Right now
The most recent data we hold from NOAA arrived 4 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 4 August 2026 at 07:15 UTC. It is kept here as a record.
It is the 34th strongest of the 72 detections recorded within 20 km of this point since 11 July 2026. The last comparable one was on 26 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued August 3 at 9:18PM MST until August 4 at 12:15AM MST by NWS Tucson AZ
Urban PEI: 636,438 within a heuristic 50 km radius; not unique people.
Nearby, since 11 July 2026
- July 25, 2026 · score 37 · 4.2 km
- September 14, 2026 · score 41 · 9.8 km
- August 28, 2026 · score 49 · 12.4 km
How we know
5 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 41 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) | 41 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 31.7895, -110.8569 |
| Nearest City | Green Valley (14 km) |
| Urban exposure index (PEI) | 636.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-04T04:18:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flash Flood Warning_noaa_urn:oid:2.49.0.1.840.0.7f43a1eda490c14cdebe15e7ba347285 |
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: 2026-08-04T04:18:00.000Z.
First archived: 2026-08-04T04:54:45.055Z. 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 | Pima, AZ; Cochise, AZ |
| Headline | Flash Flood Warning issued August 3 at 9:18PM MST until August 4 at 12:15AM MST by NWS Tucson AZ |
| Expires | 2026-08-04T00:15:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7f43a1eda490c14cdebe15e7ba34728597dc499e.001.1","noaa_urn:oid:2.49.0.1.840.0.89f08f4e10b07d8bfc60bef132b4fcfb0bf05ad6.001.1"] |
| Iem TypeSummary | F |
| Iem City | 8 NE Huachuca City |
| Iem County | Cochise |
| Iem State | AZ |
| Iem Wfo | TWC |
| Iem Remark | Babocomari River near Tombstone exceeded bankfull at 4 ft. |
| MergedSources | [{"id":"iem_G_32.130_-110.950_1785811080000","source":"iem","severity":"low","severityValue":25,"timestamp":1785811080000,"latitude":32.13,"longitude":-110.95},{"id":"iem_G_32.130_-110.950_1785810120000","source":"iem","severity":"low","severityValue":25,"timestamp":1785810120000,"latitude":32.13,"longitude":-110.95},{"id":"iem_G_32.220_-111.130_1785812100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785812100000,"latitude":32.22,"longitude":-111.13},{"id":"iem_F_31.700_-110.230_1785803400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785803400000,"latitude":31.7,"longitude":-110.23}] |
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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