This alert expired on 7 August 2026 at 22:36 UTC. It is kept here as a record.
It is the 610th strongest of the 852 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 238 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 7 at 6:26PM EDT until August 7 at 6:30PM EDT by NWS Mount Holly NJ
An estimated 28,028,750 people live within 50 km of this point.
Nearby, since 10 March 2026
- March 17, 2026 · score 52 · 5.6 km
- August 20, 2026 · score 52 · 6.9 km
- July 18, 2026 · score 52 · 7.1 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 88% |
| Coordinates | 40.7579, -73.9403 |
| Nearest City | Astoria (2 km) |
| Population Exposed | 28.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T22:26:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.fd9c8ddd5a9cb581a9ae5393251c4a04 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Burlington, NJ; Mercer, NJ; Middlesex, NJ; Monmouth, NJ; Ocean, NJ; Fairfield, CT; Bronx, NY; Kings, NY; Nassau, NY; Queens, NY; Westchester, NY; Bergen, NJ; Passaic, NJ; Rockland, NY; Westchester, NY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued August 7 at 6:26PM EDT until August 7 at 6:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-08-07T18:36:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fd9c8ddd5a9cb581a9ae5393251c4a04af7986d1.001.1","noaa_urn:oid:2.49.0.1.840.0.bcfe193b6b6f40681eca51b78e5bf9d63fcd2140.001.1","noaa_urn:oid:2.49.0.1.840.0.8f5f02c15b26c7ef61f96ea2f976eb3b2efdc2d8.001.1","noaa_urn:oid:2.49.0.1.840.0.f57d6316173aff59a00fedd5b3d2c1201e5e2ece.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 0.5 |
| Iem Unit | Inch |
| Iem City | 1 S Bardonia |
| Iem County | Rockland |
| Iem State | NY |
| Iem Wfo | OKX |
| Iem Remark | Report from mPING: Half-inch (0.50 in.). |
| MergedSources | [{"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_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_41.110_-73.970_1786138500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786138500000,"latitude":41.11,"longitude":-73.97},{"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}] |
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.
Want to know when something happens near Astoria?
Calamity.live data shows a weather event with CalamityScore 52/100, near Astoria (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.