Alert archive / Kansas / Mesoscale Discussions in 2003
Mesoscale Discussion 365
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2003, 8:39 PM CST for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2003, 8:39 PM CST (02:39 UTC)
- Expired
- Apr 3, 2003, 10:45 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 74 counties
Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Marion County, KS, Marshall County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Ray County, MO, Schuyler County, MO, Sullivan County, MO, Worth County, MO, Gage County, NE, Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE
The radar
The Topeka radar (KTWX), 106 km from the middle of the area, began a volume at 02:39 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, 2.7 hours before the alert went out and 89 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
- 506 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1370 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 148 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
743 ACUS11 KWNS 040239 SWOMCD SPC MCD 040239 IAZ000-MOZ000-KSZ000-NEZ000-040445- MESOSCALE DISCUSSION 0365 NWS STORM PREDICTION CENTER NORMAN OK 0839 PM CST THU APR 03 2003 AREAS AFFECTED...NORTH CENTRAL/NERN KS...FAR SERN NEB...NRN MO...SWRN IA CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 040239Z - 040445Z THUNDERSTORMS ARE EXPECTED TO DEVELOP BETWEEN 03-06Z OVER NORTH CENTRAL KS AND THEN SPREAD NEWD LATE THIS EVENING/OVERNIGHT INTO SWRN IA/NRN MO. WW MAY BE REQUIRED IN THE NEXT 1-2 HOURS FOR NORTH CENTRAL/NERN KS INTO FAR SERN NEB TO NRN MO/SWRN IA. 02Z SURFACE ANALYSIS SHOWS THE COLD FRONT EXTENDS FROM CENTRAL IA...NEAR DSM...SWWD THROUGH FAR SERN NEB AND INTO NORTH CENTRAL KS. A DRY LINE EXTENDS SWWD FROM NEAR CNK TO GBD AND THEN SWD INTO WRN OK. A STRENGTHENING SLY LLJ FROM WRN OK INTO CENTRAL KS IS ADVECTING MOISTURE NWD INTO CENTRAL PORTIONS OF KS...AS OBJECTIVE ANALYSES INDICATE ONGOING AIR MASS DESTABILIZATION WITHIN THE WARM SECTOR. MODERATE INSTABILITY COMBINED WITH DEEP LAYER SHEAR WILL BE FAVORABLE FOR ORGANIZED STORMS WITH SUPERCELLS AS AN UPPER SHORT WAVE TROUGH MOVES INTO THE CENTRAL PLAINS THIS EVENING. STORMS WILL LIKELY DEVELOP OVER NORTH CENTRAL KS...IN THE VICINITY OF THE COLD FRONT/DRY LINE INTERSECTION...WITH STORMS THEN MOVING NEWD ALONG AND NORTH OF THE COLD FRONT. LARGE HAIL/ DAMAGING WINDS WILL BE THE PRIMARY THREATS. ..PETERS.. 04/04/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...DVN...DMX...EAX...OAX...TOP...ICT...GID... 39139827 39899768 40689585 41569327 41199220 39569264 38809459 38249739
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 9:20 PM CST | Severe Thunderstorm Watch | SPC | Appanoose, Decatur, Monroe, Ringgold, Wayne | 6 hr |
| Apr 3, 11:44 PM CST | Mesoscale Discussion | SPC | Appanoose, Clarke, Decatur, Lucas, Monroe, Page and 3 more | 2 hr |
| Apr 4, 1:47 AM CST | Mesoscale Discussion | SPC | Appanoose, Clarke, Decatur, Lucas, Monroe, Page and 3 more | 88 min |
| Apr 4, 1:33 PM CST | Mesoscale Discussion | SPC | Allamakee, Clayton, Fayette | 6 hr |
| Apr 4, 7:23 AM CST | Mesoscale Discussion | SPC | Lincoln, Pike, Saint Charles, Saint Louis, City of Saint Louis | 97 min |
| Apr 4, 11:10 AM CST | Mesoscale Discussion | SPC | Audrain, Benton, Boone, Callaway, Camden, Cole and 23 more | 95 min |
| Apr 4, 12:05 PM CST | Tornado Watch | SPC | Audrain, Benton, Boone, Callaway, Camden, Carroll and 28 more | 5 hr |
| Apr 4, 1:12 PM CST | Mesoscale Discussion | SPC | Audrain, Boone, Callaway, Camden, Christian, Cole and 38 more | 93 min |
| Apr 4, 4:25 PM CST | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 22 more | 6 hr |
| Apr 4, 4:43 PM CST | Mesoscale Discussion | SPC | Dunklin, Pemiscot | 3 hr |
Nearby
Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Iowa, 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.