Alert archive / Kansas / Mesoscale Discussions in 2008

Mesoscale Discussion 509

March 31, 200838 counties in Kansas; 22 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Mar 31, 2008, 1:45 AM CDT for 38 counties in Kansas; 22 counties in Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 31, 2008, 1:45 AM CDT (06:45 UTC)
Expired
Mar 31, 2008, 3:45 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 60 counties

Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellsworth County, KS, Geary County, KS, Harper County, KS, Harvey County, KS, Jackson County, KS, Jewell County, KS, Kingman County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Smith County, KS, Stafford County, KS, Sumner County, KS, Wabaunsee County, KS, Washington County, KS, Adams County, NE, Butler County, NE, Clay County, NE, Fillmore County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Merrick County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE

The radar

The Topeka radar (KTWX), 100 km from the middle of the area, began a volume at 06:45 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

Topeka, KS (KTOP), launched 00:00Z, 6.8 hours before the alert went out and 150 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 00:00Z on 2008-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2008-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 168 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
542 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
168 m²/s²
0-3 km storm-relative helicity
436 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
Mar 30, 8:50 PM CDTMesoscale DiscussionSPCButler, Cowley, Harper, Sedgwick, Sumner55 min
Mar 30, 9:51 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Brown, Butler, Chase, Chautauqua and 37 more7 hr
Mar 30, 11:20 PM CDTMesoscale DiscussionSPCBarber, Barton, Brown, Butler, Chase, Chautauqua and 37 more55 min
Mar 31, 3:31 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Crawford, Franklin, Johnson and 5 more59 min
Mar 31, 4:09 AM CDTSevere Thunderstorm WatchSPCAtchison, Doniphan3 hr
Mar 31, 4:29 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 45 more91 min
Mar 31, 5:05 AM CDTSevere Thunderstorm WatchSPCAllen, Butler, Chase, Chautauqua, Cowley, Elk and 10 more7 hr
Mar 31, 5:59 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Nemaha91 min
Mar 31, 6:17 AM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Cherokee and 15 more88 min
Mar 31, 7:50 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Cowley, Crawford and 7 more85 min
Mar 31, 8:44 AM CDTTornado WatchSPCBourbon, Chautauqua, Cherokee, Cowley, Crawford, Elk and 4 more7 hr
Mar 31, 10:30 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Cowley and 8 more60 min
Mar 31, 2:30 AM CDTMesoscale DiscussionSPCBoyd, Holt, Keya Paha, Knox, Rock5 hr
Mar 31, 3:06 AM CDTSevere Thunderstorm WatchSPCButler, Cass, Douglas, Fillmore, Gage, Jefferson and 12 more3 hr

Nearby

Mesoscale Discussions in Kansas, 2008Mesoscale Discussions in Nebraska, 2008Every mesoscale discussion in 2008

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.