Right now
The most recent data we hold from NOAA arrived 2 hours 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.
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