This alert expired on 15 March 2026 at 22:45 UTC. It is kept here as a record.
It is the 17th strongest of the 78 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 15 at 5:27PM CDT until March 15 at 5:45PM CDT by NWS St Louis MO
An estimated 24,196 people live within 50 km of this point.
Nearby, since 15 March 2026
- May 30, 2026 · score 32 · 14.2 km
- March 16, 2026 · score 43 · 18.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 80 % 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 | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 35.4967, -92.1054 |
| Nearest City | Searcy (43 km) |
| Population Exposed | 24.2K within 50 km |
| Impact Tier | significant |
| Date | 2026-03-15 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.2fd94a34c253d6cae6105f38b6ce3b39 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Reynolds, MO; Carter, MO; Ripley, MO; Madison, IL; Monroe, IL; St. Clair, IL and 16 more areas |
| Headline | Severe Thunderstorm Warning issued March 15 at 5:27PM CDT until March 15 at 5:45PM CDT by NWS St Louis MO |
| Expires | 2026-03-15T17:45:00-05:00 |
| SenderName | NWS St Louis MO |
| HasExactCoords | true |
| MergedCount | 19 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.2fd94a34c253d6cae6105f38b6ce3b3907f2b9f4.001.1","noaa_urn:oid:2.49.0.1.840.0.81e251bc2a3676ea4a87ca6ab1713e862486507a.001.1","noaa_urn:oid:2.49.0.1.840.0.febde32990300f4e65e67c27d078a987c81bf944.002.1","noaa_urn:oid:2.49.0.1.840.0.053b48e3ddf9b758870923c5ac0d761ce200aa1b.001.1","noaa_urn:oid:2.49.0.1.840.0.3a6c19d6baea94617fa53447bbf7235888dd902a.001.1","noaa_urn:oid:2.49.0.1.840.0.596970c27aaedcb5c4226df8904886baad6232ca.002.1","noaa_urn:oid:2.49.0.1.840.0.9d2b6f5ef05da762f631ab272d74a55d37169f6c.001.1","noaa_urn:oid:2.49.0.1.840.0.118113ecc401096dc0bd41c4f5cfad6916612fcd.001.1","noaa_urn:oid:2.49.0.1.840.0.b1ae23f2819d09847d13d4b3efeac1f23437237d.001.1","noaa_urn:oid:2.49.0.1.840.0.28958da71783616b9cdb017490d8d2091e29fe66.001.1","noaa_urn:oid:2.49.0.1.840.0.49dc41ffbf3e47d188b5c4ce0e3d02282c8486d4.002.1","noaa_urn:oid:2.49.0.1.840.0.c6ef745b872a37583a2434ae051f57429377a303.001.1","noaa_urn:oid:2.49.0.1.840.0.3f41c135ab37a648393a558c727874b06ddd54e0.001.1","noaa_urn:oid:2.49.0.1.840.0.6157fa90c532c6a2684307f7b7e4e493263b9970.001.1","noaa_urn:oid:2.49.0.1.840.0.1bcd4cc2f5df3e31f1f98b7962236357db3014ae.001.1","noaa_urn:oid:2.49.0.1.840.0.c4fe3b5401bccb9b32221e7911f109a01681a622.002.1","noaa_urn:oid:2.49.0.1.840.0.85cd7a395d861cfbc2d04eca69b4702664e8b35c.001.1","noaa_urn:oid:2.49.0.1.840.0.f90c73c7ffb1f56d947f07cb3719149bb397f4bd.001.1","noaa_urn:oid:2.49.0.1.840.0.3c53c7b141ae3912c9804e5b0f7b989ebcce7e44.001.1"] |
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.
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Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.