Right now
The most recent data we hold from NOAA arrived 5 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 23:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 14 detections recorded within 20 km of this point since 14 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Watch issued March 13 at 5:11AM PDT until March 15 at 1:42PM PDT by NWS Pendleton OR
An estimated 197,465 people live within 50 km of this point.
Nearby, since 14 March 2026
- March 16, 2026 · score 43 · 0.0 km
- March 15, 2026 · score 43 · 14.0 km
- May 17, 2026 · score 48 · 18.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 79 % 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 | 79% |
| Coordinates | 46.0386, -118.6029 |
| Nearest City | Walla Walla (20 km) |
| Population Exposed | 197.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-14T21:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_1d41932fdce0e1833bab62a966e02afba6fb2f71_001_1 |
Score Breakdown
Technical Details
| Event | Flood Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington |
| Headline | Flood Watch issued March 13 at 5:11AM PDT until March 15 at 1:42PM PDT by NWS Pendleton OR |
| Expires | 2026-03-13T16:00:00-07:00 |
| SenderName | NWS Pendleton OR |
| HasExactCoords | true |
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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