Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 140, NWS Omaha, NE

June 5, 2014Douglas County, Nebraska; Pottawattamie County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Jun 5, 2014, 6:41 PM CDT for Douglas County, Nebraska; Pottawattamie County, Iowa. It was in force for 34 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 5, 2014, 6:41 PM CDT (23:41 UTC)
Expired: Jun 5, 2014, 7:15 PM CDT
In force: 34 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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 23:44 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 5, 4:55 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.7 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: 446 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 593 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 51 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 5, 6:25 PM CDT, 16 minutes earlier.

Area forecast discussion, Jun 5, 6:25 PM CDT, 16 minutes before

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Hazardous weather outlook, Jun 5, 5:15 PM CDT, 1 hour 26 minutes before

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In the hours before

Special weather statement, Jun 5, 5:26 PM CDT, 1 hour 15 minutes before

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Special weather statement, Jun 5, 5:36 PM CDT, 1 hour 5 minutes before

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Special weather statement, Jun 5, 5:51 PM CDT, 50 minutes before

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Special weather statement, Jun 5, 5:53 PM CDT, 48 minutes before

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Special weather statement, Jun 5, 6:24 PM CDT, 17 minutes before

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Local storm report, Jun 5, 6:40 PM CDT, 1 minute 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 5, 6:29 AM CDT	River Flood Warning	OAX	Saline	57 hr
Jun 5, 2:26 PM CDT	Special Weather Statement	OAX	Thurston	34 min
Jun 5, 2:31 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	29 min
Jun 5, 3:01 PM CDT	Special Weather Statement	OAX	Thurston	44 min
Jun 5, 3:03 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	27 min
Jun 5, 3:14 PM CDT	Special Weather Statement	OAX	Thurston	31 min
Jun 5, 3:17 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	43 min
Jun 5, 3:30 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	45 min
Jun 5, 3:57 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	33 min
Jun 5, 4:07 PM CDT	Special Weather Statement	OAX	Burt	38 min
Jun 5, 4:12 PM CDT	Severe Thunderstorm Warning	OAX	Burt	33 min
Jun 5, 4:20 PM CDT	Special Weather Statement	OAX	Burt	40 min
Jun 5, 4:44 PM CDT	Special Weather Statement	OAX	Burt	46 min
Jun 5, 5:12 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Washington	38 min
Jun 5, 5:36 PM CDT	Special Weather Statement	OAX	Washington	39 min
Jun 5, 4:14 PM CDT	Severe Thunderstorm Warning	OAX	Monona	46 min
Jun 5, 4:32 PM CDT	Severe Thunderstorm Warning	OAX	Monona	43 min
Jun 5, 4:59 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Monona	24 min
Jun 5, 5:26 PM CDT	Special Weather Statement	OAX	Harrison	49 min
Jun 5, 5:51 PM CDT	Special Weather Statement	OAX	Harrison	24 min
Jun 5, 5:53 PM CDT	Special Weather Statement	OAX	Harrison	37 min
Jun 5, 6:24 PM CDT	Special Weather Statement	OAX	Pottawattamie	51 min
Jun 5, 6:33 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	27 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2014 Severe Thunderstorm Warnings in Iowa, 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.