Alemeda, CaliforniaMay 1955

Unidentified

Summary

Project Blue Book, the U.S. Air Force's 22-year UFO investigation program, opened a case file on a sighting reported from Alemeda, California in May 1955. The full case file (4 scanned pages of witness statements, Air Force memoranda, and investigator notes) is reproduced below as held by the National Archives. The Air Force assigned this case to its broader investigation of unidentified aerial phenomena alongside ~12,600 other reports filed between 1947 and 1969. Citation: NARA Record Group 341, Microfilm Publication T1206, Roll 23.

Reported location

Alemeda, California

Date of incident

May 1955

State / country

CA / US

Page count

4 scanned pages

USAF evaluation

unidentified

Microfilm

T1206, Roll 23

Original case file scans

Original case file · scanned by NARAPage 1 of 4

Transcribed text

" .
] i |
s ; PROJECT 10073 RECORD CARD
: . DATE 2. LOCATION 12. CONCLUSIONS
; J Vas Balloon
| © 1.18 May 1988 |_Alemedn, California Lie JG BIAGEy Bellesy
: | 3. DATE-TIME GROUP 4. TYPE OF OBSERVATION Rx Possibly Balloon
i Local rege ae CAI ESS MXGround- Visual 0 Ground-Radar i Esa Morera
b GMT 20/03157 —— 1B AirVisual O Air-Intercept Radar |B Possibly Aircraft :
i 5. PHOTOS ~~ ———= 6. SOURCE 0 Wos Astronomical
4 O Yes : o Probably Astronomical
: BNo Civilian O Possibly Astronomicol
; ¥. LENGTH OF oBSERVAYION ~—  — | —-4@n
7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS | 9. COURSE TARE Cp). ER TN
3 A O Insufficient Dota for Evaluation
4 -— thirty minutes ; one LILO upward |
A ———— es ir te it eS te. BE — EET Ie Be toe oS ECR CEERI
: 10. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
| One round, silver object size of a Sighted object has al) the
: bea held at arms length, was obser- characteristics of a balloon,
ved for a period of 30 minutes, Objedt The length of sighting sub-
i Seemed to remain stationary and then stantiates the above, Resolved
to rise slowly and then faded from as A probably balloon,
view,
ATIC FORM 329 (REV 26 SEP 52)
4
1 y

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Source: National Archives Catalog · NAID 28962149

Connected across the archive

Programs and code names

Project Blue Book

Places

Alemeda Alemeda, CA California

Agencies

United States Air Force

Dates

1955 1955-05-01