Severe Thunderstorm Watch
Severe Thunderstorm Watch issued May 18 at 3:56PM EDT until May 18 at 6:00PM EDT by NWS Northern Indiana
Geographic Context
This weather event occurred near Indianapolis (approximately 6 km away) in United States, an area that experiences a range of natural hazards. An estimated 1.5M people live within 50 km of the event location, placing this in the "significant" population impact tier.
Event Assessment
This event is a weather event classified as medium severity. Calamity.live has classified it as "medium" severity with a severity value of 50. The computed Calamity Score is 52 out of 100, reflecting a moderate-impact event. The primary scoring components are: population (100), historical (80), intensity (35). Data for this event was sourced from noaa, one of the 196 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
United States has a documented history of weather events. Monitoring for weather events in the region relies on a combination of ground-based sensors, satellite remote sensing, and official reporting from national agencies. The frequency and severity of such events are tracked over time to support risk assessment and emergency preparedness.
Event Data
| Type | Weather |
| Severity | medium |
| Severity Value | 50 |
| Calamity Score | 52 / 100 |
| Confidence | 89% |
| Coordinates | 39.8000, -86.1000 |
| Nearest City | Indianapolis (6 km) |
| Population Exposed | 1.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-18T19:56:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Adams, IN; Jay, IN; Hillsdale, MI; Allen, OH; Defiance, OH; Fulton, OH; Henry, OH; Paulding, OH; Putnam, OH; Van Wert, OH; Williams, OH; Clay, IN; Delaware, IN; Hancock, IN; Henry, IN; Johnson, IN; Madison, IN; Marion, IN; Morgan, IN; Owen, IN; Randolph, IN; Shelby, IN; Sullivan, IN |
| Headline | Severe Thunderstorm Watch issued May 18 at 3:56PM EDT until May 18 at 6:00PM EDT by NWS Northern Indiana |
| Expires | 2026-05-18T18:00:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.871c5cb30be70a6c95efa0caa985e4087e321939.002.1","noaa_urn:oid:2.49.0.1.840.0.eb7dd0e340ce925163c10d3ea08851f032a70416.002.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 61 |
| Iem Unit | MPH |
| Iem City | 6 ENE Whitestown |
| Iem County | Boone |
| Iem State | IN |
| Iem Wfo | IND |
| Iem Remark | Indianapolis Executive Airport measured a wind gust of 61 mph. |
| MergedSources | [{"id":"iem_D_39.960_-86.300_1779128940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779128940000,"latitude":39.96,"longitude":-86.3},{"id":"iem_G_39.760_-86.230_1779129600000","source":"iem","severity":"low","severityValue":25,"timestamp":1779129600000,"latitude":39.76,"longitude":-86.23},{"id":"iem_R_39.660_-86.850_1779133500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779133500000,"latitude":39.66,"longitude":-86.85},{"id":"iem_R_39.570_-86.120_1779134220000","source":"iem","severity":"low","severityValue":25,"timestamp":1779134220000,"latitude":39.57,"longitude":-86.12},{"id":"iem_R_39.860_-86.130_1779135060000","source":"iem","severity":"low","severityValue":25,"timestamp":1779135060000,"latitude":39.86,"longitude":-86.13},{"id":"iem_G_40.030_-86.250_1779129300000","source":"iem","severity":"low","severityValue":25,"timestamp":1779129300000,"latitude":40.03,"longitude":-86.25}] |
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.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 52/100, near Indianapolis (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 196 scientific monitoring sources.