This alert expired on 6 July 2026 at 00:00 UTC. It is kept here as a record.
No stronger detection stands among the 37 recorded within 20 km of this point since 16 March 2026 — 24 others scored the same. The last comparable one was on 4 July 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 5 at 7:28PM EDT until July 5 at 8:00PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,890,275 people live within 50 km of this point.
Nearby, since 16 March 2026
- July 6, 2026 · score 52 · 13.5 km
- March 17, 2026 · score 52 · 13.8 km
- March 16, 2026 · score 52 · 13.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 82 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 82% |
| Coordinates | 39.6233, -76.6427 |
| Nearest City | Hunt Valley (14 km) |
| Population Exposed | 1.9M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T23:28:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.cc4468ea4a58b346c4932adfab97ed46 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Anne Arundel, MD; Howard, MD; Montgomery, MD; Prince Georges, MD; Adams, PA; Cumberland, PA; Dauphin, PA; Lancaster, PA; Lebanon, PA; Perry, PA; York, PA; Kent, DE; New Castle, DE and 5 more areas |
| Headline | Severe Thunderstorm Warning issued July 5 at 7:28PM EDT until July 5 at 8:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-05T20:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.cc4468ea4a58b346c4932adfab97ed46cb677e31.001.1","noaa_urn:oid:2.49.0.1.840.0.f6971072d50bd7d2f7e7c25d4b6fb7efa70acf1e.001.1","noaa_urn:oid:2.49.0.1.840.0.9fda2e8ee3b6ca1e99ddd0452a904f2513233462.001.1","noaa_urn:oid:2.49.0.1.840.0.ad99424ad1b21fea81768d99a6ee38d190d7fadb.001.1","noaa_urn:oid:2.49.0.1.840.0.e51ee07e2962d54e751ed0c00184cedbabfdd788.001.1","noaa_urn:oid:2.49.0.1.840.0.01abf7d3c72da9a9bf9fc92c13c084595c142556.001.1","noaa_urn:oid:2.49.0.1.840.0.2a97c90608a8e39a60544c599acbbe8272d00371.001.1","noaa_urn:oid:2.49.0.1.840.0.a551922f63bf793191ca9ac2f8b8ffac98d47f56.001.1"] |
| Iem TypeSummary | D |
| Iem City | 2 NE Laytonsville |
| Iem County | Montgomery |
| Iem State | MD |
| Iem Wfo | LWX |
| Iem Remark | Tree down on MD 650. |
| MergedSources | [{"id":"iem_D_39.230_-77.120_1783290960000","source":"iem","severity":"low","severityValue":25,"timestamp":1783290960000,"latitude":39.23,"longitude":-77.12}] |
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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Hunt Valley (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.