Right now
The most recent data we hold from NOAA arrived 15 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 August 2026 at 06:15 UTC. It is kept here as a record.
It is the 34th strongest of the 111 detections recorded within 20 km of this point since 12 May 2026. The last comparable one was on 4 August 2026. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 5 at 10:31PM MST until August 5 at 11:15PM MST by NWS Tucson AZ
Urban PEI: 855,005 within a heuristic 50 km radius; not unique people.
Nearby, since 12 May 2026
- August 30, 2026 · score 54 · 10.4 km
- July 25, 2026 · score 41 · 12.4 km
- August 30, 2026 · score 54 · 12.5 km
How we know
3 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 | 32.0633, -111.0926 |
| Nearest City | Drexel Heights (10 km) |
| Urban exposure index (PEI) | 855.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-06T05:31:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.0a3750bb80eafd292c3ae03d47b4fa62 |
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: 2026-08-06T05:31:00.000Z.
First archived: 2026-08-06T05:52:55.818Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pima, AZ |
| Headline | Severe Thunderstorm Warning issued August 5 at 10:31PM MST until August 5 at 11:15PM MST by NWS Tucson AZ |
| Expires | 2026-08-05T23:15:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0a3750bb80eafd292c3ae03d47b4fa62cc0dcd2b.001.1","noaa_urn:oid:2.49.0.1.840.0.b0f1d60c43ed2e0675d9bae8d95d36bd455a3d50.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 59 |
| Iem Unit | MPH |
| Iem City | 2 ESE Green Valley |
| Iem County | Pima |
| Iem State | AZ |
| Iem Wfo | TWC |
| Iem Remark | Mesonet station FW0852 Fountain Hills. |
| MergedSources | [{"id":"iem_D_32.210_-110.810_1785993900000","source":"iem","severity":"low","severityValue":25,"timestamp":1785993900000,"latitude":32.21,"longitude":-110.81},{"id":"iem_G_31.840_-110.970_1785992100000","source":"iem","severity":"low","severityValue":25,"timestamp":1785992100000,"latitude":31.84,"longitude":-110.97}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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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