Right now
The most recent data we hold from NOAA arrived 13 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 12 March 2026 at 09:00 UTC. It is kept here as a record.
It is one of only 3 we have recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Watch issued March 11 at 4:19PM PDT until March 14 at 5:00AM PDT by NWS Portland OR
An estimated 1,361,700 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 48 · 8.9 km
- March 15, 2026 · score 52 · 15.3 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 78 % 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 | 78% |
| Coordinates | 45.4035, -123.2228 |
| Nearest City | Forest Grove (16 km) |
| Population Exposed | 1.4M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T01:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood-Watch_noaa_urn-oid-2_49_0_1_840_0_f1ef0dfac33399753327f0225df8c2f4 |
Score Breakdown
Technical Details
| Event | Flood Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Tillamook County Coast; North Oregon Coast Range Lowlands; East Central Willamette Valley; Inner Portland Metro |
| Headline | Flood Watch issued March 11 at 4:19PM PDT until March 14 at 5:00AM PDT by NWS Portland OR |
| Expires | 2026-03-12T02:00:00-07:00 |
| SenderName | NWS Portland OR |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f1ef0dfac33399753327f0225df8c2f406871fa4.001.1","noaa_urn:oid:2.49.0.1.840.0.f1ef0dfac33399753327f0225df8c2f406871fa4.002.1","noaa_urn:oid:2.49.0.1.840.0.d9c7ac4e5a729f79c69afb4fc36b5cc3f92129f2.002.1","noaa_urn:oid:2.49.0.1.840.0.d9c7ac4e5a729f79c69afb4fc36b5cc3f92129f2.001.1"] |
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.
Want to know when something happens near Forest Grove?
Calamity.live data shows a weather event with CalamityScore 52/100, near Forest Grove (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.