PROJECT BLUE BOOK

UNIDENTIFIED FLYING OBJECT CASE FILES · 1947 – 1969

CASE REFERENCE7009417

DATE OF SIGHTINGSeptember 1951

REPORTED LOCATIONMichigan Wisconsin

FRAMES7

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FRAME 001 / 007tesseract-200dpi

PROJECT 10073 RECORD CARD

2. LOCATION | 12. CONCLUSIONS

1. DATE

18 September 1951 Michigan = Wisconsin a Prebatly Belloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION O Pessibly Balloon
Locel O Ground- Vi suel WGround-Roder D Probably Aiverelt
cmt__28/1035Z, 11312 0 Air Viauel O Alr-Intercept Reder |2 Possibly Aircroft
5. PHOTOS O Wes Astronomicel
0D Probably Astronomicol
tats | Military Radar OD Pessibly Astronomico!
Ne °
7. LENGTH OF OBSERVATION "| @& NUMBER OF OBJECTS | 9 COURSE cd Orher Ducting —___
three hours Multiple targets Varied 0 Unknown
10. BRIEF SUMMARY OF SIGHTING 11. COMMENTS

Intermittant radar blips similar to large a/c Ducting due to heavy ground fog believ
only somewhat larger. Oblong in shape, Appeared| a possibility. Same phenomena has
as new plot on several occasions, Observed from| occured in less violent form in area

18/1035Z to 18.1131Z and as late as 18/13352Z previously under like weather condition$,
in locations to north of reporting staticn,

Sseeds varied with max at 6,000 mph, Altitude

not estimated because of great speed, Heavy ground
for in area progressing to East and North, High
moisture content, 2 F-86 a/c scrambled with

negative results, Adjacent radar stations encountered
similar plots,

ATIC FORM 329 (REV 26 SEP $2)

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DISTRIBUTION BY iGIMATOR

~ ‘ENT SONTAINS INFORMATION AFFECTING THE NATIONALE NSE OF ‘* miEOS

MENOED, ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANE
Wy MEPRODUCE®S IN WHOLE OF IN PANT, BY THAN UNIFEO *
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: APPROVED UNE 198 .
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8 LS Es a ee on ae at ee
i? INTELLIGENCE INFORMATION REPOR)
a eT oe ae ee
wise EQUATION OM UNCONVENTEONAL ATRORAPE Se es ¥
> ector of Intelligence, “ADF
aah Lakes Areas USA _Director of I cen ce, EADF -
, Ocvover 18 enber 1 : ~2
mae October 1952 18 September 192) ‘ — ee oo

pruce Ke Daumgardner tcctomea, usir__| Director of intelligence, 30th AD

previews retart, di., 42 ¢ ee

_ADG Secret TWX 3075, 23/10 307 (ADC Ref. only): ADC Ltr 200-1 a SA a

SUMMARY: (dnier concise camnery of repet. Gite dpaificanee in prnal oneventence paragraph. List inelornees et lower ieft. Ricgin lez? ef rene? mi A Form 1i8—!et i)

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eee Plottings of wnuguel. redar plottings by stations of the 30th Air
: 1 Division (Defense) 13 September 1951.

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APPROVED: é A
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BRUCE K, BATMGARDVER

Lt- ool onel, USAF
Director of Intelligenca

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Senda oe ee cee te ee eee

OiSTODUTION OY OMICINATOR

‘a i cy = CG, ADC, Ent Air Force Base, Colorado Springs, Colo.
a i 2 sy ~ CG, AMC, Wright-Patterson APB, Dayton, Ohio (Astin: WiCrS)

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STAND © AU AMENDED. ITS TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN ANY MANNER TO AN UNAUTHORIZED PERSON IS*PROMIPITEO BY LAW.

IT MAY Nov Be REPRODUCED IN WHOLE OR IN PART, BY OTHER THAN UNITED STATES AIR FORCE AGENCIES, EXCEPT BY PCO MISSION OF 7 HE OTROCTOR OF
INTELLIGENCE, USAF. - |

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Ref, Par, 5a(1) - ADCL 200-1

(a) A brief description of the object. Radar blip identierl to thas
of sircrart only larger. Oblong in shapee NO tail ever observed in = tura
‘s00vared as new plot on Several occasions,

(b) Time, 1920352 to PIE and contimuing in other areas to north
a3 late as 1813357.

although it varied greatly. Altitude could not be estimated because of great
speed, Electronic equipment used is that at PIL " (Zlhorn) and P-3); (Eapire),

(a). Location of coserver, Observers at Pe3l and B34, Object first

Olotted approximately 50 miles east Milwaukee, Eleven mimstes later at 50
les east Selfridge, then to 20 miles sonth Milwaukee to 60 miles northvest
Selfridges to 80 miles scutheast Sault Ste Marie to 20 miles east Bay City to

20 miles southeast Selfridgs to 60 miles south Calumet, Michigan to 49 miles
northeast Oscoda to 10 miles northeast Port Huron to 3) wiles southeast Sault
Ste Marie to 60 miles. northeast Port Yuron to 455 miles south of Calumet { to 3S
niles nortawest of Milwaukee t 100 miles northesst Sault Ste Marie‘te 10 mi

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nors3 or Bay City.

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(ce) Mamner of observation, Electronic ee estimated at 0000 &.
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(s) Identifying information on chservers, Experienced operations
mersennel at both locations observad blins,
(2) Weather and Wind conditions, Milwaukee weather secuencs 15)
follows: O2G7K 162/149/13 northwest at 1/999, senarally heavy groad
entire area which progressed north and east ding Dertod

_——

(8) Amy activity or condition, meteorclovical | i oiedans
mignt account for the sighting. Ground fog with hich moisture content. y |
penbeisscgeaes 4 Geneva, Wis, seports observations oot wade during nich: i=
eptember 1951 due to ground fog layer 200 ®t. thick, Have no knowledge
wum Spes activity for pericd Eat, report Anrors has ccesurred w 1 last se
Jays, Mo known mateocrie showers occurred, ogervatory at ‘
had no ooservers on diy ab time of period in quests re KSDOSe M9

~

_ 90 Spot activity Aurora or meteoric showers in pact several

(h) Existence of any physical evidence, Negative

——

(i} Interception or identification action taken. 2 P=84 fron Osco:
scramble at 1510352 = negative results,

(3) Local aircraft airborne at the time of sight.in
applicable due to ranze of —— and speed concerned,

‘aitienal information: Adjoining cast ra

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FRAME 007 / 007tesseract-200dpi

EXTRACT FROM STATUS REPORT # 1

DATE: 18 Sert 451

TIME (Local): 0435 to 0531

LOCATION: Great Lakes Region Air Defense Command

LENGTH OF TIME OBSERVED: Approx, 1 Hr. -

SOUND: None |

SPEED: High

ALTITUDES: Unimown

HEADDG: Varied

SOURCE: ADC Radar

ACTION OR COMMENTS: Believed to be due to weather phenomena

DESCRIPTION OF INCIDENT: Great Lakes Region Air Defense Command radar stations
tracked fast moving objexts across lichigan am Wisc.