Right now
The most recent data we hold from NOAA arrived 2 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 5 July 2026 at 03:00 UTC. It is kept here as a record.
It is the 5th strongest of the 188 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 3 July 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued July 4 at 3:30PM EDT until July 4 at 11:00PM EDT by NWS Upton NY
Urban PEI: 169,356 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- May 27, 2026 · score 43 · 5.9 km
- July 28, 2026 · score 67 · 6.5 km
- June 11, 2026 · score 37 · 9.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 39.2600, -75.7400 |
| Nearest City | Middletown (21 km) |
| Urban exposure index (PEI) | 169.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T19:30:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.1e1663a9fa3d77571f6c4cd944443a5d |
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: 2026-07-04T19:30:00.000Z.
First archived: 2026-07-04T21:06:46.870Z. 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 Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Essex, NJ; Passaic, NJ; Union, NJ; Orange, NY; Kent, DE; New Castle, DE; Sussex, DE; Caroline, MD; Kent, MD; Queen Anne's, MD; Talbot, MD; Atlantic, NJ; Burlington, NJ; Camden, NJ; Cape May, NJ; Cumberland, NJ; Gloucester, NJ; Hunterdon, NJ; Mercer, NJ; Middlesex, NJ; Monmouth, NJ; Morris, NJ; Ocean, NJ; Salem, NJ; Somerset, NJ; Sussex, NJ; Warren, NJ; Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA; Delaware Bay waters north of East Point NJ to Slaughter Beach DE; Delaware Bay waters south of East Point NJ to Slaughter Beach DE; Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 NM; Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 NM; Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 NM; Coastal waters from Great Egg Inlet to Cape May NJ out 20 NM; Coastal waters from Cape May NJ to Cape Henlopen DE out 20 NM; Coastal waters from Cape Henlopen to Fenwick Island DE out 20 NM and 2 more areas |
| Headline | Severe Thunderstorm Watch issued July 4 at 3:30PM EDT until July 4 at 11:00PM EDT by NWS Upton NY |
| Expires | 2026-07-04T23:00:00-04:00 |
| SenderName | NWS Upton NY |
| HasExactCoords | false |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1e1663a9fa3d77571f6c4cd944443a5d290f3e7b.001.1","noaa_urn:oid:2.49.0.1.840.0.eeb12aa6f8383a9df0dd3e74cbd1263285ed4d52.001.1","noaa_urn:oid:2.49.0.1.840.0.eeb12aa6f8383a9df0dd3e74cbd1263285ed4d52.002.1","noaa_urn:oid:2.49.0.1.840.0.4fc2819c830aaebb0e36fc2e675e58a050269445.002.1","noaa_urn:oid:2.49.0.1.840.0.4fc2819c830aaebb0e36fc2e675e58a050269445.001.1"] |
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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