Right now
The most recent data we hold from NOAA arrived 41 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 6 July 2026 at 01:45 UTC. It is kept here as a record.
It is the 24th strongest of the 48 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 3 July 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued July 5 at 8:03PM EDT until July 5 at 9:45PM EDT by NWS Baltimore MD/Washington DC
Urban PEI: 24,825 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- August 27, 2026 · score 43 · 9.1 km
- August 7, 2026 · score 39 · 11.2 km
- August 28, 2026 · score 43 · 13.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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 | Medium |
| Calamity Score (ours) | 34 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 40.8122, -76.1921 |
| Nearest City | Hazleton (25 km) |
| Urban exposure index (PEI) | 24.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-06T00:03:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.ae3875864c102774046564752572b21c |
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: 2026-07-06T00:03:00.000Z.
First archived: 2026-07-06T00:17:52.525Z. 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 | Howard, MD; Montgomery, MD; Hanover, VA; Henrico, VA; Juniata, PA; Perry, PA and 6 more areas |
| Headline | Flash Flood Warning issued July 5 at 8:03PM EDT until July 5 at 9:45PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-05T21:45:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | true |
| MergedCount | 10 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ae3875864c102774046564752572b21ce1b571c8.001.1","noaa_urn:oid:2.49.0.1.840.0.1969bf3bbfabadb54f645b20c9a3b608750f06ff.001.1","noaa_urn:oid:2.49.0.1.840.0.2d09870a4e1c88514366109413419279bb61cad5.001.1","noaa_urn:oid:2.49.0.1.840.0.2e926ea876df1c10c73cad0b3509a0a81a146026.001.1","noaa_urn:oid:2.49.0.1.840.0.c354d209aeb2a64475ffc8a87b1195a256f7c2c0.001.1","noaa_urn:oid:2.49.0.1.840.0.3598234354636330305ab5fd678cb0d8b428b7bb.001.1","noaa_urn:oid:2.49.0.1.840.0.eb892be4dc1ca3f3f5d098c57d920629d116ef25.001.1","noaa_urn:oid:2.49.0.1.840.0.cfe5fb298498d06fc565cd906abab83e0030e5bd.001.1","noaa_urn:oid:2.49.0.1.840.0.66972997ab6cb83b22d79c371895232ea8d7a10e.001.1","noaa_urn:oid:2.49.0.1.840.0.f44aced1266997f391b47064fe8492dd5f4ee776.001.1"] |
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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