Alert archive / Iowa / Special Weather Statements in 2017
Special Weather Statement, NWS Quad Cities, IA
NWS Quad Cities, IA issued this special weather statement at Oct 14, 2017, 1:48 AM CDT for Louisa County, Muscatine County, Scott County, Iowa; Rock Island County, Illinois. It was in force for 57 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
- Oct 14, 2017, 1:48 AM CDT (06:48 UTC)
- Expired
- Oct 14, 2017, 2:45 AM CDT
- In force
- 57 min
- Issued by
- NWS Quad Cities, IA
Counties Louisa County, IA, Muscatine County, IA, Scott County, IA, Rock Island County, IL
The radar
The Quad Cities radar (KDVN), 40 km from the middle of the area, began a volume at 06:49 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
Davenport, (KDVN), launched 00:00Z, 6.8 hours before the alert went out and 46 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
- 1013 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 332 m²/s²
- 0-3 km storm-relative helicity
- 810 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Oct 13, 11:46 PM CDT, 2 hours 2 minutes earlier.
Area forecast discussion, Oct 13, 11:46 PM CDT, 2 hours 2 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, Oct 13, 4:43 AM CDT, 21 hours 5 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
Special weather statement, Oct 14, 1:03 AM CDT, 45 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
103 AM CDT SAT OCT 14 2017
IAC087-101-103-107-115-139-183-140700-
Henry-Louisa-Keokuk-Johnson-Washington-Muscatine-Jefferson-
103 AM CDT SAT OCT 14 2017
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN HENRY...LOUISA...
SOUTHEASTERN KEOKUK...SOUTHEASTERN JOHNSON...WASHINGTON...WESTERN
MUSCATINE AND NORTHEASTERN JEFFERSON COUNTIES UNTIL 200 AM CDT...
At 102 AM CDT, a strong thunderstorm was located over Pleasant Plain,
or 11 miles north of Fairfield, moving northeast at 40 mph.
Winds in excess of 30 mph and pea size hail are possible with this
storm.
Locations impacted include...
Muscatine, Fairfield, Washington, Wapello, Columbus Junction, West
Liberty, Lone Tree, Winfield, Riverside, Fruitland, Wayland, Morning
Sun, Brighton, Richland, Ainsworth, Grandview, Conesville, Columbus
City, Letts and Nichols.
Heavy rainfall is also occurring with this storm, and may cause
minor flooding. Do not drive your vehicle through flooded roadways.
LAT...LON 4160 9137 4160 9119 4112 9109 4097 9203
4128 9214
TIME...MOT...LOC 0602Z 249DEG 35KT 4116 9189
RP KINNEYSpecial weather statement, Oct 14, 1:48 AM CDT, 0 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
148 AM CDT SAT OCT 14 2017
ILC073-131-161-195-IAC031-045-115-139-163-140745-
Rock
Island-Mercer-Whiteside-Henry-Louisa-Cedar-Scott-Muscatine-Clinton-
148 AM CDT SAT OCT 14 2017
...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT AREAS FROM MUSCATINE
THROUGH THE QUAD CITIES AND CLINTON UNTIL 245 AM CDT...
At 145 AM CDT, strong thunderstorms were clustered near Muscatine,
moving northeast at 45 mph.
Heavy rainfall is occurring with these storms, and will cause minor
street flooding, ponding water on highways, and reduced visibility.
Do not drive your vehicle through flooded roadways.
Winds in excess of 30 mph and pea size hail are also possible with
the strongest storms.
Locations impacted include...
Davenport, Moline, Rock Island, Bettendorf, Clinton, Muscatine, East
Moline, Wapello, Columbus Junction, Durant, Silvis, Geneseo,
Eldridge, DeWitt, Milan, Colona, Camanche, Le Claire, Coal Valley and
West Liberty.
LAT...LON 4115 9137 4116 9137 4116 9148 4142 9148
4142 9137 4165 9136 4193 9015 4193 9012
4139 8994
TIME...MOT...LOC 0645Z 251DEG 50KT 4142 9118
RP KINNEYThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 1:03 AM CDT | Special Weather Statement | DVN | Jefferson, Louisa, Washington | 57 min |
| Oct 14, 3:30 AM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more | 19 hr |
| Oct 14, 9:02 AM CDT | Special Weather Statement | DVN | Washington | 28 min |
| Oct 14, 9:42 AM CDT | Special Weather Statement | DVN | Louisa, Muscatine, Scott | 48 min |
| Oct 14, 1:44 PM CDT | Special Weather Statement | DVN | Henry | 31 min |
| Oct 14, 4:46 PM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 59 min |
| Oct 14, 5:17 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 43 min |
| Oct 14, 5:31 PM CDT | Tornado Warning | DVN | Lee | 44 min |
| Oct 14, 2:18 AM CDT | Special Weather Statement | DVN | Rock Island | 27 min |
| Oct 14, 3:03 AM CDT | Special Weather Statement | DVN | Whiteside | 57 min |
| Oct 14, 5:55 AM CDT | Special Weather Statement | DVN | Bureau, Putnam | 65 min |
| Oct 14, 6:05 AM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 40 min |
| Oct 14, 10:45 AM CDT | Special Weather Statement | DVN | Henry | 45 min |
| Oct 14, 12:11 PM CDT | Special Weather Statement | DVN | McDonough | 34 min |
| Oct 14, 5:07 PM CDT | Special Weather Statement | DVN | Henderson | 23 min |
| Oct 14, 5:26 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 79 min |
| Oct 14, 5:43 PM CDT | Special Weather Statement | DVN | Bureau, Henry | 32 min |
| Oct 14, 5:51 PM CDT | Severe Thunderstorm Warning | DVN | McDonough | 54 min |
| Oct 14, 6:15 PM CDT | Special Weather Statement | DVN | Bureau, Putnam | 30 min |
| Oct 14, 6:25 PM CDT | Tornado Warning | DVN | Hancock | 20 min |
| Oct 14, 6:53 PM CDT | Areal Flood Warning | DVN | Henry | 12 hr |
Nearby
Special Weather Statements in Iowa, 2017Special Weather Statements in Illinois, 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.