This alert expired on 7 July 2026 at 03:30 UTC. It is kept here as a record.
It is the 6th strongest of the 103 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 6 July 2026. 17 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 6 at 8:21PM EDT until July 6 at 11:30PM EDT by NWS Baltimore MD/Washington DC
An estimated 1,963,111 people live within 50 km of this point.
Nearby, since 16 March 2026
- September 2, 2026 · score 46 · 1.3 km
- March 16, 2026 · score 52 · 1.6 km
- August 28, 2026 · score 52 · 6.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 86 % 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) | 52 / 100 |
| Our confidence | 86% |
| Coordinates | 39.4571, -76.3236 |
| Nearest City | Edgewood (5 km) |
| Population Exposed | 2.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-07T00:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.7cb8461c06cb4289194ca0db5fb8fa27a4e66e50.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Harford, MD |
| Headline | Flash Flood Warning issued July 6 at 8:21PM EDT until July 6 at 11:30PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-06T23:30:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 3.02 |
| Iem Unit | Inch |
| Iem City | 3 NNW Oakland |
| Iem County | Queen Annes |
| Iem State | MD |
| Iem Wfo | PHI |
| Iem Remark | Mesonet station GW0280 Centreville. |
| MergedSources | [{"id":"iem_R_39.030_-75.890_1783372500000","source":"iem","severity":"low","severityValue":25,"timestamp":1783372500000,"latitude":39.03,"longitude":-75.89}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 Edgewood?
Calamity.live data shows a weather event with CalamityScore 52/100, near Edgewood (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.