#undulatus

Live, measured metrics for the hashtag #undulatus from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

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1
Uses / 7 days
Mastodon
1
Accounts / 7 days
Mastodon
11
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 11
0
Avg reactions / post
Mastodon · last 11
Reddit posts / month
Reddit search
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-08-02 09:35 UTC
1
07-27
0
07-28
0
07-29
0
07-30
0
07-31
0
08-01
0
08-02

1 uses by 1 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · fosstodon.org (Mastodon public search API) · fetched 2026-08-02 09:35 UTC

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-08-02 09:35 UTC

Everything below is measured over the latest 11 public posts (spanning ~32464 hours).

Posting hours (UTC)

00:0012:0023:00

Languages: English (6) · Dutch (2) · German (2)

Avg boosts / post: 1.3

Top of the latest posts

  • Is it a #bird is it a #drone is it a modern AI driven phone #camera making things up - AI is ruining everything imo it's purely to remove us further from the natural world #observe #nature #photography #undulatus clouds (no way of Identifyi

    Life in Clouds 🏴‍☠️🏳️‍🌈🌏⛅️🍃🦠💧@[email protected]022026-07-27 01:56 UTCView post →
  • Yesterday's mystery #cloud has been ID'd as #cirrocumulus (or perhaps altocumulus) but in any case of the rather rare #undulatus variety, with the waves caused by wind shear at different altitudes: https://cloudappreciationsociety.org/octob

    Daniel Fischer@[email protected]002026-06-19 17:01 UTCView post →
  • Wat een bijzondere structuren in de lucht vanavond! 😍 #ribbelwolken #wasbordwolken #Altocumulus #Undulatus

    Helga van Leur ☀️@[email protected]022026-06-17 20:32 UTCView post →

What “undulatus” means

Wikipedia

The altostratus undulatus is a type of altostratus cloud with signature undulations within it. These undulations may be visible, but frequently they are indiscernible to the naked eye. These formations will generally appear in the early stages of destabilizing return flows, especially over the southern plains of the United States, when the surface temperature is still relatively cool. The wavy strips of clouds are generally near an inversion surface.

Altostratus undulatus cloud” on Wikipedia (CC BY-SA) →

#undulatus across platforms

every network with a public tag surface

Follow #undulatus straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.

Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/undulatus