Right now
The most recent data we hold from NOAA arrived 38 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 6 July 2026 at 06:00 UTC. It is kept here as a record.
It is the 151st strongest of the 237 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 5 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued July 6 at 12:48AM EDT until July 6 at 1:00AM EDT by NWS Mount Holly NJ
Urban PEI: 39,403 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- August 27, 2026 · score 34 · 0.0 km
- August 8, 2026 · score 34 · 0.0 km
- July 22, 2026 · score 46 · 0.0 km
How we know
8 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 39.0000, -75.5000 |
| Nearest City | Dover (18 km) |
| Urban exposure index (PEI) | 39.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T04:48:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.0651718a8f1b3d427564ca5ad0ce5ce9 |
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: 2026-07-06T04:48:00.000Z.
First archived: 2026-07-06T04:56:19.403Z. 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 | 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; Salem, NJ; Berks, PA; Bucks, PA; Chester, PA; Delaware, PA; Lehigh, PA; Montgomery, 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 |
| Headline | Severe Thunderstorm Watch issued July 6 at 12:48AM EDT until July 6 at 1:00AM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-06T02:00:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0651718a8f1b3d427564ca5ad0ce5ce9d150b4e4.001.1","noaa_urn:oid:2.49.0.1.840.0.0651718a8f1b3d427564ca5ad0ce5ce9d150b4e4.002.1"] |
| Iem TypeSummary | D |
| Iem City | Smyrna |
| Iem County | Kent |
| Iem State | DE |
| Iem Wfo | PHI |
| Iem Remark | Several trees down in Smyrna with a couple of them blocking roadways. |
| MergedSources | [{"id":"iem_F_39.650_-75.520_1783308780000","source":"iem","severity":"low","severityValue":25,"timestamp":1783308780000,"latitude":39.65,"longitude":-75.52},{"id":"iem_M_39.480_-75.540_1783308900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783308900000,"latitude":39.48,"longitude":-75.54},{"id":"iem_D_39.040_-75.970_1783292400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783292400000,"latitude":39.04,"longitude":-75.97},{"id":"iem_G_39.480_-75.540_1783309500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783309500000,"latitude":39.48,"longitude":-75.54},{"id":"iem_M_39.210_-76.250_1783303200000","source":"iem","severity":"low","severityValue":25,"timestamp":1783303200000,"latitude":39.21,"longitude":-76.25},{"id":"iem_M_39.480_-75.540_1783309500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783309500000,"latitude":39.48,"longitude":-75.54},{"id":"iem_D_39.300_-75.610_1783293480000","source":"iem","severity":"low","severityValue":25,"timestamp":1783293480000,"latitude":39.3,"longitude":-75.61}] |
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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