Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 207, NWS Omaha, NE

June 19, 2014Cedar County, Knox County, Pierce County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 19, 2014, 12:56 AM CDT for Cedar County, Knox County, Pierce County, Nebraska. It was in force for 49 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: Jun 19, 2014, 12:56 AM CDT (05:56 UTC)
Expired: Jun 19, 2014, 1:45 AM CDT
In force: 49 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cedar County, NE, Knox County, NE, Pierce County, NE

The radar

The Sioux Falls radar (KFSD), 139 km from the middle of the area, began a volume at 05:58 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
Jun 18, 11:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 5.9 hours before the alert went out and 165 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: 4043 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1524 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jun 18, 6:37 PM CDT, 6 hours 19 minutes earlier.

Area forecast discussion, Jun 18, 6:37 PM CDT, 6 hours 19 minutes before

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Hazardous weather outlook, Jun 18, 10:36 PM CDT, 2 hours 20 minutes before

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In the hours before

Special weather statement, Jun 19, 12:12 AM CDT, 44 minutes before

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Local storm report, Jun 19, 12:37 AM CDT, 19 minutes before

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Special weather statement, Jun 19, 12:46 AM CDT, 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 12:12 AM CDT	Special Weather Statement	OAX	Antelope	48 min
Jun 19, 12:21 AM CDT	Severe Thunderstorm Warning	OAX	Antelope, Pierce	24 min
Jun 19, 12:46 AM CDT	Special Weather Statement	OAX	Pierce	44 min
Jun 19, 1:08 AM CDT	Severe Thunderstorm Warning	OAX	Cedar	37 min
Jun 19, 3:16 AM CDT	Severe Thunderstorm Warning	OAX	Boone	44 min
Jun 19, 2:25 PM CDT	Special Weather Statement	OAX	Pawnee	35 min
Jun 19, 3:00 PM CDT	Special Weather Statement	OAX	Nemaha	30 min
Jun 19, 6:06 PM CDT	Special Weather Statement	OAX	Richardson	39 min
Jun 19, 12:34 PM CDT	Special Weather Statement	OAX	Pottawattamie	26 min
Jun 19, 1:03 PM CDT	Special Weather Statement	OAX	Shelby	27 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2014 Every severe thunderstorm warning in 2014

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.