Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
This alert expired on 20 May 2026 at 02:00 UTC. It is kept here as a record.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued May 19 at 6:03PM EDT until May 19 at 10:00PM EDT by NWS Indianapolis IN
Urban PEI: 1,525,459 within a heuristic 50 km radius; not unique people.
How we know
12 recorded sources include NOAA; independence is not established by this count.
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 | 0.90/1 |
| Coordinates | 39.8000, -86.1000 |
| Nearest City | Indianapolis (6 km) |
| Urban exposure index (PEI) | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-19T22:03:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.0626519ec1add396b3c3b909ba87e3a0 |
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: 2026-05-19T22:03:00.000Z.
First archived: 2026-05-19T23:08:53.871Z. 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 | Bartholomew, IN; Brown, IN; Daviess, IN; Decatur, IN; Greene, IN; Hancock, IN; Henry, IN; Jackson, IN; Jennings, IN; Johnson, IN; Lawrence, IN; Martin, IN; Monroe, IN; Morgan, IN; Owen, IN; Randolph, IN; Rush, IN; Shelby, IN; Dearborn, IN; Fayette, IN; Franklin, IN; Ripley, IN; Union, IN; Wayne, IN; Auglaize, OH; Butler, OH; Champaign, OH; Clark, OH; Darke, OH; Greene, OH; Hamilton, OH; Hardin, OH; Logan, OH; Mercer, OH; Miami, OH; Montgomery, OH; Preble, OH; Shelby, OH; Union, OH; Warren, OH |
| Headline | Severe Thunderstorm Watch issued May 19 at 6:03PM EDT until May 19 at 10:00PM EDT by NWS Indianapolis IN |
| Expires | 2026-05-19T22:00:00-04:00 |
| SenderName | NWS Indianapolis IN |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0626519ec1add396b3c3b909ba87e3a0667db9e9.002.1","noaa_urn:oid:2.49.0.1.840.0.5a58b207d709c003524e4df99b372ce9dabcab77.001.1"] |
| Iem TypeSummary | D |
| Iem City | Lizton |
| Iem County | Hendricks |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | A couple smaller trees and one large tree were blown down by thunderstorm winds. Time is estimated from radar. |
| MergedSources | [{"id":"iem_D_40.220_-86.030_1779220620000","source":"iem","severity":"low","severityValue":25,"timestamp":1779220620000,"latitude":40.22,"longitude":-86.03},{"id":"iem_D_39.960_-86.130_1779224040000","source":"iem","severity":"low","severityValue":25,"timestamp":1779224040000,"latitude":39.96,"longitude":-86.13},{"id":"iem_D_40.030_-85.920_1779225360000","source":"iem","severity":"low","severityValue":25,"timestamp":1779225360000,"latitude":40.03,"longitude":-85.92},{"id":"iem_G_39.260_-85.900_1779227100000","source":"iem","severity":"low","severityValue":25,"timestamp":1779227100000,"latitude":39.26,"longitude":-85.9},{"id":"iem_D_39.960_-85.950_1779225060000","source":"iem","severity":"low","severityValue":25,"timestamp":1779225060000,"latitude":39.96,"longitude":-85.95},{"id":"iem_D_40.000_-86.130_1779223920000","source":"iem","severity":"low","severityValue":25,"timestamp":1779223920000,"latitude":40,"longitude":-86.13},{"id":"iem_D_39.960_-86.130_1779224340000","source":"iem","severity":"low","severityValue":25,"timestamp":1779224340000,"latitude":39.96,"longitude":-86.13},{"id":"iem_D_40.050_-86.010_1779224160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779224160000,"latitude":40.05,"longitude":-86.01},{"id":"iem_D_40.030_-85.920_1779224160000","source":"iem","severity":"low","severityValue":25,"timestamp":1779224160000,"latitude":40.03,"longitude":-85.92},{"id":"iem_D_40.000_-85.900_1779225240000","source":"iem","severity":"low","severityValue":25,"timestamp":1779225240000,"latitude":40,"longitude":-85.9},{"id":"iem_D_39.890_-86.540_1779221460000","source":"iem","severity":"low","severityValue":25,"timestamp":1779221460000,"latitude":39.89,"longitude":-86.54}] |
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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