Alert archive / Iowa / Special Weather Statements in 2019

Special Weather Statement, NWS La Crosse, WI

June 27, 2019Clayton County, Iowa

NWS La Crosse, WI issued this special weather statement at Jun 27, 2019, 5:13 PM CDT for Clayton County, Iowa. It was in force for 32 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: Jun 27, 2019, 5:13 PM CDT (22:13 UTC)
Expired: Jun 27, 2019, 5:45 PM CDT
In force: 32 min
Issued by: NWS La Crosse, WI

County Clayton County, IA

The radar

The La Crosse radar (KARX), 119 km from the middle of the area, began a volume at 22:14 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 12:00Z, 10.2 hours before the alert went out and 139 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1660 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1139 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 La Crosse, WI wrote its last area forecast discussion before this special weather statement went out at Jun 27, 2:28 PM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jun 27, 2:28 PM CDT, 2 hours 45 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 27, 3:39 PM CDT, 1 hour 34 minutes before

Hazardous Weather Outlook
National Weather Service La Crosse WI
339 PM CDT Thu Jun 27 2019

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-281100-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
339 PM CDT Thu Jun 27 2019

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.

.DAY ONE...Tonight

More thunderstorms are expected tonight. These storms will have
the potential to produce heavy rain that could lead to some flash
flooding. Some of the stronger storms could also produce strong
winds.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The thunderstorm chances will continue into Friday with lightning
the main threat.

There will be on and off chances for thunderstorms from Sunday
afternoon through Wednesday. At this time, it is too early to
determine if there is a threat for severe weather.

.SPOTTER INFORMATION STATEMENT...

Any reports of flooding tonight would be appreciated.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

04

In the hours before

Local storm report, Jun 27, 3:12 PM CDT, 2 hours 1 minute 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 27, 3:24 PM CDT, 1 hour 49 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 27, 3:26 PM CDT, 1 hour 47 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, Jun 27, 4:43 PM CDT, 30 minutes before

Special Weather Statement
National Weather Service La Crosse WI
443 PM CDT Thu Jun 27 2019

IAZ029-272245-
Fayette-
443 PM CDT Thu Jun 27 2019

...A STRONG THUNDERSTORM WILL AFFECT FAYETTE COUNTY...

At 440 PM CDT, a strong thunderstorm was located near Tripoli, or 13
miles northwest of Oelwein, moving east at 25 mph.

Wind gusts up to 35 mph, pea size hail, and heavy downpours are
possible with this storm.

Locations impacted include...
Oelwein, Fayette, Maynard, Arlington, Wadena, Westgate, Albany, and
Brainard.

If outdoors, seek shelter inside a building.

LAT...LON 4264 9208 4290 9208 4294 9161 4264 9161
TIME...MOT...LOC 2140Z 263DEG 23KT 4275 9216

Lee

Local storm report, Jun 27, 4:47 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
447 PM CDT THU JUN 27 2019

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

0200 PM     TSTM WND DMG     SPARTA                  43.94N 90.81W
06/27/2019                   MONROE             WI   PUBLIC

            RECEIVED A PICTURE OF A LARGE BRANCH SNAPPED
            FROM A TREE. TIME ESTIMATED FROM RADAR.

&&

Special weather statement, Jun 27, 5:13 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service La Crosse WI
513 PM CDT Thu Jun 27 2019

IAZ030-272245-
Clayton-
513 PM CDT Thu Jun 27 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN CLAYTON COUNTY...

At 512 PM CDT, a strong thunderstorm was located near Arlington, or
14 miles southwest of Elkader, moving east at 35 mph.

Winds in excess of 40 mph and penny size hail are possible with this
storm.

Locations impacted include...
Guttenberg, Elkader, Strawberry Point, Garnavillo, Volga, North Buena
Vista, Garber, Osterdock, Elkport, Millville, and Mederville.

If outdoors, consider seeking shelter inside a building.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4285 9161 4288 9110 4275 9107 4269 9097
      4268 9090 4265 9090 4264 9160
TIME...MOT...LOC 2212Z 268DEG 33KT 4272 9162

CA

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 10:05 AM CDT	Special Weather Statement	ARX	Buffalo	85 min
Jun 27, 11:33 AM CDT	Special Weather Statement	ARX	Buffalo	57 min
Jun 27, 12:12 PM CDT	Special Weather Statement	ARX	Buffalo, La Crosse, Trempealeau	93 min
Jun 27, 12:23 PM CDT	Special Weather Statement	ARX	Clark, Taylor	82 min
Jun 27, 1:17 PM CDT	Special Weather Statement	ARX	Crawford, La Crosse, Monroe, Vernon	118 min
Jun 27, 1:30 PM CDT	Special Weather Statement	ARX	Clark, Jackson	30 min
Jun 27, 1:37 PM CDT	Severe Thunderstorm Warning	ARX	La Crosse, Monroe	53 min
Jun 27, 2:15 PM CDT	Special Weather Statement	ARX	Clark, Jackson	60 min
Jun 27, 2:23 PM CDT	Special Weather Statement	ARX	Adams, Grant, Juneau, Richland	82 min
Jun 27, 12:48 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd, Howard	31 min
Jun 27, 1:08 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw	16 min
Jun 27, 4:43 PM CDT	Special Weather Statement	ARX	Fayette	62 min

Nearby

Special Weather Statements in Iowa, 2019 Every special weather statement in 2019

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.