This alert expired on 18 June 2026 at 23:15 UTC. It is kept here as a record.
It is the 3rd strongest of the 45 detections recorded within 20 km of this point since 17 April 2026. Another comparable one was recorded here earlier the same day. 23 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued June 18 at 3:06PM CDT until June 18 at 6:15PM CDT by NWS Norman OK
An estimated 76,534 people live within 50 km of this point.
Nearby, since 17 April 2026
- July 11, 2026 · score 39 · 2.4 km
- June 18, 2026 · score 39 · 11.4 km
- May 29, 2026 · score 39 · 15.2 km
How we know
Confirmed by 14 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 89 % 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) | 39 / 100 |
| Our confidence | 89% |
| Coordinates | 36.6720, -97.5567 |
| Nearest City | Ponca City (42 km) |
| Population Exposed | 76.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-18T20:06:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4bc02183eef6a4a505cee7d8c159ad470afe8c55.001.1 |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Grant, OK |
| Headline | Flood Warning issued June 18 at 3:06PM CDT until June 18 at 6:15PM CDT by NWS Norman OK |
| Expires | 2026-06-18T18:15:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| Iem TypeSummary | D |
| Iem City | Pond Creek |
| Iem County | Grant |
| Iem State | OK |
| Iem Wfo | OUN |
| Iem Remark | Wind damage at railroad crossing. The time of the damage is unknown. |
| MergedSources | [{"id":"iem_H_36.660_-97.680_1781794020000","source":"iem","severity":"low","severityValue":25,"timestamp":1781794020000,"latitude":36.66,"longitude":-97.68},{"id":"iem_F_36.640_-97.580_1781809140000","source":"iem","severity":"low","severityValue":25,"timestamp":1781809140000,"latitude":36.64,"longitude":-97.58},{"id":"iem_E_36.640_-97.590_1781802600000","source":"iem","severity":"low","severityValue":25,"timestamp":1781802600000,"latitude":36.64,"longitude":-97.59},{"id":"iem_F_36.620_-97.590_1781813220000","source":"iem","severity":"low","severityValue":25,"timestamp":1781813220000,"latitude":36.62,"longitude":-97.59},{"id":"iem_H_36.660_-97.680_1781804280000","source":"iem","severity":"low","severityValue":25,"timestamp":1781804280000,"latitude":36.66,"longitude":-97.68},{"id":"iem_H_36.690_-97.560_1781792760000","source":"iem","severity":"low","severityValue":25,"timestamp":1781792760000,"latitude":36.69,"longitude":-97.56},{"id":"iem_H_36.670_-97.800_1781805240000","source":"iem","severity":"low","severityValue":25,"timestamp":1781805240000,"latitude":36.67,"longitude":-97.8},{"id":"iem_H_36.690_-97.560_1781804640000","source":"iem","severity":"low","severityValue":25,"timestamp":1781804640000,"latitude":36.69,"longitude":-97.56},{"id":"iem_H_36.590_-97.350_1781808480000","source":"iem","severity":"low","severityValue":25,"timestamp":1781808480000,"latitude":36.59,"longitude":-97.35},{"id":"iem_F_36.660_-97.560_1781794800000","source":"iem","severity":"low","severityValue":25,"timestamp":1781794800000,"latitude":36.66,"longitude":-97.56},{"id":"iem_D_36.680_-97.560_1781793600000","source":"iem","severity":"low","severityValue":25,"timestamp":1781793600000,"latitude":36.68,"longitude":-97.56},{"id":"iem_F_36.660_-97.560_1781795700000","source":"iem","severity":"low","severityValue":25,"timestamp":1781795700000,"latitude":36.66,"longitude":-97.56},{"id":"iem_D_36.670_-97.800_1781805000000","source":"iem","severity":"low","severityValue":25,"timestamp":1781805000000,"latitude":36.67,"longitude":-97.8}] |
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 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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.