This alert expired on 12 March 2026 at 07:00 UTC. It is kept here as a record.
No stronger detection stands among the 62 recorded within 20 km of this point since 9 March 2026 — 22 others scored the same. The last comparable one was on 9 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued March 11 at 10:21PM CDT until March 12 at 2:00AM CDT by NWS Jackson MS
An estimated 25,799 people live within 50 km of this point.
Nearby, since 9 March 2026
- June 18, 2026 · score 46 · 0.0 km
- June 2, 2026 · score 34 · 0.0 km
- May 7, 2026 · score 46 · 0.0 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 46 out of 100, at 84 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | high |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 84% |
| Coordinates | 32.7000, -89.7000 |
| Nearest City | Madison (48 km) |
| Population Exposed | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-12T03:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn-oid-2_49_0_1_840_0_4235a0d63f993c098191ddc423e6e5cf628f04d8_002_1 |
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Clarke, MS; Forrest, MS |
| Headline | Tornado Watch issued March 11 at 10:21PM CDT until March 12 at 2:00AM CDT by NWS Jackson MS |
| Expires | 2026-03-12T02:00:00-05:00 |
| SenderName | NWS Jackson MS |
| HasExactCoords | false |
| Iem TypeSummary | O |
| Iem City | 5 NNE JAN Airport |
| Iem County | Rankin |
| Iem State | MS |
| Iem Wfo | JAN |
| Iem Remark | Outflow boundary and a shower moved through the Spillway Rd area, radar and measured wind gusts ranged between 40-46 mph. A few power lines were downed. |
| MergedSources | [{"id":"iem_O_32.380_-90.030_1773269400000","source":"iem","severity":"low","severityValue":25,"timestamp":1773269400000,"latitude":32.38,"longitude":-90.03}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.