Right now
The most recent data we hold from NOAA arrived 3 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 is in force until 7 September 2026, 04:00 UTC.
It is the 22nd strongest of the 50 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 20 August 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 6 at 7:02PM CDT until September 6 at 11:00PM CDT by NWS Omaha/Valley NE
An estimated 640,589 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 13, 2026 · score 48 · 13.8 km
- May 18, 2026 · score 48 · 15.8 km
- July 9, 2026 · score 48 · 17.3 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 41 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 41 / 100 |
| Our confidence | 90% |
| Coordinates | 41.1431, -95.5155 |
| Nearest City | Bellevue (31 km) |
| Population Exposed | 640.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-07T00:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f8720d2b63dd5bafb892e363820e630a44183fc9.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Nemaha, NE; Crawford, IA |
| Headline | Flash Flood Warning issued September 6 at 7:02PM CDT until September 6 at 11:00PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-09-06T23:00:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f8720d2b63dd5bafb892e363820e630a44183fc9.001.1","noaa_urn:oid:2.49.0.1.840.0.8e31e2260193ef0992e9e8ac48558b24236e1185.001.1"] |
| Spc ReportType | wind |
| Spc Speed | 60 |
| Spc Location | 3 W Kirkman |
| Spc County | Shelby |
| Spc State | IA |
| Spc Comments | Public report of thunderstorm wind gusts estimated at 50-60 mph... breaking a few large tree branches. (OAX) |
| Iem TypeSummary | G |
| Iem Magnitude | 60 |
| Iem Unit | MPH |
| Iem City | 3 W Kirkman |
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 41/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.