Alert archive / Iowa / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 22, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 6, 2010, 4:15 AM CDT for Cedar County, Johnson County, Muscatine County, Iowa. It was in force for 30 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
- Apr 6, 2010, 4:15 AM CDT (09:15 UTC)
- Expired
- Apr 6, 2010, 4:45 AM CDT
- In force
- 30 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cedar County, IA, Johnson County, IA, Muscatine County, IA
The radar
The Quad Cities radar (KDVN), 58 km from the middle of the area, began a volume at 09:15 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, 9.3 hours before the alert went out and 65 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
- 1762 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 584 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 6, 4:06 AM CDT, 9 minutes earlier.
Area forecast discussion, Apr 6, 4:06 AM CDT, 9 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, Apr 5, 5:06 AM CDT, 23 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 506 AM CDT MON APR 5 2010 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-061015- BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON- CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON- HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL- WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON- WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK- 506 AM CDT MON APR 5 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST MISSOURI. .DAY ONE...TODAY AND TONIGHT A WARM FRONT WILL MOVE INTO THE AREA LATE TODAY AND TONIGHT AND PROVIDE THE FOCUS FOR THUNDERSTORMS... SOME OF WHICH MAY BE SEVERE. THE MAIN THREAT WILL BE LARGE HAIL AROUND 1 INCH IN DIAMETER BETWEEN 3 PM AND MIDNIGHT. THERE IS A CHANCE LATE THIS AFTERNOON AND EARLY THIS EVENING THAT A FEW SUPERCELLS COULD DEVELOP ALONG THE WARM FRONT BRINGING A THREAT FOR VERY LARGE HAIL... DAMAGING WINDS AND TORNADOES ALONG AND MOSTLY SOUTH OF A LINE FROM MOUNT PLEASANT IOWA... TO ROSEVILLE ILLINOIS. THE STORM PREDICTION CENTER HAS PLACED THE ENTIRE OUTLOOK AREA IN A SLIGHT RISK FOR LATER TODAY AND TONIGHT. OVERNIGHT... THE THREAT WILL TRANSITION TO HEAVY RAIN... AS A STRONG LOW LEVEL JET TRANSPORTS VERY MOIST AIR NORTH OF THE ADVANCING WARM FRONT. CONDITIONS APPEAR FAVORABLE FOR SOME AREAS TO SEE REPEATED THUNDERSTORM ACTIVITY... WHICH MAY LEAD TO LOCALIZED HEAVY RAINFALL AMOUNTS IN EXCESS OF 2 INCHES AND POTENTIALLY FLASH FLOODING. AREAS ALONG AND ESPECIALLY NORTH OF INTERSTATE 80 ARE MOST AT RISK FOR SEEING HEAVY RAINFALL TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SEVERE THUNDERSTORMS WILL BE POSSIBLE TUESDAY...MAINLY ALONG AND NORTH THE HIGHWAY 20 CORRIDOR NEAR A STALLED FRONTAL BOUNDARY. THE MAIN SEVERE WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING WIND. AN ISOLATED SUPERCELL CAPABLE OF PRODUCING TORNADOES IS POSSIBLE. TUESDAY NIGHT...MORE WIDESPREAD THUNDERSTORMS ARE LIKELY AS A COLD FRONT SLOWLY ADVANCES EAST ACROSS THE AREA. SOME OF THESE STORMS MAY BE SEVERE WITH LARGE HAIL AND DAMAGING WIND. THE STORM PREDICTION CENTER HAS PLACED THE ENTIRE AREA IN A SLIGHT RISK FOR TUESDAY AND TUESDAY NIGHT. WEDNESDAY...THUNDERSTORMS WILL AGAIN BE POSSIBLE ACROSS THE AREA AND THERE IS A LOW POTENTIAL FOR SEVERE THUNDERSTORMS IN ILLINOIS SOUTH OF INTERSTATE 80. IT IS TOO EARLY TO DETERMINE MORE SPECIFIC TIMING AND SEVERE WEATHER THREATS. THUNDERSTORMS LATE TUESDAY INTO EARLY WEDNESDAY MAY BE SLOW MOVING AND RESULT IN LOCALLY HEAVY RAINFALL AMOUNTS AND LOCALIZED FLASH FLOODING. IN ADDITION...SEVERAL DAYS OF RAINFALL THIS WEEK MAY LEAD TO RISES AND POSSIBLE FLOODING ON AREA RIVERS LATER THIS WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE OVER THE NEXT COUPLE OF DAYS. MCCLURE/SHEETS
In the hours before
Local storm report, Apr 6, 12:33 AM CDT, 3 hours 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1233 AM CDT TUE APR 06 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1155 PM TSTM WND DMG W FREEPORT 42.29N 89.63W
04/05/2010 STEPHENSON IL TRAINED SPOTTER
TREES AND POWER POLES SNAPPED OFF. SIDING TORN OFF
HOUSES. 1/4 MILE W OF HIGHLAND COMMUNITY COLLEGE ON PEARL
CITY ROAD. TIME ESTIMATED. RELAYED BY STEPHENSON COUNTY
SKYNET.
&&
DLSLocal storm report, Apr 6, 1:19 AM CDT, 2 hours 56 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
119 AM CDT TUE APR 06 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1038 PM TSTM WND DMG 6 NE CASCADE 42.36N 90.93W
04/05/2010 DUBUQUE IA EMERGENCY MNGR
BARN DESTROYED. TIME ESTIMATED.
1050 PM TSTM WND DMG 3 S DUBUQUE REGIONAL AI 42.36N 90.72W
04/05/2010 DUBUQUE IA EMERGENCY MNGR
ROOF TAKEN OFF OF A HOUSE NEAR INTERSECTION OF BUNCOMBE
ROAD AND BENNETVILLE ROAD.
1050 PM TSTM WND DMG 2 SE DUBUQUE REGIONAL A 42.38N 90.69W
04/05/2010 DUBUQUE IA EMERGENCY MNGR
FARM MACHINERY BLOWN OVER. POWER LINES DOWN.
1056 PM TSTM WND GST DUBUQUE REGIONAL AIRPOR 42.40N 90.72W
04/05/2010 M60.00 MPH DUBUQUE IA ASOS
MEASURED AT DUBUQUE IOWA AIRPORT. CORRECTED LAT/LON
&&
LELocal storm report, Apr 6, 1:38 AM CDT, 2 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
138 AM CDT TUE APR 06 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1050 PM HAIL DUBUQUE 42.50N 90.69W
04/05/2010 E1.25 INCH DUBUQUE IA BROADCAST MEDIA
COURTESY WREX TV
&&
LELocal storm report, Apr 6, 2:05 AM CDT, 2 hours 10 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, Apr 6, 3:09 AM CDT, 1 hour 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>Special weather statement, Apr 6, 3:50 AM CDT, 25 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 |
|---|---|---|---|---|
| Apr 5, 10:14 PM CDT | Special Weather Statement | DVN | Benton, Delaware, Dubuque, Jackson, Jones, Linn | 61 min |
| Apr 5, 10:27 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jackson, Jones, Linn | 48 min |
| Apr 5, 10:58 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 62 min |
| Apr 5, 11:13 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 47 min |
| Apr 6, 3:09 AM CDT | Special Weather Statement | DVN | Benton | 51 min |
| Apr 6, 5:05 AM CDT | Special Weather Statement | DVN | Scott | 55 min |
| Apr 6, 5:17 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 28 min |
| Apr 6, 6:24 AM CDT | Special Weather Statement | DVN | Jackson, Jones | 51 min |
| Apr 6, 12:37 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 22 hr |
| Apr 6, 12:37 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 22 hr |
| Apr 6, 12:37 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 47 hr |
| Apr 6, 12:42 PM CDT | River Flood Warning | DVN | Clinton, Scott | 7 days |
| Apr 6, 12:42 PM CDT | River Flood Warning | DVN | Iowa, Johnson | 5 days |
| Apr 6, 12:42 PM CDT | River Flood Warning | DVN | Louisa | 4 days |
| Apr 6, 12:42 PM CDT | River Flood Warning | DVN | Lee | 22 hr |
| Apr 6, 4:22 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 53 min |
| Apr 6, 5:15 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 60 min |
| Apr 6, 6:07 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Dubuque | 34 min |
| Apr 6, 6:18 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 57 min |
| Apr 6, 6:54 PM CDT | Special Weather Statement | DVN | Buchanan | 51 min |
| Apr 6, 6:59 PM CDT | Tornado Warning | DVN | Benton, Buchanan, Delaware, Linn | 43 min |
| Apr 5, 8:42 PM CDT | Severe Thunderstorm Warning | DVN | Carroll | 19 min |
| Apr 5, 11:36 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 39 min |
| Apr 5, 11:58 PM CDT | Severe Thunderstorm Warning | DVN | Carroll | 24 min |
| Apr 6, 5:44 AM CDT | Severe Thunderstorm Warning | DVN | Carroll, Whiteside | 31 min |
| Apr 6, 6:01 AM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 14 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2010Every severe thunderstorm warning in 2010
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.