Alert archive / Nebraska / Mesoscale Discussions in 2007

Mesoscale Discussion 184

February 23, 200712 counties in Kansas; 13 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2007, 10:31 PM CST for 12 counties in Kansas; 13 counties in Nebraska. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Feb 23, 2007, 10:31 PM CST (04:31 UTC)
Expired: Feb 24, 2007, 12:30 AM CST
In force: 119 min
Issued by: the Storm Prediction Center

All 25 counties

Cloud County, KS, Decatur County, KS, Graham County, KS, Jewell County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Republic County, KS, Rooks County, KS, Sheridan County, KS, Smith County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 62 km from the middle of the area, began a volume at 04:34 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, 4.5 hours before the alert went out and 165 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: 1922 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 134 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
Feb 23, 6:15 PM CST	Mesoscale Discussion	SPC	Clark, Comanche, Ford, Gray, Haskell, Kiowa and 2 more	90 min
Feb 23, 6:45 PM CST	Mesoscale Discussion	SPC	Barton, Cloud, Edwards, Ellis, Ellsworth, Hodgeman and 18 more	2 hr
Feb 23, 7:35 PM CST	Mesoscale Discussion	SPC	Barber, Harper, Kingman, Pratt, Sedgwick, Sumner	85 min
Feb 23, 8:29 PM CST	Tornado Watch	SPC	Barber, Barton, Clark, Comanche, Edwards, Ellis and 31 more	7 hr
Feb 23, 11:21 PM CST	Mesoscale Discussion	SPC	Butler, Chase, Chautauqua, Clay, Cloud, Coffey and 30 more	114 min
Feb 24, 6:49 AM CST	Mesoscale Discussion	SPC	Cheyenne, Sherman	4 hr
Feb 24, 9:40 AM CST	Mesoscale Discussion	SPC	Barton, Butler, Chase, Clay, Cloud, Cowley and 20 more	2 hr
Feb 24, 11:15 AM CST	Tornado Watch	SPC	Allen, Anderson, Barton, Butler, Chase, Chautauqua and 33 more	6 hr
Feb 24, 1:34 PM CST	Mesoscale Discussion	SPC	Cheyenne, Decatur, Rawlins, Sherman, Thomas, Wallace	5 hr
Feb 24, 2:33 PM CST	Mesoscale Discussion	SPC	Allen, Anderson, Clay, Coffey, Dickinson, Franklin and 9 more	87 min

Nearby

Mesoscale Discussions in Nebraska, 2007 Mesoscale Discussions in Kansas, 2007 Every mesoscale discussion in 2007

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.