Right now
The most recent data we hold from NOAA arrived 3 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 13 May 2026 at 17:45 UTC. It is kept here as a record.
No stronger detection stands among the 5 recorded within 20 km of this point since 13 May 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Dust Storm Warning issued May 13 at 10:09AM PDT until May 13 at 10:45AM PDT by NWS Spokane WA
Urban PEI: 380,696 within a heuristic 50 km radius; not unique people.
Nearby, since 13 May 2026
- May 13, 2026 · score 43 · 0.0 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 47.4340, -117.3620 |
| Nearest City | Spokane (26 km) |
| Urban exposure index (PEI) | 380.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T17:09:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8097f30febfe26baa8bf0d81ef7f3a5255083379.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-13T17:09:00.000Z.
First archived: 2026-05-13T17:38:32.021Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Dust Storm Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Spokane, WA |
| Headline | Dust Storm Warning issued May 13 at 10:09AM PDT until May 13 at 10:45AM PDT by NWS Spokane WA |
| Expires | 2026-05-13T10:45:00-07:00 |
| SenderName | NWS Spokane WA |
| HasExactCoords | true |
| Iem TypeSummary | 2 |
| Iem City | 1 NNW Spangle |
| Iem County | Spokane |
| Iem State | WA |
| Iem Wfo | OTX |
| Iem Remark | US-195 closed at at MP 80 due to multiple collisions due to a dust storm. |
| MergedSources | [{"id":"iem_2_47.440_-117.390_1778691180000","source":"iem","severity":"low","severityValue":25,"timestamp":1778691180000,"latitude":47.44,"longitude":-117.39}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Review the area, threshold and delivery channel in your account.
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