Right now
The most recent data we hold from NOAA arrived 59 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 17 July 2026 at 00:00 UTC. It is kept here as a record.
No stronger detection stands among the 25 recorded within 20 km of this point since 14 March 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 16 at 5:37PM MDT until July 16 at 6:00PM MDT by NWS Missoula MT
Urban PEI: 32,091 within a heuristic 50 km radius; not unique people.
Nearby, since 14 March 2026
- July 16, 2026 · score 34 · 1.6 km
- July 24, 2026 · score 34 · 7.7 km
- March 14, 2026 · score 22 · 10.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 46.3785, -111.5804 |
| Nearest City | Helena (42 km) |
| Urban exposure index (PEI) | 32.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-16T23:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c0043cec9109fcf5125bf8a902114dad |
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: 2026-07-16T23:37:00.000Z.
First archived: 2026-07-16T23:41:32.682Z. 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 | Deer Lodge, MT; Silver Bow, MT; Meagher, MT; Golden Valley, MT; Wheatland, MT and 2 more areas |
| Headline | Severe Thunderstorm Warning issued July 16 at 5:37PM MDT until July 16 at 6:00PM MDT by NWS Missoula MT |
| Expires | 2026-07-16T18:00:00-06:00 |
| SenderName | NWS Missoula MT |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c0043cec9109fcf5125bf8a902114dad8fe51625.001.1","noaa_urn:oid:2.49.0.1.840.0.ed7d6efb3aacb0ab7f8297ba702f65276d686077.001.1","noaa_urn:oid:2.49.0.1.840.0.79876a09512669fa20207e175e68bffe913c697f.001.1","noaa_urn:oid:2.49.0.1.840.0.af505262483d60694169250739b0f11f0e6386f6.001.1","noaa_urn:oid:2.49.0.1.840.0.a42fd38c0d1c6a2f9cde6521da2c69731a5d7c9a.001.1"] |
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.
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