Alert archive / Missouri / Mesoscale Discussions in 2003

Mesoscale Discussion 650

April 30, 20034 counties in Kansas; 25 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2003, 9:22 PM CDT for 4 counties in Kansas; 25 counties in Missouri. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Apr 30, 2003, 9:22 PM CDT (02:22 UTC)
Expired: Apr 30, 2003, 10:45 PM CDT
In force: 83 min
Issued by: the Storm Prediction Center

All 29 counties

Bourbon County, KS, Crawford County, KS, Linn County, KS, Miami County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Pettis County, MO, Polk County, MO, St. Clair County, MO, Vernon County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 94 km from the middle of the area, began a volume at 02:21 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

Springfield, MO (KSGF), launched 00:00Z, 2.4 hours before the alert went out and 119 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1639 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1716 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

017 
ACUS11 KWNS 010222
SWOMCD
SPC MCD 010222 
MOZ000-KSZ000-010345-

MESOSCALE DISCUSSION 0650
NWS STORM PREDICTION CENTER NORMAN OK
0922 PM CDT WED APR 30 2003

AREAS AFFECTED...FAR SERN KS/WRN MO

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 010222Z - 010345Z

A NEW SEVERE TSTM WATCH WILL BE REQUIRED SHORTLY ACROSS FAR SERN KS
INTO W-CNTRL AND SWRN MO.

LATEST MESOANALYSIS SHOWS SURFACE LOW OVER N-CNTRL MO NEAR P35 WITH
A TRAILING COLD FRONT THAT EXTENDS SWWD TO NEAR THE MKC METRO AREA
AND THEN TO JUST S OF ICT. REGIONAL RADAR DATA SHOW TSTMS INCREASING
IN COVERAGE AND INTENSITY ACROSS ERN KS FROM AROUND JOHNSON COUNTY
SWWD INTO WOODSON COUNTY.

THE AIRMASS ACROSS THE WARM SECTOR OVER FAR ERN KS INTO MO REMAINS
MODERATELY UNSTABLE WITH MLCAPES OF 1000-2000 J/KG. LATEST
SHORT-RANGE MODEL GUIDANCE SUGGESTS THAT LLJ CURRENTLY DEVELOPING
FROM NERN OK INTO NRN MO/WRN IL WILL CONTINUE TO STRENGTHEN THROUGH
01/06Z AS IT SLOWLY VEERS TO MORE OF A SWLY DIRECTION. ENHANCED
WARM/MOIST ADVECTION ALONG THIS FEATURE WILL CONTINUE TO SUPPORT
STRONG/SEVERE TSTMS ALONG THE COLD FRONT AS IT MOVES SEWD THROUGH
THE AREA. LARGE HAIL/DAMAGING WINDS WILL BE THE PRIMARY THREATS.


..MEAD.. 05/01/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LSX...SGF...EAX...

37829506 38059504 38439499 38689474 38869420 38969354
39009294 38939243 38009229 37329233 37099265 36919361
37009409 37209481 37419503

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Atchison, Butler, Chase, Chautauqua and 23 more	6 hr
Apr 30, 7:31 PM CDT	Mesoscale Discussion	SPC	Doniphan, Johnson, Leavenworth, Wyandotte	119 min
Apr 30, 9:30 PM CDT	Severe Thunderstorm Watch	SPC	Bourbon, Cherokee, Crawford, Johnson, Leavenworth, Linn and 2 more	6 hr
Apr 30, 9:52 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Butler, Chase, Chautauqua and 23 more	83 min
Apr 30, 10:31 PM CDT	Mesoscale Discussion	SPC	Doniphan, Johnson, Leavenworth, Wyandotte	89 min
Apr 30, 11:47 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Butler, Chase, Chautauqua, Coffey and 13 more	118 min
May 1, 12:00 AM CDT	Mesoscale Discussion	SPC	Bourbon, Cherokee, Crawford, Johnson, Leavenworth, Linn and 2 more	90 min
May 1, 12:10 AM CDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 22 more	5 hr
May 1, 2:27 AM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 10 more	2 hr
May 1, 12:58 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Rawlins, Sherman, Wallace	2 hr
Apr 30, 10:55 PM CDT	Severe Thunderstorm Watch	SPC	Audrain, Boone, Knox, Lewis, Marion, Monroe and 4 more	5 hr
May 1, 1:19 AM CDT	Mesoscale Discussion	SPC	Audrain, Boone, Marion, Monroe, Pike, Ralls and 1 more	86 min
May 1, 7:51 AM CDT	Mesoscale Discussion	SPC	Butler, Cape Girardeau, Carter, Mississippi, New Madrid, Oregon and 4 more	114 min
May 1, 9:35 AM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 6 more	5 hr

Nearby

Mesoscale Discussions in Missouri, 2003 Mesoscale Discussions in Kansas, 2003 Every 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.