This alert expired on 9 May 2026 at 06:47 UTC. It is kept here as a record.
No stronger detection stands among the 69 recorded within 20 km of this point since 15 March 2026 — 54 others scored the same. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 9 at 1:37AM CDT until May 9 at 1:45AM CDT by NWS Shreveport LA
An estimated 279,507 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 15, 2026 · score 43 · 10.5 km
- June 2, 2026 · score 43 · 12.1 km
- May 23, 2026 · score 43 · 17.6 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 85% |
| Coordinates | 32.6155, -94.1255 |
| Nearest City | Marshall (24 km) |
| Population Exposed | 279.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T06:37:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d5ea3e25cfac0bde8bfe851cb71a235b |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Gregg, TX; Harrison, TX; Marion, TX; Upshur, TX; Bossier, LA; Caddo, LA; Harrison, TX; Marion, TX; Bossier, LA; Webster, LA |
| Headline | Severe Thunderstorm Warning issued May 9 at 1:37AM CDT until May 9 at 1:45AM CDT by NWS Shreveport LA |
| Expires | 2026-05-09T01:47:00-05:00 |
| SenderName | NWS Shreveport LA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d5ea3e25cfac0bde8bfe851cb71a235bb4437f7f.001.1","noaa_urn:oid:2.49.0.1.840.0.a358766995e7877bdf8402df9218d39becc50f01.001.1","noaa_urn:oid:2.49.0.1.840.0.c5d0c9b2929a3d2b110a0471f54a42387dda1fbf.001.1"] |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 WNW Ore City |
| Iem County | Upshur |
| Iem State | TX |
| Iem Wfo | SHV |
| Iem Remark | Hail to the size of quarters reported in Ore City, Texas. |
| MergedSources | [{"id":"iem_H_32.800_-94.730_1778303580000","source":"iem","severity":"low","severityValue":25,"timestamp":1778303580000,"latitude":32.8,"longitude":-94.73}] |
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 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 43/100, near Marshall (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.