forecast to strengthen into a hurricane by the weekend and possibly a major hurricane early next week, producing heavy rain, flash flooding, and landslides across Jamaica, Haiti, the Dominican Republic, Puerto Rico, and parts of Cuba.
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.
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.
Several tornadoes were reported across Arkansas, Louisiana, and Mississippi on the evening of October 18, 2025, including a radar-confirmed tornadic debris signature 3 km (2 miles) southwest of Yazoo City, Mississippi, at 21:34 LT. Earlier, a tornado caused structural damage in Hot Spring County, Arkansas, near De Roche, while another debris signature was detected near Warsaw, Louisiana, as supercells moved east across the Lower Mississippi Valley.
A powerful atmospheric river is forecast to impact the western United States between October 25 and 31, 2025, bringing heavy rainfall, mountain snow, and high winds from Northern California to Washington.
Episode 35 of the ongoing Halemaʻumaʻu eruption at Kīlauea volcano began at 20:05 HST on October 17, 2025 (06:05 UTC on October 18), producing simultaneous fountains from the north and south vents that reached record heights of approximately 460 m (1 500 feet). The eruption cloud rose above 6 000 m (20 000 feet) while lava flows remained contained within the crater.
