Space weather24 hourspending
Space weather: 65% chance of geomagnetic activity reaching Kp 5 or higher within 790 km of Missouri, Iowa and 2 more, United States in the next 24 hours.
Probability
65%
Interval
57–73%
Opens
2026-09-30 10:00 UTC
Closes
2026-10-01 10:00 UTC
Resolution rule
Fixed at publication time; this is what the outcome is graded against.
- kind
- event_in_window
- domain
- spaceweather
- metric
- kp
- description
- Resolves MATCHED when an outcome event in the spaceweather domain occur between 2026-09-30T10:00:33.581Z and 2026-10-01T10:00:33.581Z, within 790 km of 38.881, -91.1482, meeting or exceeding 5. Otherwise EXPIRED_MISS at window close.
- min intensity
- 5
- min event count
- 1
Outcome
The window is still open. Tremor grades this automatically against independently ingested outcome events once it closes — the probability above is never revised.
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Tremor publishes probabilities, not warnings, and is not an emergency service. For official alerts follow USGS, NOAA/NWS, NASA SWPC or your national authority.