Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 13 May 2026 at 23:31 UTC. It is kept here as a record.
No stronger detection stands among the 43 recorded within 20 km of this point since 2 April 2026 — 4 others scored the same. 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 May 13 at 5:21PM MDT until May 13 at 5:30PM MDT by NWS Riverton WY
An estimated 86,847 people live within 50 km of this point.
Nearby, since 2 April 2026
- August 13, 2026 · score 39 · 13.2 km
How we know
Confirmed by 28 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 91 % 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) | 39 / 100 |
| Our confidence | 91% |
| Coordinates | 43.6869, -111.5269 |
| Nearest City | Rexburg (26 km) |
| Population Exposed | 86.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-13T23:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.7f7e57810975c28edd7f69585c3ff5b9 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Park, WY; Teton, WY; Bear Lake, ID; Bingham, ID; Bonneville, ID; Caribou, ID; Madison, ID; Teton, ID; Blaine, ID; Butte, ID; Cassia, ID; Minidoka, ID; Power, ID and 1 more areas |
| Headline | Severe Thunderstorm Warning issued May 13 at 5:21PM MDT until May 13 at 5:30PM MDT by NWS Riverton WY |
| Expires | 2026-05-13T17:31:00-06:00 |
| SenderName | NWS Riverton WY |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7f7e57810975c28edd7f69585c3ff5b99fc9372e.001.1","noaa_urn:oid:2.49.0.1.840.0.ed1cd81d7552a2baf60e5a7e93b485c66b76797c.002.1","noaa_urn:oid:2.49.0.1.840.0.c1af1e19d7b665753db614fafda3ce000131c039.001.1","noaa_urn:oid:2.49.0.1.840.0.76ba5e2983540a2209282d68a68a7269f74a095b.001.1"] |
| Iem TypeSummary | D |
| Iem City | Menan |
| Iem County | Jefferson |
| Iem State | ID |
| Iem Wfo | PIH |
| Iem Remark | power outages. |
| MergedSources | [{"id":"iem_D_43.530_-111.930_1778711220000","source":"iem","severity":"low","severityValue":25,"timestamp":1778711220000,"latitude":43.53,"longitude":-111.93},{"id":"iem_D_44.000_-112.020_1778702040000","source":"iem","severity":"low","severityValue":25,"timestamp":1778702040000,"latitude":44,"longitude":-112.02},{"id":"iem_G_43.710_-111.340_1778702400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778702400000,"latitude":43.71,"longitude":-111.34},{"id":"iem_G_44.010_-112.240_1778700300000","source":"iem","severity":"low","severityValue":25,"timestamp":1778700300000,"latitude":44.01,"longitude":-112.24},{"id":"iem_G_44.010_-112.230_1778700600000","source":"iem","severity":"low","severityValue":25,"timestamp":1778700600000,"latitude":44.01,"longitude":-112.23},{"id":"iem_D_43.720_-112.230_1778706840000","source":"iem","severity":"low","severityValue":25,"timestamp":1778706840000,"latitude":43.72,"longitude":-112.23},{"id":"iem_N_43.830_-111.800_1778709180000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709180000,"latitude":43.83,"longitude":-111.8},{"id":"iem_D_43.530_-111.930_1778701920000","source":"iem","severity":"low","severityValue":25,"timestamp":1778701920000,"latitude":43.53,"longitude":-111.93},{"id":"iem_D_43.650_-112.230_1778707020000","source":"iem","severity":"low","severityValue":25,"timestamp":1778707020000,"latitude":43.65,"longitude":-112.23},{"id":"iem_G_43.810_-111.420_1778702400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778702400000,"latitude":43.81,"longitude":-111.42},{"id":"iem_G_43.710_-111.340_1778699700000","source":"iem","severity":"low","severityValue":25,"timestamp":1778699700000,"latitude":43.71,"longitude":-111.34},{"id":"iem_G_43.880_-111.360_1778702400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778702400000,"latitude":43.88,"longitude":-111.36},{"id":"iem_G_43.740_-112.130_1778707800000","source":"iem","severity":"low","severityValue":25,"timestamp":1778707800000,"latitude":43.74,"longitude":-112.13},{"id":"iem_D_43.720_-112.130_1778710140000","source":"iem","severity":"low","severityValue":25,"timestamp":1778710140000,"latitude":43.72,"longitude":-112.13},{"id":"iem_G_43.550_-112.330_1778707200000","source":"iem","severity":"low","severityValue":25,"timestamp":1778707200000,"latitude":43.55,"longitude":-112.33},{"id":"iem_G_43.430_-111.860_1778711400000","source":"iem","severity":"low","severityValue":25,"timestamp":1778711400000,"latitude":43.43,"longitude":-111.86},{"id":"iem_D_43.680_-111.930_1778709780000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709780000,"latitude":43.68,"longitude":-111.93},{"id":"iem_G_43.830_-111.800_1778709240000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709240000,"latitude":43.83,"longitude":-111.8},{"id":"iem_G_43.830_-111.800_1778709180000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709180000,"latitude":43.83,"longitude":-111.8},{"id":"iem_G_43.550_-112.420_1778706000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778706000000,"latitude":43.55,"longitude":-112.42},{"id":"iem_D_44.000_-112.220_1778709240000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709240000,"latitude":44,"longitude":-112.22},{"id":"iem_D_43.870_-111.840_1778713860000","source":"iem","severity":"low","severityValue":25,"timestamp":1778713860000,"latitude":43.87,"longitude":-111.84},{"id":"iem_D_43.870_-111.750_1778709420000","source":"iem","severity":"low","severityValue":25,"timestamp":1778709420000,"latitude":43.87,"longitude":-111.75},{"id":"iem_D_43.620_-112.130_1778710080000","source":"iem","severity":"low","severityValue":25,"timestamp":1778710080000,"latitude":43.62,"longitude":-112.13},{"id":"iem_G_43.550_-112.330_1778700000000","source":"iem","severity":"low","severityValue":25,"timestamp":1778700000000,"latitude":43.55,"longitude":-112.33},{"id":"iem_D_43.910_-111.510_1778708340000","source":"iem","severity":"low","severityValue":25,"timestamp":1778708340000,"latitude":43.91,"longitude":-111.51},{"id":"iem_D_43.720_-111.990_1778710980000","source":"iem","severity":"low","severityValue":25,"timestamp":1778710980000,"latitude":43.72,"longitude":-111.99}] |
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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