Alert archive / North Dakota / Special Weather Statements in 2018

Special Weather Statement, NWS Grand Forks, ND

May 30, 2018Barnes County, North Dakota

NWS Grand Forks, ND issued this special weather statement at May 30, 2018, 3:17 PM CDT for Barnes County, North Dakota. It was in force for 58 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 30, 2018, 3:17 PM CDT (20:17 UTC)
Expired: May 30, 2018, 4:15 PM CDT
In force: 58 min
Issued by: NWS Grand Forks, ND

County Barnes County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 96 km from the middle of the area, began a volume at 20:21 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 399 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: 71 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 897 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Grand Forks, ND wrote its last area forecast discussion before this special weather statement went out at May 29, 6:35 PM CDT, 20 hours 42 minutes earlier.

Area forecast discussion, May 29, 6:35 PM CDT, 20 hours 42 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>
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</body>
</html>

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 12:19 PM CDT	Special Weather Statement	FGF	Nelson	26 min
May 30, 12:33 PM CDT	Special Weather Statement	FGF	Steele	27 min
May 30, 12:58 PM CDT	Special Weather Statement	FGF	Barnes	62 min
May 30, 1:11 PM CDT	Special Weather Statement	FGF	Grand Forks	64 min
May 30, 1:41 PM CDT	Areal Flood Advisory	FGF	Barnes, Steele	34 min
May 30, 1:47 PM CDT	Special Weather Statement	FGF	Grand Forks	58 min
May 30, 2:15 PM CDT	Areal Flood Advisory	FGF	Barnes, Steele	60 min

Nearby

Special Weather Statements in North Dakota, 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.