Right now
The most recent data we hold from NOAA arrived 6 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 8 August 2026 at 01:45 UTC. It is kept here as a record.
It is the 20th strongest of the 69 detections recorded within 20 km of this point since 6 June 2026. Another comparable one was recorded here earlier the same day. 8 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 7 at 9:35PM EDT until August 7 at 9:45PM EDT by NWS Mount Holly NJ
An estimated 2,218,437 people live within 50 km of this point.
Nearby, since 6 June 2026
- June 12, 2026 · score 52 · 5.5 km
- June 11, 2026 · score 46 · 7.6 km
- June 6, 2026 · score 52 · 9.5 km
How we know
Confirmed by 30 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 89 % 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 | 89% |
| Coordinates | 41.2599, -73.3519 |
| Nearest City | Wilton (10 km) |
| Population Exposed | 2.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-08T01:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.57201abbd40853c1f6415113dcaca801 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Monmouth, NJ; Litchfield, CT; Fairfield, CT; New Haven, CT; Putnam, NY; Westchester, NY and 1 more areas |
| Headline | Flash Flood Warning issued August 7 at 9:35PM EDT until August 7 at 9:45PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-07T21:45:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.57201abbd40853c1f6415113dcaca801a0b2668e.001.1","noaa_urn:oid:2.49.0.1.840.0.cab29635552de7b985fa97c7e8d03fe972f8c615.001.1","noaa_urn:oid:2.49.0.1.840.0.7e03e0b9ff176e6cdbcbc00b8669712882a3aff3.001.1","noaa_urn:oid:2.49.0.1.840.0.6db73ee4666f48ba9dc776f049b55ba798fc6f55.001.1"] |
| Iem TypeSummary | F |
| Iem City | 1 NNW Teterboro Airport |
| Iem County | Bergen |
| Iem State | NJ |
| Iem Wfo | OKX |
| Iem Remark | NJ 17 southbound is closed at US 46 due to flooding. |
| MergedSources | [{"id":"iem_F_40.990_-73.910_1786143600000","source":"iem","severity":"low","severityValue":25,"timestamp":1786143600000,"latitude":40.99,"longitude":-73.91},{"id":"iem_D_41.660_-72.780_1786149000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786149000000,"latitude":41.66,"longitude":-72.78},{"id":"iem_F_41.090_-73.950_1786143600000","source":"iem","severity":"low","severityValue":25,"timestamp":1786143600000,"latitude":41.09,"longitude":-73.95},{"id":"iem_D_40.690_-73.790_1786144380000","source":"iem","severity":"low","severityValue":25,"timestamp":1786144380000,"latitude":40.69,"longitude":-73.79},{"id":"iem_H_41.010_-74.010_1786137000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786137000000,"latitude":41.01,"longitude":-74.01},{"id":"iem_D_41.050_-74.050_1786137900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786137900000,"latitude":41.05,"longitude":-74.05},{"id":"iem_F_41.090_-74.020_1786141800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141800000,"latitude":41.09,"longitude":-74.02},{"id":"iem_D_41.690_-72.940_1786148280000","source":"iem","severity":"low","severityValue":25,"timestamp":1786148280000,"latitude":41.69,"longitude":-72.94},{"id":"iem_F_41.100_-74.040_1786140600000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140600000,"latitude":41.1,"longitude":-74.04},{"id":"iem_D_41.660_-72.810_1786149000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786149000000,"latitude":41.66,"longitude":-72.81},{"id":"iem_D_41.110_-73.970_1786138500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786138500000,"latitude":41.11,"longitude":-73.97},{"id":"iem_M_40.950_-73.400_1786143420000","source":"iem","severity":"low","severityValue":25,"timestamp":1786143420000,"latitude":40.95,"longitude":-73.4},{"id":"iem_M_40.660_-73.300_1786145100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786145100000,"latitude":40.66,"longitude":-73.3},{"id":"iem_D_41.080_-74.050_1786139400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786139400000,"latitude":41.08,"longitude":-74.05},{"id":"iem_M_40.900_-73.630_1786142520000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142520000,"latitude":40.9,"longitude":-73.63},{"id":"iem_D_41.600_-72.890_1786148340000","source":"iem","severity":"low","severityValue":25,"timestamp":1786148340000,"latitude":41.6,"longitude":-72.89},{"id":"iem_H_41.070_-74.010_1786137060000","source":"iem","severity":"low","severityValue":25,"timestamp":1786137060000,"latitude":41.07,"longitude":-74.01},{"id":"iem_H_41.050_-74.010_1786137000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786137000000,"latitude":41.05,"longitude":-74.01},{"id":"iem_D_40.830_-74.000_1786140000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140000000,"latitude":40.83,"longitude":-74},{"id":"iem_F_41.390_-73.460_1786145400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786145400000,"latitude":41.39,"longitude":-73.46},{"id":"iem_D_41.120_-73.990_1786140600000","source":"iem","severity":"low","severityValue":25,"timestamp":1786140600000,"latitude":41.12,"longitude":-73.99},{"id":"iem_D_41.610_-72.910_1786148100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786148100000,"latitude":41.61,"longitude":-72.91},{"id":"iem_F_41.080_-73.780_1786144800000","source":"iem","severity":"low","severityValue":25,"timestamp":1786144800000,"latitude":41.08,"longitude":-73.78},{"id":"iem_F_41.390_-73.460_1786146900000","source":"iem","severity":"low","severityValue":25,"timestamp":1786146900000,"latitude":41.39,"longitude":-73.46},{"id":"iem_F_41.380_-73.400_1786145400000","source":"iem","severity":"low","severityValue":25,"timestamp":1786145400000,"latitude":41.38,"longitude":-73.4},{"id":"iem_D_41.080_-74.040_1786138200000","source":"iem","severity":"low","severityValue":25,"timestamp":1786138200000,"latitude":41.08,"longitude":-74.04},{"id":"iem_H_41.100_-73.980_1786137720000","source":"iem","severity":"low","severityValue":25,"timestamp":1786137720000,"latitude":41.1,"longitude":-73.98},{"id":"iem_M_40.920_-73.730_1786141920000","source":"iem","severity":"low","severityValue":25,"timestamp":1786141920000,"latitude":40.92,"longitude":-73.73},{"id":"iem_F_40.870_-74.060_1786142100000","source":"iem","severity":"low","severityValue":25,"timestamp":1786142100000,"latitude":40.87,"longitude":-74.06}] |
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 Wilton?
Calamity.live data shows a weather event with CalamityScore 52/100, near Wilton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.