Right now
The most recent data we hold from NOAA arrived 1 minute 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 29 May 2026 at 05:01 UTC. It is kept here as a record.
No stronger detection stands among the 7 recorded within 20 km of this point since 14 March 2026 — 3 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued May 28 at 9:51PM PDT until May 28 at 10:00PM PDT by NWS Spokane WA
An estimated 380,696 people live within 50 km of this point.
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 90% |
| Coordinates | 47.6395, -117.5050 |
| Nearest City | Spokane (6 km) |
| Population Exposed | 380.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-29T04:51:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.3faae6b9eba04bea46498f87fb8fb1af |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Spokane, WA; Whitman, WA; Bonner, ID; Lincoln, WA |
| Headline | Flash Flood Warning issued May 28 at 9:51PM PDT until May 28 at 10:00PM PDT by NWS Spokane WA |
| Expires | 2026-05-28T22:01:00-07:00 |
| SenderName | NWS Spokane WA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3faae6b9eba04bea46498f87fb8fb1af28d3ca2b.001.1","noaa_urn:oid:2.49.0.1.840.0.bc648ed5c0280c555c5bad43dfe5d7f6d8ae72e8.001.1","noaa_urn:oid:2.49.0.1.840.0.95ca3455aece4f4c5e74d8fcff115c91a00b2124.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 54 |
| Iem Unit | MPH |
| Iem City | 1 W Millwood |
| Iem County | Spokane |
| Iem State | WA |
| Iem Wfo | OTX |
| MergedSources | [{"id":"iem_R_47.230_-117.070_1780023600000","source":"iem","severity":"low","severityValue":25,"timestamp":1780023600000,"latitude":47.23,"longitude":-117.07},{"id":"iem_D_47.600_-117.430_1780024200000","source":"iem","severity":"low","severityValue":25,"timestamp":1780024200000,"latitude":47.6,"longitude":-117.43},{"id":"iem_D_47.150_-116.950_1780023900000","source":"iem","severity":"low","severityValue":25,"timestamp":1780023900000,"latitude":47.15,"longitude":-116.95},{"id":"iem_G_47.690_-117.310_1780024500000","source":"iem","severity":"low","severityValue":25,"timestamp":1780024500000,"latitude":47.69,"longitude":-117.31}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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.
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