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.
15 other detections within 20 km in the last 24 hours, the nearest 6 km from here.
This alert expired on 1 October 2026 at 07:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 21 detections recorded within 20 km of this point since 15 March 2026. 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: Flash Flood Warning issued September 30 at 11:11PM CDT until October 1 at 2:15AM CDT by NWS Omaha/Valley NE
Urban PEI: 340,741 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- September 3, 2026 · 7.5 km
- September 2, 2026 · 7.5 km
- August 19, 2026 · 15.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 37 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 41.0030, -96.6015 |
| Nearest City | Lincoln (23 km) |
| Urban exposure index (PEI) | 340.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-10-01T04:11:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.9ee2289a657bf6729df0a458901d615dda0f5b97.001.1 |
Physical priority index · v5. 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: 2026-10-01T04:11:00.000Z.
First archived: 2026-10-01T02:30:30.887Z. Material modification: 2026-10-01T04:16:51.029Z.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
8 retained revisions changed source fields this page does not show; the index, severity and version stayed the same.
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| MessageId | urn:oid:2.49.0.1.840.0.9ee2289a657bf6729df0a458901d615dda0f5b97.001.1 |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Harrison, IA; Pottawattamie, IA; Shelby, IA; Douglas, NE; Washington, NE; Pottawattamie, IA; Douglas, NE; Sarpy, NE; Lancaster, NE; Saline, NE; Seward, NE and 2 more areas |
| Headline | Flash Flood Warning issued September 30 at 11:11PM CDT until October 1 at 2:15AM CDT by NWS Omaha/Valley NE |
| Expires | 2026-10-01T02:15:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | true |
| MergedCount | 7 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9ee2289a657bf6729df0a458901d615dda0f5b97.001.1","noaa_urn:oid:2.49.0.1.840.0.28c8a44fdd5c56fa3b8b0186ba6296a0ee93c9c5.001.1","noaa_urn:oid:2.49.0.1.840.0.0e3a3959ed11306375468a534918c49d89d5710d.001.1","noaa_urn:oid:2.49.0.1.840.0.18ad46f72aed20f6b0a201c4d3dbca39a4024157.001.1","noaa_urn:oid:2.49.0.1.840.0.03b68c58ac242d636132de409c9cc42d638a500a.001.1","noaa_urn:oid:2.49.0.1.840.0.daa9292c8f67f67c591fe2116b897686e53385c3.001.1","noaa_urn:oid:2.49.0.1.840.0.4550aff556ac414abccf9ce34a5c38a058562f2d.001.1"] |
| Iem TypeSummary | Heavy rain |
| Iem LsrCode | R |
| Iem LsrType | RAIN |
| Iem Magnitude | 2.54 |
| Iem Unit | Inch |
| Iem City | Friend |
| Iem County | Saline |
| Iem State | NE |
| Iem Wfo | OAX |
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.
Review the area, threshold and delivery channel in your account.
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