Alert archive / Iowa / Special Weather Statements in 2018
Special Weather Statement, NWS Quad Cities, IA
NWS Quad Cities, IA issued this special weather statement at Sep 19, 2018, 2:21 PM CDT for Cedar County, Iowa County, Johnson County, Iowa. It was in force for 54 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
- Sep 19, 2018, 2:21 PM CDT (19:21 UTC)
- Expired
- Sep 19, 2018, 3:15 PM CDT
- In force
- 54 min
- Issued by
- NWS Quad Cities, IA
Counties Cedar County, IA, Iowa County, IA, Johnson County, IA
The radar
The Quad Cities radar (KDVN), 93 km from the middle of the area, began a volume at 19:20 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
Minneapolis, MN (KMPX), launched 12:00Z, 7.4 hours before the alert went out and 380 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 536 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Quad Cities, IA wrote its last area forecast discussion before this special weather statement went out at Sep 18, 6:23 PM CDT, 19 hours 58 minutes earlier.
Area forecast discussion, Sep 18, 6:23 PM CDT, 19 hours 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>The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 9:34 PM CDT | River Flood Watch | DVN | Iowa | 24 hr |
| Sep 19, 1:23 AM CDT | Special Weather Statement | DVN | Jefferson, Lee | 22 min |
| Sep 19, 1:47 AM CDT | Special Weather Statement | DVN | Jefferson, Lee, Van Buren | 58 min |
| Sep 19, 9:10 AM CDT | Special Weather Statement | DVN | Des Moines, Henry, Washington | 80 min |
| Sep 19, 10:38 AM CDT | River Flood Watch | DVN | Benton, Linn | 7 days |
| Sep 19, 10:38 AM CDT | River Flood Watch | DVN | Cedar, Johnson, Linn | 48 hr |
| Sep 19, 10:38 AM CDT | River Flood Watch | DVN | Cedar, Louisa, Muscatine | 35 hr |
| Sep 19, 11:51 AM CDT | Special Weather Statement | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 54 min |
| Sep 19, 3:52 PM CDT | Special Weather Statement | DVN | Henry, Rock Island | 23 min |
Nearby
Special Weather Statements in Iowa, 2018Every special weather statement in 2018
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.