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- HabitabilityHabitability is the adequacy of an environment for human living. Where housing is concerne
- HaboobType of intense dust storm
- Hadal zoneDeepest region of the ocean lying within oceanic trenches
- HadCRUTGlobal Temperature Record
- HadeanGeologic eon, 4567–4031 million years ago
- Hadley cellTropical atmospheric circulation feature
- HailForm of solid precipitation
- Hair iceHairlike ice that forms on dead wood
- Hakatai ShaleMesoproterozoic rock formation
- Half-grabenGeological structure bounded by a fault along one side of its boundaries
- Halide mineralMinerals with a dominant fluoride, chloride, bromide, or iodide anion
- Halifax Town HallHalifax Town Hall is a grade II* listed, 19th century town hall in the town of Halifax, We
- HaliteMineral known as rock salt
- Halo (optical phenomenon)Optical phenomenon of the sky
- HaloclineStratification of a body of water due to salinity differences
- Hampshire BasinGeological basin in England
- Hand fanDevice used to cool oneself
- Handbook of TexasThe Handbook of Texas is an encyclopedia of geography, history, and historical persons of
- Hans Joachim SchellnhuberGerman atmospheric physicist and climatologist
- Hans von StorchHans von Storch (born 13 August 1949) is a German climate scientist. He is a professor at
- HanstholmHanstholm is a small town and a former island, now elevated area in Thisted municipality o
- Hanukkah Eve windstorm of 2006Weather event in the Pacific Northwest
- Hardness comparisonStandard hardness conversion table
- HarmattanWest African dry weather season
- Harmful algal bloomPopulation explosion of organisms that can kill marine life
- Harold JeffreysBritish physicist and mathematician
- Harris Fire2007 wildfire in Southern California
- Harry Hammond HessAmerican geologist (1906–1969)
- Hartland Institute38°20′00″N 78°05′57″W / 38.3333°N 78.0992°W
- Hatlestad SlideMudslide in Bergen, Norway
- HausmanniteMixed oxide mineral of manganese II and III: Mn3O4
- HauyneRare feldspathoid mineral in the sodalite group
- Hawaii hotspotVolcanic hotspot near the Hawaiian Islands, in the Pacific Ocean
- Hawaii National GuardThe Hawaii National Guard consists of the Hawaii Army National Guard and the Hawaii Air Na
- Hawaiian eruptionEffusive volcanic eruption
- Hawaiian TroughMoat-like depression of the seafloor surrounding the Hawaiian Islands
- Hawkins BankHawkins Bank is a large submerged bank off the Mascarene Plateau. It is considered a depen
- Hawthorn GroupStratigraphic unit of Miocene age in South Carolina, Georgia, and Florida
- Hayden Geological Survey of 1871The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that late
- Hayward Fault ZoneGeological fault in the San Francisco Bay Area
- HazeDry particulates obscuring clarity of the sky
- HD 181720 bHD 181720 b is an extrasolar planet which orbits the G-type main sequence star HD 181720,
- HeadlandLandform extending into a body of water, often with significant height and drop
- Headward erosionGeographical process
- Health and environmental effects of battery electric carsEnvironmental effects of battery electric cars
- Health and environmental effects of transportThe health and environmental impact of transport is significant because transport burns mo
- Health and environmental impact of the coal industryThe health and environmental impact of the coal industry includes issues such as land use,
- Health effects of coal ashCoal ash, also known as coal combustion residuals (CCRs), is the mineral residue that rema
- Health in IndonesiaHealth in Indonesia is affected by a number of factors. Indonesia has over 26,000 health c
- Hearne CratonCraton in northern Canada
- Heartland InstituteConservative and libertarian American think tank
- Heat advisoryA heat advisory is a notice issued by the National Weather Service of the United States. L
- Heat burstSudden increase in atmospheric temperature
- Heat indexTemperature index that accounts for the effects of humidity
- Heat meterMeasuring device for thermal energy
- Heat sinkPassive heat exchanger that transfers heat
- Heat waveProlonged period of excessively hot weather
- Heat wave of 1995 derecho seriesWeather event
- Heat wave of 2006 derecho seriesSeries of weather events in Southern Ontario and the United States
- HeathShrubland habitat
- Heating degree daySum of temperature values
- Heavy industryType of industry
- Hebert BoxAtlantic hurricane prediction region
- Hebridean terranePart of the Caledonian orogenic belt in northwest Scotland
- Hector (cloud)Regularly recurring thundercloud
- HectoritePhyllosilicate mineral in the smectite group
- HedenbergiteIron-rich pyroxene mineral
- Heidi CullenAmerican climatologist
- HeiligenscheinOptical phenomenon
- Heinrich eventLarge groups of icebergs traversing the North Atlantic
- HelcionellidHelcionellid or Helcionelliformes is an order of small fossil shells that are universally
- HelcionelloidaHelcionelloida is an extinct group of ancient molluscs (phylum Mollusca). These are the ol
- Held v. Montana2023 U.S. State Constitutional court case
- HeliophysicsScience of the heliosphere
- Hellenic arcMountain chain located on the southern margin of the Aegean Sea plate
- Hellenic subduction zoneConvergent boundary between the African and Aegean Sea plates
- Hellenic TrenchLong narrow depression bordering the Aegean Sea to the south
- HematiteCommon iron oxide mineral
- HemimorphiteSilicate mineral
- Hemipelagic sedimentHemipelagic sediment, or hemipelagite, is a type of marine sediment that consists of clay
- HemoglycinSpace polymer claimed to be of extraterrestrial origin
- HemolithinProtein claimed to be of extraterrestrial origin
- Henry Barnard KümmelHenry Barnard Kümmel (1867 - October 23, 1945) was a State Geologist for the State of New
- Henry StommelHenry Melson Stommel (September 27, 1920 – January 17, 1992) was a major contributor to th
- Henry Stommel Research AwardOcean physics award by the American Meteorological Society
- Henry William MenardAmerican geologist (1920–1986)
- Herder–farmer conflicts in NigeriaLand resource disputes in across Nigeria
- HerdorfHerdorf (German pronunciation: ) is a town in the district of Altenkirchen, in Rhineland-P
- Hermann–Mauguin notationNotation to represent symmetry in point groups, plane groups and space groups
- Hertfordshire puddingstoneHertfordshire puddingstone is a conglomerate sedimentary rock composed of rounded flint pe
- HexagonariaHexagonaria is a genus of colonial rugose coral. Fossils are found in rock formations dati
- High pressure metamorphic terranes along the Bangong-Nujiang Suture ZoneGeological features
- High water markHighest level of a body of water
- High-nutrient, low-chlorophyll regionsHigh-nutrient, low-chlorophyll (HNLC) regions are regions of the ocean where the abundance
- High-occupancy toll laneA high-occupancy toll lane (HOT lane) is a type of traffic lane or roadway that is availab
- High-performance buildingsBuildings which are better for the environment that regulations require
- High-pressure areaRegion with higher atmospheric pressure
- HighlandArea of high elevation such as a mountainous region or elevated mountainous plateau
- Highland Boundary FaultGeological fault zone crossing Scotland
- Highlands controversy of Northwest Scotland19th-century geological controversy
- Highlands of IcelandGeographical area of Iceland
- Highway H33 (Ukraine)H33 is a Ukrainian national highway (H-highway), passing through the territory of the Odes
- Hikurangi PlateauThe Hikurangi Plateau is an oceanic plateau in the South Pacific Ocean east of the North I
- Hilary CharlesworthHilary Christiane Mary Charlesworth AM FASSA FAAL (born 28 February 1955) is an Australian
- Hilina SlumpSubsided section of the Big Island of Hawaii
- HillLandform that extends above the surrounding terrain
- Hillslope evolutionHillslope evolution is the changes in the erosion rates, erosion styles and form of slopes
- Himawari 8Himawari 8 (ひまわり8号) is a Japanese weather satellite, the 8th of the Himawari geostationary
- Hinds County, MississippiCounty in Mississippi, United States
- Hirnantian glaciationGlaciation 460 million to 430 million years ago
- Hiroo KanamoriJapanese seismologist
- Historical geologyStudy of the geological history of Earth
- History of Atlantic hurricane warningsAspect of meteorological history
- History of coal miningThe history of coal mining goes back thousands of years, with early mines documented in an
- History of EarthRecords of Earth's development
- History of geodesyThe history of geodesy (/dʒiːˈɒdɪsi/) began during antiquity and ultimately blossomed duri
- History of ice drillingHistory of drilling through ice sheets and glaciers
- History of numerical weather predictionAspect of meteorological history
- History of oil in California through 1930The history of oil production in California began in the late 19th century. In 1903, Calif
- History of soil scienceThe early concepts of soil were based on ideas developed by a German chemist, Justus von L
- History of surface weather analysisThe history of surface weather analysis concerns the timetable of developments related to
- History of the Burgess ShaleThe Burgess Shale, a series of fossil beds in the Canadian Rockies, was first noticed in 1
- History of the North SeaThe North Sea has an extensive history of maritime commerce, resource extraction, and warf
- History of tornado researchThe history of tornado research spans back centuries, with the earliest documented tornado
- History of tropical cyclone namingThe practice of using names to identify tropical cyclones goes back several centuries, wit
- Ho-Kwang MaoChinese-American geologist
- Hoba meteoriteLargest known intact meteorite
- Hobe Sound, FloridaHobe Sound is an unincorporated area and census-designated place (CDP) in Martin County, F
- Hockey stick graphType of graph with a sharp turn
- Hockey stick graph (global temperature)Graph in climate science
- Hockley, TexasHockley is an unincorporated community located in Harris County, Texas, United States, on
- Holliday, TexasHolliday is a city in Archer County, Texas, United States. It is part of the Wichita Falls
- HoloceneCurrent geological epoch
- Holocene extinctionOngoing extinction event caused by human activity
- HoloplanktonOrganisms planktic for their entire life
- HomerianIn the geologic timescale, the Homerian is an age of the Wenlock Epoch of the Silurian Per
- Homewood, KansasHomewood (formerly Forest Home) is a unincorporated community in Homewood Township, Frankl
- Hong Kong ObservatoryHong Kong meteorological agency
- Hong Kong tropical cyclone warning signalsWeather alerts in Hong Kong
- Hongze LakeHongze Lake, previously known as Lake Hungtze or Hung-tse, is the fifth-largest freshwater
- Hoodoo (geology)Tall, thin spire of relatively soft rock usually topped by harder rock
- Hook echoWeather radar signature indicating tornadic circulation in a supercell thunderstorm
- Hopedale, Newfoundland and LabradorHopedale (Inuit language: Agvituk) is a town located in the north of Labrador, the mainlan
- Hopton Wood StoneType of limestone
- Horizon (geology)Bedding surface, or distinctive layer or thin bed
- Horizontal position representationA position representation is a set of parameters used to express a position relative to a
- Horn of Africa drought (2020–2023)Natural disaster
- HornblendeComplex inosilicate series of minerals
- HornfelsGroup of metamorphic rocks
- Horror vacui (philosophy)Concept in philosophy and early physics
- Horst (geology)Raised fault block bounded by normal faults
- Hot springSpring produced by the emergence of geothermally heated groundwater
- Hot springs in TaiwanTaiwan is part of the collision zone between the Yangtze Plate and Philippine Sea Plate. E
- Hot towerType of tropical cumulonimbus cloud
- Hotspot (geology)Volcanic region hotter than the surrounding mantle
- Hottah (Mars)Hottah is a rock outcrop on the surface of Aeolis Palus, between Peace Vallis and Aeolis M
- House RangeThe House Range is a north-south trending mountain range in Millard County, of west-centra
- Howard BluesteinAmerican research meteorologist
- Hoxnian StageThe Hoxnian Stage was a middle Pleistocene stage of the geological history of the British
- Huab FormationGeologic formation in Africa
- Huangling AnticlineGroup of rock units in the Yangtze Block, South China
- HübneriteOxide mineral
- Hudson ValleyRegion in the US state of New York
- Hudspeth FormationThe Hudspeth Formation is a Cretaceous sedimentary rock formation, found in Oregon of the
- Hugo BenioffAmerican seismologist
- Hugo DummettHugo T. Dummett (1940–2002) was a South African mineral-exploration geologist who is best
- Human impact on the environmentImpact of human life on Earth and environment
- Human impact on the nitrogen cycleEnvironmental impact of agricultural and industrial nitrogen
- Human rights and climate changeHuman rights and climate change is a conceptual and legal framework under which internatio
- Human–wildlife conflictNegative interactions between people and wild animals
- Humanitarian crisisLarge threat to the health and safety of many people
- Humanitarian response to Typhoon HaiyanIn the wake of Typhoon Haiyan, the Philippines received numerous messages of condolence an
- HumanoidEntity with human form or characteristics
- Humid continental climateCategory in the Köppen climate classification system
- Humid subtropical climateTransitional climatic zone
- HumidexIndex number to describe the feeling of heat in Canada
- HumidityConcentration of water vapour in the air
- Humidity indicator cardCard on which a moisture-sensitive chemical is impregnated
- HuminClass of soil organic compounds insoluble in water at high pH
- HummockSmall knoll or mound above ground
- Hummocky cross-stratificationSedimentary structure found in sandstones
- HummusMiddle Eastern chickpea puree dish
- HumusOrganic matter in soils resulting from decay of plant and animal materials
- Humus formArrangement of organic and mineral layers in soil
- Hunger stoneType of landmark
- HunsrückThe Hunsrück (German pronunciation: ) is a long, triangular, pronounced upland in Rhinelan
- Hunsrück SlateGeological formation in Germany
- Hunter Valley Coal ChainThe Hunter Valley Coal Chain (HVCC) is the chain of coal delivery in New South Wales, Aust
- Hunter–Bowen orogenyThe Hunter–Bowen orogeny was a significant arc accretion event in the Permian and Triassic
- Hunton MegagroupLarge carbonate geologic unit in midwestern USA
- HURCONHurricane alert scale
- HURDATDatabases with info about Atlantic and East Pacific hurricanes
- Huronian glaciationSevere glaciation during the Paleoproterozoic era
- Hurricane Abby (1968)Hurricane Abby made landfall in Cuba, Florida, and North Carolina in June 1968. The first
- Hurricane Adrian (2005)Category 1 Pacific hurricane in 2005
- Hurricane AgnesCategory 1 Atlantic hurricane in 1972
- Hurricane Alex (2010)Category 2 Atlantic hurricane
- Hurricane AliciaCategory 3 Atlantic hurricane in 1983
- Hurricane AllenCategory 5 Atlantic hurricane in 1980
- Hurricane AndrewCategory 5 Atlantic hurricane in 1992
- Hurricane AnitaCategory 5 Atlantic and Pacific hurricane in 1977
- Hurricane Anna (1961)Hurricane Anna impacted Central America and the Windward Islands in July 1961. The first t
- Hurricane AudreyCategory 3 Atlantic hurricane in 1957
- Hurricane Barry (1983)Hurricane Barry was a moderate tropical cyclone that caused minor damage in Florida, Texas
- Hurricane BelleCategory 3 Atlantic hurricane in 1976
- Hurricane BerylCategory 5 Atlantic hurricane in 2024
- Hurricane BetsyCategory 4 Atlantic hurricane in 1965
- Hurricane BeulahCategory 5 Atlantic hurricane in 1967
- Hurricane BobCategory 3 Atlantic hurricane in 1991
- Hurricane Bonnie (1998)Category 3 Atlantic hurricane
- Hurricane Brenda (1973)Category 1 Atlantic hurricane in 1973
- Hurricane Calvin (1993)Category 2 Pacific hurricane in 1993
- Hurricane CamilleCategory 5 Atlantic hurricane in 1969
- Hurricane CarlaCategory 4 Atlantic hurricane in 1961
- Hurricane CarmenCategory 4 Atlantic hurricane in 1974
- Hurricane CarolCategory 3 Atlantic hurricane in 1954
- Hurricane CarrieCategory 4 Atlantic hurricane in 1957
- Hurricane CatarinaCategory 2 South Atlantic hurricane in 2004
- Hurricane CeliaCategory 4 Atlantic hurricane in 1970
- Hurricane Cesar–DouglasCategory 4 Atlantic and Pacific hurricane in 1996
- Hurricane CharleyCategory 4 Atlantic hurricane in 2004
- Hurricane Daisy (1962)Hurricane Daisy brought the worst flooding to New England since Hurricane Diane in 1955. T
- Hurricane DavidCategory 5 Atlantic hurricane in 1979
- Hurricane DeanCategory 5 Atlantic hurricane in 2007
- Hurricane Dean (1989)Hurricane Dean was a strong tropical cyclone that affected the United States and Atlantic
- Hurricane DennisCategory 4 Atlantic hurricane in 2005
- Hurricane DianeCategory 2 Atlantic hurricane in 1955
- Hurricane DorianCategory 5 Atlantic hurricane in 2019
- Hurricane Dot (1959)Hurricane Dot was a powerful hurricane which affected Hawaii in August 1959, making it, at
- Hurricane Ella (1958)Hurricane Ella brought flooding to the Greater Antilles and Texas in September 1958. The f
- Hurricane EloiseCategory 3 Atlantic hurricane in 1975
- Hurricane Emily (1987)Hurricane Emily was a powerful tropical cyclone that struck Hispaniola in September 1987.
- Hurricane Erin (2025)Category 5 Atlantic hurricane in 2025
- Hurricane FifiCategory 2 Atlantic hurricane in 1974
- Hurricane FloraCategory 4 Atlantic hurricane in 1963
- Hurricane FlorenceCategory 4 Atlantic hurricane in 2018
- Hurricane Flossy (1956)Hurricane Flossy originated from a tropical disturbance in the eastern Pacific Ocean and m
- Hurricane FloydCategory 4 Atlantic hurricane in 1999
- Hurricane Gabrielle (1989)Hurricane Gabrielle was a powerful tropical cyclone that caused nine fatalities in the Uni
- Hurricane Genevieve (2014)Hurricane Genevieve, also referred to as Typhoon Genevieve, was the first tropical cyclone
- Hurricane GeorgesCategory 4 Atlantic hurricane in 1998
- Hurricane GilbertCategory 5 Atlantic hurricane in 1988
- Hurricane GonzaloHurricane Gonzalo was the second tropical cyclone, after Hurricane Fay, to directly strike
- Hurricane GordonCategory 1 Atlantic hurricane in 1994
- Hurricane Greta–OliviaHurricane Greta, later Hurricane Olivia, was one of fourteen named Atlantic hurricanes to
- Hurricane GustavCategory 4 Atlantic hurricane in 2008
- Hurricane HarveyCategory 4 Atlantic hurricane in 2017
- Hurricane HazelCategory 4 Atlantic hurricane in 1954
- Hurricane HeleneCategory 4 Atlantic hurricane in 2024
- Hurricane HugoCategory 5 Atlantic hurricane in 1989
- Hurricane huntersAircrews that fly into tropical cyclones to gather weather data
- Hurricane IanCategory 5 Atlantic hurricane in 2022
- Hurricane IdaCategory 4 Atlantic hurricane in 2021
- Hurricane IkeCategory 4 Atlantic hurricane in 2008
- Hurricane InezCategory 5 Atlantic hurricane in 1966
- Hurricane InikiCategory 4 Pacific hurricane in 1992
- Hurricane IokeCategory 5 Pacific hurricane and typhoon in 2006
- Hurricane IotaCategory 4 Atlantic hurricane in 2020
- Hurricane IreneCategory 3 Atlantic hurricane in 2011
- Hurricane Irene–OliviaHurricane Irene–Olivia was the first actively tracked tropical cyclone to move into the ea
- Hurricane IrmaCategory 5 Atlantic hurricane in 2017
- Hurricane Isaac (2012)Category 1 Atlantic hurricane in 2012
- Hurricane IvanCategory 5 Atlantic hurricane in 2004
- Hurricane JanetCategory 5 Atlantic hurricane in 1955
- Hurricane JeanneCategory 3 Atlantic hurricane in 2004
- Hurricane Joan–MiriamCategory 4 Atlantic and Pacific hurricane in 1988
- Hurricane KarlCategory 3 Atlantic hurricane in 2010
- Hurricane LauraCategory 4 Atlantic hurricane in 2020
- Hurricane Lily (1971)Hurricane Lily was a short-lived Category 1 hurricane of August 1971 that devastated the c
- Hurricane Linda (1997)Category 5 Pacific hurricane
- Hurricane LizaCategory 4 Pacific hurricane in 1976
- Hurricane ManuelCategory 1 Pacific hurricane in 2013
- Hurricane MatthewCategory 5 Atlantic hurricane in 2016
- Hurricane MelissaCategory 5 Atlantic hurricane in 2025
- Hurricane MichaelCategory 5 Atlantic hurricane in 2018
- Hurricane Mills, TennesseeHurricane Mills is an unincorporated community in Humphreys County, Tennessee, United Stat
- Hurricane MiltonCategory 5 Atlantic hurricane in 2024
- Hurricane MitchCategory 5 Atlantic hurricane in 1998
- Hurricane NadineHurricane Nadine was an erratic Category 1 hurricane that became the fourth-longest-lived
- Hurricane Norman (1978)Hurricane Norman was a rare tropical cyclone that impacted California in early September 1
- Hurricane OpalCategory 4 Atlantic hurricane in 1995
- Hurricane OtisCategory 5 Pacific hurricane in 2023
- Hurricane PatriciaCategory 5 Pacific hurricane in 2015
- Hurricane PaulCategory 2 Pacific hurricane in 1982
- Hurricane PaulineCategory 4 Pacific hurricane in 1997
- Hurricane RitaCategory 5 Atlantic hurricane in 2005
- Hurricane SandyCategory 3 Atlantic hurricane in 2012
- Hurricane TaraCategory 1 Pacific hurricane in 1961
- Hurricane UlekiHurricane Uleki, also referred as Typhoon Uleki, was a long-lived tropical cyclone in Augu
- Hurricane WilmaCategory 5 Atlantic hurricane in 2005
- Hutchinson Island (Florida)Hutchinson Island consists of two barrier islands on the coast of Martin, St. Lucie, and I
- HyaloclastiteHyaloclastite is a volcanoclastic accumulation or breccia consisting of glass (from the Gr
- Hydraulic actionForce of water and tapped air pockets against a rock surface
- Hydraulic conductivityAbility of water to flow through a porous material
- Hydric soilHydric soil is soil which is permanently or seasonally saturated by water, resulting in an
- Hydrocarbon explorationAttempts to locate oil and gas
- HydrocycleA hydrocycle is a bicycle-like watercraft. The concept was known in the 1870s as a water v
- Hydrogen cycleHydrogen exchange between the living and non-living world
- Hydrogen productionIndustrial production of molecular hydrogen
- Hydrogen-powered shipShip fueled by hydrogen
- HydrogeologyStudy of groundwater's movement and distribution
- HydrogeophysicsCross-discipline of geophysics and hydrology
- HydrographyMeasurement of bodies of water
- HydrologyScience of the movement, distribution, and quality of water on Earth
- HydrometeorologyBranch of meteorology and hydrology
- HydrophoneUnderwater microphone
- Hydropunctaria mauraHydropunctaria maura, still often called by the older name Verrucaria maura and commonly k
- HydrosphereLiquid water on a planet
- Hydrothermal circulationCirculation of water driven by heat exchange
- Hydrothermal ventFissure in a planet's surface from which heated water emits
- HydroxyapatiteNaturally occurring mineral form of calcium apatite
- HygrometerInstrument for measuring humidity
- Hyllestad (village)Hyllestad is the administrative centre of Hyllestad Municipality in Vestland county, Norwa
- Hypersaline lakeLandlocked body of water that contains concentrations of salts greater than the sea
- HypocenterOrigin point beneath an air explosion
