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Phenomena Almanac
When nature does cool shit
Nature is constantly doing cool shit we rarely see, or barely think about. This almanac documents where and when — the exact dates where an exact date exists, and an honest likelihood where it doesn't.
What the markers mean
A hollow marker is live-monitored — it appears only while a feed flags it. Solid markers have calculated dates, known years out.
Shape is the category, fill is what kind of prediction sits behind it. Tap a marker for the detail card; tap an eclipse to draw its actual path of totality, then tap anywhere along it for the local duration. The filmstrip along the bottom runs in date order — tapping a card flies the globe to it.
Arrow keys move between markers and turn the planet when you reach the horizon, so every marker is reachable without a mouse.
Eclipses are computed here in the browser from Besselian elements, not looked up — which is why you can click a point and get a real duration. Meteor showers, coral spawning and the sky-event calendar are computed the same way. Aurora and volcanic activity are live feeds (NOAA SWPC, USGS, Smithsonian GVP) and are only as current as their publishers.
Not set
Used for "near me", local times, and the sunset line.
Drops phenomena outside your hemisphere.
Stops the globe's camera moves from animating.
Nothing here leaves your device.
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Updated on load · calculated events run 10 years from today
Gold events are calculated in advance, from orbital mechanics or known biological triggers, and they land on these dates whether or not any sensor confirms it today. Teal events are pulled live from public monitoring feeds and reflect whatever those feeds most recently reported. Scroll up for the interactive map, or keep going for the full calendar and timeline below.
Pulled from NOAA SWPC's public planetary K-index forecast on page load. Kp ≥5 means a geomagnetic storm is underway or expected — the aurora becomes visible well outside the Arctic/Antarctic circle.
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Current status only, not a forecast — checked once per load, not against a lead time. Only while this tab stays open.
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Checked against today's nowcast and the 1–3 day forecast — only while this tab stays open.
Covers San Diego only — no equivalent feed for Puerto Rico, the Maldives or Jervis Bay.
SCCOOS California HAB Bulletin →
NOAA HABSOS map (Gulf / Southeast) →
Global lightning networks update continuously but aren't practical to embed here as a filtered feed — check directly, filtered to Lake Maracaibo (9.75°N, 71.65°W) for Catatumbo, or any active volcano for eruption-linked lightning:
LightningMaps.org live global map →
WWLLN Global Volcanic Lightning Monitor →