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Atmospheric7 daysopen

Atmospheric: 68% chance of an NWS Severe-or-higher weather alert within 437 km of Riyadh, Saudi Arabia in the next 7 days.

Probability

68%

Interval

59–77%

Opens

2026-10-01 22:00 UTC

Closes

2026-10-08 22:00 UTC

Resolution rule

Fixed at publication time; this is what the outcome is graded against.

kind
event_in_window
domain
atmospheric
metric
severity
description
Resolves MATCHED when an outcome event in the atmospheric domain occur between 2026-10-01T22:00:33.539Z and 2026-10-08T22:00:33.539Z, within 437 km of 25.0695, 43.6827, meeting or exceeding 68. Otherwise EXPIRED_MISS at window close.
min intensity
68
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.