Alert archive / Illinois / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 116, NWS Chicago, IL

July 15, 2003Cook County, Will County, Illinois

NWS Chicago, IL issued this severe thunderstorm warning at Jul 15, 2003, 4:58 AM CDT for Cook County, Will County, Illinois. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 15, 2003, 4:58 AM CDT (09:58 UTC)
Expired: Jul 15, 2003, 5:30 AM CDT
In force: 32 min
Issued by: NWS Chicago, IL
Area: Counties, with a storm outline in the text

Counties Cook County, IL, Will County, IL

The radar

The Chicago radar (KLOT), 24 km from the middle of the area, began a volume at 10:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 15, 3:20 AM CDT, 1 hour 38 minutes earlier.

Area forecast discussion, Jul 15, 3:20 AM CDT, 1 hour 38 minutes before

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In the hours before

Local storm report, Jul 15, 4:45 AM CDT, 13 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
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Local storm report, Jul 15, 4:52 AM CDT, 6 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 15, 3:17 AM CDT	Special Marine Warning	LOT		103 min
Jul 15, 4:18 AM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Kane	42 min
Jul 15, 4:26 AM CDT	Special Marine Warning	LOT		2 hr
Jul 15, 4:26 AM CDT	Special Marine Warning	LOT		2 hr
Jul 15, 5:25 AM CDT	Severe Thunderstorm Warning	LOT	Grundy, Kankakee, Will	35 min
Jul 15, 6:20 AM CDT	Severe Thunderstorm Warning	LOT	Iroquois	25 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2003 Every severe thunderstorm warning in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.