Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 166, NWS Omaha, NE

August 16, 2020Madison County, Stanton County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Aug 16, 2020, 2:57 PM CDT for Madison County, Stanton County, Nebraska. It was in force for 18 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: Aug 16, 2020, 2:57 PM CDT (19:57 UTC)
Expired: Aug 16, 2020, 3:15 PM CDT
In force: 18 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Madison County, NE, Stanton County, NE

The radar

The Omaha radar (KOAX), 108 km from the middle of the area, began a volume at 19:58 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
Aug 16, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.0 hours before the alert went out and 281 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: 1671 J/kg
Mixed-layer CIN: -219 J/kg
Mixed-layer LCL: 1180 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

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 Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 15, 6:33 PM CDT, 20 hours 24 minutes earlier.

Area forecast discussion, Aug 15, 6:33 PM CDT, 20 hours 24 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, Aug 15, 3:41 PM CDT, 23 hours 16 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
Aug 16, 9:16 AM CDT	Special Weather Statement	OAX	Madison	29 min
Aug 16, 9:40 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison	25 min
Aug 16, 3:10 PM CDT	Severe Thunderstorm Warning	OAX	Madison, Stanton	35 min
Aug 16, 3:30 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Cuming, Madison, Platte, Stanton	45 min
Aug 16, 3:32 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Dodge	28 min
Aug 16, 3:38 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Dodge, Saunders	37 min
Aug 16, 3:48 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison	42 min
Aug 16, 3:55 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Saunders	35 min
Aug 16, 4:06 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Platte, Stanton	24 min
Aug 16, 4:18 PM CDT	Severe Thunderstorm Warning	OAX	Saunders	27 min
Aug 16, 4:27 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Saunders	48 min
Aug 16, 4:41 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saunders	34 min
Aug 16, 5:02 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Cass, Lancaster, Otoe, Saline, Saunders and 1 more	43 min
Aug 16, 5:06 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	25 min
Aug 16, 5:18 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Saunders	27 min
Aug 16, 5:34 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Johnson, Lancaster, Otoe	41 min
Aug 16, 5:44 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Lancaster, Saunders, Seward	46 min
Aug 16, 6:08 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Gage, Lancaster, Saline, Saunders, Seward	37 min
Aug 16, 6:21 PM CDT	Severe Thunderstorm Warning	OAX	Stanton, Wayne	39 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2020 Every severe thunderstorm warning in 2020

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.