Right now
The most recent data we hold from NOAA arrived 4 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 18:15 UTC. It is kept here as a record.
It is the 14th strongest of the 51 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 21 July 2026. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 3 at 10:12AM EDT until August 3 at 2:15PM EDT by NWS Mount Holly NJ
Urban PEI: 3,097,686 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- August 3, 2026 · score 46 · 1.7 km
- June 11, 2026 · score 46 · 2.1 km
- May 20, 2026 · score 52 · 7.1 km
How we know
13 recorded sources include NOAA; independence is not established by this count.
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 | 0.92/1 |
| Coordinates | 41.0471, -73.2265 |
| Nearest City | Fairfield (11 km) |
| Urban exposure index (PEI) | 3.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-03T14:12:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.4c3363abd4db9e25119fcdb651efa8b9 |
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: 2026-08-03T14:12:00.000Z.
First archived: 2026-08-03T14:25:56.331Z. 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 | Atlantic, NJ; Cumberland, NJ; Salem, NJ; New Castle, DE; Burlington, NJ; Camden, NJ; Gloucester, NJ; Mercer, NJ; Salem, NJ; Bucks, PA; Delaware, PA; Montgomery, PA; Philadelphia, PA; Essex, NJ; Hudson, NJ; Union, NJ; Bronx, NY; Kings, NY; Nassau, NY; New York, NY; Queens, NY; Richmond, NY and 3 more areas |
| Headline | Flash Flood Warning issued August 3 at 10:12AM EDT until August 3 at 2:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-03T14:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4c3363abd4db9e25119fcdb651efa8b9f78f5dcc.001.1","noaa_urn:oid:2.49.0.1.840.0.22d5c3c73e7d6239f2206c5a37ab9c39690f88e8.001.1","noaa_urn:oid:2.49.0.1.840.0.68ec86a25b60139b95ad96a122ce96ab12d006cd.001.1","noaa_urn:oid:2.49.0.1.840.0.212dc243709f74d98b8e1b3b804151101cc36fc2.001.1","noaa_urn:oid:2.49.0.1.840.0.31e7a144fa523569e3ebddbf5ffb933f96d8e7d7.001.1","noaa_urn:oid:2.49.0.1.840.0.303764933f6801ce5d5e8caba7e8f17a36ff0760.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 2.15 |
| Iem Unit | Inch |
| Iem City | 3 NNE Gaylordsville |
| Iem County | Litchfield |
| Iem State | CT |
| Iem Wfo | ALY |
| Iem Remark | Cocorahs station CT-LT-51 South Kent 0.1 SE. |
| MergedSources | [{"id":"iem_O_41.100_-73.800_1785748740000","source":"iem","severity":"low","severityValue":25,"timestamp":1785748740000,"latitude":41.1,"longitude":-73.8},{"id":"iem_D_41.420_-73.910_1785745020000","source":"iem","severity":"low","severityValue":25,"timestamp":1785745020000,"latitude":41.42,"longitude":-73.91},{"id":"iem_F_40.980_-74.080_1785748320000","source":"iem","severity":"low","severityValue":25,"timestamp":1785748320000,"latitude":40.98,"longitude":-74.08},{"id":"iem_R_41.540_-73.220_1785754800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785754800000,"latitude":41.54,"longitude":-73.22},{"id":"iem_F_41.350_-73.950_1785748800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785748800000,"latitude":41.35,"longitude":-73.95},{"id":"iem_O_41.150_-73.730_1785753480000","source":"iem","severity":"low","severityValue":25,"timestamp":1785753480000,"latitude":41.15,"longitude":-73.73},{"id":"iem_F_41.350_-73.950_1785761100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785761100000,"latitude":41.35,"longitude":-73.95},{"id":"iem_O_41.040_-73.960_1785753840000","source":"iem","severity":"low","severityValue":25,"timestamp":1785753840000,"latitude":41.04,"longitude":-73.96},{"id":"iem_O_41.420_-73.910_1785745020000","source":"iem","severity":"low","severityValue":25,"timestamp":1785745020000,"latitude":41.42,"longitude":-73.91},{"id":"iem_R_41.600_-73.470_1785754800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785754800000,"latitude":41.6,"longitude":-73.47},{"id":"iem_R_41.510_-73.440_1785758400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785758400000,"latitude":41.51,"longitude":-73.44},{"id":"iem_R_41.680_-73.470_1785751200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785751200000,"latitude":41.68,"longitude":-73.47}] |
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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