This alert expired on 16 March 2026 at 07:00 UTC. It is kept here as a record.
It is the 4th strongest of the 454 detections recorded within 20 km of this point since 10 March 2026. The last comparable one was on 15 March 2026. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued March 15 at 8:27PM EDT until March 16 at 3:00AM EDT by NWS Louisville KY
An estimated 1,525,459 people live within 50 km of this point.
Nearby, since 10 March 2026
- July 27, 2026 · score 52 · 0.0 km
- June 21, 2026 · score 64 · 0.0 km
- June 6, 2026 · score 52 · 0.0 km
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 64 out of 100, at 87 % 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 | High |
| Calamity Score (ours) | 64 / 100 |
| Our confidence | 87% |
| Coordinates | 39.8000, -86.1000 |
| Nearest City | Indianapolis (6 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-16T00:27:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.3ba7079d4778fd70256ae2c45b737c62 |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Clark, IN; Crawford, IN; Dubois, IN; Floyd, IN; Harrison, IN; Jefferson, IN; Orange, IN; Perry, IN; Scott, IN; Washington, IN; Adair, KY; Allen, KY; Anderson, KY; Barren, KY; Boyle, KY; Breckinridge, KY; Bullitt, KY; Butler, KY; Casey, KY; Clinton, KY; Cumberland, KY; Edmonson, KY; Franklin, KY; Grayson, KY; Green, KY; Hancock, KY; Hardin, KY; Hart, KY; Henry, KY; Jefferson, KY; Larue, KY; Logan, KY; Marion, KY; Meade, KY; Mercer, KY; Metcalfe, KY; Monroe, KY; Nelson, KY; Ohio, KY; Oldham, KY; Russell, KY; Shelby, KY; Simpson, KY; Spencer, KY; Taylor, KY; Trimble, KY; Warren, KY; Washington, KY; Woodford, KY; Bartholomew, IN; Boone, IN; Brown, IN; Carroll, IN; Clay, IN; Clinton, IN; Daviess, IN; Decatur, IN; Fountain, IN; Greene, IN; Hamilton, IN; Hancock, IN; Hendricks, IN; Howard, IN; Jackson, IN; Jennings, IN; Johnson, IN; Knox, IN; Lawrence, IN; Madison, IN; Marion, IN; Martin, IN; Monroe, IN; Montgomery, IN; Morgan, IN; Owen, IN; Parke, IN; Putnam, IN; Rush, IN; Shelby, IN; Sullivan, IN; Tippecanoe, IN; Tipton, IN; Vermillion, IN; Vigo, IN; Warren, IN; Ripley, IN; Switzerland, IN; Carroll, KY; Gallatin, KY; Owen, KY |
| Headline | Tornado Watch issued March 15 at 8:27PM EDT until March 16 at 3:00AM EDT by NWS Louisville KY |
| Expires | 2026-03-16T03:00:00-04:00 |
| SenderName | NWS Louisville KY |
| HasExactCoords | false |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.3ba7079d4778fd70256ae2c45b737c620f10a993.001.1","noaa_urn:oid:2.49.0.1.840.0.f9ecb0d6ac2b11d5a462a6850fd73f62252590aa.001.1","noaa_urn:oid:2.49.0.1.840.0.40969117c92a5b1915e31efd58d9ee8bf1122ab0.001.1"] |
| Iem TypeSummary | N |
| Iem Magnitude | 50 |
| Iem Unit | MPH |
| Iem City | 1 SSE Eagle Creek Reser |
| Iem County | Marion |
| Iem State | IN |
| Iem Wfo | IND |
| MergedSources | [{"id":"iem_N_39.360_-85.910_1773600360000","source":"iem","severity":"low","severityValue":25,"timestamp":1773600360000,"latitude":39.36,"longitude":-85.91},{"id":"iem_N_39.830_-86.300_1773605580000","source":"iem","severity":"low","severityValue":25,"timestamp":1773605580000,"latitude":39.83,"longitude":-86.3},{"id":"iem_N_39.720_-86.300_1773605040000","source":"iem","severity":"low","severityValue":25,"timestamp":1773605040000,"latitude":39.72,"longitude":-86.3},{"id":"iem_O_39.670_-85.700_1773604500000","source":"iem","severity":"low","severityValue":25,"timestamp":1773604500000,"latitude":39.67,"longitude":-85.7},{"id":"iem_O_39.660_-85.650_1773599880000","source":"iem","severity":"low","severityValue":25,"timestamp":1773599880000,"latitude":39.66,"longitude":-85.65},{"id":"iem_N_40.270_-86.570_1773604500000","source":"iem","severity":"low","severityValue":25,"timestamp":1773604500000,"latitude":40.27,"longitude":-86.57},{"id":"iem_N_39.830_-86.290_1773605580000","source":"iem","severity":"low","severityValue":25,"timestamp":1773605580000,"latitude":39.83,"longitude":-86.29}] |
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 Indianapolis?
Calamity.live data shows a weather event with CalamityScore 64/100, near Indianapolis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.