Right now
The most recent data we hold from NOAA arrived 14 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 17 March 2026 at 03:15 UTC. It is kept here as a record.
It is the 9th strongest of the 216 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day. 134 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 10:56PM EDT until March 16 at 11:15PM EDT by NWS Mount Holly NJ
An estimated 150,786 people live within 50 km of this point.
Nearby, since 11 March 2026
- June 27, 2026 · score 43 · 4.4 km
- March 17, 2026 · score 63 · 9.9 km
- July 27, 2026 · score 43 · 10.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 83 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 83% |
| Coordinates | 39.0813, -75.3597 |
| Nearest City | Dover (16 km) |
| Population Exposed | 150.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T02:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.93d1beb62e3ffdf13a4d420519d8f395 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Kent, DE; Sussex, DE; New Castle, DE; Accomack, VA and 8 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 10:56PM EDT until March 16 at 11:15PM EDT by NWS Mount Holly NJ |
| Expires | 2026-03-16T23:15:00-04:00 |
| SenderName | NWS Mount Holly NJ |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.93d1beb62e3ffdf13a4d420519d8f3955daae49c.002.1","noaa_urn:oid:2.49.0.1.840.0.a569cb72a7166a857cb426b4bec5765b53b6c2c1.001.1","noaa_urn:oid:2.49.0.1.840.0.12ecd2bf815b79369d8e5e63d8a1809b30168b0c.001.1","noaa_urn:oid:2.49.0.1.840.0.55ddedb57186f4fb72b27a043eadd2e2feed881f.002.1","noaa_urn:oid:2.49.0.1.840.0.d2aa79e919477b834abe23b5fbed40bde65f53d4.001.1","noaa_urn:oid:2.49.0.1.840.0.31028921fd3f565cfb77d4c2ef1d46284f70aa54.001.1","noaa_urn:oid:2.49.0.1.840.0.7ace9372b172b21b5c8ed3c572e85a3a25b92626.002.1","noaa_urn:oid:2.49.0.1.840.0.11c0a846cf4724c67b87821979c8e6432ed01ed8.002.1","noaa_urn:oid:2.49.0.1.840.0.f77bfd8ef382029e7c1981ed1a1b6c5c33dc95c8.001.1","noaa_urn:oid:2.49.0.1.840.0.d08a243df67464c9879d5d45d67c528954477bc0.001.1","noaa_urn:oid:2.49.0.1.840.0.d90257767dc1d69a6bc694a080ed15926522b8a1.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 43 |
| Iem Unit | MPH |
| Iem City | 1 SE Indian Beach |
| Iem County | ANZ455 |
| Iem State | DE |
| Iem Wfo | PHI |
| Iem Remark | Dewey Beach mesonet. |
| MergedSources | [{"id":"iem_M_38.680_-75.060_1773697500000","source":"iem","severity":"low","severityValue":25,"timestamp":1773697500000,"latitude":38.68,"longitude":-75.06}] |
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.
Want to know when something happens near Dover?
Calamity.live data shows a weather event with CalamityScore 43/100, near Dover (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.