Alert archive / Kansas / Mesoscale Discussions in 2007

Mesoscale Discussion 180

February 23, 200724 counties in Kansas; 15 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2007, 6:45 PM CST for 24 counties in Kansas; 15 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Feb 23, 2007, 6:45 PM CST (00:45 UTC)
Expired
Feb 23, 2007, 8:45 PM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 39 counties

Barton County, KS, Cloud County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Hodgeman County, KS, Jewell County, KS, Lincoln County, KS, McPherson County, KS, Mitchell County, KS, Ness County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Stafford County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Fillmore County, NE, Franklin County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nuckolls County, NE, Sherman County, NE, Thayer County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 142 km from the middle of the area, began a volume at 00:45 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 0.8 hours before the alert went out and 169 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-pSkew-T log-p diagram, Dodge City, at 00:00Z on 2007-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 586 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 00:00Z on 2007-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 198 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
586 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
1239 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
198 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.4

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.

IssuedProductOfficeCountiesLasted
Feb 23, 6:15 PM CSTMesoscale DiscussionSPCClark, Comanche, Ford, Gray, Haskell, Kiowa and 2 more90 min
Feb 23, 7:35 PM CSTMesoscale DiscussionSPCBarber, Harper, Kingman, Pratt, Sedgwick, Sumner85 min
Feb 23, 8:29 PM CSTTornado WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 31 more7 hr
Feb 23, 10:31 PM CSTMesoscale DiscussionSPCCloud, Decatur, Graham, Jewell, Mitchell, Norton and 6 more119 min
Feb 23, 11:21 PM CSTMesoscale DiscussionSPCButler, Chase, Chautauqua, Clay, Cloud, Coffey and 30 more114 min
Feb 24, 6:49 AM CSTMesoscale DiscussionSPCCheyenne, Sherman4 hr
Feb 24, 9:40 AM CSTMesoscale DiscussionSPCBarton, Butler, Chase, Clay, Cloud, Cowley and 20 more2 hr
Feb 24, 11:15 AM CSTTornado WatchSPCAllen, Anderson, Barton, Butler, Chase, Chautauqua and 33 more6 hr
Feb 24, 1:34 PM CSTMesoscale DiscussionSPCCheyenne, Decatur, Rawlins, Sherman, Thomas, Wallace5 hr
Feb 24, 2:33 PM CSTMesoscale DiscussionSPCAllen, Anderson, Clay, Coffey, Dickinson, Franklin and 9 more87 min

Nearby

Mesoscale Discussions in Kansas, 2007Mesoscale Discussions in Nebraska, 2007Every 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.