Within Maryland UFOs
Maryland’s Role in the 1952 Washington Radar UFO Wave
Covers the radar blips over Andrews Air Force Base and their impact on federal UFO investigations.
On this page
- Radar tracking and military response
- CIA and Air Force analysis
- Temperature inversion and sceptical interpretations
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Introduction
In the summer of 1952, the skies above the United States capital became the centre of one of the most closely scrutinised unidentified aerial phenomena events in early Cold War history. What later became known as the 1952 Washington, D.C. UFO incident involved multiple radar systems and visual witnesses tracking unexplained blips and lights over restricted airspace on consecutive weekends in July. Significantly for Maryland’s aviation and defence history, one of the key radar confirmations came from operators at Andrews Air Force Base — then a frontline air defence installation safeguarding the Washington region. This page examines Maryland’s role in that episode, explores how local radar data was interpreted, what official and sceptical analyses followed, and how the case shaped early national UFO investigation policy.[Wikipedia]
Radar Tracking Near Maryland and the Andrews Air Force Base Link
The 1952 Washington events were exceptional in the early UFO record because multiple independent radar stations detected the same unidentified targets simultaneously. Controllers at Washington National Airport initially noticed unusual returns on the night of 19–20 July, and when they phoned nearby Andrews Air Force Base — located in Prince George’s County, Maryland — the base radar operators reported seeing similar unidentified blips on their own screens. This confirmed that the anomalies were not isolated equipment glitches at a single facility.[Wikipedia]
Project1947’s chronology of official files notes specific timestamps when Andrews AFB radar tracked 10–12 unidentified objects moving above Washington’s airspace, corroborated by what controllers at the National Airport radar centre were seeing. Controllers then notified higher command posts, and interceptor jets were scrambled to investigate.[Project 1947]project1947.comProject 1947PROJECT 1947 - July 1952 Washington D.C. UFO Sightings…
To civilian and military personnel observing from Maryland and surrounding areas, the targets appeared at multiple altitudes and positions, sometimes lingering near overlapping airspace boundaries. Reports from Andrews personnel — such as an Air Force Captain present in the radar centre — mention perceptions of changing object colours and apparent motion, though such visual observations were later judged ambiguous by official analysts.[Wikipedia]
Military Response and Project Blue Book Analysis
The inclusion of Andrews AFB radar data elevated the incident from a local air traffic curiosity into a matter of national security concern. At the time, the U.S. Air Force’s Project Blue Book had just been established to collect and evaluate UFO reports across the country. The Washington radar contacts — especially the confirmation from Andrews as well as other radar sites — represented one of the first major tests of this nascent programme’s investigative and interpretive capabilities.[Wikipedia]
In response to the accumulation of sightings and radar contacts over several hours on 19–20 and 26–27 July, the Air Force dispatched F‑94 interceptor jets. Pilots were vectored towards radar contacts but generally failed to visually intercept or confirm the targets, which would inexplicably vanish or reappear elsewhere by the time aircraft arrived. The scramble from New Castle Air Force Base, combined with radar plotting around the National Capital Region — including at Andrews — ensured Maryland’s aviation community was directly involved in national air defence activity as these events unfolded.[UFO Casebook]ufocasebook.comUFO Casebook1952 Washington D.C. Sightings, UFO Casebook Files…
Project Blue Book’s official categorisation eventually interpreted the unidentified returns on radar largely as the result of temperature inversion phenomena — atmospheric layers that can bend radar waves and create false returns — and attributed many visual sightings to conventional aerial or astronomical objects. The Air Force at a Pentagon press briefing in late July emphasised that none of the radar contacts represented solid aerial threats to national security.[Wikipedia]
Temperature Inversion and Sceptical Interpretation
The dual confirmation from Washington National and Andrews AFB radars initially made the sightings appear robust, but the inversion hypothesis became the dominant sceptical explanation. Meteorologists and technical analysts noted that atmospheric temperature inversions were present over the region on both nights of the primary sightings, and that such inversions can make stationary ground objects appear on radar as if they were airborne. This would help explain why blips were seen across different radar sites including Maryland’s Andrews AFB, despite a lack of physical contact with interceptor aircraft.[Wikipedia]
Project Blue Book files, as later summarised by historians, also indicate that the Civil Aeronautics Administration (pre‑FAA) analysed the radar data at the Air Force’s request and concluded that inversion layers correlated with the timing of the unidentified targets. That assessment fed into the broader official framing of the events.[Wikipedia]
Critics, including later researchers and some of the radar operators themselves, disputed this explanation. They argued that inversion returns typically produce weak, diffuse signals unlike the “solid” radar contacts tracked over several hours by multiple systems including those at Andrews AFB. Some operators insisted the blips behaved unlike known atmospheric artifacts, though these counterarguments never changed the official categorisation.[Wikipedia]
Implications for Maryland’s Aviation and UFO History
Maryland’s position in the Washington radar sightings embeds the state in a key moment of UFO investigation history. Radar operators and controllers at Andrews AFB were among the earliest military personnel to simultaneously document unidentified returns with civilian radar sites. Their involvement helped shift public and institutional attention toward systematic analysis and standardised reporting under Project Blue Book, which would dominate UFO discourse for nearly two decades.[Wikipedia]
The episode also highlighted limitations in early radar technology and the challenges of interpreting complex signals — debates that would recur in later unidentified aerial phenomena research. Whether or not one accepts the official temperature inversion explanation, the Maryland‑linked radar tracking remains one of the earliest high‑profile cases demonstrating how multiple air defence assets could converge on unexplained aerial phenomena and shape both military procedure and public perception.[Wikipedia]
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Endnotes
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Source: Wikipedia
Title: 1952 Washington, D.C. UFO incident
Link: https://en.wikipedia.org/wiki/1952_Washington%2C_D.C._UFO_incident -
Source: project1947.com
Link: https://www.project1947.com/fig/1952d.htmSource snippet
Project 1947PROJECT 1947 - July 1952 Washington D.C. UFO Sightings...
Published: July 1952
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Source: Wikipedia
Title: Project Blue Book
Link: https://en.wikipedia.org/wiki/Project_Blue_Book -
Source: history.com
Title: ufos washington dc news reports
Link: https://www.history.com/articles/ufos-washington-dc-news-reportsSource snippet
In 1952, UFOs outran U.S. Air Force jets over Washington, D.C. Was this the moment aliens first made contact? 3...
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Source: history.com
Title: u s air force closes the book on ufos 45 years ago
Link: https://www.history.com/articles/u-s-air-force-closes-the-book-on-ufos-45-years-ago/Source snippet
In 1952, UFOs outran U.S. Air Force jets over Washington, D.C. Was this the moment aliens first made contact? 3:38m watch PROJECT BLUE BO...
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Source: ufos.wiki
Title: Wiki Washington, D. C. Sightings
Link: https://ufos.wiki/case/washington-d-c-sightings/Source snippet
C. Sightings - UFOs WikiWASHINGTON, D. C. SIGHTINGS 1952 On Saturday night, July 19, 1952, air traffic controller Edward Nugent at Washin...
Published: July 19, 1952
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Source: ufocasebook.com
Link: https://www.ufocasebook.com/washingtondc1952.htmlSource snippet
UFO Casebook1952 Washington D.C. Sightings, UFO Casebook Files...
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Source: creativespirits.net
Title: 1952 washington d c ufo incident
Link: https://www.creativespirits.net/1952-washington-d-c-ufo-incident/Source snippet
UFO incident | Creativespirits.netMarch 21, 2019 — At Andrews Air Force Base, meanwhile, the control tower personnel were tracking on rad...
Published: March 21, 2019
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Source: paranormal-encyclopedia.com
Link: https://www.paranormal-encyclopedia.com/u/ufo/sightings/1952/washington.htmlSource snippet
UFO incidentUFO SIGHTINGS: 1952 Image: Washington D.C. UFOs Washington D.C., 1952. UFOs were witnessed both visually and on radar. "The s...
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Source: science.howstuffworks.com
Title: ufo government5
Link: https://science.howstuffworks.com/space/aliens-ufos/ufo-government5.htmSource snippet
UFO Incident - Science | HowStuffWorksWant to learn more about UFOs and aliens? Check out these articles: How UFOs Work · The Roswell UFO...
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Source: thinkanomalous.com
Title: Washington D.C
Link: https://www.thinkanomalous.com/washington-dc-ufo-sightings.htmlSource snippet
UFO Sightings, 1952 - Think AnomalousWASHINGTON D.C. UFO SIGHTINGS, 1952 iframe Download audio m4a (right-click to save) File Size: | 127...
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Source: theufodatabase.com
Title: 1952 washington dc ufo incident
Link: https://theufodatabase.com/incidents/1952-washington-dc-ufo-incidentSource snippet
This sighting is important because it occurred around the U.S. capital over several days, registering on radar and alarm...
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Source: everything.explained.today
Title: 1952 Washington, D.C. UFO incident
Link: https://everything.explained.today/1952_Washington%2C_D.C._UFO_incident/Source snippet
UFO incident explained1952 WASHINGTON, D.C. UFO INCIDENT EXPLAINED From July 12 to 29, 1952, a series of unidentified flying object (UFO)...
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Source: thenightskyii.org
Title: Washington D.C
Link: https://www.thenightskyii.org/dc.htmlSource snippet
UFO IncidentWASHINGTON D.C. UFO INCIDENT Image: Washington D.C. UFO Incident DATE: JULY 13 TO JULY 29, 1952 LOCATION: WASHINGTON D.C. > A...
Published: July 29, 1952
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Source: wikidisc.org
Title: 1952 Washington, D.C. UFO incident
Link: https://www.wikidisc.org/wiki/1952_Washington%2C_D.C._UFO_incidentSource snippet
UFO incident | WikiDiscJuly 19, 1952 — EVIDENCE[EDIT | EDIT SOURCE] RADAR DATA[EDIT | EDIT SOURCE] The Washington incidents were notable...
Published: July 19, 1952
Additional References
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Source: wearethemighty.com
Title: When UFOs apparently buzzed the Capitol, the Air Force needed answers. By
Link: https://www.wearethemighty.com/history/1952-washington-ufo-incident/Source snippet
The 1952 UFO Washington sighting that upended decades of denialDecember 28, 2025 — The 1952 UFO Washington sighting that upended decades...
Published: December 28, 2025
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Source: isgp-studies.com
Title: Air Force Jet Fighters Fail to Catch Objects Flying over Washington
Link: https://www.isgp-studies.com/misc/UFOs/press-reports/1952-07-28-wilkes-barre-record-air-force-jet-fighters-failSource snippet
July 28, 1952 — AIR FORCE JET FIGHTERS FAIL TO CATCH OBJECTS FLYING OVER WASHINGTON ISGP section: UFO press reports index 'Things' Sighte...
Published: July 28, 1952
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Link: https://prologue.blogs.archives.gov/2019/12/19/saucers-over-washington-the-history-of-project-blue-book/Source snippet
Over Washington: the History of Project Blue Book19 Dec 2019 — The Federal Government established Project Blue Book in 1952 to collect an...
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Source: facebook.com
Title: A sensational wave of UFO sightings in Washington forced the U.S
Link: https://www.facebook.com/themighty/posts/a-sensational-wave-of-ufo-sightings-in-washington-forced-the-us-air-force-to-rea/1324321313072707/Source snippet
December 28, 2025 — 1952 Washington DC UFO sightings prompt Air Force press conference... Air Force radar tracked up to 10 UFOs for 15-2...
Published: December 28, 2025
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Source: facebook.com
Title: UF Os, or the notion of them, have been around a long time
Link: https://www.facebook.com/ABCNews/posts/ufos-or-the-notion-of-them-have-been-around-a-long-time-heres-a-look-at-how-the-/1371436954843181/Source snippet
Air Force launched a UFO investigation called Project Blue Book in 1952. As Britannica explains, 12,000 reports of UFO sightings or relat...
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Source: youtube.com
Title: sightings occurred in Washington, D.C. This UFO sighting wave, possibly
Link: https://www.youtube.com/watch?v=Jj3DhKSaw0wSource snippet
UFOs Over the White House | The 1952 Washington UAP - YouTubeJuly 13, 2025 — UFOs Over the White House | The 1952 Washington UAP | Full UFO...
Published: July 13, 2025
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Source: ufoinsight.com
Title: Five days after that incident, on the 19^{th} July,
Link: https://www.ufoinsight.com/ufos/waves/1952-ufo-waveSource snippet
The 1952 UFO Wave - UFO InsightSeptember 28, 2019 — AN OVER-RELIANCE ON VOLUNTARY OBSERVERS The already mentioned Nash-Fortenberry sighti...
Published: September 28, 2019
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Title: Declassified documents raise intrigue US Air Force
Link: https://www.facebook.com/WIONews/posts/declassified-documents-raise-intrigueus-air-force-document-cites-12618-ufo-sight/1335121142060390/Source snippet
Air Force launched a UFO investigation called Project Blue Book in 1952. As Britannica explains, 12,000 reports of UFO sightings or relat...
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Source: ufologie.patrickgross.org
Title: In April and May, the flow increased to 3 per
Link: https://ufologie.patrickgross.org/htm/usa1952.htmSource snippet
UFOs at close sight: The US UFO flap of 1952THE WASHINGTON D.C UFO FLAP OF 1952: 1952 started out as the previous one had begun, with few...
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Source: facebook.com
Link: https://www.facebook.com/HISTORY/posts/for-decades-the-existence-of-ufos-was-denied-by-the-us-government-even-after-uni/10157032612491184/Source snippet
f July 19–20. Upon hearing that National Airport's radar...Read more...
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