This alert expired on 31 August 2026 at 05:00 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 13 July 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 30 at 9:47PM MST until August 30 at 10:00PM MST by NWS Phoenix AZ
An estimated 3,108,784 people live within 50 km of this point.
Nearby, since 13 July 2026
- August 31, 2026 · score 52 · 9.7 km
- July 13, 2026 · score 52 · 15.6 km
- July 25, 2026 · score 48 · 24.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 86 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 86% |
| Coordinates | 33.7663, -112.4522 |
| Nearest City | Sun City West (16 km) |
| Population Exposed | 3.1M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-31T04:47:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Maricopa, AZ |
| Headline | Severe Thunderstorm Warning issued August 30 at 9:47PM MST until August 30 at 10:00PM MST by NWS Phoenix AZ |
| Expires | 2026-08-30T22:00:00-07:00 |
| SenderName | NWS Phoenix AZ |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.69a514024b0534cd63122ca33c2fec72c1dd1478.001.1","noaa_urn:oid:2.49.0.1.840.0.0312f657f19b4459ba78fe63ecac7563bf7eb951.001.1","noaa_urn:oid:2.49.0.1.840.0.e733edce538a9bcc92c76fa6cf365e793a1eab84.001.1"] |
| Google News RssFeed | weather |
| Google News SourceName | KTAR News 92.3 FM |
| MergedSources | [{"id":"gnews_weather_496707_228","source":"google_news","severity":"medium","severityValue":40,"timestamp":1788147549000,"latitude":33.45,"longitude":-112.07}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 52/100, near Sun City West (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.