Within Vermont UFOs

Did North Concord Corroborate the Hill Encounter?

An ambiguous 1961 military report became far more famous after it was linked to Betty and Barney Hill.

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On this page

  • What the Air Force record actually says
  • How the Hill connection developed
  • Why the evidence remains circumstantial
Preview for Did North Concord Corroborate the Hill Encounter?

Introduction

The North Concord case did not independently confirm Betty and Barney Hill’s reported encounter. What it does provide is a genuine military radar report from Vermont on the same date, 19 September 1961, several hours before the Hills described seeing an unusual object while driving through New Hampshire. That coincidence later made the radar contact appear to be powerful corroboration.

Overview image for North Concord

The surviving record is less decisive. North Concord Air Force Station tracked one target for about 18 minutes at a reported altitude of 62,000 feet. Air Force analysts considered a weather balloon the most likely explanation, although the documentation was too limited to establish the target’s identity beyond doubt. More importantly, the radar contact was separated from the Hills’ sighting by time, distance and uncertain movement. It shows that radar personnel recorded something they could not immediately identify; it does not show that they tracked the object reported by the Hills.[nicap.org]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

North Concord illustration 3

What the Air Force record actually says

North Concord Air Force Station stood on East Mountain in Vermont’s Northeast Kingdom. Operated by the 911th Aircraft Control and Warning Squadron, it formed part of the Cold War radar network watching the northern approaches to the United States. The site was therefore equipped and staffed to identify aircraft, making any unexplained return more interesting than an ordinary unaided sighting. The station operated only briefly, opening during the 1950s and closing in 1963.[VTDigger]vtdigger.orgA Cold War relic, the East Haven radar station closed 50…8 Aug 2013 — Prior to its closing, a UFO sighting was allegedly obser…

According to the Project Blue Book record card, the contact began at 2122 Greenwich Mean Time, equivalent to 5.22 pm Eastern Standard Time on 19 September 1961. An AN/MPS-14 height-finding radar detected a target at approximately 62,000 feet, on a bearing of 196 degrees and at a range of 84 miles. It appeared comparable in size to a large aircraft and produced what operators regarded as a normal radar return. Contact lasted 18 minutes and ended at roughly 80 miles’ range. The recorded course was described as slow and irregular, including movement towards the north-west and then south.[NICAP]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

Those details matter because the case was not simply a vague story attached to the abandoned base. A date, time, altitude, bearing, distance, duration and radar type survive in the documentation. The report also came from military personnel rather than from later folklore. Project Blue Book records are now declassified and held by the US National Archives, although the completeness and quality of individual case files vary greatly.[National Archives]archives.govNational Archives Project BLUE BOOKThe project closed in 1969 and we…Read more…

The record does not, however, describe spectacular performance. The target was not reported accelerating at extraordinary speed, making abrupt vertical climbs or outrunning interceptors. Its apparent low speed and high altitude led Air Force analysts towards a balloon explanation. The record card’s conclusion was “probably balloon”, rather than “unidentified”. Its erratic-looking course was treated as compatible with a high-altitude object drifting in changing winds.[NICAP]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

That conclusion was provisional rather than demonstrative. The surviving material does not identify a particular balloon launch, supply a complete trajectory or preserve enough raw radar data for an independent reconstruction. There were no photographs, physical traces or confirmed visual observations tied securely to the radar return. “Probably balloon” therefore represents the Air Force’s best conventional assessment from limited information, not a documented match to a named balloon.

Some modern summaries also reproduce descriptions of a round or spinning object changing between red, white, blue and green near the North Star. These visual details sit awkwardly beside the record card’s straightforward account of a high-altitude radar target. The discrepancy is a warning that material grouped under the North Concord file has sometimes been summarised inconsistently. The strongest evidence is the dated radar record; more elaborate descriptions should not automatically be treated as part of the same observation without checking the underlying pages.[govweird]govweird.comn concord afs vt september 1961It changed color among red, white, blue, and green…. Image: N Concord, AFS, Vermont, September 1961, page 1 View transcribed text…Published: september 1961

North Concord illustration 1

How the Hill connection developed

Betty and Barney Hill were returning to Portsmouth, New Hampshire, from a trip to Canada on the night of 19–20 September 1961. They reported seeing a bright object while travelling south through the White Mountains, with their best-known close observation occurring near the Franconia and Lincoln area at about 10.30 pm. Their later account developed into an alleged abduction narrative, particularly after hypnosis sessions conducted in 1964 and the publication of John Fuller’s The Interrupted Journey in 1966. The couple’s papers are now preserved by the University of New Hampshire.[concordmonitor.com]concordmonitor.comin lincoln a ufo story that is out of this world 15987667in lincoln a ufo story that is out of this world 15987667

The North Concord radar report took place on the same calendar date, but roughly five hours before the Hills’ main visual encounter. Because the station was in northern Vermont and the Hills travelled through nearby northern New Hampshire later that evening, UFO researchers began treating the events as possible stages in one object’s movement across the region. In its strongest form, the argument suggests that the Air Force detected the craft before it approached the Hills’ route.

That interpretation became more prominent after researchers obtained Air Force documents during the late 1960s and 1970s. Pro-Hill accounts cited the North Concord contact alongside a separate, poorly documented radar report associated with Pease Air Force Base in New Hampshire. The two radar stories gave later retellings an appealing structure: military detection before or around a dramatic civilian encounter, followed by an official investigation that allegedly failed to connect the evidence.[NICAP]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

The connection was not established in the Hills’ earliest public account. North Concord personnel did not report identifying a vehicle travelling towards the Hills, and there is no surviving contemporary statement from the radar operators saying their target resembled the object described by the couple. The North Concord message was transmitted to Project Blue Book on 22 September, after the radar event but before the Hill story became publicly famous. That timing supports the independence of the radar report, but independence alone does not prove identity.[NICAP]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

The distinction is important. A report made independently before the Hill case became famous is less vulnerable to simple imitation or retrospective invention. Yet two independent reports can still concern entirely different things. A balloon detected in the late afternoon and a bright astronomical object, aircraft or other stimulus seen by motorists late at night would create the same superficial “same date, same region” pattern.

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Why the evidence remains circumstantial

The most serious difficulty is the time gap. North Concord acquired its target at 5.22 pm. Betty Hill’s first observation is generally placed several hours later, with the close encounter near Lincoln occurring around 10.30 pm. No continuous radar track bridges that interval. To regard the two reports as one object requires an undocumented assumption about where the radar target went after contact was lost and what it did for the following hours.[nicap.org]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

The reported bearing also does not produce a simple line from East Mountain to the Hills. A bearing of 196 degrees points generally south-south-west from North Concord, while the Hill route lay mainly to the south-east in New Hampshire. Radar bearings, ranges and later geographical summaries have not always been handled consistently, but the surviving figures do not clearly describe a target heading directly towards Franconia Notch. The record says the course altered; it does not supply enough plotted positions to reconstruct a path to the Hill sighting area.

The target’s reported altitude creates a further problem. At 62,000 feet, it was far above ordinary commercial traffic of the period but within the operating region of high-altitude balloons. An object at that height could be visible over a wide area, yet the Hills described something that appeared to descend, manoeuvre near their car and eventually reveal structural detail through binoculars. Linking those descriptions requires the radar target to have changed altitude and behaviour dramatically after North Concord lost it, none of which is documented.

The radar return itself was not necessarily an engineered craft. Height-finding radar could detect balloons or their suspended equipment and reflectors. Apparent changes of direction could result from wind variation, tracking uncertainty or the difficulty of following a slow target at long range. The Air Force’s balloon assessment is therefore technically plausible, even though the file does not contain the launch records needed to make it conclusive.[NICAP]nicap.orgThe relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a…

Researchers sympathetic to the Hill account have argued that the target’s movement, aircraft-like return and lack of a positively identified balloon leave the case open. That is fair as far as it goes: “probably balloon” is not the same as a verified explanation. But an unverified conventional explanation does not automatically strengthen the extraterrestrial interpretation. It leaves the radar incident uncertain within a fairly ordinary range of possibilities.

Even some investigators within the UFO research community have challenged the claimed correlation. Richard Hall, a former official of the National Investigations Committee on Aerial Phenomena, characterised the Hill radar connection as weak, emphasising that the known reports did not line up closely enough in time and position to justify treating them as mutual confirmation. The existence of this internal criticism matters because doubt about the link is not confined to blanket sceptics or to the Air Force.[NICAP]nicap.orgOpen source on nicap.org.

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North Concord illustration 2

Did North Concord corroborate the Hills?

North Concord offers limited corroboration only in the broadest sense. It confirms that military radar personnel in the region reported an unusual target on 19 September 1961, independently of the Hills’ later fame. That makes the Vermont incident historically significant and explains why it remains central to discussions of the Hill case.

It does not corroborate the Hills’ detailed claims. The radar report contains no occupants, landed craft, close approach, missing time or abduction. It does not establish that the radar target reached the White Mountains, and it ended hours before the Hills’ principal observation. The Air Force judged the return probably attributable to a balloon, while the surviving data are too sparse either to verify that explanation or to replace it with a more extraordinary one.

Later reporting has made the connection more famous, but not substantially stronger. Local histories and popular accounts now often state that North Concord “tracked the Hill UFO” or detected an object only hours before the alleged abduction. The first half of that wording goes beyond the evidence; the second is chronologically true but easily mistaken for proof of continuity.[vtdigger.org]vtdigger.orgA Cold War relic, the East Haven radar station closed 50…8 Aug 2013 — Prior to its closing, a UFO sighting was allegedly obser…

The most defensible assessment is therefore that North Concord and the Hill encounter form a historically linked case family, not a single demonstrated event. The radar record is authentic, independent and unresolved at the level of exact identification. The supposed connection remains circumstantial, resting mainly on a shared date, regional proximity and later interpretation. Within Vermont’s UFO history, its value lies less in proving the Hill story than in showing how an ambiguous Cold War military report could acquire a much larger meaning once attached to America’s most influential alleged abduction case.

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Endnotes

1. Source: nicap.org
Link:https://www.nicap.org/reports/0450-74.htm

Source snippet

The relatively low speed and high altitude of the subject UFO, coupled with an erratic course (including hovering), appear to rule out a...

2. Source: govweird.com
Title: n concord afs vt september 1961
Link:https://www.govweird.com/topics/ufo/project-blue-book/n-concord-afs-vt-september-1961

Source snippet

It changed color among red, white, blue, and green.... Image: N Concord, AFS, Vermont, September 1961, page 1 View transcribed text...

Published: september 1961

3. Source: archives.gov
Title: National Archives Project BLUE BOOK
Link:https://www.archives.gov/research/military/air-force/ufos

Source snippet

The project closed in 1969 and we...Read more...

4. Source: vtdigger.org
Link:https://vtdigger.org/2013/08/08/a-cold-war-relic-the-east-haven-radar-station-closed-50-years-ago/

Source snippet

A Cold War relic, the East Haven radar station closed 50...8 Aug 2013 — Prior to its closing, a UFO sighting was allegedly obser...

5. Source: nicap.org
Title: Length of observation was 18 minutes
Link:https://www.nicap.org/CATEGORIES/09-RADAR_Cases/610919nconcord_dir.htm

Source snippet

UFO ReportSeptember 19, 1961; North Concord AFS, Vermont At 5:22 local time, a return was picked up on an AN/MPS-14 height finder ra...

Published: September 19, 1961

6. Source: nicap.org
Title: 610919nconcord rep
Link:https://www.nicap.org/reports/610919nconcord_rep.htm

Source snippet

"Subject: September 19, 1961; North Concord AFS, Vermont... [http://www.footnote.com/image/8303350/](http://www.footnote.com/image/8303350/) 1 PROJECT 10073 RECORD CARD [http://www..."](http://www...")...

Published: September 19, 1961

7. Source: yalebooks.yale.edu
Title: the alien abduction story of two civil rights activists
Link:https://yalebooks.yale.edu/2025/04/18/the-alien-abduction-story-of-two-civil-rights-activists/

8. Source: Wikipedia
Link:https://en.wikipedia.org/wiki/Barney_and_Betty_Hill_incident

9. Source: nicap.org
Link:https://www.nicap.org/reports/hillradarweak.htm

10. Source: nicap.org
Link:https://www.nicap.org/chronos/1961fullrep.htm

11. Source: nicap.org
Title: ar 720513
Link:https://www.nicap.org/anreact/ar-720513.htm

12. Source: nicap.org
Title: The Zeta Reticuli Incident
Link:https://www.nicap.org/articles/hillzeta.htm

13. Source: nicap.org
Title: The Enduring Riddle of Betty and Barney Hill
Link:https://www.nicap.org/reports/hillriddle.htm

14. Source: Wikipedia
Title: East Mountain (Essex County, Vermont)
Link:https://en.wikipedia.org/wiki/East_Mountain_%28Essex_County%2C_Vermont%29

15. Source: Wikipedia
Title: Project Blue Book
Link:https://en.wikipedia.org/wiki/Project_Blue_Book

16. Source: Wikipedia
Title: Project Blue Book
Link:https://de.wikipedia.org/wiki/Project_Blue_Book

17. Source: nicap.org
Title: 610919indianhead dir
Link:https://nicap.org/610919indianhead_dir.htm

18. Source: nicap.org
Title: Advanced Aerial Devices
Link:https://www.nicap.org/books/aadkw/aadkw_ch3.htm

19. Source: nicap.org
Title: What Radar Tells About Flying Saucers
Link:https://www.nicap.org/whatradar.htm

20. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/year/1961

21. Source: govweird.com
Title: webb afb tx august 1961
Link:https://www.govweird.com/topics/ufo/project-blue-book/webb-afb-tx-august-1961
Published: august 1961

22. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/state/vermont

23. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/year/1960

24. Source: govweird.com
Link:https://www.govweird.com/

25. Source: govweird.com
Title: scott afb il november 1961
Link:https://www.govweird.com/topics/ufo/project-blue-book/scott-afb-il-november-1961
Published: november 1961

26. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/state/dc

27. Source: govweird.com
Title: washington dc november 1961
Link:https://www.govweird.com/topics/ufo/project-blue-book/washington-dc-november-1961
Published: november 1961

28. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/state/wisconsin

29. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/state/wyoming

30. Source: govweird.com
Link:https://www.govweird.com/topics/ufo/project-blue-book/state/alaska

31. Source: nicap.org
Title: section 12
Link:https://www.nicap.org/ufoe/section_12.htm

32. Source: concordmonitor.com
Title: in lincoln a ufo story that is out of this world 15987667
Link:https://www.concordmonitor.com/2018/03/17/in-lincoln-a-ufo-story-that-is-out-of-this-world-15987667/

33. Source: vermontmaturity.com
Title: long abandoned vermont air force base remains a curiosity
Link:https://vermontmaturity.com/vermont-history/long-abandoned-vermont-air-force-base-remains-a-curiosity/

Additional References

34. Source: newengland.com
Title: Aliens in New England?
Link:https://newengland.com/yankee/history/ufo-sightings-alien-sightings/

Source snippet

A Timeline of UFO Sightings and...East Mountain Radar Base (1961). During the Cold War, the U.S. Air Force maintained a radar base on Ve...

35. Source: nsa.gov
Link:https://www.nsa.gov/portals/75/documents/news-features/declassified-documents/ufo/usaf_fact_sheet_95_03.pdf

36. Source: facebook.com
Link:https://www.facebook.com/ExploringLegends/posts/newenglandlegends-podcast-286-vermonts-abandoned-ufo-base-we-hike-up-east-mounta/739385377554701/

37. Source: facebook.com
Link:https://www.facebook.com/BroBible/posts/a-motorist-in-midlothian-virginia-was-forced-to-stop-her-car-and-film-a-metallic/1274425261391266/

38. Source: facebook.com
Link:https://www.facebook.com/nhchronicle/posts/aliens-ufos-and-one-of-new-hampshires-most-enduring-mysteries-a-new-exhibit-at-t/1578891320903961/

39. Source: pbs1777.org
Link:https://pbs1777.org/wp-content/uploads/2020/08/2010-09_MilnerReport.pdf

40. Source: hmdb.org
Link:https://www.hmdb.org/m.asp?m=74571

41. Source: archive.org
Link:https://archive.org/stream/BernardSieglerTechnicsAndTime1TheFaultOfEpimetheus/Brad%20Sparks%20-%20Comprehensive%20Catalog%20of%201%2C600%20Project%20Blue%20Book%20UFO%20Unknowns_djvu.txt

42. Source: guinnessworldrecords.com
Link:https://www.guinnessworldrecords.com/world-records/77879-official-balloon-altitude-record-absolute

43. Source: martinshough.com
Link:https://www.martinshough.com/