Alert archive / Nebraska / Special Weather Statements in 2018

Special Weather Statement, NWS Omaha, NE

May 11, 2018Gage County, Jefferson County, Saline County, Nebraska

NWS Omaha, NE issued this special weather statement at May 11, 2018, 3:21 AM CDT for Gage County, Jefferson County, Saline County, Nebraska. It was in force for 39 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: May 11, 2018, 3:21 AM CDT (08:21 UTC)
Expired: May 11, 2018, 4:00 AM CDT
In force: 39 min
Issued by: NWS Omaha, NE

Counties Gage County, NE, Jefferson County, NE, Saline County, NE

The radar

The Grand Island radar (KUEX), 114 km from the middle of the area, began a volume at 08:24 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

Topeka, KS (KFOE), launched 00:00Z, 8.4 hours before the alert went out and 197 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: 577 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 2178 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

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 Omaha, NE wrote its last area forecast discussion before this special weather statement went out at May 11, 3:01 AM CDT, 20 minutes earlier.

Area forecast discussion, May 11, 3:01 AM CDT, 20 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, May 10, 3:42 PM CDT, 11 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
342 PM CDT Thu May 10 2018

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-111045-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-
Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-
Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-
Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson-
342 PM CDT Thu May 10 2018

This Hazardous Weather Outlook is for portions of southwest
Iowa...west central Iowa...east central Nebraska...northeast
Nebraska and southeast Nebraska.

.DAY ONE...Tonight and Friday

Isolated strong to severe storms will be possible after 9 PM,
mainly over northeast Nebraska. Locally damaging wind gusts will
be the primary hazard. Isolated severe storms are possible again
late Friday afternoon into evening from portions of southeast and
east-central Nebraska into southwest Iowa.

.DAYS TWO THROUGH SEVEN...Friday night through Thursday

Off-and-on thunderstorm chances remain in the forecast this
weekend through the middle of next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely not be needed tonight or Friday.

In the hours before

Special weather statement, May 11, 12:51 AM CDT, 2 hours 30 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
1251 AM CDT FRI MAY 11 2018

NEZ030-110630-
Boone NE-
1251 AM CDT FRI MAY 11 2018

...Significant Weather Advisory for BOONE COUNTY UNTIL 130 AM CDT...

At 1250 AM CDT, Doppler radar was tracking a strong thunderstorm 6
miles northeast of Wolbach, or 32 miles east of Ord, moving northeast
at 40 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Albion, St. Edward, Cedar Rapids, Primrose, Loretto and The Highway
14 And 56 Junction.

LAT...LON 4167 9829 4191 9784 4153 9783 4153 9788
      4151 9789 4151 9804 4150 9804 4150 9809
      4148 9810 4148 9829
TIME...MOT...LOC 0550Z 240DEG 34KT 4147 9833

FOBERT

Special weather statement, May 11, 2:27 AM CDT, 54 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, May 11, 3:21 AM CDT, 0 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 Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 12:51 AM CDT	Special Weather Statement	OAX	Boone	39 min
May 11, 1:57 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Gage, Jefferson, Lancaster, Saline, Saunders and 1 more	33 min
May 11, 2:27 AM CDT	Special Weather Statement	OAX	Gage, Lancaster, Saline, Seward	48 min
May 11, 3:34 AM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Lancaster, Saline, Seward	26 min
May 11, 3:57 AM CDT	Special Weather Statement	OAX	Gage, Johnson, Lancaster	48 min
May 11, 4:23 AM CDT	Special Weather Statement	OAX	Lancaster, Seward	52 min
May 11, 4:33 AM CDT	Special Weather Statement	OAX	Johnson, Nemaha, Pawnee, Richardson	42 min
May 11, 6:20 AM CDT	Special Weather Statement	OAX	Montgomery	40 min

Nearby

Special Weather Statements in Nebraska, 2018 Every 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.