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 expired on 2 August 2026 at 20:45 UTC. It is kept here as a record.
No stronger detection stands among the 57 recorded within 20 km of this point since 15 March 2026 — 25 others scored the same. The last comparable one was on 27 July 2026. 20 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued August 1 at 9:34PM CDT until August 2 at 4:00PM CDT by NWS Chicago IL
Urban PEI: 479,753 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- August 12, 2026 · score 43 · 1.9 km
- September 16, 2026 · score 37 · 4.2 km
- August 2, 2026 · score 43 · 5.5 km
How we know
21 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 40.2375, -86.5059 |
| Nearest City | Frankfort (5 km) |
| Urban exposure index (PEI) | 479.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-02T05:08:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.770ee713f5b76e6f20f734d63cbc8e8b |
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: 2026-08-02T05:08:00.000Z.
First archived: 2026-08-02T02:57:51.832Z. 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 | Immediate |
| Certainty | Observed |
| AreaDesc | Will, IL; Cook, IL; Cook, IL; Lake, IN and 13 more areas |
| Headline | Flood Warning issued August 1 at 9:34PM CDT until August 2 at 4:00PM CDT by NWS Chicago IL |
| Expires | 2026-08-02T15:45:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.770ee713f5b76e6f20f734d63cbc8e8b7e0aec3b.001.1","noaa_urn:oid:2.49.0.1.840.0.354a0c507b14c41e9b35b512cb136a63a7b8d421.002.1","noaa_urn:oid:2.49.0.1.840.0.354a0c507b14c41e9b35b512cb136a63a7b8d421.001.1","noaa_urn:oid:2.49.0.1.840.0.c8af72fb2858e762c962acea8433a1a74cd02bb2.001.1","noaa_urn:oid:2.49.0.1.840.0.15492ccfa2b311d9bea9643652153fea9b0e7e4a.001.1","noaa_urn:oid:2.49.0.1.840.0.b1b23fa0e24a45b9df3deb9a014f467c6315aada.001.1","noaa_urn:oid:2.49.0.1.840.0.fab33e03f801c772c8f0a5e7dbf4516e778aa012.001.1","noaa_urn:oid:2.49.0.1.840.0.771d1a8fa01326fcf56a161368cd4bf9db3affbf.001.1","noaa_urn:oid:2.49.0.1.840.0.4cb22c8f6d47b0f3d388fa6d3514dd1ee24d0b01.001.1","noaa_urn:oid:2.49.0.1.840.0.dba060a86ef19bc9bca8adbb2f4bfa75c3a4bcf3.001.1","noaa_urn:oid:2.49.0.1.840.0.cf0ba6b6d4574381ac1b355de2ff21488a9fa10f.001.1","noaa_urn:oid:2.49.0.1.840.0.95415018d08c85ca6319e37ed764b45d0352aff0.001.1","noaa_urn:oid:2.49.0.1.840.0.bafad24fb421d6207331dcbdf89452dba01dad58.001.1","noaa_urn:oid:2.49.0.1.840.0.667d846420251fb14d2425118cf900c8f16eb43d.001.1","noaa_urn:oid:2.49.0.1.840.0.8b2a2e32a6a6bd5a11078f3c3c763db5191d56f3.001.1","noaa_urn:oid:2.49.0.1.840.0.3870ec4c72005693e83d1551d85ae5009ed86ec1.001.1"] |
| Iem TypeSummary | R |
| Iem Magnitude | 1.21 |
| Iem Unit | Inch |
| Iem City | 1 ESE Purdue University |
| Iem County | Tippecanoe |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | Mesonet station GW7323 LAFAYETTE. |
| MergedSources | [{"id":"iem_R_39.920_-86.890_1785628800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628800000,"latitude":39.92,"longitude":-86.89},{"id":"iem_R_39.860_-86.130_1785628200000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628200000,"latitude":39.86,"longitude":-86.13},{"id":"iem_R_39.870_-86.140_1785628800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628800000,"latitude":39.87,"longitude":-86.14},{"id":"iem_R_40.520_-87.180_1785629340000","source":"iem","severity":"low","severityValue":25,"timestamp":1785629340000,"latitude":40.52,"longitude":-87.18},{"id":"iem_R_39.810_-86.310_1785628980000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628980000,"latitude":39.81,"longitude":-86.31},{"id":"iem_E_40.500_-87.090_1785627900000","source":"iem","severity":"low","severityValue":25,"timestamp":1785627900000,"latitude":40.5,"longitude":-87.09},{"id":"iem_R_39.880_-86.050_1785625800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785625800000,"latitude":39.88,"longitude":-86.05},{"id":"iem_R_39.770_-86.180_1785629040000","source":"iem","severity":"low","severityValue":25,"timestamp":1785629040000,"latitude":39.77,"longitude":-86.18},{"id":"iem_R_39.630_-86.820_1785628500000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628500000,"latitude":39.63,"longitude":-86.82},{"id":"iem_R_39.950_-86.900_1785628980000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628980000,"latitude":39.95,"longitude":-86.9},{"id":"iem_R_39.960_-86.130_1785628800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628800000,"latitude":39.96,"longitude":-86.13},{"id":"iem_E_40.490_-87.100_1785628800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628800000,"latitude":40.49,"longitude":-87.1},{"id":"iem_R_40.120_-85.680_1785627660000","source":"iem","severity":"low","severityValue":25,"timestamp":1785627660000,"latitude":40.12,"longitude":-85.68},{"id":"iem_R_39.790_-86.800_1785628980000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628980000,"latitude":39.79,"longitude":-86.8},{"id":"iem_R_40.490_-87.090_1785629280000","source":"iem","severity":"low","severityValue":25,"timestamp":1785629280000,"latitude":40.49,"longitude":-87.09},{"id":"iem_R_39.940_-86.240_1785628800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628800000,"latitude":39.94,"longitude":-86.24},{"id":"iem_R_39.860_-86.130_1785625800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785625800000,"latitude":39.86,"longitude":-86.13},{"id":"iem_R_39.770_-86.130_1785626220000","source":"iem","severity":"low","severityValue":25,"timestamp":1785626220000,"latitude":39.77,"longitude":-86.13},{"id":"iem_R_39.920_-86.730_1785628800000","source":"iem","severity":"low","severityValue":25,"timestamp":1785628800000,"latitude":39.92,"longitude":-86.73},{"id":"iem_R_40.420_-86.890_1785629400000","source":"iem","severity":"low","severityValue":25,"timestamp":1785629400000,"latitude":40.42,"longitude":-86.89}] |
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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