{
  "id": "2026-06-11-university-of-iowa-tornado-and-severe-thunderstorm-cascade",
  "slug": "university-of-iowa-tornado-and-severe-thunderstorm-cascade-2026-06-11",
  "institution": {
    "name": "University of Iowa",
    "shortName": "Iowa",
    "state": "IA",
    "type": "public-r1",
    "alertSystemName": "Hawk Alert / Crime Alert",
    "enrollment": 30000
  },
  "incident": {
    "date": "2026-06-11",
    "type": "tornado",
    "cleryCategory": "emergency-notification",
    "resolution": "resolved",
    "headline": "Tornado and severe thunderstorm Hawk Alerts with seek-shelter guidance",
    "headlinePublic": "Tornado and severe thunderstorm Hawk Alerts with seek-shelter guidance",
    "summary": "On the morning of Thursday, June 11, 2026, the University of Iowa issued a cascade of [Hawk Alerts](https://emergency.uiowa.edu/hawk-alert-nws-tornado-warning-until-945am-includes-parts-johnson-county-seek-immediate-shelter) for NWS severe thunderstorm and tornado warnings covering parts of Johnson County, each directing the community to seek shelter, then cancelled all weather-related Hawk Alerts and resumed normal activity.",
    "outcome": "Weather-related Hawk Alerts were cancelled mid-morning with instruction to resume normal activity and stay weather aware."
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "initial",
      "timestamp": "2026-06-11T08:26:00-05:00",
      "channel": "multi-channel",
      "verbatimText": "HAWK ALERT: NWS Severe Thunderstorm Warning until 930am for parts of Johnson Co. Storm includes 70mph wind. Seek shelter. More: emergency.uiowa.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://emergency.uiowa.edu/hawk-alert-nws-severe-thunderstorm-warning-until-930am-parts-johnson-co-storm-includes-70mph-wind",
      "sourceDescription": "University of Iowa Emergency Updates / Hawk Alert archive page",
      "annotations": [
        "Archive timestamp 06/11/2026 - 8:26 AM on emergency.uiowa.edu."
      ],
      "characterCount": 147,
      "confidence": "high"
    },
    {
      "sequence": 2,
      "type": "update",
      "timestamp": "2026-06-11T08:42:00-05:00",
      "channel": "multi-channel",
      "verbatimText": "HAWK ALERT: NWS Severe Thunderstorm Warning until 9:45am for parts of Johnson Co. Storm includes 70mph winds. Seek shelter. More: emergency.uiowa.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://emergency.uiowa.edu/hawk-alert-nws-severe-thunderstorm-warning-until-945am-parts-johnson-co-storm-includes-70mph-winds",
      "sourceDescription": "University of Iowa Emergency Updates / Hawk Alert archive page",
      "annotations": [
        "Archive timestamp 06/11/2026 - 8:42 AM."
      ],
      "characterCount": 149,
      "confidence": "high"
    },
    {
      "sequence": 3,
      "type": "update",
      "timestamp": "2026-06-11T09:11:00-05:00",
      "channel": "multi-channel",
      "verbatimText": "HAWK ALERT: NWS Tornado Warning until 9:45am includes parts of Johnson County. Seek immediate shelter. More: emergency.uiowa.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://emergency.uiowa.edu/hawk-alert-nws-tornado-warning-until-945am-includes-parts-johnson-county-seek-immediate-shelter",
      "sourceDescription": "University of Iowa Emergency Updates / Hawk Alert archive page",
      "annotations": [
        "Archive timestamp 06/11/2026 - 9:11 AM; seek immediate shelter for tornado warning."
      ],
      "characterCount": 128,
      "confidence": "high"
    },
    {
      "sequence": 4,
      "type": "update",
      "timestamp": "2026-06-11T09:23:00-05:00",
      "channel": "multi-channel",
      "verbatimText": "HAWK ALERT: NWS Severe Thunderstorm Warning until 10:30am for parts of Johnson Co. Storm includes 70 mph winds. Seek shelter. More: emergency.uiowa.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://emergency.uiowa.edu/hawk-alert-nws-severe-thunderstorm-warning-until-1030am-parts-johnson-co-storm-includes-70-mph",
      "sourceDescription": "University of Iowa Emergency Updates / Hawk Alert archive page",
      "annotations": [
        "Archive timestamp 06/11/2026 - 9:23 AM."
      ],
      "characterCount": 151,
      "confidence": "high"
    },
    {
      "sequence": 5,
      "type": "all-clear",
      "timestamp": "2026-06-11T10:04:00-05:00",
      "channel": "multi-channel",
      "verbatimText": "HAWK ALERT: All weather-related Hawk Alerts for our area have been cancelled. Resume normal activity and stay weather aware. More: emergency.uiowa.edu",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://emergency.uiowa.edu/hawk-alert-all-weather-related-hawk-alerts-our-area-have-been-cancelled-resume-normal-activity-and",
      "sourceDescription": "University of Iowa Emergency Updates / Hawk Alert archive page",
      "annotations": [
        "Archive timestamp 06/11/2026 - 10:04 AM; weather-related alerts cancelled."
      ],
      "characterCount": 150,
      "confidence": "high"
    }
  ],
  "context": "University of Iowa Hawk Alerts are published on emergency.uiowa.edu and push to registered campus channels. On June 11, 2026, successive NWS products for Johnson County triggered seek-shelter Hawk Alerts including a tornado warning, then an all-weather cancellation.",
  "keyFindings": [
    "Official archive pages show complete Hawk Alert short-form text with seek-shelter protective guidance.",
    "Cascade includes both severe thunderstorm and tornado products plus an explicit weather-alert cancellation."
  ],
  "sources": [
    {
      "type": "official-archive",
      "title": "Hawk Alert tornado warning (Jun 11 morning)",
      "url": "https://emergency.uiowa.edu/hawk-alert-nws-tornado-warning-until-945am-includes-parts-johnson-county-seek-immediate-shelter",
      "accessDate": "2026-07-25"
    },
    {
      "type": "official-archive",
      "title": "Hawk Alert weather alerts cancelled",
      "url": "https://emergency.uiowa.edu/hawk-alert-all-weather-related-hawk-alerts-our-area-have-been-cancelled-resume-normal-activity-and",
      "accessDate": "2026-07-25"
    }
  ],
  "confidence": "high",
  "tags": [
    "tornado",
    "severe-storm",
    "hawk-alert",
    "seek-shelter"
  ],
  "dateAdded": "2026-07-25",
  "lastUpdated": "2026-07-25",
  "addedBy": "ingestion"
}