Right now
The most recent data we hold from NOAA arrived 18 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 September 2026 at 03:00 UTC. It is kept here as a record.
No stronger detection stands among the 9 recorded within 20 km of this point since 9 July 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 3 at 5:39PM MST until September 3 at 8:00PM MST by NWS Tucson AZ
Nearby, since 9 July 2026
- September 12, 2026 · score 16 · 15.9 km
- July 20, 2026 · 16.7 km
- July 11, 2026 · 19.4 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.67/1 |
| Coordinates | 32.3294, -110.0011 |
| Nearest City | Tanque Verde (70 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-04T00:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.dbe840614ad806e9f86ec0e30dad4a8fd99bdc06.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-04T00:39:00.000Z.
First archived: 2026-09-04T00:42:23.501Z. 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 | Pinal, AZ; Graham, AZ; Pinal, AZ; Cochise, AZ and 1 more areas |
| Headline | Flash Flood Warning issued September 3 at 5:39PM MST until September 3 at 8:00PM MST by NWS Tucson AZ |
| Expires | 2026-09-03T20:00:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dbe840614ad806e9f86ec0e30dad4a8fd99bdc06.001.1","noaa_urn:oid:2.49.0.1.840.0.a3365233e039b1635c36ed9af43523cc88a6777c.001.1","noaa_urn:oid:2.49.0.1.840.0.34d19234f7ac50f5709bfdb6e2197bbc3164b506.001.1","noaa_urn:oid:2.49.0.1.840.0.f2243cc5aacf5e32d3eecea22e1060a2b3fd6a51.001.1","noaa_urn:oid:2.49.0.1.840.0.4a12158e35770d6434ba2ebe092a942e29a39caf.001.1","noaa_urn:oid:2.49.0.1.840.0.52a7d96d35c30525ca224bf6b63ac2d64f2d0e57.001.1"] |
| Iem TypeSummary | F |
| Iem City | 10 S Safford |
| Iem County | Graham |
| Iem State | AZ |
| Iem Wfo | TWC |
| Iem Remark | Water flowing across area roadways. 1.8 inches of rain so far. |
| MergedSources | [{"id":"iem_R_32.690_-109.710_1788476040000","source":"iem","severity":"low","severityValue":25,"timestamp":1788476040000,"latitude":32.69,"longitude":-109.71},{"id":"iem_F_32.780_-109.680_1788480900000","source":"iem","severity":"low","severityValue":25,"timestamp":1788480900000,"latitude":32.78,"longitude":-109.68},{"id":"iem_F_32.690_-109.710_1788475200000","source":"iem","severity":"low","severityValue":25,"timestamp":1788475200000,"latitude":32.69,"longitude":-109.71}] |
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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