July 4, 1947 — More than a dozen named police officers, deputies, and pilots watched discs cross the sky over Portland, Milwaukie, and Vancouver. thinkaboutitdocs.com.
THINK ABOUTIT UFO|UAP SIGHTINGS REPORT
1947: The Portland-Area Mass Sighting: Police, Pilots, and Deputies Watch the Sky
On the afternoon of July 4, 1947, five large discs crossed the sky over Portland and Milwaukie, Oregon, and Vancouver, Washington — and the witnesses who saw them weren’t scattered private citizens. They were on duty: sheriff’s deputies, harbor patrolmen, a radio newsman, a police sergeant, and three Portland police officers who were themselves licensed pilots. As one witness spotted the discs, radio calls alerted colleagues elsewhere in the metro area, who then watched the same or similar objects independently. Over the course of the afternoon, four separate waves of sightings — at 13:05, 14:00, 16:30, and 17:00 — swept the region, making this one of the largest concentrations of professionally credentialed, on-duty witnesses in the entire 1947 UFO wave.
Date: July 4, 1947
Sighting Time: 13:05, with further waves at 14:00, 16:30, and 17:00
Day/Night: Day
Location: Portland and Milwaukie, Oregon, and Vancouver, Washington
Urban or Rural: Urban
No. of Entity(‘s): Not Applicable
Entity Type: Not Applicable
Entity Description: Not Applicable
Hynek Classification: DD (Daylight Disc)
Duration: 30-90 seconds per individual sighting, across four separate waves over roughly four hours
No. of Object(s): Five large discs in the initial sighting; witness counts across the day ranged from a handful up to 20-30 objects
Description of the Object(s): Disc, hubcap, pie-pan, or half-moon-shaped objects, oscillating or wobbling in flight with sudden 90-degree turns
Shape/Size/Color of Object(s): Aluminum or chromium-colored, flashing brightly in the sun
Distance to Object(s): Not specified; witnesses observed from ground level across the metro area
Height & Speed: Altitudes ranging from as low as 1,000 feet to as high as 40,000 feet across the day’s sightings; high speed with no vapor trail and little to no noise
Number of Witnesses: At least fifteen named individuals, plus additional unnamed observers across four separate sighting waves
Special Features/Characteristics: Officer Kenneth A. McDowell noted pigeons visibly reacting to the objects; several witnesses independently reported a low humming sound; witnesses radioed each other in real time, allowing colleagues to look up and independently confirm sightings as they happened
Case Status: Unexplained
Source: J. Allen Hynek, The UFO Report, pp. 100-102; James McDonald, 1968; FOIA; Ted Bloecher, Report on the UFO Wave of 1947
Source Status: VERIFIED — an exceptional concentration of named, on-duty, professionally credentialed witnesses (police officers, sheriff’s deputies, harbor patrolmen, a radio newsman, licensed pilots) across multiple independent sighting waves, cited in J. Allen Hynek’s own published analysis.
Summary/Description: Radio newsman Frank Cooley of station KOIN; Clark County Sheriff’s Deputies Fred Krives and Clarence McKay; Sgt. John Sullivan; Portland Police Officer Kenneth A. McDowell; Harbor Patrol Capt. K.A. Prahn; Harbor Patrolmen A.T. Austad and K.C. Hoff; Portland Police Officers Earl J. Patterson, Walter A. Lissy, and Robert Ellis (themselves pilots); Oregon Highway Patrol Sgt. Claude Cross; and many others watched five large discs move at high speed, oscillating with sudden 90-degree turns, across a wide area, with further waves of sightings at 14:00, 16:30, and 17:00.
Related Cases: Occurred the same afternoon as Coast Guard yeoman Frank Ryman’s photograph in nearby Seattle, documented in its own full report on this archive, and the same day as Kenneth Arnold’s Mount Rainier sighting and the Fred Johnson Mount Adams corroboration — see this archive’s June and July 1947 monthly indexes.
Detailed Report
Beginning at approximately 13:05 on July 4, 1947, and recurring in distinct waves at 14:00, 16:30, and 17:00, residents and officials across Portland, Milwaukie, and Vancouver watched groups of disc-shaped objects move through the sky. The first wave involved five large discs, two heading south and three heading east, oscillating and wobbling as they flew, with sudden 90-degree course changes. The objects were aluminum or chromium-colored and flashed brightly as they turned in the sun. No vapor trail was reported, and witnesses described little to no accompanying sound.
What distinguishes this case from a typical single-witness sighting is the professional makeup of the observers and the way the sighting propagated. Radio newsman Frank Cooley, reporting for station KOIN, was among the first to spot the objects; as word spread by radio, officers elsewhere in the metro area began looking up and independently confirmed what they saw. Clark County Sheriff’s Deputies Fred Krives and Clarence McKay, together with Sgt. John Sullivan, reported a low humming sound and estimated 20-30 objects. Portland Police Officer Kenneth A. McDowell separately noted that pigeons in the area were visibly reacting to the objects’ presence. Harbor Patrol Capt. K.A. Prahn and Patrolmen A.T. Austad and K.C. Hoff observed from the waterfront. Portland Police Officers Earl J. Patterson, Walter A. Lissy, and Robert Ellis — all three licensed pilots — added their own professional aviation judgment to the sighting. Oregon Highway Patrol Sgt. Claude Cross rounded out the roster of named law-enforcement witnesses.
Altitude estimates varied enormously across the day’s sightings — from as low as 1,000 feet to as high as 40,000 feet — which likely reflects genuinely different objects or groups of objects rather than a single misjudged sighting repeated four times. Cooley himself later reported roughly a dozen discs at about 20,000 feet during one of the later waves. Each individual sighting lasted only 30 to 90 seconds, but the cumulative effect — a major metropolitan area producing dozens of credentialed witnesses across a single afternoon — makes this one of the most substantial mass-sighting cases of the entire wave.
RESEARCHER’S NOTES
Why This Case Is Taken Seriously
- Professionally credentialed, on-duty witnesses: Police officers, sheriff’s deputies, harbor patrolmen, and a radio newsman were all working at the time of the sighting — not off-duty civilians recalling a chance glance skyward.
- Real-time independent corroboration: Witnesses in different parts of the metro area confirmed the sighting as it happened, via radio, rather than comparing notes after the fact.
- Pilots among the witnesses: Three of the Portland police officers were themselves licensed pilots, giving their altitude and speed impressions added weight.
- A secondary physical indicator: Officer McDowell’s observation of pigeons reacting to the objects is a small but notable detail — an incidental environmental response that’s harder to fabricate or misremember than the sighting itself.
- Cited by J. Allen Hynek: The case appears in Hynek’s own published analysis, The UFO Report, giving it scientific-community visibility beyond UFO-specialist literature alone.
- What the record does not include: No photograph from this particular sighting (Ryman’s photo, the same afternoon in Seattle, is a separate case), and the wide variance in altitude estimates across witnesses suggests either multiple distinct events or significant estimation difficulty — this archive does not resolve that ambiguity.
Few cases in the 1947 wave combine this volume of credentialed, on-duty witnesses with real-time cross-corroboration across a major metropolitan area. This archive lists it as Unexplained, and treats it as one of the strongest mass-sighting cases in its entire chronological record.
Aluminum or chromium-colored, disc, hubcap, pie-pan, or half-moon-shaped, flashing in the sun, no vapor trail, little to no noise.
From the collective description given by the police officers, sheriff’s deputies, and pilots who witnessed the July 4, 1947 Portland-area mass sighting.
