Alert archive / Kansas / Mesoscale Discussions in 2008

Mesoscale Discussion 2231

September 8, 200817 counties in Kansas; 10 counties in Missouri; Richardson County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at Sep 8, 2008, 5:17 AM CDT for 17 counties in Kansas; 10 counties in Missouri; Richardson County, Nebraska. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Sep 8, 2008, 5:17 AM CDT (10:17 UTC)
Expired
Sep 8, 2008, 7:45 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 28 counties

Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Doniphan County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Washington County, KS, Wyandotte County, KS, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Clay County, MO, Clinton County, MO, DeKalb County, MO, Holt County, MO, Jackson County, MO, Platte County, MO, Ray County, MO, Richardson County, NE

The radar

The Topeka radar (KTWX), 64 km from the middle of the area, began a volume at 10:18 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

Topeka, KS (KTOP), launched 00:00Z, 10.3 hours before the alert went out and 37 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 2008-09-08Temperature 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 00:00Z on 2008-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
1250 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 7, 9:12 PM CDTMesoscale DiscussionSPCCheyenne, Clay, Cloud, Decatur, Graham, Jewell and 12 more3 hr
Sep 7, 9:49 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Ellis, Gove, Graham, Logan and 9 more7 hr
Sep 7, 11:44 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Greeley and 16 more91 min
Sep 8, 1:22 PM CDTMesoscale DiscussionSPCBollinger, Camden, Cape Girardeau, Carter, Crawford, Dallas and 28 more83 min

Nearby

Mesoscale Discussions in Kansas, 2008Mesoscale Discussions in Missouri, 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.