Alvena
CA19900831_B31 August 1990·Alvena·wheat
Reported 31 August 1990 in wheat at Alvena. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- 31 August 1990 (day precision)
- place
- Alvena
Canada - crop
- wheat
- size
- 12 ft (3.7 m) across
as written: 3,5 m | 12 ft - recorded by
- cc
- images
- 1 · 1 diagram
- writing
- nothing was written about this formation on any source
Also called
Nothing else. No other name or place string appears on any source record for this formation.
Where exactly
- coordinate
- 52.516770, -106.017850
- how it was got
- geonames
place, to within 2,000 m, from the cc record - on a map
- OpenStreetMap
No source publishes a coordinate for any formation in this archive. Every coordinate here is derived from the place name a source printed, and this page says how precise that makes it rather than rounding it away.
Images
1 image(s) on this formation's own source records. Click a tile for the full image; the bytes are fetched when you ask for them and are not stored in this page.
Diagrams (1)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc same file as tt |
diagram no diagram published by cropcirclecenter (“no diagram” tile) |
cropcirclecenter.com / Bertold Zugelder | site default | 575×415 66.1 KiB image/jpeg |
image 3461dff5df5d | https://www.cropcirclecenter.com/date/1990/199008.html |
Date
31 August 1990, to day precision. What a source records is the day a formation was found and reported.
- reported by
- cc: 31 August 1990
- weekday
- Friday, day 243 of the year, ISO week 35, summer
- sun and moon
- 22.8 days before the September equinox; moon waxing gibbous (79% lit), 4.6 days before the full moon (computed at 12:00 UTC; a reported date is a discovery date, not a creation date)
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 52.516770, -106.017850 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Saskatchewan | Canada | 52.516770, -106.017850 place / geonames |
Crop and size
- crop
- wheat (cc: wheat)
- diameter
- 12 ft (3.7 m)
- size as written
- 3,5 m | 12 ft
Source records
What each source published, side by side. A row whose values differ across the sources is marked: the archive prints the disagreement rather than choosing a winner.
| field | cc cropcirclecenter.com |
|---|---|
| id / slug | CA19900831_B |
| name | Alvena |
| location | |
| county | Saskatchewan |
| country | Canada |
| date reported | 1990-08-31 |
| date precision | day |
| crop | wheat |
| size | 3,5 m | 12 ft |
| diameter (ft) | 12 |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1990/199008.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | no_formation_page |
| record | cc/7e753e5bc370d… raw record view: /formation/cc/7e753e5bc370d3a6da6d070a4495d1b8c0170e11e8601f4d5d9471bace5e5fc6 in the preview app |
Texts
no text documents in the archive for this formation
Claims about this formation
no claim was extracted from a text about this formation
Geometry
1 diagram file(s) on this page, of which 1 is a shared cropcirclecenter placeholder rather than a drawing of this formation. measured from the diagram itself, and experimental: the extractor's rotational order is right on 88.8 % of a 200-diagram hand-labelled set against a gate of 90 %, so read a number here beside the picture rather than instead of it.
| diagram | rotational symmetry | elements | rings | mirror | fill |
|---|---|---|---|---|---|
| cc 3461dff5 (placeholder: digest) | ≈ 2-fold score 0.906 | 4 | 3 | 0.853 | 0.3434 |
Experimental, and marked ≈ wherever it appears. These numbers are read off a drawing, not off the field: the extractor's rotational order agrees with a hand-labelled set on 88.8 per cent of 200 diagrams against a gate of 90 per cent, its element count is within one on 97.5 per cent, and its ring count is not calibrated at all. Nothing in the analysis tree is derived from the rotational order while that gate is unmet.
Diagrams that look like these: cc 3461dff5— the nearest by perceptual hash. The whole archive is browsable by shape in the shape section, and this formation's own diagrams go straight into that grid: show them in the grid.
Neighbours
In time
- previous
- Beacon Hill 30 August 1990, Beacon Hill
- next
- Lockport 1 September 1990, Lockport
- previous in CA
- Niverville 29 August 1990
- next in CA
- Lockport 1 September 1990
- same day
- Alvena (Alvena) · JP19900831_A
- within 7 days and 25 km
- Alvena 31 August 1990, 0 m away, 0 day(s) apart
In place
The nearest formations the archive can place.
Alvena31 August 1990Alvena
0 m away, 1990-08-31 AlvenaNovember 1990
Alvena
0 m away, 1990-11
AlvenaNovember 1990Alvena
0 m away, 1990-11
Alvena2 November 1990Alvena
0 m away, 1990-11-02
Saskatoon6 August 1992Saskatoon
61.5 km away, 1992-08-06 SaskatoonAugust 1993
Saskatoon
61.5 km away, 1993-08
- same county and year
- none
Provenance
- entity built at
- 2026-09-11T19:20:39Z (derived from the link decisions, not from this build)
- index run ids
- none
- reviews applied
- none
- open queue pairs
- none
- entity record
- index/formations/CA19900831_B.json · row in index/manifest.jsonl
- input digests
- entity 6db4f71a543c · images cde4d9495e39 · texts 4f53cda18c2b · geo a6f71a3662a0