Alert archive / Kansas / Mesoscale Discussions in 2003
Mesoscale Discussion 367
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2003, 11:44 PM CST for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2003, 11:44 PM CST (05:44 UTC)
- Expired
- Apr 4, 2003, 1:45 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 59 counties
Appanoose County, IA, Clarke County, IA, Decatur County, IA, Lucas County, IA, Monroe County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Wayne County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Ellsworth County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Washington County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Linn County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Sullivan County, MO, Worth County, MO, Gage County, NE, Jefferson County, NE, Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE, Thayer County, NE
The radar
The Topeka radar (KTWX), 85 km from the middle of the area, began a volume at 05:48 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, 5.7 hours before the alert went out and 93 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.
548 ACUS11 KWNS 040545 SWOMCD SPC MCD 040544 IAZ000-MOZ000-KSZ000-NEZ000-040745- MESOSCALE DISCUSSION 0367 NWS STORM PREDICTION CENTER NORMAN OK 1144 PM CST THU APR 03 2003 AREAS AFFECTED...NORTH CENTRAL/NERN KS...FAR SERN NEB...NWRN MO...AND SRN IA CONCERNING...SEVERE THUNDERSTORM WATCH 84... VALID 040544Z - 040745Z THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG AND NORTH OF A COLD FRONT OVER NORTH CENTRAL/NERN KS DURING THE NEXT FEW HOURS WITH ACTIVITY SPREADING NEWD INTO FAR SERN NEB/NWRN MO/SWRN IA. LARGE HAIL WILL REMAIN THE PRIMARY THREAT WITH THE STRONGEST STORMS... GIVEN THAT MOST OF THE STORMS ARE EXPECTED TO BE ELEVATED. 05Z SURFACE ANALYSIS PLACES A SURFACE LOW NEAR OTM WITH A COLD FRONT EXTENDING SWWD INTO NWRN MO...NEAR STJ AND THEN WSWWD INTO NRN KS. MODERATELY UNSTABLE AIR MASS SOUTH OF THIS BOUNDARY IN CENTRAL/ERN KS WILL CONTINUE TO FUEL/AID IN CONVECTIVE DEVELOPMENT FOR ELEVATED STORMS...AS A 50 KT SSWLY LLJ OVER CENTRAL OK INTO SRN KS IMPINGES ON THE COLD FRONT. STRONG DEEP LAYER SHEAR WILL SUPPORT SUPERCELLS WITH STEEP LAPSE RATES RESULTING IN LARGE HAIL. THE LLJ SHOULD BEGIN TO VEER TO THE SW BETWEEN 06-09Z...SUGGESTING STORMS WILL EVENTUALLY MOVE INTO NWRN MO/SWRN IA. ..PETERS.. 04/04/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...DMX...EAX...OAX...TOP...ICT...GID... 38389863 38989893 39839878 40259747 40689557 41339280 40659255 39779279 39319492
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:39 PM CST | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 11 more | 2 hr |
| Apr 3, 9:20 PM CST | Severe Thunderstorm Watch | SPC | Appanoose, Decatur, Monroe, Ringgold, Wayne | 6 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.