Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 21 July 2026 at 23:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Flash Flood Warning issued July 21 at 3:53PM EDT until July 21 at 7:00PM EDT by NWS Albany NY
Urban PEI: 5,205,752 within a heuristic 50 km radius; not unique people.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 41.2287, -74.0358 |
| Nearest City | New City (10 km) |
| Urban exposure index (PEI) | 5.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T19:53:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.5cc8b78d674185056fcd48e69f81151e |
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: 2026-07-21T19:53:00.000Z.
First archived: 2026-07-21T20:00:04.434Z. 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 | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Dutchess, NY; Ulster, NY; Morris, NJ; Bergen, NJ; Bronx, NY; New York, NY; Westchester, NY and 4 more areas |
| Headline | Flash Flood Warning issued July 21 at 3:53PM EDT until July 21 at 7:00PM EDT by NWS Albany NY |
| Expires | 2026-07-21T19:00:00-04:00 |
| SenderName | NWS Albany NY |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.5cc8b78d674185056fcd48e69f81151e2ee69280.001.1","noaa_urn:oid:2.49.0.1.840.0.09f87ad36671ae44019a3d186017d48fa40f0bd6.001.1","noaa_urn:oid:2.49.0.1.840.0.aeb099ea7ab661a652a2f1229bca7403a70ad55b.001.1","noaa_urn:oid:2.49.0.1.840.0.b0ef6fcf6aafa17ce5a0bb851b3f2f719f8b98c9.001.1","noaa_urn:oid:2.49.0.1.840.0.8f2a5d78aa0e63a8239c1a12541b92f3f9144c5d.001.1","noaa_urn:oid:2.49.0.1.840.0.8b322d9b64c3bd27e94ae01b96c72e8b5c97166c.001.1","noaa_urn:oid:2.49.0.1.840.0.62e57cace57768369f29fe2a609372c4cbb37f03.001.1"] |
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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