{
  "id": "2026-08-12-university-of-alaska-southeast-glacial-lake-outburst-flood",
  "slug": "university-of-alaska-southeast-glacial-lake-outburst-flood-2026-08-12",
  "institution": {
    "name": "University of Alaska Southeast",
    "shortName": "UAS",
    "state": "AK",
    "type": "public-masters",
    "alertSystemName": "UAS Alerts",
    "enrollment": 2000
  },
  "incident": {
    "date": "2026-08-12",
    "type": "flood",
    "cleryCategory": "advisory",
    "resolution": "resolved",
    "headline": "Glacial lake outburst with campus outside the flood zone",
    "headlinePublic": "Glacial lake outburst with campus outside the flood zone",
    "summary": "UAS [posted official Juneau-campus updates](https://uas.alaska.edu/alerts/) as Suicide Basin drained in the Aug. 12-13, 2026 glacial lake outburst flood. The Juneau campus, including housing, was not in the evacuation zone and operated on regular summer hours.",
    "outcome": "Flood threat ended Aug. 13; no direct campus impacts. Evacuated city areas reopened to residents."
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "initial",
      "timestamp": "2026-08-11T08:35:00-08:00",
      "channel": "website",
      "verbatimText": "The National Weather Service in Juneau announced that Suicide Basin is full at 8:35 a.m. on Tuesday, Aug. 11. Historically, a basin release has occurred 1-6 days after the basin reaches capacity.\n\nThe UAS Juneau campus, including campus housing, is not located in the flood evacuation zone. We do not anticipate any direct impacts to campus.\n\nAreas around Mendenhall Lake and Mendenhall River in the nearby Mendenhall Valley may experience flooding. If you have not yet, now is the time to prepare:\n\nSee the CBJ Guide to Flood Preparedness to sign up for emergency alerts, view the evacuation advisory map, find out how to prepare, and access public flood response resources.\n\nAdditional resources are available to Juneau-based University of Alaska students and employees. Find more information below.",
      "isVerbatimConfirmed": true,
      "confidence": "high",
      "sourceUrl": "https://uas.alaska.edu/alerts/",
      "sourceDescription": "UAS official alerts page dated 08/11/26 8:35 a.m. update",
      "annotations": [
        "Dual independent fetch of uas.alaska.edu/alerts 2026-08-16; HTML byte-identical. sha256 of this body recorded in ledger.",
        "NBSP flattened to space. Link labels kept as visible text (announced; Guide to Flood Preparedness).",
        "Thread checked N/A (official web log, not X).",
        "Distinct incident from 2024-08-06-university-of-alaska-southeast-glacial-outburst-flood: different year and basin-release cycle."
      ],
      "characterCount": 801
    },
    {
      "sequence": 2,
      "type": "update",
      "timestamp": "2026-08-11T16:48:00-08:00",
      "channel": "website",
      "verbatimText": "The National Weather Service in Juneau announced that Suicide Basin in Mendenhall Glacier is draining at 4:48 p.m. on Tuesday, Aug. 11.\n\nThe floodwaters in Mendenhall Lake and the Mendenhall River have historically crested 24-48 hours after this main basin release begins. Flooding is expected late Wednesday thru early Thursday.\n\nThe UAS Juneau campus, including campus housing, is not located in the flood zone. We do not anticipate any direct impacts to campus. The Juneau campus is operating normally and open regular summer hours.\n\nFor those spending time off campus, please take steps to ensure your safety. If you are in the flood evacuation zone, evacuation is advised.\n\nSee the City and Borough of Juneau's Guide to Flood Preparedness to view the evacuation advisory map and access public resources such as emergency shelter (including for pets), evacuation routes, vehicle parking, and the CBJ Flood Information Hotline.\n\nAdditional resources are available to Juneau-based University of Alaska students and employees, including temporary on-campus housing, parking and more. See section below: UAS flood response: Resources for students and employees.",
      "isVerbatimConfirmed": true,
      "confidence": "high",
      "sourceUrl": "https://uas.alaska.edu/alerts/",
      "sourceDescription": "UAS official alerts page dated 8/11/26 4:48 p.m. update",
      "annotations": [
        "Dual independent fetch 2026-08-16. Same page as sequence 1.",
        "Curly apostrophe in Juneau's flattened to ASCII apostrophe."
      ],
      "characterCount": 1161
    },
    {
      "sequence": 3,
      "type": "all-clear",
      "timestamp": "2026-08-13T17:00:00-08:00",
      "channel": "website",
      "verbatimText": "The Glacial Lake Outburst Flood Unified Command announced that the flood threat from Suicide Basin has ended. The water has receded. Evacuated areas are open to residents.",
      "isVerbatimConfirmed": true,
      "confidence": "high",
      "sourceUrl": "https://uas.alaska.edu/alerts/",
      "sourceDescription": "UAS official alerts page dated 08/13/26 5 p.m. update",
      "annotations": [
        "Dual independent fetch 2026-08-16. Unified Command all-clear for the Suicide Basin flood threat."
      ],
      "characterCount": 171
    }
  ],
  "context": "UAS posts Juneau-campus incident notices on [uas.alaska.edu/alerts](https://uas.alaska.edu/alerts/). The systemwide Rave feed getrave.com/rss/alaska/channel2 is a UAA Anchorage product, not this campus.",
  "keyFindings": [
    "Three dated official updates: basin full, basin draining with off-campus evacuation advice, then flood threat ended. Campus itself stayed outside the zone."
  ],
  "sources": [
    {
      "title": "UAS alerts: Juneau glacial lake outburst flood",
      "url": "https://uas.alaska.edu/alerts/",
      "type": "official-archive",
      "accessDate": "2026-08-16",
      "archiveUrl": null,
      "archiveNotes": "SPN 523 at capture; archive.org save endpoint unavailable or throttled"
    }
  ],
  "confidence": "high",
  "tags": [
    "public-masters",
    "alaska",
    "uas",
    "flood",
    "glacial-outburst"
  ],
  "dateAdded": "2026-08-16",
  "lastUpdated": "2026-08-16",
  "addedBy": "ingestion"
}