Right now
The most recent data we hold from NOAA arrived 3 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 20:30 UTC. It is kept here as a record.
It is the 4th strongest of the 63 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 5 July 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 6 at 3:35PM EDT until July 6 at 4:30PM EDT by NWS Mount Holly NJ
Urban PEI: 49,516 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- July 21, 2026 · score 28 · 2.8 km
- July 23, 2026 · score 34 · 9.0 km
- June 22, 2026 · score 58 · 15.2 km
How we know
5 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 | 0.88/1 |
| Coordinates | 38.3495, -76.0038 |
| Nearest City | Salisbury (35 km) |
| Urban exposure index (PEI) | 49.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T19:35:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.104144499a0cafc34ea7717f0f8e2a5c |
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: 2026-07-06T19:35:00.000Z.
First archived: 2026-07-06T19:39:09.598Z. 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 | Kent, DE; Sussex, DE; Lancaster, VA; Middlesex, VA; Richmond, VA |
| Headline | Severe Thunderstorm Warning issued July 6 at 3:35PM EDT until July 6 at 4:30PM EDT by NWS Mount Holly NJ |
| Expires | 2026-07-06T16:30:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.104144499a0cafc34ea7717f0f8e2a5cde139a0d.001.1","noaa_urn:oid:2.49.0.1.840.0.bf7a65ac0f3203e6c31c9fcaf7a4badbfa0a2576.001.1"] |
| Iem TypeSummary | F |
| Iem City | 1 WNW Lexington Park |
| Iem County | St. Marys |
| Iem State | MD |
| Iem Wfo | LWX |
| Iem Remark | FDR Boulevard closed at MD-246 Great Mills Road. Six inches of water flowing across the roadway. |
| MergedSources | [{"id":"iem_M_38.330_-76.470_1783358040000","source":"iem","severity":"low","severityValue":25,"timestamp":1783358040000,"latitude":38.33,"longitude":-76.47},{"id":"iem_D_37.910_-76.470_1783359900000","source":"iem","severity":"low","severityValue":25,"timestamp":1783359900000,"latitude":37.91,"longitude":-76.47},{"id":"iem_M_38.040_-76.320_1783362840000","source":"iem","severity":"low","severityValue":25,"timestamp":1783362840000,"latitude":38.04,"longitude":-76.32},{"id":"iem_F_38.260_-76.460_1783359120000","source":"iem","severity":"low","severityValue":25,"timestamp":1783359120000,"latitude":38.26,"longitude":-76.46}] |
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.
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