Alert archive / Nebraska / Mesoscale Discussions in 2015

Mesoscale Discussion 1135

June 23, 20154 counties in Kansas; Atchison County, Holt County, Nodaway County, Missouri; 14 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 23, 2015, 10:40 AM CDT for 4 counties in Kansas; Atchison County, Holt County, Nodaway County, Missouri; 14 counties in Nebraska. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Jun 23, 2015, 10:40 AM CDT (15:40 UTC)
Expired: Jun 23, 2015, 12:15 PM CDT
In force: 95 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 21 counties

Brown County, KS, Doniphan County, KS, Marshall County, KS, Nemaha County, KS, Atchison County, MO, Holt County, MO, Nodaway County, MO, Adams County, NE, Clay County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Thayer County, NE

The radar

The Omaha radar (KOAX), 127 km from the middle of the area, began a volume at 15:43 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 12:00Z, 3.7 hours before the alert went out and 127 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -102 m²/s²
0-3 km storm-relative helicity: -40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 22, 7:34 PM CDT	Mesoscale Discussion	SPC	Adair, Clark, Grundy, Knox, Lewis, Linn and 11 more	56 min
Jun 22, 7:57 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Audrain, Chariton, Knox, Lewis, Lincoln and 11 more	4 hr
Jun 22, 8:16 PM CDT	Mesoscale Discussion	SPC	Clark, Schuyler, Scotland	59 min
Jun 22, 9:41 PM CDT	Mesoscale Discussion	SPC	Adair, Audrain, Chariton, Knox, Lewis, Linn and 8 more	64 min

Nearby

Mesoscale Discussions in Nebraska, 2015 Mesoscale Discussions in Kansas, 2015 Mesoscale Discussions in Missouri, 2015 Every mesoscale discussion in 2015

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.