Severe Weather near Seabrook
This alert expired on 22 June 2026 at 21:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 791 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 22 at 5:11PM EDT until June 22 at 5:45PM EDT by NWS Baltimore MD/Washington DC
An estimated 5,421,534 people live within 50 km of this point.
Nearby, since 10 March 2026
- March 16, 2026 · score 52 · 2.3 km
- August 6, 2026 · score 52 · 2.6 km
- July 4, 2026 · score 52 · 4.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 66 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 66 / 100 |
| Our confidence | 81% |
| Coordinates | 38.9914, -76.8508 |
| Nearest City | Seabrook (2 km) |
| Population Exposed | 5.4M within 50 km |
| Impact Tier | catastrophic |
| Timestamp | 2026-06-22T21:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0d77a96a7d834f8fe87cca13564b925d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anne Arundel, MD; Baltimore, MD; Baltimore City, MD; District of Columbia, DC; Montgomery, MD; Prince Georges, MD; Arlington, VA; Fairfax, VA; City of Alexandria, VA; City of Fairfax, VA; City of Falls Church, VA |
| Headline | Severe Thunderstorm Warning issued June 22 at 5:11PM EDT until June 22 at 5:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-06-22T17:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0d77a96a7d834f8fe87cca13564b925d27174d07.001.1","noaa_urn:oid:2.49.0.1.840.0.0b10993a99f41926bf0ff1e1b776ae3d8b0aeb28.001.1"] |
| Ogimet StationId | 72503 |
| Ogimet WindSpeed | 84 |
| Ogimet WindUnit | knots |
| Ogimet Temperature | 22.8 |
| Ogimet TemperatureUnit | C |
| Ogimet RawSynop | 06,22,17,51,AAXX 22184 72503 12766 81113 10228 20172 30129 40142 58016 69901 91751 333 10228 20194 555 92218= |
| MergedSources | [{"id":"ogimet_72503_1782162039020","source":"ogimet","severity":"critical","severityValue":90,"timestamp":1782162039020,"latitude":38.9,"longitude":-77}] |
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 10 February 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 Seabrook?
Calamity.live data shows a weather event with CalamityScore 66/100, near Seabrook (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.