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 17 March 2026 at 01:45 UTC. It is kept here as a record.
It is the 7th strongest of the 58 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 16 at 9:03PM EDT until March 16 at 9:45PM EDT by NWS Baltimore MD/Washington DC
An estimated 483,764 people live within 50 km of this point.
Nearby, since 17 March 2026
- March 17, 2026 · score 43 · 2.8 km
- July 7, 2026 · score 37 · 5.9 km
- August 10, 2026 · score 43 · 6.4 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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 | 88% |
| Coordinates | 37.5405, -77.0496 |
| Nearest City | Highland Springs (25 km) |
| Population Exposed | 483.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T01:03:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.503b301d015791513e96efa0e62605d1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anne Arundel, MD; Calvert, MD; Charles, MD; Prince Georges, MD; St. Marys, MD; Caroline, VA; Charles City, VA; Essex, VA; Hanover, VA; Henrico, VA; James City, VA; King and Queen, VA; King William, VA; New Kent, VA; Prince George, VA; Richmond, VA; Surry, VA; Sussex, VA; Westmoreland, VA; York, VA; City of Williamsburg, VA; Charles, MD; Fauquier, VA; King George, VA; Prince William, VA; Spotsylvania, VA; Stafford, VA; City of Fredericksburg, VA and 3 more areas |
| Headline | Severe Thunderstorm Warning issued March 16 at 9:03PM EDT until March 16 at 9:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-03-16T21:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.503b301d015791513e96efa0e62605d194445796.001.1","noaa_urn:oid:2.49.0.1.840.0.9004be803624aab16711a3e9db72611e4238a403.002.1","noaa_urn:oid:2.49.0.1.840.0.4cb53a52530853df2f1cda1b6a8890c21802b036.002.1","noaa_urn:oid:2.49.0.1.840.0.3000d08216b12e3a71a2185b5e554d07ec8f75ed.001.1","noaa_urn:oid:2.49.0.1.840.0.b3d164a29681bb254af670d2f6739826a4f2b95e.002.1","noaa_urn:oid:2.49.0.1.840.0.08f2495f6c0c687568d138380a039da365de88df.001.1"] |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | 2 WSW Short Pump |
| Spc County | Henrico |
| Spc State | VA |
| Spc Comments | Tree down. Time estimated from radar. (AKQ) |
| Iem TypeSummary | M |
| Iem Magnitude | 47 |
| Iem Unit | MPH |
| Iem City | 2 S Deltaville |
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 Highland Springs?
Calamity.live data shows a weather event with CalamityScore 43/100, near Highland Springs (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.