Right now
The most recent data we hold from NOAA arrived 8 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 20 May 2026 at 23:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 116 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 20 at 7:19PM EDT until May 20 at 7:30PM EDT by NWS Upton NY
Urban PEI: 6,191,727 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- July 10, 2026 · score 52 · 2.4 km
- July 19, 2026 · score 52 · 6.7 km
- July 18, 2026 · score 52 · 6.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 52 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) | 52 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 40.2344, -73.9709 |
| Nearest City | Asbury Park (4 km) |
| Urban exposure index (PEI) | 6.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T23:19:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.aabacae448e4c2526f3bf985ba547315 |
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: 2026-05-20T23:19:00.000Z.
First archived: 2026-05-20T23:27:08.495Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kings, NY; Nassau, NY; Queens, NY; Ocean, NJ |
| Headline | Severe Thunderstorm Warning issued May 20 at 7:19PM EDT until May 20 at 7:30PM EDT by NWS Upton NY |
| Expires | 2026-05-20T19:30:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.aabacae448e4c2526f3bf985ba547315d9cdba72.002.1","noaa_urn:oid:2.49.0.1.840.0.8fe712bcc379d13d6d48a57bd3d060cb77a244a2.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 62 |
| Iem Unit | MPH |
| Iem City | Keyport |
| Iem County | Monmouth |
| Iem State | NJ |
| Iem Wfo | PHI |
| Iem Remark | Weather station on dock. |
| MergedSources | [{"id":"iem_D_40.610_-73.970_1779316740000","source":"iem","severity":"low","severityValue":25,"timestamp":1779316740000,"latitude":40.61,"longitude":-73.97},{"id":"iem_G_40.440_-74.200_1779316020000","source":"iem","severity":"low","severityValue":25,"timestamp":1779316020000,"latitude":40.44,"longitude":-74.2}] |
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 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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