Right now
The most recent data we hold from NOAA arrived 49 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, <1 km from here.
This alert is in force until 27 September 2026, 12:00 UTC.
It is one of only 2 we have recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Storm Warning issued September 27 at 4:41AM EDT until September 27 at 8:00AM EDT by NWS Upton NY
Urban PEI: 2,710,044 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- July 28, 2026 · 0.0 km
- July 4, 2026 · 0.0 km
- July 3, 2026 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 v5. 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 | 0.82/1 |
| Coordinates | 40.3000, -74.5000 |
| Nearest City | Princeton (15 km) |
| Urban exposure index (PEI) | 2.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-27T08:41:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5e82bb4596ad8dee28b95361752d274419777980.003.1 |
Physical priority index · v5. 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: 2026-09-27T08:41:00.000Z.
First archived: 2026-09-27T08:44:41.784Z. 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 | Storm Warning |
| MessageId | urn:oid:2.49.0.1.840.0.5e82bb4596ad8dee28b95361752d274419777980.003.1 |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Moriches Inlet NY to Montauk Point NY out 20 NM; Waters from Moriches Inlet NY to Montauk Point NY from 20 to 60 NM; Waters from Fire Island Inlet NY to Moriches Inlet NY from 20 to 60 NM; Waters from Sandy Hook NJ to Fire Island Inlet NY out 20 to 60 NM; Waters from Sandy Hook NJ to Manasquan Inlet NJ from 20 to 40 NM; Waters from Manasquan Inlet NJ to Little Egg Inlet NJ from 20 to 60 NM; Waters from Little Egg Inlet NJ to Great Egg Inlet NJ from 20 to 60 NM; Waters from Great Egg Inlet NJ to Cape May NJ from 20 to 60 NM |
| Headline | Storm Warning issued September 27 at 4:41AM EDT until September 27 at 8:00AM EDT by NWS Upton NY |
| Expires | 2026-09-27T08:00:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b6fa79156ac6166c77a74bd1add9d817c2de4fcd.003.1","noaa_urn:oid:2.49.0.1.840.0.f04fbe0bd0c705c42cc6c466680555d80ad49c22.004.1"] |
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.
Want to know when something happens near Princeton?