Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 355, NWS Omaha, NE

October 14, 2007Douglas County, Nebraska; Pottawattamie County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Oct 14, 2007, 2:53 AM CDT for Douglas County, Nebraska; Pottawattamie County, Iowa. It was in force for 37 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: Oct 14, 2007, 2:53 AM CDT (07:53 UTC)
Expired: Oct 14, 2007, 3:30 AM CDT
In force: 37 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

Counties Pottawattamie County, IA, Douglas County, NE

The radar

The Omaha radar (KOAX), 43 km from the middle of the area, began a volume at 07:53 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

Omaha, NE (KOAX), launched 00:00Z, 7.9 hours before the alert went out and 44 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: 528 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Oct 13, 2:57 PM CDT, 11 hours 56 minutes earlier.

Area forecast discussion, Oct 13, 2:57 PM CDT, 11 hours 56 minutes before

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Hazardous weather outlook, Oct 13, 5:16 PM CDT, 9 hours 37 minutes before

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</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.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 2:41 AM CDT	Severe Thunderstorm Warning	OAX	Saunders	34 min
Oct 14, 3:05 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe	46 min
Oct 14, 3:13 AM CDT	Severe Thunderstorm Warning	OAX	Sarpy	32 min
Oct 14, 3:19 AM CDT	Severe Thunderstorm Warning	OAX	Gage	20 min
Oct 14, 3:03 PM CDT	Flash Flood Watch	OAX	Burt, Butler, Cass, Colfax, Dodge, Douglas and 13 more	13 hr
Oct 14, 4:20 PM CDT	Severe Thunderstorm Warning	OAX	Gage	25 min
Oct 14, 3:30 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	45 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2007 Severe Thunderstorm Warnings in Iowa, 2007 Every severe thunderstorm warning in 2007

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.