This alert expired on 1 July 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 43 recorded within 20 km of this point since 8 March 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 30 at 4:30PM MDT until July 1 at 4:30PM MDT by NWS Great Falls MT
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 59 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 22 / 100 |
| Our confidence | 59% |
| Coordinates | 48.5649, -113.2623 |
| Nearest City | Kalispell (87 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-30T22:30:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.09035c01046e1b8ed501b9d9a2a82266 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Glacier, MT; Glacier, MT; Pondera, MT |
| Headline | Flood Warning issued June 30 at 4:30PM MDT until July 1 at 4:30PM MDT by NWS Great Falls MT |
| Expires | 2026-07-01T16:30:00-06:00 |
| SenderName | NWS Great Falls MT |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.09035c01046e1b8ed501b9d9a2a822660cd9805f.001.1","noaa_urn:oid:2.49.0.1.840.0.a6ad91413b3c6e1a7688363cf37de5a18f79b44e.001.1"] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.