Right now
The most recent data we hold from NOAA arrived 78 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 11 August 2026 at 15:45 UTC. It is kept here as a record.
It is the 11th strongest of the 66 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 11 at 10:10AM CDT until August 11 at 10:45AM CDT by NWS Northern Indiana
Urban PEI: 1,221,479 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- August 12, 2026 · score 52 · 1.5 km
- June 12, 2026 · score 41 · 9.5 km
- June 10, 2026 · score 76 · 13.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 41.3768, -88.2624 |
| Nearest City | Shorewood (17 km) |
| Urban exposure index (PEI) | 1.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-11T15:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8e93f5bc92203aa50792722f88f2d162 |
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: 2026-08-11T15:10:00.000Z.
First archived: 2026-08-11T15:16:15.876Z. 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 | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Starke, IN; Jasper, IN; Porter, IN; Grundy, IL; Kendall, IL; La Salle, IL; Livingston, IL and 3 more areas |
| Headline | Severe Thunderstorm Warning issued August 11 at 10:10AM CDT until August 11 at 10:45AM CDT by NWS Northern Indiana |
| Expires | 2026-08-11T10:45:00-05:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8e93f5bc92203aa50792722f88f2d16296a528af.001.1","noaa_urn:oid:2.49.0.1.840.0.9d9e82653f700e0134f3b2a7cc4c4aa6c76107c1.002.1","noaa_urn:oid:2.49.0.1.840.0.66d41639c8d0aed3f29b7de9d5957f7bd72c9fa4.001.1","noaa_urn:oid:2.49.0.1.840.0.9128fd9909c32edde18ee252332ba02440b5a572.001.1","noaa_urn:oid:2.49.0.1.840.0.ce39bbbe9b1c1c314a8556f3294807e0ca31c873.001.1","noaa_urn:oid:2.49.0.1.840.0.2792b581438464675c6fe1130506b21e38664987.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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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