Alert archive / Indiana / Special Weather Statements in 2017
Special Weather Statement, NWS Chicago, IL
NWS Chicago, IL issued this special weather statement at May 18, 2017, 6:21 PM EDT for Benton County, Indiana. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 18, 2017, 6:21 PM EDT (22:21 UTC)
- Expired
- May 18, 2017, 6:45 PM EDT
- In force
- 24 min
- Issued by
- NWS Chicago, IL
County Benton County, IN
The radar
The Chicago radar (KLOT), 128 km from the middle of the area, began a volume at 22:23 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.4 hours before the alert went out and 125 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 44 J/kg
- Mixed-layer CIN
- -193 J/kg
- Mixed-layer LCL
- 1279 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted.
<!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>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at May 18, 3:40 PM EDT, 2 hours 41 minutes earlier.
Area forecast discussion, May 18, 3:40 PM EDT, 2 hours 41 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>Hazardous weather outlook, May 18, 4:29 PM EDT, 1 hour 52 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>In the hours before
Local storm report, May 18, 4:23 PM EDT, 1 hour 58 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>Special weather statement, May 18, 6:21 PM EDT, 0 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 |
|---|---|---|---|---|
| May 17, 9:58 PM EDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 62 min |
| May 17, 10:37 PM EDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 23 min |
| May 17, 10:54 PM EDT | Tornado Warning | LOT | Lee, Ogle | 21 min |
| May 17, 10:59 PM EDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, LaSalle, Lee, McHenry, Ogle and 1 more | 61 min |
| May 17, 11:04 PM EDT | Tornado Warning | LOT | Boone, Winnebago | 26 min |
| May 17, 11:22 PM EDT | Tornado Warning | LOT | Boone, McHenry | 23 min |
| May 17, 11:43 PM EDT | Severe Thunderstorm Warning | LOT | DeKalb, Kane, Kendall, LaSalle, McHenry | 47 min |
| May 18, 12:06 AM EDT | Special Marine Warning | LOT | 114 min | |
| May 18, 12:11 AM EDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Lake | 49 min |
| May 18, 12:29 AM EDT | Severe Thunderstorm Warning | LOT | Kane, Kendall | 31 min |
| May 18, 12:50 AM EDT | Severe Thunderstorm Warning | LOT | DuPage, Grundy, Kane, Kendall, Will | 40 min |
| May 18, 1:19 AM EDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Will | 41 min |
| May 18, 1:42 AM EDT | Special Marine Warning | LOT | 93 min | |
| May 18, 1:46 AM EDT | Special Weather Statement | LOT | Kankakee | 14 min |
| May 18, 1:58 AM EDT | Severe Thunderstorm Warning | LOT | Cook, Kankakee, Will | 47 min |
| May 18, 2:00 AM EDT | Severe Thunderstorm Warning | LOT | Cook | 30 min |
| May 18, 4:53 AM EDT | Gale Warning | LOT | 17 hr |
Nearby
Special Weather Statements in Indiana, 2017Every special weather statement in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.