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 30 June 2026 at 20:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 9 detections recorded within 20 km of this point since 7 April 2026. The last comparable one was on 29 June 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 29 at 8:41PM MDT until June 30 at 2:45PM MDT by NWS Great Falls MT
Nearby, since 7 April 2026
- June 29, 2026 · score 34 · 16.6 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 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) | 22 / 100 |
| Legacy data-support index | 0.65/1 |
| Coordinates | 48.3291, -113.5735 |
| Nearest City | Kalispell (56 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-30T02:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.8499a8771f50011b78b035c5e9abae4f |
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: 2026-06-30T02:41:00.000Z.
First archived: 2026-06-30T03:16:21.386Z. 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 | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Glacier, MT; Pondera, MT; Flathead, MT; Glacier, MT and 1 more areas |
| Headline | Flood Warning issued June 29 at 8:41PM MDT until June 30 at 2:45PM MDT by NWS Great Falls MT |
| Expires | 2026-06-30T14:45:00-06:00 |
| SenderName | NWS Great Falls MT |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8499a8771f50011b78b035c5e9abae4f638bacf2.001.1","noaa_urn:oid:2.49.0.1.840.0.45e50282de297ec28112401ab7483ce53e6e6fd0.001.1","noaa_urn:oid:2.49.0.1.840.0.4436b30e1f00ba7d985fb19cb39b211a7c06aa62.001.1","noaa_urn:oid:2.49.0.1.840.0.1c6d2eefd2ec87f39b9affed96777106a7b12a37.001.1"] |
| Iem TypeSummary | E |
| Iem City | 11 WSW Babb |
| Iem County | Glacier |
| Iem State | MT |
| Iem Wfo | TFX |
| Iem Remark | Heavy rainfall has caused significant flooding across Glacier National Park, prompting multiple temporary closures. Also have seen multiple photos/pictures from the area of flooded roads and trails, a |
| MergedSources | [{"id":"iem_E_48.800_-113.670_1782780180000","source":"iem","severity":"low","severityValue":25,"timestamp":1782780180000,"latitude":48.8,"longitude":-113.67}] |
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.
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