Alert archive / Kansas / Mesoscale Discussions in 2007

Mesoscale Discussion 2042

September 30, 20075 states

The Storm Prediction Center issued this mesoscale discussion at Sep 30, 2007, 12:10 PM CDT for 5 states. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Sep 30, 2007, 12:10 PM CDT (17:10 UTC)
Expired
Sep 30, 2007, 1:15 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 76 counties

Adams County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, Miami County, KS, Montgomery County, KS, Morris County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Bates County, MO, Buchanan County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, DeKalb County, MO, Gentry County, MO, Holt County, MO, Jackson County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO, Cass County, NE, Gage County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Kay County, OK, Nowata County, OK, Osage County, OK, Washington County, OK

The radar

The Topeka radar (KTWX), 40 km from the middle of the area, began a volume at 17:10 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

Topeka, KS (KTOP), launched 12:00Z, 5.2 hours before the alert went out and 26 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, Topeka, KS at 12:00Z on 2007-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Topeka, KS at 12:00Z on 2007-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1355 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
113 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.

IssuedProductOfficeCountiesLasted
Sep 30, 10:13 AM CDTMesoscale DiscussionSPCAudubon, Boone, Calhoun, Carroll, Cass, Cerro Gordo and 19 more2 hr
Sep 30, 1:02 PM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 47 more7 hr
Sep 30, 2:26 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Iowa, Jasper and 16 more64 min
Sep 30, 3:36 PM CDTMesoscale DiscussionSPCCherokee, Crawford, Harrison, Ida, Lyon, Monona and 6 more54 min
Sep 30, 5:45 PM CDTMesoscale DiscussionSPCAdair, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 26 more60 min
Sep 29, 9:31 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Greeley, Hamilton, Kearny, Logan and 8 more89 min
Sep 29, 10:38 PM CDTSevere Thunderstorm WatchSPCGove, Graham, Norton, Phillips, Rooks, Sheridan3 hr
Sep 30, 12:37 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 35 more7 hr
Sep 30, 6:13 PM CDTMesoscale DiscussionSPCCherokee, Crawford, Labette92 min
Sep 30, 2:23 PM CDTMesoscale DiscussionSPCBarry, McDonald, Newton, Stone67 min
Sep 30, 2:51 PM CDTSevere Thunderstorm WatchSPCBarry, McDonald, Stone, Taney6 hr
Sep 30, 11:01 AM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Boyd, Buffalo, Butler and 32 more59 min

Nearby

Mesoscale Discussions in Kansas, 2007Mesoscale Discussions in Missouri, 2007Mesoscale Discussions in Iowa, 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.