Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
7 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 15 September 2026 at 04:15 UTC. It is kept here as a record.
It is the 9th strongest of the 23 detections recorded within 20 km of this point since 21 July 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued September 14 at 6:49PM MST until September 14 at 9:15PM MST by NWS Tucson AZ
Urban PEI: 16,901 within a heuristic 50 km radius; not unique people.
Nearby, since 21 July 2026
- August 8, 2026 · score 34 · 12.8 km
- September 3, 2026 · score 28 · 13.6 km
- September 9, 2026 · score 28 · 16.6 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 32.2432, -110.3238 |
| Nearest City | Tanque Verde (39 km) |
| Urban exposure index (PEI) | 16.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-15T01:49:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f94335858d6e6d264d115e09803718e0b78718be.001.1 |
Physical priority index · v5. 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: 2026-09-15T01:49:00.000Z.
First archived: 2026-09-15T01:51:09.130Z. 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; Pinal, AZ and 2 more areas |
| Headline | Flash Flood Warning issued September 14 at 6:49PM MST until September 14 at 9:15PM MST by NWS Tucson AZ |
| Expires | 2026-09-14T21:15:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f94335858d6e6d264d115e09803718e0b78718be.001.1","noaa_urn:oid:2.49.0.1.840.0.2bb6eda313971db4f51c27f07a54faae5a9af104.001.1","noaa_urn:oid:2.49.0.1.840.0.5e26c1e6da8102eca93c821a0c3bdf0999e22541.001.1","noaa_urn:oid:2.49.0.1.840.0.f910a13bcc4dbc3b8621929587106f79f37c4b55.001.1","noaa_urn:oid:2.49.0.1.840.0.e14c0c7fdf5e83d14f61481573f875ddb09247b8.001.1","noaa_urn:oid:2.49.0.1.840.0.fc57d752c4d5f5e5c19e1a8e1c041e1385a3cf4f.001.1","noaa_urn:oid:2.49.0.1.840.0.4f99369cfafcfab0bef8bd4e8594ce87d6b02fe5.001.1","noaa_urn:oid:2.49.0.1.840.0.8c48bdec71425a09af998c740a62681375db9076.001.1","noaa_urn:oid:2.49.0.1.840.0.739f218508b90721233c2592d9d6e8d6b3da19f0.001.1","noaa_urn:oid:2.49.0.1.840.0.d09dc196b6220e4ad03d5c1dbd42956196dfd6ae.001.1","noaa_urn:oid:2.49.0.1.840.0.19fbd79338ff483a56dbf53df1534464142d5a8d.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 60 |
| Spc Location | 7 ENE Tucson |
| Spc County | Pima |
| Spc State | AZ |
| Spc Comments | Measured wind gust of 60 mph. (TWC) |
| Iem TypeSummary | D |
| Iem City | 4 ENE Tucson |
| Iem County | Pima |
| Iem State | AZ |
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.
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