Alert archive / Nebraska / Mesoscale Discussions in 2005

Mesoscale Discussion 1533

June 28, 2005Phillips County, Sedgwick County, Yuma County, Colorado; 17 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2005, 9:34 PM MDT for Phillips County, Sedgwick County, Yuma County, Colorado; 17 counties in Nebraska. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Jun 28, 2005, 9:34 PM MDT (03:34 UTC)
Expired: Jun 28, 2005, 11:00 PM MDT
In force: 86 min
Issued by: the Storm Prediction Center

Counties Phillips County, CO, Sedgwick County, CO, Yuma County, CO, Arthur County, NE, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Garden County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Morrill County, NE, Perkins County, NE, Red Willow County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 145 km from the middle of the area, began a volume at 03:34 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, 3.6 hours before the alert went out and 66 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, 6:10 PM MDT	Severe Thunderstorm Watch	SPC	Phillips, Sedgwick, Yuma	5 hr
Jun 28, 6:44 PM MDT	Mesoscale Discussion	SPC	Archuleta, Chaffee, Delta, Dolores, Eagle, Garfield and 15 more	61 min
Jun 28, 6:15 PM MDT	Severe Thunderstorm Watch	SPC	Blaine, Boyd, Brown, Garfield, Holt, Keya Paha and 4 more	5 hr
Jun 28, 9:15 PM MDT	Mesoscale Discussion	SPC	Cherry, Keya Paha, Sheridan	60 min
Jun 29, 12:30 AM MDT	Mesoscale Discussion	SPC	Brown, Cherry, Keya Paha, Rock	90 min
Jun 29, 1:45 PM MDT	Mesoscale Discussion	SPC	Gage, Jefferson, Johnson, Lancaster, Nemaha, Otoe and 3 more	2 hr
Jun 29, 3:50 PM MDT	Severe Thunderstorm Watch	SPC	Burt, Cass, Dodge, Douglas, Gage, Jefferson and 10 more	6 hr
Jun 29, 5:50 PM MDT	Mesoscale Discussion	SPC	Cass, Douglas, Gage, Jefferson, Johnson, Lancaster and 10 more	85 min

Nearby

Mesoscale Discussions in Nebraska, 2005 Mesoscale Discussions in Colorado, 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.