Mira Loma, CaliforniaApril 1955

Unidentified

Summary

On a spring day in April 1955, an observer in Mira Loma, California reported seeing a single object in the sky. The object was generally white with a reddish tint. It made no noise and left no visible vapor trail or exhaust. The witness watched as it drifted slowly to the south.

The Air Force's 4602d Air Intelligence Service Squadron investigated the sighting. They checked with weather stations in the area around Mira Loma. Those checks indicated that a weather balloon was aloft at the time the object was reported. The Air Force concluded the sighting was probably caused by that weather balloon.

The full case file, consisting of 8 pages as held by the National Archives, is reproduced below.

Reported location

Mira Loma, California

Date of incident

April 1955

State / country

CA / US

Page count

8 scanned pages

USAF evaluation

unidentified

Microfilm

T1206, Roll 22

Original case file scans

Original case file · scanned by NARAPage 1 of 8

View transcribed text

’ 4 Mi allen

: Gehl PROJECT 10073 RECORD CARD |
4 = FARE TER
1 1. DATE 2. LOCATION 12. CONCLUSIONS
3. Was Bolloan i
| So ARE aan 0 1 Mira Lomi, CAl¥aernia RR Lédboply Bellon

4 3. DATE-TIME CROUP 4. TYPE OF OBSERVATION ogc: Gd ik add

| BE tl Srsusd 0 Ground-Redar CR Ll LO

: GMT QZ. 2009: ais SESE 0 Air Visual 0 Air-Intercept Radar 0 Possibly Aircraft

{ 5 "PHOTOS BE NS TE RR 6. SOURCE 3 HUES RE RE = 0 Was Astronomical

4 0 Yes 0 Probably Astronomical
ee a TER eA 0 Possibly Astronomical
3 7. LENGTH OF ORSERVATION 8. NUMBER OF OBJECTS 9. COURSE oo) {py RR ADR EE STE
3 0 Insufficient Dota for Evaluation

: 0 Unknown

PTT RE RN | SSA (Se |), vo ISN 1S SOR
: 10. BRIEF SUMMARY OF SIGHTING i. COMMENTS

{ One object, generally white with a Probably balloon,
j reddish tint, no noise or visible Sighting investigated by 4602d :
E vapor trail or exhaust, was observed AISS and checks w/weather
: to drift to the south, stations in the area indicate
that sighting was caused by
| weather balloon which was aloft
; at designated time,
pr
; “
ATIC FORM 329 (REV 26 SEP 52)
; ¢
:

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Source: National Archives Catalog · NAID 28961709