Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 1048

June 17, 2014Cedar County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2014, 8:29 PM CDT for Cedar County, Nebraska. It was in force for 31 min.

The area

The outline as issued.

The facts

Issued: Jun 17, 2014, 8:29 PM CDT (01:29 UTC)
Expired: Jun 17, 2014, 9:00 PM CDT
In force: 31 min
Issued by: the Storm Prediction Center

County Cedar County, NE

The radar

The Sioux Falls radar (KFSD), 127 km from the middle of the area, began a volume at 01:29 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, 1.5 hours before the alert went out and 151 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: 4092 J/kg
Mixed-layer CIN: -70 J/kg
Mixed-layer LCL: 1440 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 14.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 17, 10:18 PM CDT	Mesoscale Discussion	SPC	Antelope, Cedar, Dakota, Dixon, Knox, Pierce and 2 more	57 min
Jun 17, 11:01 PM CDT	Mesoscale Discussion	SPC	Dakota, Dixon	29 min
Jun 17, 11:39 PM CDT	Tornado Watch	SPC	Dakota, Dixon	5 hr
Jun 18, 1:52 AM CDT	Mesoscale Discussion	SPC	Dakota	83 min
Jun 18, 3:29 PM CDT	Mesoscale Discussion	SPC	Antelope, Boyd, Cedar, Dakota, Dixon, Holt and 6 more	91 min
Jun 18, 6:23 PM CDT	Tornado Watch	SPC	Antelope, Boyd, Cedar, Dakota, Dixon, Holt and 3 more	5 hr

Nearby

Mesoscale Discussions in Nebraska, 2014 Every mesoscale discussion 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.