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 3 August 2026 at 13:00 UTC. It is kept here as a record.
No stronger detection stands among the 97 recorded within 20 km of this point since 12 June 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 20 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 3 at 5:55AM EDT until August 3 at 9:00AM EDT by NWS Boston/Norton MA
Urban PEI: 26,360,151 within a heuristic 50 km radius; not unique people.
Nearby, since 12 June 2026
- August 3, 2026 · score 66 · 5.8 km
- July 21, 2026 · score 52 · 6.6 km
- June 12, 2026 · score 52 · 7.5 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 66 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 | Critical |
| Calamity Score (ours) | 66 / 100 |
| Legacy data-support index | 0.87/1 |
| Coordinates | 41.0205, -74.0611 |
| Nearest City | Pearl River (6 km) |
| Urban exposure index (PEI) | 26.4M within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-08-03T09:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.09ddbfb9f0fc506fee15b65a911c8ea1 |
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: 2026-08-03T09:55:00.000Z.
First archived: 2026-08-03T09:59:24.334Z. 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 | Hartford, CT; Tolland, CT; Hampden, MA; Hampshire, MA; Essex, NJ; Hudson, NJ; Union, NJ; Bronx, NY; Kings, NY; Nassau, NY; New York, NY; Queens, NY; Richmond, NY; Hunterdon, NJ; Mercer, NJ; Morris, NJ; Somerset, NJ and 6 more areas |
| Headline | Flash Flood Warning issued August 3 at 5:55AM EDT until August 3 at 9:00AM EDT by NWS Boston/Norton MA |
| Expires | 2026-08-03T09:00:00-04:00 |
| SenderName | NWS Boston/Norton MA |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.09ddbfb9f0fc506fee15b65a911c8ea1125f67b5.001.1","noaa_urn:oid:2.49.0.1.840.0.f3a38665a1a423b7696ffd2b0fd56bac3f5bc244.001.1","noaa_urn:oid:2.49.0.1.840.0.3e0479d4367617d9c789870d02264ae9f2dd4d3e.001.1","noaa_urn:oid:2.49.0.1.840.0.7c3a68735b07a4d84f501a65510718924a0857be.002.1","noaa_urn:oid:2.49.0.1.840.0.260fdcd850d43d2eb35f6f44cbab3a92b25763ee.001.1","noaa_urn:oid:2.49.0.1.840.0.7a6e027e8981f702f3c385cd25e290e8901fca50.001.1","noaa_urn:oid:2.49.0.1.840.0.ebfa38880562e429fecb7622a2cc2b95bd0b4ab8.001.1","noaa_urn:oid:2.49.0.1.840.0.b8d6ef2645a5b76420918ae0da622a7da0dcceda.001.1","noaa_urn:oid:2.49.0.1.840.0.8f6be4575a8a10f25e65f2c523fb1d1a5665ce7b.001.1"] |
| Ogimet StationId | 72530 |
| Ogimet WindSpeed | 64 |
| Ogimet WindUnit | knots |
| Ogimet Temperature | 18.9 |
| Ogimet TemperatureUnit | C |
| Ogimet RawSynop | 08,03,05,51,AAXX 03064 72530 32966 03407 10189 20156 39894 40128 50003 90551 333 10228 20183 555 90306= |
| MergedSources | [{"id":"ogimet_72530_1785750914209","source":"ogimet","severity":"critical","severityValue":90,"timestamp":1785750914209,"latitude":40.8,"longitude":-74}] |
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.
Review the area, threshold and delivery channel in your account.
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