This alert expired on 16 March 2026 at 00:30 UTC. It is kept here as a record.
No stronger detection stands among the 324 recorded within 20 km of this point since 15 March 2026 — 8 others scored the same. The last comparable one was on 15 March 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued March 15 at 7:05PM CDT until March 15 at 7:30PM CDT by NWS Lincoln IL
An estimated 128,407 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 11, 2026 · score 67 · 6.5 km
- March 15, 2026 · score 67 · 7.3 km
- March 16, 2026 · score 43 · 9.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 67 out of 100, at 83 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 | Critical |
| Calamity Score (ours) | 67 / 100 |
| Our confidence | 83% |
| Coordinates | 39.9457, -88.3531 |
| Nearest City | Champaign (22 km) |
| Population Exposed | 128.4K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-16T00:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.bd115f6735c9350bfee8c5549b31834a |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Douglas, IL; Champaign, IL; Douglas, IL; Champaign, IL; De Witt, IL; McLean, IL; Piatt, IL |
| Headline | Tornado Warning issued March 15 at 7:05PM CDT until March 15 at 7:30PM CDT by NWS Lincoln IL |
| Expires | 2026-03-15T19:30:00-05:00 |
| SenderName | NWS Lincoln IL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.bd115f6735c9350bfee8c5549b31834aafaf04f6.002.1","noaa_urn:oid:2.49.0.1.840.0.b55fdeea1d67860611f36a5d3138587284e2088b.002.1","noaa_urn:oid:2.49.0.1.840.0.f5053a84a17601990962a4a96664d8316d3611ef.001.1"] |
| Iem TypeSummary | C |
| Iem City | 1 SW Maroa |
| Iem County | Macon |
| Iem State | IL |
| Iem Wfo | ILX |
| MergedSources | [{"id":"iem_C_40.030_-88.970_1773616680000","source":"iem","severity":"low","severityValue":25,"timestamp":1773616680000,"latitude":40.03,"longitude":-88.97}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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.
Want to know when something happens near Champaign?
Calamity.live data shows a weather event with CalamityScore 67/100, near Champaign (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.