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Tropical Cyclones

All articles tagged with #tropical cyclones

Three Pacific Hurricanes Roil Between Hawaii and North America
weather1 day ago

Three Pacific Hurricanes Roil Between Hawaii and North America

A rare trio of eastern Pacific hurricanes—Lowell, Karina and Marie—are churning between Hawaii and the western U.S. Two have become major hurricanes, Lowell briefly intensified to Category 5 before easing to about 145 mph, Karina remains a major hurricane as it drifts northwest, and Marie stays offshore but could contribute moisture to the U.S. West Coast; scientists note it’s the first time Category 4 and 5 storms were present simultaneously in the eastern Pacific.

Dolly forms as tropical storm on a slow Caribbean-bound track
weather8 days ago

Dolly forms as tropical storm on a slow Caribbean-bound track

Tropical Storm Dolly has formed on a slow path toward the Caribbean and is not expected to strengthen into a hurricane, though its rainfall could affect the Virgin Islands, Leeward Islands and Puerto Rico. The name Dolly is a coincidence with the late Dolly Parton, and the article notes that NOAA forecasts 8–14 tropical storms this season, with 3–6 potentially becoming major hurricanes.

Tropics Roar to Life: Nine Storms Under Watch Across Atlantic and Pacific
weather11 days ago

Tropics Roar to Life: Nine Storms Under Watch Across Atlantic and Pacific

Forecasters are tracking nine storms/potential systems—seven in the Pacific and two in the Atlantic—as hurricane season intensifies. In Hawaii, Moke weakened to a tropical depression offshore, bringing heavy rain and gusts; Lala remains a tropical storm after 12 days; Iselle formed and could briefly reach hurricane strength before dissipating. Four additional Pacific disturbances are being watched, including one with a 70% seven‑day development chance and another with a 30% chance. In the Atlantic, a system southeast of Bermuda has about a 50% chance of forming within 48 hours to seven days, and a tropical wave off Africa may also develop as it moves westward. El Niño is complicating formation in the Atlantic, but tropical development remains possible.

Lala’s blow to Hawaii hints at a busier Pacific storm season ahead
weather17 days ago

Lala’s blow to Hawaii hints at a busier Pacific storm season ahead

Hawaii endured Lala, a rare hurricane that dumped two to three feet of rain on parts of the Big Island and damaged homes, bridges, and schools, with no reported loss of life. Now weakened to a tropical storm, Lala could be a warning of several more impactful Pacific storms through August, as ocean waters remain exceptionally warm due to El Niño, marine heat waves, and climate change, with potential activity near Guam and the Northern Mariana Islands and moisture reaching California, signaling a marathon of the eastern and central Pacific hurricane season.

science29 days ago

AI-Driven WeatherNext Cyclones Elevates Tropical Cyclone Forecasts via Massive Ensembles

Nature reports WeatherNext Cyclones (WN-C), an AI-powered operational weather model that generates state-of-the-art ensemble forecasts for the track, intensity, and size of tropical cyclones worldwide. Trained on global analysis data and historical cyclones, WN-C produces ensembles up to 1,000 members up to 15 days ahead, delivering about a day or more of lead time improvement over leading models. The system shows that high-resolution input is not strictly required for strong intensity forecasts, and that including WN-C in a weighted ensemble improves overall skill, marking a step-change toward more reliable and timely forecasts and warnings.

El Niño Tames the Atlantic, Yet Peak Hurricane Season Remains a Threat
weather1 month ago

El Niño Tames the Atlantic, Yet Peak Hurricane Season Remains a Threat

A Washington Post meteorologist explains that the Atlantic has been unusually quiet this hurricane season thanks to El Niño-driven upper-level winds and Saharan dust, making it one of the tamest seasons on record. But the season is long, and storms can still form, especially away from El Niño’s strongest winds, so vigilance remains essential as the peak approaches.

Southbound rain surge looms as tropical disturbance nears storm threshold
weather2 months ago

Southbound rain surge looms as tropical disturbance nears storm threshold

A waterlogged tropical disturbance near Texas has a 60% chance of developing into a tropical storm and could dump heavy rain from eastern Texas to the Carolinas. Flood watches are in effect from Texas to Mississippi as severe thunderstorms move along the Gulf Coast; forecasters warn copious moisture could drench a wide area from Houston to Atlanta and into Louisiana, Mississippi and Alabama with significant impacts possible depending on storm development.

Peak Atlantic Hurricane Season: Expectations and Uncertainty
weather1 year ago

Peak Atlantic Hurricane Season: Expectations and Uncertainty

The Atlantic hurricane season is at its peak around September 10, with activity expected to increase in the coming weeks despite current quiet conditions. Forecasters predict a rise in tropical cyclone development later in September and October due to favorable environmental factors, with NOAA forecasting above-normal activity and an increase in named storms, hurricanes, and major hurricanes. Historically, late September and early October are among the most active periods for hurricanes, especially in the Caribbean and Gulf regions.

Experts Warn of Record-Breaking 2024 Atlantic Hurricane Season
weather2 years ago

Experts Warn of Record-Breaking 2024 Atlantic Hurricane Season

Colorado State University experts predict that the 2024 Atlantic hurricane season will be extremely active, with 23 named storms, 11 hurricanes, and 5 major hurricanes expected due to an impending La Niña. The warm Atlantic and weakening El Niño are contributing to the forecast, with a 62% chance of a major hurricane making landfall along the U.S. coastline. The National Hurricane Center plans to introduce an experimental forecast cone and more Spanish-language products for the upcoming season, which officially begins on June 1.

"Tropical Cyclones: Unlikely Allies Against Ocean Hypoxia"
environment2 years ago

"Tropical Cyclones: Unlikely Allies Against Ocean Hypoxia"

New research suggests that tropical cyclones have a net positive impact on ocean oxygenation and primary productivity in the East China Sea, countering issues of deoxygenation and hypoxia caused by human activities. The study found that tropical cyclones lead to increased oxygen levels and enhanced marine trophic webs, despite their devastating consequences on land. As climate change continues, the frequency of these events is likely to increase, presenting a paradoxical situation where tropical cyclones, while destructive on land, may benefit the marine realm.

"2024 Hurricane Season: Forecasting Tropical Threats"
weather2 years ago

"2024 Hurricane Season: Forecasting Tropical Threats"

The 2024 hurricane season in the Atlantic basin is approaching, and forecasters are closely monitoring the El Niño-Southern Oscillation (ENSO) climate pattern to predict tropical cyclone activity. Early indications suggest a neutral or La Niña status for the upcoming season, potentially leading to more active hurricane activity. The National Hurricane Center plans to introduce changes, including experimental forecast cones and more frequent adjustments to watches and warnings. However, experts caution against preseason hype, emphasizing the unpredictability of hurricane activity and the limitations of long-term forecasts. The official list of names for the 2024 tropical cyclone season has been released, with retired names replaced by new ones.