312 articles
Great Frost of 1709
The Great Frost of 1709, known in France as Le grand hiver, was an extraordinarily cold European winter, the coldest on the continent in 500 years.
Great storm of 1703
The Great storm of 1703 was a violently destructive cyclone that struck southern England and northern France in late November 1703, killing an estimated 8,000 to 15,000 people.
Great storm of 1987
The Great Storm of 1987 was an extratropical cyclone that struck southern Britain and northern France on 15–16 October 1987, felling about 15 million trees.
Greenfield tornado
The Greenfield tornado was a violent EF4 tornado that struck Greenfield, Iowa, on May 21, 2024, killing five people, injuring at least 35, and destroying more than 100 homes.
Greensburg tornado
The Greensburg tornado was a violent EF5 tornado that struck Greensburg, Kansas, on May 4, 2007, destroying about 95 percent of the town and killing 11 people.
Haboob
A haboob (Arabic habūb) is a wall of dust or sand pushed by thunderstorm outflow winds that can cut visibility to zero; the term began in Sudan and now covers similar storms worldwide, especially in Arizona.
Hail
Hail is precipitation in the form of ice pellets more than 5 mm across that falls from thunderstorms, causing about $10 billion a year in US damage.
Hanukkah Eve windstorm of 2006
The Hanukkah Eve windstorm of 2006 was a powerful windstorm that struck western Oregon, Washington, and British Columbia in December 2006, leaving 1.5 million customers without power.
Hawk Fire
The Hawk Fire was a wind-driven wildfire that burned on Peavine Peak northwest of Reno, Nevada, in August 2026, destroying 47 homes and prompting evacuations of roughly 90,000 people.
History of tornado research
History of tornado research is the development of tornado science from the first statistics in the 1880s to the 1948 Tinker forecast, radar detection, the Fujita scale, and VORTEX.
Hong Kong tropical cyclone warning signals
The Hong Kong tropical cyclone warning signals, known as typhoon signals, are numbered warnings from the Hong Kong Observatory using signals 1, 3, 8, 9, and 10.
Hook echo
A hook echo is a hook-shaped region of radar reflectivity in supercell thunderstorms, formed when precipitation wraps around the rotating mesocyclone, and a key indicator in tornado warning decisions.
Hurricane evacuation
A hurricane evacuation is the organized movement of people out of areas threatened by an approaching tropical cyclone, ordered by local officials and carried out mainly by private vehicle.
Hurricane Milton tornado outbreak
The Hurricane Milton tornado outbreak was a prolific series of 45 tornadoes across Florida on October 9, 2024, including three EF-3 tornadoes and five deaths near Fort Pierce.
Hurricane shutter
A hurricane shutter, also called a storm shutter, is a protective covering over windows and doors that blocks windborne debris during hurricanes and similar windstorms.
Ice storm
An ice storm, also called a silver thaw, is a period of freezing rain that coats trees and power lines with glaze ice, causing widespread outages.
Impact-based warnings
Impact-based warnings describe the expected consequences of weather events and the actions people should take, rather than stating only hazard characteristics such as wind speed or rainfall depth.
January 1985 North American cold wave
The January 1985 North American cold wave brought record low temperatures to the Southeastern United States from January 19 to 22, 1985, destroying most of Florida's citrus crop.
January 1998 North American ice storm
The January 1998 North American ice storm, or Great Ice Storm of 1998, coated eastern Ontario and southern Quebec in ice from January 4 to 10, 1998.
January 2016 United States blizzard
The January 2016 United States blizzard, informally Winter Storm Jonas, was a nor'easter that dropped 2 to 3 feet of snow on the Mid-Atlantic, January 22 to 24, 2016.
January 2018 North American blizzard
The January 2018 North American blizzard, or Winter Storm Grayson, was a bomb cyclone that brought blizzard conditions and record coastal flooding to the East Coast.
January 2025 Southern California wildfires
The January 2025 Southern California wildfires were wind-driven fires begun January 7 during strong Santa Ana winds; the Palisades and Eaton Fires destroyed over 16,000 structures.
January 23–27, 2026 North American winter storm
The January 23–27, 2026 North American winter storm, called Winter Storm Fern, brought heavy snow and ice across the United States, killing at least 70 people.
January 30 – February 2, 2026 nor'easter
The January 30 – February 2, 2026 nor'easter, also known as Winter Storm Gianna, was a bomb cyclone that brought record snowfall to the Carolinas.
January–February 2026 North American cold wave
The January–February 2026 North American cold wave pushed Arctic air across the United States from January 22, with Winter Storm Fern leaving over 470,000 without power and dozens dead.
Jarrell tornado
The Jarrell tornado was an F5 tornado that struck Jarrell, Texas, and its Double Creek Estates subdivision on May 27, 1997, killing 27 people and producing extreme damage.
July 2025 Central Texas floods
The July 2025 Central Texas floods, also called the Kerr County floods, killed at least 135 people along the Guadalupe River on July 4, 2025.
June 2012 North American derecho
The June 2012 North American derecho was a severe thunderstorm complex that on June 29, 2012 swept 1,000 km from the Midwest to the Mid-Atlantic, killing 13.
List of Australian tornadoes
Australia records about 50 tornadoes per year, most in remote areas, including an F4 at Bucca, Queensland, in 1992 and a deadly 1918 tornado in Melbourne.
List of Brazil tornadoes
Brazil experiences tornadoes mainly in its southern and southeastern states; tornadoes have been recorded since 1807, and the August 1959 outbreak was the deadliest in South America.