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 18 May 2026 at 22:00 UTC. It is kept here as a record.
It is the 67th strongest of the 551 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 18 at 10:03AM CDT until May 18 at 5:00PM CDT by NWS Chicago IL
An estimated 450,012 people live within 50 km of this point.
Nearby, since 10 March 2026
- August 11, 2026 · score 43 · 0.0 km
- August 10, 2026 · score 43 · 0.0 km
- July 26, 2026 · score 43 · 0.0 km
How we know
Confirmed by 9 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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 | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 40.6000, -89.4000 |
| Nearest City | Morton (5 km) |
| Population Exposed | 450.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T15:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.af0112d6e1b3ad5da16a3a449cdf4ed4 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Cook, IL; DuPage, IL; Ford, IL; Grundy, IL; Iroquois, IL; Kankakee, IL; Kendall, IL; Livingston, IL; Will, IL; Benton, IN; Jasper, IN; Lake, IN; Newton, IN; Porter, IN; Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Northerly Island to Calumet Harbor IL; Calumet Harbor IL to Gary IN; Gary to Burns Harbor IN; Burns Harbor to Michigan City IN; Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake; Champaign, IL; Clark, IL; Clay, IL; Coles, IL; Crawford, IL; Cumberland, IL; Douglas, IL; Edgar, IL; Effingham, IL; Jasper, IL; Lawrence, IL; Moultrie, IL; Piatt, IL; Richland, IL; Shelby, IL; Vermilion, IL |
| Headline | Severe Thunderstorm Watch issued May 18 at 10:03AM CDT until May 18 at 5:00PM CDT by NWS Chicago IL |
| Expires | 2026-05-18T17:00:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.af0112d6e1b3ad5da16a3a449cdf4ed4f07d9591.001.1","noaa_urn:oid:2.49.0.1.840.0.af0112d6e1b3ad5da16a3a449cdf4ed4f07d9591.002.1","noaa_urn:oid:2.49.0.1.840.0.887e65b6a93f0535ad052df7382bdcfd113e3da1.001.1"] |
| Iem TypeSummary | D |
| Iem City | 4 SSW Kingston Mines |
| Iem County | Tazewell |
| Iem State | IL |
| Iem Wfo | ILX |
| Iem Remark | Power pole down across the road near Spring Lake. |
| MergedSources | [{"id":"iem_D_40.490_-89.830_1779110580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779110580000,"latitude":40.49,"longitude":-89.83},{"id":"iem_D_40.430_-89.380_1779112680000","source":"iem","severity":"low","severityValue":25,"timestamp":1779112680000,"latitude":40.43,"longitude":-89.38},{"id":"iem_D_40.510_-89.790_1779110760000","source":"iem","severity":"low","severityValue":25,"timestamp":1779110760000,"latitude":40.51,"longitude":-89.79},{"id":"iem_D_40.580_-89.640_1779111480000","source":"iem","severity":"low","severityValue":25,"timestamp":1779111480000,"latitude":40.58,"longitude":-89.64},{"id":"iem_D_40.440_-89.310_1779113700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779113700000,"latitude":40.44,"longitude":-89.31},{"id":"iem_D_40.350_-89.960_1779109920000","source":"iem","severity":"low","severityValue":25,"timestamp":1779109920000,"latitude":40.35,"longitude":-89.96},{"id":"iem_G_40.790_-89.200_1779113700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779113700000,"latitude":40.79,"longitude":-89.2},{"id":"iem_D_40.510_-89.790_1779110580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779110580000,"latitude":40.51,"longitude":-89.79}] |
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.
Want to know when something happens near Morton?
Calamity.live data shows a weather event with CalamityScore 43/100, near Morton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.