This alert expired on 8 August 2026 at 19:33 UTC. It is kept here as a record.
It is the 3rd strongest of the 107 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 31 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 8 at 3:24PM EDT until August 8 at 3:30PM EDT by NWS Upton NY
An estimated 22,472,787 people live within 50 km of this point.
Nearby, since 12 March 2026
- July 21, 2026 · score 46 · 4.1 km
- August 7, 2026 · score 52 · 6.1 km
- August 6, 2026 · score 52 · 6.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 66 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 66 / 100 |
| Our confidence | 85% |
| Coordinates | 40.8376, -74.4536 |
| Nearest City | Parsippany (3 km) |
| Population Exposed | 22.5M within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-08-08T19:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0d1c8a92a53de2ccf0692afec08a28f1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Orange, NY; Middlesex, NJ; Monmouth, NJ; Somerset, NJ; Delaware, NY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued August 8 at 3:24PM EDT until August 8 at 3:30PM EDT by NWS Upton NY |
| Expires | 2026-08-08T15:33:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0d1c8a92a53de2ccf0692afec08a28f143b4bf45.001.1","noaa_urn:oid:2.49.0.1.840.0.00f302961d22867ffd73cc0df202fc201238944d.001.1","noaa_urn:oid:2.49.0.1.840.0.6c0f61b3abae2c4e6a51aeb6937fd725aa50add7.001.1","noaa_urn:oid:2.49.0.1.840.0.2b9ba0a4ce0cd19374c94f40ee31c6a2a5e8df16.002.1"] |
| Ogimet StationId | 72530 |
| Ogimet WindSpeed | 84 |
| Ogimet WindUnit | knots |
| Ogimet Temperature | 27.2 |
| Ogimet TemperatureUnit | C |
| Ogimet RawSynop | 08,08,17,51,AAXX 08184 72530 32666 23406 10272 20156 39927 40160 50001 91751 333 10272 20217 555 90818= |
| MergedSources | [{"id":"ogimet_72530_1786217163624","source":"ogimet","severity":"critical","severityValue":90,"timestamp":1786217163624,"latitude":40.8,"longitude":-74}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 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.
Calamity.live data shows a weather event with CalamityScore 66/100, near Parsippany (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.