Right now
The most recent data we hold from NOAA arrived 4 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 28 June 2026 at 01:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 38 detections recorded within 20 km of this point since 3 April 2026. 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 June 27 at 6:13PM MDT until June 27 at 7:00PM MDT by NWS Rapid City SD
Nearby, since 3 April 2026
- June 7, 2026 · score 46 · 20.3 km
How we know
10 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 22 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 22 / 100 |
| Legacy data-support index | 0.68/1 |
| Coordinates | 45.9421, -103.7997 |
| Nearest City | Dickinson (130 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-28T00:13:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.d0187fc18a5055e4bccac1d0a6c61c25 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-28T00:13:00.000Z.
First archived: 2026-06-28T00:14:43.201Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Haakon, SD; Meade, SD; Pennington, SD; Harding, SD; Adams, ND; Bowman, ND; Slope, ND and 11 more areas |
| Headline | Severe Thunderstorm Warning issued June 27 at 6:13PM MDT until June 27 at 7:00PM MDT by NWS Rapid City SD |
| Expires | 2026-06-27T19:00:00-06:00 |
| SenderName | NWS Rapid City SD |
| HasExactCoords | true |
| MergedCount | 16 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.d0187fc18a5055e4bccac1d0a6c61c25f87ce093.001.1","noaa_urn:oid:2.49.0.1.840.0.7bbbd56ddd356b05bb5904b8e9deb3494749eb11.001.1","noaa_urn:oid:2.49.0.1.840.0.20d9ed05e9a85ab397f534df52fba658c007a081.001.1","noaa_urn:oid:2.49.0.1.840.0.ef77d9558f145527961be7d0f084c5e4c1bb0097.001.1","noaa_urn:oid:2.49.0.1.840.0.c47c604f9b53516d1c66a53f114ae3afcaba1583.001.1","noaa_urn:oid:2.49.0.1.840.0.c577431ca575d3c936a490c6ad010d28ebd615dd.001.1","noaa_urn:oid:2.49.0.1.840.0.285bbc18f3401d0b3eef39fc6a6869014fa38f63.001.1","noaa_urn:oid:2.49.0.1.840.0.beb705352ecefc86beed6222aff5c64133a50a52.001.1","noaa_urn:oid:2.49.0.1.840.0.5cc0a020f5ce173896dddba52049145d801869de.001.1","noaa_urn:oid:2.49.0.1.840.0.5b335a8e821e247cf1dce92407391034f396819c.001.1","noaa_urn:oid:2.49.0.1.840.0.7f11282284c2b0b805013dd239948daed4a52ca9.001.1","noaa_urn:oid:2.49.0.1.840.0.d918ddd6f6c7662b696d9aca7efe35ae58fcf9a3.001.1","noaa_urn:oid:2.49.0.1.840.0.7f06434f1ffdf38bc282024e0b60fde6276ff875.001.1","noaa_urn:oid:2.49.0.1.840.0.85be108b65875cdbf7b7997fac74fa70481de9b7.002.1","noaa_urn:oid:2.49.0.1.840.0.a422f01637740c45e017e79b16aac1ba4fecdd52.001.1","noaa_urn:oid:2.49.0.1.840.0.2e3e61672fd0d84a00b6b5dbdfa5fba4d001bfc2.001.1"] |
| Iem TypeSummary | C |
| Iem City | 8 SE Ekalaka |
| Iem County | Carter |
| Iem State | MT |
| Iem Wfo | BYZ |
| Iem Remark | Report from EM. |
| MergedSources | [{"id":"iem_G_45.830_-103.720_1782604800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782604800000,"latitude":45.83,"longitude":-103.72},{"id":"iem_H_45.740_-103.880_1782601920000","source":"iem","severity":"low","severityValue":25,"timestamp":1782601920000,"latitude":45.74,"longitude":-103.88},{"id":"iem_H_46.050_-103.890_1782603600000","source":"iem","severity":"low","severityValue":25,"timestamp":1782603600000,"latitude":46.05,"longitude":-103.89},{"id":"iem_H_46.470_-104.090_1782603480000","source":"iem","severity":"low","severityValue":25,"timestamp":1782603480000,"latitude":46.47,"longitude":-104.09},{"id":"iem_H_45.890_-104.550_1782598680000","source":"iem","severity":"low","severityValue":25,"timestamp":1782598680000,"latitude":45.89,"longitude":-104.55},{"id":"iem_H_45.500_-104.450_1782601800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782601800000,"latitude":45.5,"longitude":-104.45},{"id":"iem_H_46.030_-104.080_1782602880000","source":"iem","severity":"low","severityValue":25,"timestamp":1782602880000,"latitude":46.03,"longitude":-104.08},{"id":"iem_H_45.590_-103.670_1782602940000","source":"iem","severity":"low","severityValue":25,"timestamp":1782602940000,"latitude":45.59,"longitude":-103.67},{"id":"iem_C_45.820_-104.430_1782600300000","source":"iem","severity":"low","severityValue":25,"timestamp":1782600300000,"latitude":45.82,"longitude":-104.43}] |
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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