Right now
The most recent data we hold from NOAA arrived 2 minutes 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 March 2026 at 18:00 UTC. It is kept here as a record.
It is one of only 2 we have recorded within 20 km of this point since 12 March 2026.
What the source measured
NOAA reported: Flood Warning issued March 12 at 4:44PM PDT until March 14 at 1:12PM PDT by NWS Portland OR
An estimated 1,765,629 people live within 50 km of this point.
Nearby, since 12 March 2026
- March 13, 2026 · score 52 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 out of 100, at 77 % 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) | 52 / 100 |
| Our confidence | 77% |
| Coordinates | 45.4822, -122.4818 |
| Nearest City | Gresham (4 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T23:44:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood-Warning_noaa_urn-oid-2_49_0_1_840_0_3b542153c4d60afd7b432bc4293d8a27 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clackamas, OR; Multnomah, OR; Multnomah, OR |
| Headline | Flood Warning issued March 12 at 4:44PM PDT until March 14 at 1:12PM PDT by NWS Portland OR |
| Expires | 2026-03-13T11:00:00-07:00 |
| SenderName | NWS Portland OR |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3b542153c4d60afd7b432bc4293d8a27ca67962f.001.1","noaa_urn:oid:2.49.0.1.840.0.328bbbe1b0344257390f83da4e1393ca20f37926.001.1"] |
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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