Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 1535

June 29, 20054 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2005, 1:30 AM CDT for 4 counties in Nebraska. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued: Jun 29, 2005, 1:30 AM CDT (06:30 UTC)
Expired: Jun 29, 2005, 3:00 AM CDT
In force: 90 min
Issued by: the Storm Prediction Center

Counties Brown County, NE, Cherry County, NE, Keya Paha County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 64 km from the middle of the area, began a volume at 06:31 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 6.5 hours before the alert went out and 155 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: 2893 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1366 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

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 28, 7:10 PM CDT	Severe Thunderstorm Watch	SPC	Arthur, Chase, Cheyenne, Deuel, Dundy, Frontier and 13 more	5 hr
Jun 28, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	Blaine, Boyd, Brown, Garfield, Holt, Keya Paha and 4 more	5 hr
Jun 28, 10:15 PM CDT	Mesoscale Discussion	SPC	Cherry, Keya Paha, Sheridan	60 min
Jun 28, 10:34 PM CDT	Mesoscale Discussion	SPC	Arthur, Chase, Cheyenne, Deuel, Dundy, Frontier and 11 more	86 min
Jun 29, 2:45 PM CDT	Mesoscale Discussion	SPC	Gage, Jefferson, Johnson, Lancaster, Nemaha, Otoe and 3 more	2 hr
Jun 29, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	Burt, Cass, Dodge, Douglas, Gage, Jefferson and 10 more	6 hr
Jun 29, 6:50 PM CDT	Mesoscale Discussion	SPC	Cass, Douglas, Gage, Jefferson, Johnson, Lancaster and 10 more	85 min

Nearby

Mesoscale Discussions in Nebraska, 2005 Every mesoscale discussion in 2005

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.