Alert archive / Nebraska / Special Weather Statements in 2019

Special Weather Statement, NWS North Platte, NE

July 28, 2019Sheridan County, Nebraska

NWS North Platte, NE issued this special weather statement at Jul 28, 2019, 3:13 PM MDT for Sheridan County, Nebraska. It was in force for 47 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: Jul 28, 2019, 3:13 PM MDT (21:13 UTC)
Expired: Jul 28, 2019, 4:00 PM MDT
In force: 47 min
Issued by: NWS North Platte, NE

County Sheridan County, NE

The radar

The Rapid City radar (KUDX), 175 km from the middle of the area, began a volume at 21:15 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

Rapid City, SD (KUNR), launched 12:00Z, 9.2 hours before the alert went out and 169 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: 144 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 1720 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: -29 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 North Platte, NE wrote its last area forecast discussion before this special weather statement went out at Jul 28, 1:58 PM MDT, 1 hour 15 minutes earlier.

Area forecast discussion, Jul 28, 1:58 PM MDT, 1 hour 15 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, Jul 28, 2:18 PM MDT, 55 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, Jul 28, 3:13 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service North Platte NE
313 PM MDT Sun Jul 28 2019

NEZ004-282200-
Sheridan NE-
313 PM MDT Sun Jul 28 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SHERIDAN COUNTY UNTIL 400
PM MDT...

At 313 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hay Springs, moving southeast at 35 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Hay Springs, Diamond Lake, Smith Lake State Wildlife Management Area,
Highway 250 crossing the Niobrara River, Intersection of Highway 87
and Antelope Road and Walgren Lake State Recreation Area.

This includes the following highways...
 Highway 20 between mile markers 78 and 87.
 Highway 250 between mile markers 15 and 44.

LAT...LON 4276 10260 4240 10211 4222 10247 4260 10277
      4266 10277
TIME...MOT...LOC 2113Z 321DEG 32KT 4264 10264

Snively

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 27, 7:02 PM MDT	Special Weather Statement	LBF	Sheridan	28 min
Jul 27, 7:27 PM MDT	Special Weather Statement	LBF	Sheridan	18 min
Jul 27, 7:29 PM MDT	Special Weather Statement	LBF	Sheridan	46 min
Jul 27, 7:37 PM MDT	Special Weather Statement	LBF	Garden	38 min
Jul 27, 7:54 PM MDT	Special Weather Statement	LBF	Deuel	36 min
Jul 27, 8:20 PM MDT	Special Weather Statement	LBF	Deuel, Garden	40 min
Jul 27, 8:55 PM MDT	Special Weather Statement	LBF	Sheridan	35 min
Jul 27, 9:25 PM MDT	Special Weather Statement	LBF	Sheridan	35 min
Jul 27, 9:34 PM MDT	Special Weather Statement	LBF	Arthur, Chase, Keith, McPherson, Perkins	41 min
Jul 27, 10:12 PM MDT	Special Weather Statement	LBF	Hooker, McPherson	48 min
Jul 27, 10:15 PM MDT	Special Weather Statement	LBF	Hayes, Lincoln	45 min
Jul 27, 10:34 PM MDT	Special Weather Statement	LBF	Cherry	41 min
Jul 27, 10:50 PM MDT	Special Weather Statement	LBF	Logan, Thomas	40 min
Jul 28, 2:31 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	44 min
Jul 28, 3:57 PM MDT	Special Weather Statement	LBF	Sheridan	48 min
Jul 28, 4:28 PM MDT	Special Weather Statement	LBF	Grant	47 min

Nearby

Special Weather Statements in Nebraska, 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.