Flood Watches are in effect across parts of Arizona, New Mexico, Utah and Colorado as successive Pacific moisture surges raise the flash-flood threat through early November 2, 2026. The Weather Prediction Center (WPC) has placed the Four Corners under a Moderate Risk of excessive rainfall for November 1, when it expects a high-impact heavy rainfall event over saturated ground.
A Bering Sea storm associated with the remnants of Typhoon Champi is forecast to raise water levels at Hooper Bay, Alaska, by 0.6–1.2 m (2–4 feet) above normal high tide from October 29 into early October 31, 2026. A Coastal Flood Advisory is in effect, while state officials reported that power had been mostly restored in Kivalina after an earlier storm damaged a powerline and prompted residents to shelter at a school.
New Mexico requested a federal emergency declaration on October 24, 2026, after record San Juan River flooding prompted hundreds of water rescues and affected communities around Farmington and Bloomfield. The request covered four counties and five Tribal nations, seeking assistance for debris removal and emergency protective measures. The San Juan River at Farmington reached 4.3 m (14.1 feet) on October 23, breaking its previous record of 3.75 m (12.3 feet) set in September 1909. The gauge subsequently stopped operating, leaving the final crest unconfirmed. Hundreds of water rescues were reported between Farmington and Bloomfield as flooding affected nearby communities.
Coastal Flood Warnings remain in effect for Hatteras and Ocracoke islands on October 21 as a nor’easter continues offshore of the U.S. Mid-Atlantic coast. The National Weather Service forecasts 0.6–1.2 m (2–4 feet) of inundation in vulnerable shoreline areas, while N.C. Highway 12 remains closed between the Marc Basnight Bridge and Rodanthe.
Heavy rain and severe thunderstorms are forecast across the U.S. Southwest from October 21 into October 23, 2026, as a deep Pacific low draws tropical moisture inland. The Weather Prediction Center (WPC) placed parts of Southern California and the Southwest under a Slight Risk of excessive rainfall for October 21, while the Storm Prediction Center (SPC) placed parts of central and eastern Arizona under a separate Slight Risk of severe thunderstorms.
DANA Adam brought torrential rain and severe flooding to eastern Spain from October 17 to 19, 2026, prompting restrictions across 145 municipalities in Valencia and Alicante. Emergency services carried out more than 1 000 rescues on October 19, while four deaths were reported during the wider storm episode and AEMET said Pego received 632 mm (24.9 inches) of rain in 36 hours.
Dare County ordered all visitors to evacuate Hatteras Island beginning at 20:00 EDT on October 16 (00:00 UTC on October 17) after declaring a state of emergency ahead of a developing coastal nor’easter. A Coastal Flood Warning is valid from 17:00 EDT (21:00 UTC) on October 17 to 08:00 EDT (12:00 UTC) on October 20, with 0.6–1.2 m (2–4 feet) of inundation above ground level and 2.4–4.3 m (8–14 feet) breaking surf forecast in vulnerable areas.
The Storm Prediction Center (SPC) issued a Slight Risk of severe thunderstorms for parts of the Florida Panhandle, southeastern Alabama, and southwestern Georgia on October 9, 2026, as rainbands from Hurricane Isaias were forecast to bring a tornado threat from the afternoon into the overnight hours. At 09:00 UTC, the National Hurricane Center (NHC) said Isaias had strengthened to 175 km/h (110 mph), with a minimum central pressure of 963 hPa, ahead of an expected northern Gulf Coast landfall Friday night or early Saturday.
Hurricane, storm surge and tropical storm watches were issued for portions of the U.S. northern Gulf Coast on Wednesday morning, October 7, 2026, as Tropical Storm Isaias strengthened over the Gulf of America, according to the National Hurricane Center (NHC). The watches extend from the mouth of the Mississippi River eastward to Yankeetown, Florida.
Heavy rain is forecast across the Four Corners region through 05:00 PT (12:00 UTC) on September 30, with 50–100 mm (2–4 inches) expected across much of eastern Arizona, western New Mexico, and the San Juan Mountains of southwestern Colorado. Moderate Risk excessive-rainfall outlooks, level 3 of 4, cover much of Arizona and New Mexico and parts of southern Utah and southern Colorado, corresponding to a ≥40% probability of flash flooding.
