Right now
The most recent data we hold from NOAA arrived 27 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
This alert expired on 19 May 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 180 recorded within 20 km of this point since 27 April 2026 — 25 others scored the same. Another comparable one was recorded here earlier the same day. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued May 18 at 1:59PM CDT until May 18 at 8:00PM CDT by NWS Omaha/Valley NE
Nearby, since 27 April 2026
- September 5, 2026 · score 16 · 0.0 km
- August 31, 2026 · score 16 · 0.0 km
- August 12, 2026 · score 22 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 59 % 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) | 34 / 100 |
| Our confidence | 59% |
| Coordinates | 41.5000, -99.9000 |
| Nearest City | North Platte (84 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-18T18:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.a1ac67260aa68122172443e910bc8c2b |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Otoe, NE; Gage, NE; Jefferson, NE; Johnson, NE; Nemaha, NE; Pawnee, NE; Richardson, NE |
| Headline | Tornado Watch issued May 18 at 1:59PM CDT until May 18 at 8:00PM CDT by NWS Omaha/Valley NE |
| Expires | 2026-05-18T20:00:00-05:00 |
| SenderName | NWS Omaha/Valley NE |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a1ac67260aa68122172443e910bc8c2b6a8abc13.001.1","noaa_urn:oid:2.49.0.1.840.0.a1ac67260aa68122172443e910bc8c2b6a8abc13.002.1"] |
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 in this area?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.