Alert archive / Nebraska / Mesoscale Discussions in 2011

Mesoscale Discussion 1380

June 25, 2011Brown County, Marshall County, Nemaha County, Kansas; Atchison County, Holt County, Missouri; 21 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2011, 1:46 AM CDT for Brown County, Marshall County, Nemaha County, Kansas; Atchison County, Holt County, Missouri; 21 counties in Nebraska. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Jun 25, 2011, 1:46 AM CDT (06:46 UTC)
Expired: Jun 25, 2011, 3:15 AM CDT
In force: 89 min
Issued by: the Storm Prediction Center

All 26 counties

Brown County, KS, Marshall County, KS, Nemaha County, KS, Atchison County, MO, Holt County, MO, Adams County, NE, Buffalo County, NE, Clay County, NE, Fillmore County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 91 km from the middle of the area, began a volume at 06:47 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, 6.8 hours before the alert went out and 128 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: 1910 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 92 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 25, 1:27 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Butler, Chautauqua, Coffey and 9 more	2 hr
Jun 25, 3:51 AM CDT	Mesoscale Discussion	SPC	Adair, Audrain, Bollinger, Boone, Butler, Caldwell and 60 more	84 min
Jun 25, 11:17 AM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 31 more	118 min
Jun 25, 1:06 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Franklin and 18 more	3 hr
Jun 25, 2:59 PM CDT	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Iron, Jefferson, Madison and 12 more	91 min
Jun 25, 2:24 PM CDT	Mesoscale Discussion	SPC	Banner, Box Butte, Dawes, Kimball, Morrill, Scotts Bluff and 1 more	96 min
Jun 25, 6:21 PM CDT	Mesoscale Discussion	SPC	Arthur, Box Butte, Cherry, Dawes, Garden, Grant and 5 more	84 min

Nearby

Mesoscale Discussions in Nebraska, 2011 Mesoscale Discussions in Kansas, 2011 Mesoscale Discussions in Missouri, 2011 Every mesoscale discussion in 2011

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.