Alert archive / Kansas / Mesoscale Discussions in 2003
Mesoscale Discussion 563
The Storm Prediction Center issued this mesoscale discussion at Apr 24, 2003, 3:27 PM CDT for 21 counties in Kansas; 14 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2003, 3:27 PM CDT (20:27 UTC)
- Expired
- Apr 24, 2003, 5:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Anderson County, KS, Chase County, KS, Coffey County, KS, Dickinson County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Harvey County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Bates County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Cooper County, MO, Henry County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Morgan County, MO, Pettis County, MO, Ray County, MO, Saline County, MO
The radar
The Topeka radar (KTWX), 79 km from the middle of the area, began a volume at 20:29 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 12:00Z, 8.5 hours before the alert went out and 55 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 501 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
720 ACUS11 KWNS 242027 SWOMCD SPC MCD 242027 MOZ000-KSZ000-242230- MESOSCALE DISCUSSION 0563 NWS STORM PREDICTION CENTER NORMAN OK 0327 PM CDT THU APR 24 2003 AREAS AFFECTED...E-CENTRAL KS AND WRN MO CONCERNING...SEVERE THUNDERSTORM WATCH 158... VALID 242027Z - 242230Z SEVERE THUNDERSTORM WATCH 158 CONTINUES ACROSS E-CENTRAL KS AND WRN MO THROUGH 25/01Z...WITH LARGE HAIL THE PRIMARY THREAT. SCATTERED THUNDERSTORMS HAVE DEVELOPED ALONG ARCING LOW-LEVEL SHEAR/CONVERGENCE ZONE EXTENDING WSW-ENE FROM NEAR HUT TO EMP TO 20 SW MKC TO SZL. SUSTAINED CONVERGENCE COUPLED WITH MUCAPE VALUES AROUND 1000 J/KG SHOULD CONTINUE TO SUPPORT CONVECTION THROUGH THE EARLY EVENING HOURS. ALL STORMS SHOULD EXHIBIT SLOW NEWD STORM MOTIONS /10-15KT/ ALONG OR NEAR SURFACE BOUNDARY DURING THE NEXT SEVERAL HOURS. OWING TO VERTICALLY STACKED COLD LOW AND 996MB SURFACE CYCLONE LOCATED ACROSS S-CENTRAL KS...WBZ HEIGHTS ARE IN THE 5-6KFT RANGE...WHICH WILL LIKELY SUPPORT LARGE HAIL WITH STRONGER CELLS. ADDITIONALLY...STRENGTH OF LOW-LEVEL HORIZONTAL SHEAR AND STORM MOTION ALONG THE BOUNDARY/BAROCLINIC ZONE SUGGESTS THE POSSIBILITY OF AN ISOLATED TORNADO DURING THE NEXT FEW HOURS. RADAR BASED STORM-RELATIVE VELOCITY COUPLETS HAVE OCCASIONALLY BEEN NOTED WITH STRONGER STORMS ACROSS THE WW 158 AREA DURING THE PAST HOUR OR SO. ..BANACOS.. 04/24/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LSX...SGF...EAX...TOP...ICT... 37759784 38889787 39009697 39219521 39459350 39559279 38399278 38309343 38139472 37989599 37759788
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 1:11 AM CDT | Mesoscale Discussion | SPC | Harper, Harvey, Kingman, McPherson, Marion, Reno and 2 more | 2 hr |
| Apr 24, 12:03 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Coffey, Franklin, Linn and 3 more | 2 hr |
| Apr 24, 2:35 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Chase, Coffey, Dickinson, Douglas, Franklin and 15 more | 5 hr |
| Apr 24, 5:51 PM CDT | Mesoscale Discussion | SPC | Anderson, Butler, Chase, Coffey, Dickinson, Douglas and 18 more | 54 min |
| Apr 24, 5:52 PM CDT | Mesoscale Discussion | SPC | Benton, Camden, Carter, Christian, Dallas, Douglas and 12 more | 113 min |
| Apr 24, 6:35 PM CDT | Tornado Watch | SPC | Butler, Carter, Douglas, Dunklin, Howell, Oregon and 7 more | 5 hr |
Nearby
Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Missouri, 2003Every mesoscale discussion in 2003
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.