Right now
The most recent data we hold from NOAA arrived 53 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
3 other detections within 20 km in the last 24 hours, the nearest 15 km from here.
This alert expired on 11 June 2026 at 03:00 UTC. It is kept here as a record.
It is the 229th strongest of the 590 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 10 at 2:40PM CDT until June 10 at 10:00PM CDT by NWS Chicago IL
Urban PEI: 450,012 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- August 13, 2026 · score 43 · 0.0 km
- August 12, 2026 · score 43 · 0.0 km
- August 9, 2026 · score 43 · 0.0 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 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) | 37 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 40.6000, -89.4000 |
| Nearest City | Morton (5 km) |
| Urban exposure index (PEI) | 450.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T19:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.bfcb0455b70e9ffd30f9dbe368a5d9f6 |
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: 2026-06-10T19:40:00.000Z.
First archived: 2026-06-10T21:00:51.526Z. 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 Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Northerly Island to Calumet Harbor IL; Cook, IL; DuPage, IL; Ford, IL; Grundy, IL; Iroquois, IL; Kane, IL; Kankakee, IL; Kendall, IL; Lake, IL; La Salle, IL; Livingston, IL; Will, IL; Benton, IN; Jasper, IN; Lake, IN; Newton, IN; Porter, IN; Cass, IL; Champaign, IL; Christian, IL; Coles, IL; De Witt, IL; Douglas, IL; Edgar, IL; Logan, IL; McLean, IL; Macon, IL; Marshall, IL; Mason, IL; Menard, IL; Morgan, IL; Moultrie, IL; Piatt, IL; Sangamon, IL; Scott, IL; Tazewell, IL; Vermilion, IL; Woodford, IL and 2 more areas |
| Headline | Severe Thunderstorm Watch issued June 10 at 2:40PM CDT until June 10 at 10:00PM CDT by NWS Chicago IL |
| Expires | 2026-06-10T22:00:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | false |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bfcb0455b70e9ffd30f9dbe368a5d9f6f3ea2892.002.1","noaa_urn:oid:2.49.0.1.840.0.bfcb0455b70e9ffd30f9dbe368a5d9f6f3ea2892.001.1","noaa_urn:oid:2.49.0.1.840.0.b0f4c812572e97e63c46b5170b8746dee91ce85f.001.1","noaa_urn:oid:2.49.0.1.840.0.bfcb0455b70e9ffd30f9dbe368a5d9f6f3ea2892.003.1","noaa_urn:oid:2.49.0.1.840.0.5a1d1f515b8559e0acf12e334b29e32cc2d8da12.001.1"] |
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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