Alert archive / Iowa / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 123, NWS Des Moines, IA

June 23, 20095 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 23, 2009, 6:02 PM CDT for 5 counties in Iowa. It was in force for 28 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: Jun 23, 2009, 6:02 PM CDT (23:02 UTC)
Expired: Jun 23, 2009, 6:30 PM CDT
In force: 28 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon

Counties Adams County, IA, Clarke County, IA, Madison County, IA, Union County, IA, Warren County, IA

The radar

The Des Moines radar (KDMX), 70 km from the middle of the area, began a volume at 23:05 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 23, 3:28 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

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 Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 23, 3:34 PM CDT, 2 hours 28 minutes earlier.

Area forecast discussion, Jun 23, 3:34 PM CDT, 2 hours 28 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, Jun 23, 5:12 PM CDT, 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
512 PM CDT TUE JUN 23 2009

IAZ057>060-070>074-081>085-092>096-242215-
AUDUBON-GUTHRIE-DALLAS-POLK-CASS-ADAIR-MADISON-WARREN-MARION-
ADAMS-UNION-CLARKE-LUCAS-MONROE-TAYLOR-RINGGOLD-DECATUR-WAYNE-
APPANOOSE-
512 PM CDT TUE JUN 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

VERY HOT AND HUMID CONDITIONS WILL RETURN AGAIN WEDNESDAY. AN
EXCESSIVE HEAT WARNING IS IN EFFECT FOR THE AREA TONIGHT. PLEASE
REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES
FOR FURTHER DETAILS.

THUNDERSTORMS ARE POSSIBLE THIS EVENING AND TONIGHT. STORMS COULD
BE SEVERE...WITH 60 MPH WIND GUSTS AND HEAVY RAINFALL THE MAIN THREATS.
LOCALLY VERY HEAVY RAINFALL IS EXPECTED...AND ISOLATED FLASH
FLOODING CANNOT BE RULED OUT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HOT AND HUMID CONDITIONS WILL PERSIST WEDNESDAY...WITH AFTERNOON
HEAT INDEX VALUES GREATER THAN 110 DEGREES EXPECTED THROUGH WEDNESDAY.
AN EXCESSIVE HEAT WARNING IS IN EFFECT FOR THE AREA THROUGH
WEDNESDAY EVENING. PLEASE REFER TO THE NATIONAL WEATHER SERVICE
WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

MORE THUNDERSTORMS ARE EXPECTED WEDNESDAY INTO THURSDAY MORNING.
ISOLATED SEVERE STORMS AND LOCALLY HEAVY RAINFALL ARE POSSIBLE...ESPECIALLY
WEDNESDAY NIGHT. ADDITIONAL THUNDERSTORM CHANCES ARRIVE FRIDAY
NIGHT AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED AT VARIOUS TIMES THIS AFTERNOON THROUGH
WEDNESDAY NIGHT.

IAZ061-075-086-097-242215-
JASPER-MAHASKA-WAPELLO-DAVIS-
512 PM CDT TUE JUN 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

VERY HOT AND HUMID CONDITIONS ARE EXPECTED THIS AFTERNOON. A HEAT
ADVISORY IS IN EFFECT FOR THE AREA THROUGH TONIGHT. PLEASE REFER TO THE
NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR
FURTHER DETAILS.

THUNDERSTORMS ARE EXPECTED LATE THIS EVENING AND TONIGHT. SOME STORMS
COULD BE SEVERE...WITH ISOLATED 60 MPH WIND GUSTS AND HEAVY RAINFALL THE
MAIN THREATS. LOCALLY HEAVY RAINFALL IS EXPECTED...AND ISOLATED FLASH
FLOODING CANNOT BE RULED OUT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

MORE THUNDERSTORMS ARE EXPECTED WEDNESDAY INTO THURSDAY MORNING.
ISOLATED SEVERE STORMS AND LOCALLY HEAVY RAINFALL ARE POSSIBLE
...ESPECIALLY WEDNESDAY NIGHT. ADDITIONAL THUNDERSTORM CHANCES
ARRIVE FRIDAY NIGHT AND SATURDAY.

A HEAT ADVISORY IS IN EFFECT FOR PORTIONS OF THE AREA
THROUGH 9 PM WEDNESDAY. PLEASE REFER TO THE NATIONAL WEATHER
SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED AT VARIOUS TIMES TONIGHT
THROUGH WEDNESDAY NIGHT.

IAZ004>007-015>017-023>028-033>039-044>050-062-242215-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-
BOONE-STORY-MARSHALL-TAMA-POWESHIEK-
512 PM CDT TUE JUN 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

THUNDERSTORMS ARE POSSIBLE LATER TONIGHT. STORMS COULD BE SEVERE...WITH
60 MPH WIND GUSTS AND HEAVY RAINFALL THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

MORE THUNDERSTORMS ARE EXPECTED WEDNESDAY INTO THURSDAY MORNING. ISOLATED
SEVERE STORMS AND LOCALLY HEAVY RAINFALL ARE POSSIBLE...ESPECIALLY WEDNESDAY
NIGHT. ADDITIONAL THUNDERSTORM CHANCES ARRIVE FRIDAY NIGHT AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED AT VARIOUS TIMES TONIGHT
THROUGH WEDNESDAY NIGHT.

REV

In the hours before

Local storm report, Jun 23, 5:09 PM CDT, 53 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>

Local storm report, Jun 23, 5:12 PM CDT, 50 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>

Local storm report, Jun 23, 5:16 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
516 PM CDT TUE JUN 23 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0500 PM     TSTM WND GST     7 S INDIANOLA           41.26N 93.57W
06/23/2009  E60 MPH          WARREN             IA   LAW ENFORCEMENT

            MADISON COUNTY LAW ENFORCEMENT REPORTS 50 TO 60 MPH AND
            DIME SIZED HAIL AT THE INTERSECTION OF 120TH AVENUE AND
            HIGHWAY 69.

0422 PM     TSTM WND DMG     1 N DALLAS CENTER       41.70N 93.98W
06/23/2009                   DALLAS             IA   EMERGENCY MNGR

            DALLAS COUNTY EMERGENCY MANAGEMENT REPORTS ROOF RIPPED
            OFF FARM BUILDING AND CORN BLOWN OVER. DELAYED REPORT.

0458 PM     HAIL             1 S DE SOTO             41.52N 94.01W
06/23/2009  E1.00 INCH       DALLAS             IA   TRAINED SPOTTER

            TRAINED SPOTTER REPORTS QUARTER SIZED HAIL AT
            INTERSECTION OF HIGHWAY 169 AND F90.

0435 PM     TSTM WND DMG     TRIPOLI                 42.81N 92.26W
06/23/2009                   BREMER             IA   EMERGENCY MNGR

            BREMER COUNTY EMERGENCY MANAGEMENT REPORTS TREES AND
            POWER LINES DOWN THROUGHOUT THE TRIPOLI AREA AND
            ELSEWHERE IN THE COUNTY. DELAYED REPORT. TIME ESTIMATED.

0448 PM     TSTM WND GST     ATLANTIC                41.40N 95.01W
06/23/2009  E60 MPH          CASS               IA   TRAINED SPOTTER

            TRAINED SPOTTER REPORTS WINDS OF 60 MPH WITH TREES AND
            POWER LINES DOWN IN ATLANTIC.

&&

LEE

Local storm report, Jun 23, 5:32 PM CDT, 30 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>

Local storm report, Jun 23, 5:40 PM CDT, 22 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>

Local storm report, Jun 23, 5:49 PM CDT, 13 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 Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 1:31 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth, Palo Alto, Pocahontas	44 min
Jun 23, 1:39 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Greene, Sac	51 min
Jun 23, 1:53 PM CDT	Tornado Warning	DMX	Calhoun, Webster	24 min
Jun 23, 2:15 PM CDT	Excessive Heat Warning	DMX	Adair, Adams, Appanoose, Audubon, Cass, Clarke and 13 more	20 hr
Jun 23, 2:40 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Wright	50 min
Jun 23, 2:49 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin, Hancock, Winnebago, Worth, Wright	41 min
Jun 23, 3:14 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Cerro Gordo, Franklin, Hardin	46 min
Jun 23, 3:15 PM CDT	Areal Flood Advisory	DMX	Franklin, Wright	90 min
Jun 23, 3:23 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene	52 min
Jun 23, 3:25 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy, Hardin	50 min
Jun 23, 3:35 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk	55 min
Jun 23, 3:48 PM CDT	Severe Thunderstorm Warning	DMX	Polk, Story	57 min
Jun 23, 4:01 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	44 min
Jun 23, 4:03 PM CDT	Areal Flood Advisory	DMX	Dallas, Polk	6 hr
Jun 23, 4:09 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Butler, Grundy	51 min
Jun 23, 4:12 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk	48 min
Jun 23, 4:12 PM CDT	Tornado Warning	DMX	Black Hawk	33 min
Jun 23, 4:18 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Story, Tama	57 min
Jun 23, 4:20 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	55 min
Jun 23, 4:28 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie, Madison	62 min
Jun 23, 4:33 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	42 min
Jun 23, 4:42 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Jasper, Marshall, Poweshiek, Tama	48 min
Jun 23, 4:44 PM CDT	Areal Flood Advisory	DMX	Madison, Warren	3 hr
Jun 23, 4:50 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Dallas, Guthrie	40 min
Jun 23, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	16 min
Jun 23, 4:58 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe, Warren	47 min
Jun 23, 5:00 PM CDT	Areal Flood Advisory	DMX	Adair, Guthrie	119 min
Jun 23, 5:00 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	45 min
Jun 23, 5:11 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	49 min
Jun 23, 5:13 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Madison, Union	47 min
Jun 23, 5:22 PM CDT	Flash Flood Warning	DMX	Adair, Dallas, Guthrie, Madison	6 hr
Jun 23, 5:27 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Guthrie, Madison	33 min
Jun 23, 5:38 PM CDT	Areal Flood Advisory	DMX	Madison	3 hr
Jun 23, 5:42 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Monroe, Wapello	48 min
Jun 23, 6:28 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis	32 min
Jun 23, 6:40 PM CDT	Flash Flood Warning	DMX	Polk	6 hr
Jun 23, 6:47 PM CDT	Severe Thunderstorm Warning	DMX	Decatur	28 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2009 Every severe thunderstorm warning in 2009

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.