Alert archive / Nebraska / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 256, NWS Omaha, NE

October 6, 2016Lancaster County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Oct 6, 2016, 10:53 AM CDT for Lancaster County, Nebraska. It was in force for 52 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 6, 2016, 10:53 AM CDT (15:53 UTC)
Expired: Oct 6, 2016, 11:45 AM CDT
In force: 52 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

County Lancaster County, NE

The radar

The Omaha radar (KOAX), 65 km from the middle of the area, began a volume at 15:52 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 12:00Z, 3.9 hours before the alert went out and 65 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: 96 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 6, 6:32 AM CDT, 4 hours 21 minutes earlier.

Area forecast discussion, Oct 6, 6:32 AM CDT, 4 hours 21 minutes before

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Hazardous weather outlook, Oct 6, 3:52 AM CDT, 7 hours 1 minute before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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 6, 11:30 AM CDT	Special Weather Statement	OAX	Cass	45 min
Oct 6, 11:34 AM CDT	Special Weather Statement	OAX	Seward	26 min
Oct 6, 12:14 PM CDT	Special Weather Statement	OAX	Sarpy	31 min
Oct 6, 12:21 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	24 min
Oct 6, 1:26 PM CDT	Frost Advisory	OAX	Antelope, Boone, Butler, Cedar, Colfax, Cuming and 9 more	20 hr
Oct 6, 2:57 PM CDT	Special Weather Statement	OAX	Pierce	33 min
Oct 6, 3:05 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox, Pierce	25 min
Oct 6, 3:30 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	11 min
Oct 6, 4:16 PM CDT	Special Weather Statement	OAX	Jefferson	29 min
Oct 6, 4:21 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson	24 min
Oct 6, 4:42 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson, Saline	33 min
Oct 6, 5:55 PM CDT	Special Weather Statement	OAX	Saunders	20 min
Oct 6, 12:40 PM CDT	Special Weather Statement	OAX	Pottawattamie	35 min
Oct 6, 6:48 PM CDT	Special Weather Statement	OAX	Fremont, Mills	27 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2016 Every severe thunderstorm warning in 2016

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.