Right now
The most recent data we hold from NOAA arrived 7 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 August 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 19 March 2026 — one other 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 August 13 at 5:39PM EDT until August 13 at 6:30PM EDT by NWS Gray ME
Urban PEI: 109,408 within a heuristic 50 km radius; not unique people.
Nearby, since 19 March 2026
- June 28, 2026 · score 43 · 19.7 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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) | 43 / 100 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 44.1080, -69.7425 |
| Nearest City | Augusta (23 km) |
| Urban exposure index (PEI) | 109.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T21:39:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.6705a69924a517b3142150a995cbd1a0 |
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: 2026-08-13T21:39:00.000Z.
First archived: 2026-08-13T21:58:27.098Z. 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 | Kennebec, ME; Knox, ME; Lincoln, ME; Sagadahoc, ME; Androscoggin, ME; Kennebec, ME; Sagadahoc, ME |
| Headline | Severe Thunderstorm Warning issued August 13 at 5:39PM EDT until August 13 at 6:30PM EDT by NWS Gray ME |
| Expires | 2026-08-13T18:30:00-04:00 |
| SenderName | NWS Gray ME |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.6705a69924a517b3142150a995cbd1a0908fbbb4.001.1","noaa_urn:oid:2.49.0.1.840.0.9cafcf3b3c1ae3435395c22b060aa265ce314010.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 NNE Jefferson |
| Iem County | Knox |
| Iem State | ME |
| Iem Wfo | GYX |
| Iem Remark | Tree on wires. |
| MergedSources | [{"id":"iem_D_43.680_-70.350_1786649220000","source":"iem","severity":"low","severityValue":25,"timestamp":1786649220000,"latitude":43.68,"longitude":-70.35},{"id":"iem_D_43.620_-70.300_1786648980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786648980000,"latitude":43.62,"longitude":-70.3},{"id":"iem_M_43.590_-70.210_1786649820000","source":"iem","severity":"low","severityValue":25,"timestamp":1786649820000,"latitude":43.59,"longitude":-70.21},{"id":"iem_D_44.240_-69.380_1786652700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786652700000,"latitude":44.24,"longitude":-69.38},{"id":"iem_H_43.620_-70.300_1786648980000","source":"iem","severity":"low","severityValue":25,"timestamp":1786648980000,"latitude":43.62,"longitude":-70.3},{"id":"iem_G_43.650_-70.300_1786649220000","source":"iem","severity":"low","severityValue":25,"timestamp":1786649220000,"latitude":43.65,"longitude":-70.3},{"id":"iem_D_43.610_-70.270_1786649820000","source":"iem","severity":"low","severityValue":25,"timestamp":1786649820000,"latitude":43.61,"longitude":-70.27},{"id":"iem_D_44.250_-69.420_1786652460000","source":"iem","severity":"low","severityValue":25,"timestamp":1786652460000,"latitude":44.25,"longitude":-69.42}] |
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.
Review the area, threshold and delivery channel in your account.
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