Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 79, NWS Omaha, NE

July 7, 1997Cedar County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 7, 1997, 4:17 PM CDT for Cedar County, Nebraska. It was in force for 63 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 7, 1997, 4:17 PM CDT (21:17 UTC)
Expired: Jul 7, 1997, 5:20 PM CDT
In force: 63 min
Issued by: NWS Omaha, NE
Area: Whole counties

County Cedar County, NE

The radar

The Sioux Falls radar (KFSD), 118 km from the middle of the area, began a volume at 21:16 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.

What was reported inside it

Time	Report	Where	Remark
Jul 7, 4:45 PM CDT	Hail 2.75	Crofton, NE	Large hail damaged corn crops.
Jul 7, 4:57 PM CDT	Hail 1.75	Hartington, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 7, 4:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.3 hours before the alert went out and 160 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 929 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jul 7, 10:50 AM CDT, 5 hours 27 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
Jul 7, 3:44 PM CDT	Severe Thunderstorm Warning	OAX	Knox	51 min
Jul 7, 4:28 PM CDT	Severe Thunderstorm Warning	OAX	Antelope	62 min
Jul 7, 4:34 PM CDT	Severe Thunderstorm Warning	OAX	Knox	31 min
Jul 7, 5:06 PM CDT	Tornado Warning	OAX	Pierce	49 min
Jul 7, 5:20 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	50 min
Jul 7, 5:45 PM CDT	Severe Thunderstorm Warning	OAX	Madison	50 min
Jul 7, 5:58 PM CDT	Severe Thunderstorm Warning	OAX	Wayne	62 min
Jul 7, 6:03 PM CDT	Severe Thunderstorm Warning	OAX	Pierce	47 min
Jul 7, 6:11 PM CDT	Tornado Warning	OAX	Madison	49 min
Jul 7, 6:11 PM CDT	Tornado Warning	OAX	Stanton	64 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.