Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
5 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 25 September 2026 at 14:30 UTC. It is kept here as a record.
No stronger detection stands among the 20 recorded within 20 km of this point since 13 March 2026 — 19 others scored the same. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued September 24 at 9:24PM CDT until September 25 at 12:00PM CDT by NWS Milwaukee/Sullivan WI
Urban PEI: 1,750,250 within a heuristic 50 km radius; not unique people.
Nearby, since 13 March 2026
- September 25, 2026 · score 46 · 0.0 km
- September 24, 2026 · score 46 · 0.0 km
- September 23, 2026 · score 46 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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) | 46 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 42.4462, -88.0276 |
| Nearest City | Round Lake Beach (10 km) |
| Urban exposure index (PEI) | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-25T02:24:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.7aef1e8e605d4d8feab9a1068787bf78dc6962e1.001.1 |
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: 2026-09-25T02:24:00.000Z.
First archived: 2026-09-25T02:30:19.990Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-25T09:36:24.849Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T09:31:02.389Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T09:14:02.834Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T08:57:54.146Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T08:30:57.128Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T08:20:12.439Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T07:58:10.182Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T07:26:00.472Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T07:20:38.620Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T07:04:31.890Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T06:42:24.536Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T06:04:52.013Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T05:42:50.526Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T04:54:48.476Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T04:00:39.208Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T03:49:59.403Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T03:44:15.473Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T03:28:25.903Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T03:17:54.182Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
2026-09-25T03:12:38.065Z · data_change
Index 46 → 46; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Lake, IL; Kenosha, WI; Lake, IL |
| Headline | Flood Warning issued September 24 at 9:24PM CDT until September 25 at 12:00PM CDT by NWS Milwaukee/Sullivan WI |
| Expires | 2026-09-25T09:30:00-05:00 |
| SenderName | NWS Milwaukee/Sullivan WI |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7aef1e8e605d4d8feab9a1068787bf78dc6962e1.001.1","noaa_urn:oid:2.49.0.1.840.0.8ff2165e0da55233b8995df679228eda56292898.001.1","noaa_urn:oid:2.49.0.1.840.0.8ff2165e0da55233b8995df679228eda56292898.002.1"] |
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.
Review the area, threshold and delivery channel in your account.
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