Right now
The most recent data we hold from NOAA arrived 2 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 5 August 2026 at 19:00 UTC. It is kept here as a record.
It is the 5th strongest of the 212 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 2 August 2026. 17 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 5 at 11:55AM EDT until August 5 at 3:00PM EDT by NWS Baltimore MD/Washington DC
Urban PEI: 2,656,996 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- August 6, 2026 · score 52 · 3.6 km
- June 22, 2026 · score 52 · 3.9 km
- July 9, 2026 · score 52 · 4.2 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 53 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 | High |
| Calamity Score (ours) | 53 / 100 |
| Legacy data-support index | 0.87/1 |
| Coordinates | 39.2538, -76.5162 |
| Nearest City | Dundalk (1 km) |
| Urban exposure index (PEI) | 2.7M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-08-05T15:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e9bd4103c3751c38a01e886458ad2919ba8f6915.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-08-05T15:55:00.000Z.
First archived: 2026-08-05T16:55:47.518Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Baltimore, MD |
| Headline | Flash Flood Warning issued August 5 at 11:55AM EDT until August 5 at 3:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-08-05T15:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| Ogimet StationId | 72503 |
| Ogimet WindSpeed | 51 |
| Ogimet WindUnit | knots |
| Ogimet Temperature | 23.3 |
| Ogimet TemperatureUnit | C |
| Ogimet RawSynop | 08,05,11,51,AAXX 05124 72503 32766 60606 10233 20189 30196 40210 53009 91151 333 10294 20222 555 90512= |
| MergedSources | [{"id":"ogimet_72503_1785948339858","source":"ogimet","severity":"high","severityValue":70,"timestamp":1785948339858,"latitude":38.9,"longitude":-77}] |
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.
Review the area, threshold and delivery channel in your account.
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