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CA19901102_A ·The 1990 season ·Canada

Alvena

2 November 1990·Alvena·wheat·11 ft (3.4 m) across

Plate — one of 1 image on this record · 575×415 px every image →

Reported 2 November 1990 in wheat at Alvena. One archive recorded it, so nothing about it can be cross-checked.

The record

date
2 November 1990 day precision
place
Alvena, Canada no other name or place string on any source record · name from the cropcirclecenter.com name
crop
wheat
size
11 ft (3.4 m) acrossas written: 3,5 m | 11 ft3 m across100 m
recorded by
cc · cropcirclecenter.com
images
1 · 1 diagram
writing
nothing was written about this formation on any source

Where exactly

20 km
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)

sitekindcreditbasiscaptionsizefilesource page
cc diagram cropcirclecenter.com / Bertold Zugelder site default 575×415
40.9 KiB image/jpeg
image 854cedb04998 https://www.cropcirclecenter.com/date/1990/199011.html

Date

2 November 1990, to day precision. What a source records is the day a formation was found and reported.

reported by
cc: 2 November 1990
weekday
Friday, day 306 of the year, ISO week 44, autumn
sun and moon
40.2 days after the September equinox; moon full (100% lit), on 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
siteplacecountycountrygrid refwhat3wordsfix
ccSaskatchewanCanada 52.516770, -106.017850 place / geonames

Crop and size

crop
wheat (cc: wheat)
diameter
11 ft (3.4 m)
size as written
3,5 m | 11 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 CA19901102_A
name Alvena
location
county Saskatchewan
country Canada
date reported 1990-11-02
date precision day
crop wheat
size 3,5 m | 11 ft
diameter (ft) 11
grid reference
what3words
map link
credits cropcirclecenter.com / Bertold Zugelder
source page https://www.cropcirclecenter.com/date/1990/199011.html
link to the entity singleton
decided by none on 2026-09-11
warnings no_formation_page
record cc/5111ca4f6e78e…
raw record view: /formation/cc/5111ca4f6e78eab82c8ad72eb111ebfdc9df8f2664a3504055a094d30376f45e 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. 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.

diagramrotational symmetryelementsringsmirrorfill
cc 854cedb0 ≈ 2-fold score 0.972 2 1 0.996 0.7515

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 854cedb0— 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
Gulf Breeze November 1990, Gulf Breeze
next
Tully December 1990, Tully
previous in CA
Alvena November 1990
next in CA
Fort Lawrence 3 March 1991
same day
no other formation is dated this day
within 7 days and 25 km
Alvena November 1990, 0 m away · Alvena November 1990, 0 m away

In place

The nearest formations the archive can place.

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/CA19901102_A.json · row in index/manifest.jsonl
input digests
entity c26c289adc13 · images ee507d18205f · texts 4f53cda18c2b · geo e5ed83317d43