Right now
The most recent data we hold from NOAA arrived 6 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 04:52 UTC. It is kept here as a record.
It is the 18th strongest of the 25 detections recorded within 20 km of this point since 12 July 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Dust Storm Warning issued August 3 at 9:42PM MST until August 3 at 9:45PM MST by NWS Tucson AZ
Urban PEI: 109,834 within a heuristic 50 km radius; not unique people.
Nearby, since 12 July 2026
- July 13, 2026 · score 43 · 8.9 km
- August 4, 2026 · score 43 · 9.0 km
- August 11, 2026 · score 43 · 12.6 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 37 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) | 37 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 32.5451, -111.6846 |
| Nearest City | Eloy (27 km) |
| Urban exposure index (PEI) | 109.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-04T04:42:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Dust Storm Warning_noaa_urn:oid:2.49.0.1.840.0.3057b23a8728299a9371996822d9809f |
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: 2026-08-04T04:42:00.000Z.
First archived: 2026-08-04T04:43:58.831Z. 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 | Dust Storm Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Pinal, AZ; Pima, AZ |
| Headline | Dust Storm Warning issued August 3 at 9:42PM MST until August 3 at 9:45PM MST by NWS Tucson AZ |
| Expires | 2026-08-03T21:52:00-07:00 |
| SenderName | NWS Tucson AZ |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3057b23a8728299a9371996822d9809f75a280d5.001.1","noaa_urn:oid:2.49.0.1.840.0.864a5204e38e0cc73f6da3c1055cd4fdf274e712.001.1","noaa_urn:oid:2.49.0.1.840.0.39c2bfa574629aaa633d90468d32e4055538d7a1.001.1"] |
| Iem TypeSummary | 2 |
| Iem City | 5 SSE Casa Grande |
| Iem County | Pinal |
| Iem State | AZ |
| Iem Wfo | PSR |
| Iem Remark | A utility company camera near the intersection of Interstate 10 and Interstate 8, just south of Casa Grande, showed visibility dropping to less than one quarter mile in dense blowing dust. |
| MergedSources | [{"id":"iem_2_32.740_-111.570_1785815400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785815400000,"latitude":32.74,"longitude":-111.57},{"id":"iem_2_32.820_-111.710_1785816000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785816000000,"latitude":32.82,"longitude":-111.71}] |
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.
Want to know when something happens near Eloy?