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The Colares Flap and Operação Prato
1977 · Colares, Bay of Marajó, Pará
UAP · Orb / light · 72 sources · 12 photos
72Well documented
The 1973 UFO Flap: The Autumn of Aliens
c. 1973 · Southern and Midwestern United States (Mississippi, Louisiana, Alabama, Georgia, Tennessee, Ohio, Indiana)
UAP · Other · 37 sources
69Well documented
The 2024 Drone Wave: New Jersey, Langley AFB and RAF Lakenheath
November 13, 2024 · New Jersey and the US Northeast, with Joint Base Langley-Eustis, Virginia (Dec 2023) and RAF Lakenheath, Mildenhall, Feltwell and Fairford, England (Nov 2024)
UAP · Other · 34 sources · 1 photos
69Well documented
Roswell Incident
July 8, 1947 · Foster ranch, about 30 miles south of Corona, New Mexico (announced from Roswell Army Air Field)
UAP · Disc / saucer · 80 sources · 6 photos
64Well documented
Danish Airport and Military Base Drone Incursions
September 22, 2025 · Copenhagen Airport (Kastrup), with further sightings at Aalborg Airport, Skrydstrup Air Base, Karup Air Base and other Danish sites
UAP · Unknown · 34 sources
60Well documented
The Enfield Poltergeist
c. 1977 · 284 Green Street, Brimsdown, Enfield, North London
Paranormal · Other · 50 sources · 9 photos
59Partially documented
The Belgian UFO Wave
November 29, 1989 · Eupen and the Hautes Fagnes, Liège province, later across Wallonia
UAP · Triangle · 62 sources
59Partially documented
The Oak Ridge Atomic Plant Radar-Visual Flap
October 1950 · Oak Ridge and Knoxville, Tennessee
UAP · Other · 23 sources
58Partially documented
The 1978 Italian UFO Wave
1978 · Across Italy, especially the central and southern Adriatic coast, Sicily, Calabria, Liguria and Piedmont
UAP · Disc / saucer · 35 sources · 1 photos
55Partially documented
The 1947 Flying Disc Craze: America's First Flying Saucer Wave
c. 1947 · United States (nationwide, heaviest in the Pacific states: California, Washington and Oregon)
UAP · Disc / saucer · 31 sources
55Partially documented
The Seaford Poltergeist ("Popper"), Herrmann House, Long Island, 1958
February 3, 1958 · Herrmann house, Seaford, Town of Hempstead, Nassau County, Long Island, New York
Paranormal · Other · 36 sources · 2 photos
55Partially documented
The Mariana UFO Film
August 15, 1950 · Legion Park, Great Falls, Montana
UAP · Disc / saucer · 63 sources · 3 photos
55Partially documented
The Hudson Valley UFO Wave (The Westchester Boomerang)
December 31, 1982 · Hudson Valley (Westchester, Putnam and Dutchess counties), New York
UAP · Boomerang / V · 64 sources · 1 photos
55Partially documented
Rendlesham Forest Incident
December 26, 1980 · Rendlesham Forest, between RAF Woodbridge and RAF Bentwaters, Suffolk, England
UAP · Triangle · 69 sources
52Partially documented
The Lubbock Lights
August 25, 1951 · Lubbock, Texas
UAP · Formation · 38 sources · 4 photos
50Partially documented
Shipton and Ward Yeti Footprints, Menlung Glacier, 1951
November 8, 1951 · Menlung Glacier, below the Menlung La, Gauri Sankar group, Nepal-Tibet border
Cryptid · Creature · 49 sources · 5 photos
49Partially documented
The British Phantom Airship ("Scareship") Wave of 1909
March 23, 1909 · England, Wales and Ireland (Peterborough, East Anglia, Birmingham, Cardiff and Caerphilly, Belfast, Kingstown)
UAP · Cigar · 36 sources
48Partially documented
Borley Rectory: Harry Price's Year in the Most Haunted House in England (1937-1938)
May 1937 · Borley Rectory, Hall Road, Borley, Essex, England
Paranormal · Being / humanoid · 64 sources · 13 photos
48Partially documented
Trans-en-Provence Case
January 8, 1981 · Trans-en-Provence, Var, Provence
UAP · Disc / saucer · 52 sources · 2 photos
48Partially documented
The Trindade Island Photographs
January 16, 1958 · Ilha da Trindade (Trindade Island), Trindade and Martim Vaz, Espírito Santo, South Atlantic
UAP · Disc / saucer · 46 sources · 13 photos
47Partially documented
The Rosenheim Poltergeist (Spuk von Rosenheim)
1967 · Law office of Sigmund Adam, Rosenheim, Bavaria
Paranormal · Other · 31 sources · 1 photos
46Partially documented
The Valentich Disappearance over Bass Strait
October 21, 1978 · Bass Strait, between Cape Otway and King Island, Victoria
UAP · Other · 55 sources · 1 photos
46Partially documented
The Zanfretta UFO Incident, Torriglia 1978
December 6, 1978 · Villa Casa Nostra, Marzano, Torriglia, Genoa, Liguria
UAP · Being / humanoid · 22 sources · 1 photos
45Partially documented
The French UFO Wave of 1954 (la vague de 1954)
September 1954 · France, nationwide (Quarouble, Prémanon, Marcilly-sur-Vienne, Biot, Ambleteuse, Bélesta and hundreds of other communes)
UAP · Disc / saucer · 27 sources · 1 photos
45Partially documented
Val Johnson Incident
August 27, 1979 · State Highway 220 near County Road 5, west of Stephen, Marshall County, Minnesota
UAP · Orb / light · 49 sources · 12 photos
45Partially documented
The Solway Firth Spaceman
May 23, 1964 · Burgh Marsh, near Burgh by Sands, overlooking the Solway Firth, Cumberland (now Cumbria)
UAP · Being / humanoid · 41 sources · 6 photos
45Partially documented
The Huella del Pajarillo Burn Mark, Capilla del Monte
c. 1986 · Cerro Pajarillo, near Capilla del Monte, Ischilín Department, Córdoba
UAP · Disc / saucer · 25 sources · 3 photos
44Partially documented
The Jersey Devil's Phenomenal Week
January 16, 1909 · South Jersey and the Philadelphia area (Woodbury, Bristol, Burlington, Gloucester City, Camden, Trenton)
Cryptid · Creature · 50 sources
44Partially documented
The Falcon Lake Incident
May 20, 1967 · Rock outcrop north of Falcon Lake, Whiteshell Provincial Park, Manitoba
UAP · Disc / saucer · 57 sources
44Partially documented
Skinwalker Ranch (Sherman Ranch)
1994 · Skinwalker Ranch, southeast of Ballard, Uintah County, Utah
UAP · Other · 84 sources
44Partially documented
The Patterson-Gimlin Bigfoot Film
October 20, 1967 · Bluff Creek, Six Rivers National Forest, California
Cryptid · Creature · 51 sources · 2 photos
44Partially documented
The Warren Smith Photographs: Highwood Ranger Station, Alberta, 1967
July 3, 1967 · Near Highwood Ranger Station, about 50 miles southwest of Calgary, Alberta (also catalogued as near Nanton)
UAP · Disc / saucer · 11 sources · 8 photos
43Partially documented
Voronezh UFO Incident
September 27, 1989 · Yuzhny Park (Kozly park), Mashmet area, left bank, Voronezh
UAP · Sphere · 60 sources
43Partially documented
Valensole Encounter (Maurice Masse)
July 1, 1965 · L'Olivol lavender field, near Valensole, Alpes-de-Haute-Provence (then Basses-Alpes)
UAP · Egg · 51 sources
42Partially documented
The Lonnie Zamora Incident, Socorro
April 24, 1964 · Arroyo on the southern outskirts of Socorro, near the town dynamite shack, Socorro County, New Mexico
UAP · Egg · 55 sources
42Partially documented
Salem Coast Guard Air Station UFO Photograph
July 16, 1952 · U.S. Coast Guard Air Station Salem, Winter Island, Salem, Massachusetts
UAP · Formation · 22 sources · 3 photos
41Partially documented
Rhodes UFO photographs ("shoe-heel" photos), Phoenix, Arizona, 1947
July 7, 1947 · Phoenix, Arizona
UAP · Disc / saucer · 33 sources · 1 photos
41Partially documented
Mystery Airship Wave of 1896 and 1897
November 17, 1896 · Sacramento, California, then Northern California, the Midwest and Texas
UAP · Cigar · 45 sources
41Partially documented
The Calvine UFO Photograph
August 4, 1990 · Moorland above Calvine, near Pitlochry, Perth and Kinross
UAP · Diamond · 56 sources · 3 photos
41Partially documented
The Rex Heflin UFO Photographs, Santa Ana 1965
August 3, 1965 · Myford Road near Walnut Avenue, outside Santa Ana (Tustin/Irvine area), Orange County, California
UAP · Disc / saucer · 39 sources · 16 photos
40Partially documented
The Kumburgaz UFO Videos
2008 · Beach of the Yenikent housing complex, Kumburgaz, Büyükçekmece, Istanbul Province
UAP · Disc / saucer · 32 sources · 5 photos
40Partially documented
The Dudley Dorito: Black Triangle Over the West Midlands
November 28, 2007 · Halesowen, Metropolitan Borough of Dudley, West Midlands
UAP · Triangle · 24 sources
39Partially documented
Our Lady of Zeitoun
April 2, 1968 · St. Mary's Coptic Orthodox Church, Tomanbay Street, Zeitoun, Cairo
Paranormal · Being / humanoid · 28 sources · 1 photos
39Partially documented
Council Bluffs Molten Metal Landing at Big Lake Park
December 17, 1977 · Big Lake Park (levee by Gilbert's Pond), Council Bluffs, Pottawattamie County, Iowa
UAP · Sphere · 33 sources
38Partially documented
The Tinley Park Lights
August 21, 2004 · Tinley Park, Cook County, Illinois
UAP · Triangle · 40 sources · 1 photos
37Partially documented
The Passaic UFO Photographs (George J. Stock)
July 31, 1952 · 221 Brooks Avenue, Passaic, New Jersey
UAP · Disc / saucer · 24 sources · 2 photos
37Partially documented
Kirtland AFB Manzano Sightings and the Paul Bennewitz Affair
August 8, 1980 · Manzano Weapons Storage Area and Coyote Canyon, Kirtland AFB, Albuquerque, New Mexico
UAP · Disc / saucer · 29 sources
37Partially documented
The McMinnville (Trent) UFO Photographs
May 11, 1950 · Trent farm, southwest of McMinnville, Yamhill County, Oregon
UAP · Disc / saucer · 56 sources · 6 photos
37Partially documented
The Florida Scoutmaster Case: Sonny DesVergers and the Palmetto Scrub Encounter
August 19, 1952 · Military Trail, inland from West Palm Beach, Palm Beach County, Florida
UAP · Disc / saucer · 24 sources
36Partially documented
The Carp 'Guardian' UFO Landing Video
August 18, 1991 · Manion Corners, near Carp, West Carleton Township (now Ottawa), Ontario
UAP · Disc / saucer · 17 sources · 1 photos
36Partially documented
The El Bosque Air Show UFO
November 5, 2010 · El Bosque Air Base, Santiago
UAP · Other · 23 sources · 1 photos
36Partially documented
The Shennongjia Wildman: Forestry Officials Meet the Yeren at Chunshuya, 1976
May 14, 1976 · Chunshuya pass, on the border of Fang County and Shennongjia, Hubei
Cryptid · Creature · 14 sources
36Partially documented
The Skookum Cast
September 22, 2000 · Skookum Meadow, Gifford Pinchot National Forest, Skamania County, Washington
Cryptid · Creature · 28 sources · 1 photos
36Partially documented
The Knock Apparition
August 21, 1879 · South gable of the Church of St John the Baptist, Knock, County Mayo
Paranormal · Being / humanoid · 45 sources
36Partially documented
The Warminster "Thing" UFO flap
December 25, 1964 · Warminster, Wiltshire, England
UAP · Cigar · 21 sources · 3 photos
36Partially documented
Malmstrom AFB Echo and Oscar Flight Missile Shutdowns
March 16, 1967 · Echo Flight missile complex between Hilger and Winifred, near Malmstrom AFB, Great Falls, Montana
UAP · Disc / saucer · 47 sources
36Partially documented
The Mothman of Point Pleasant
November 15, 1966 · TNT area (McClintic Wildlife Management Area), near Point Pleasant, Mason County, West Virginia
Cryptid · Creature · 64 sources
36Partially documented
Bob Lazar and the S-4 Claims
March 1989 · Papoose Lake and the Groom Lake road, near Area 51, Lincoln County, Nevada
UAP · Disc / saucer · 92 sources
36Partially documented
The Buga Sphere
March 2, 2025 · Alto Bonito sector, Guadalajara de Buga, Valle del Cauca
UAP · Sphere · 31 sources
35Partially documented
Marius Dewilde landing at Quarouble
September 10, 1954 · Level crossing No. 79, Quarouble, Nord, near Valenciennes
UAP · Other · 30 sources
35Partially documented