Alert archive / Kansas / Mesoscale Discussions in 2005

Mesoscale Discussion 494

April 5, 20055 states

The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2005, 6:50 PM CDT for 5 states. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued
Apr 5, 2005, 6:50 PM CDT (23:50 UTC)
Expired
Apr 5, 2005, 7:45 PM CDT
In force
55 min
Issued by
the Storm Prediction Center
All 87 counties

Benton County, AR, Washington County, AR, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Clay County, KS, Cloud County, KS, Coffey County, KS, Crawford County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Ellis County, KS, Ellsworth County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Lincoln County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, Miami County, KS, Mitchell County, KS, Montgomery County, KS, Morris County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Shawnee County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Buchanan County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Dade County, MO, Henry County, MO, Holt County, MO, Jackson County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Platte County, MO, St. Clair County, MO, Vernon County, MO, Jefferson County, NE, Nuckolls County, NE, Pawnee County, NE, Richardson County, NE, Thayer County, NE, Webster County, NE, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Washington County, OK

The radar

The Topeka radar (KTWX), 81 km from the middle of the area, began a volume at 23:50 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, 11.8 hours before the alert went out and 111 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 2005-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 225 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, Topeka, KS at 12:00Z on 2005-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 square meters per square second.193958Sfc1 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
225 J/kg
Mixed-layer CIN
-554 J/kg
Mixed-layer LCL
702 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
137 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
Apr 5, 2:30 PM CDTSevere Thunderstorm WatchSPCBenton, Crawford, Franklin, Madison, Washington7 hr
Apr 5, 2:30 PM CDTTornado WatchSPCLittle River, Polk, Scott, Sebastian, Sevier7 hr
Apr 5, 3:55 PM CDTMesoscale DiscussionSPCBenton, Crawford, Franklin, Madison, Washington95 min
Apr 5, 11:02 AM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Decatur, Dickinson, Ellis and 33 more118 min
Apr 5, 1:58 PM CDTMesoscale DiscussionSPCChautauqua, Cowley, Elk, Montgomery92 min
Apr 5, 2:05 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Cowley, Decatur, Edwards, Ellis and 29 more7 hr
Apr 5, 2:25 PM CDTMesoscale DiscussionSPCClark, Comanche2 hr
Apr 5, 4:45 PM CDTSevere Thunderstorm WatchSPCAnderson, Chase, Clay, Cloud, Coffey, Dickinson and 16 more7 hr
Apr 5, 5:14 PM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Cherokee, Choctaw, Delaware and 13 more2 hr

Nearby

Mesoscale Discussions in Kansas, 2005Mesoscale Discussions in Missouri, 2005Mesoscale Discussions in Nebraska, 2005Every mesoscale discussion in 2005

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.