Alert archive / Missouri / Mesoscale Discussions in 2003

Mesoscale Discussion 746

May 4, 200329 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 4, 2003, 9:05 PM CDT for 29 counties in Missouri. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
May 4, 2003, 9:05 PM CDT (02:05 UTC)
Expired
May 4, 2003, 10:30 PM CDT
In force
85 min
Issued by
the Storm Prediction Center
All 29 counties

Bates County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, Grundy County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Pettis County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Sullivan County, MO

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, 2.1 hours before the alert went out and 159 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 2003-05-05Temperature 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 2003-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.1939587897Sfc1 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
3886 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

183 
ACUS11 KWNS 050206
SWOMCD
SPC MCD 050205 
MOZ000-KSZ000-050330-

MESOSCALE DISCUSSION 0746
NWS STORM PREDICTION CENTER NORMAN OK
0905 PM CDT SUN MAY 04 2003

AREAS AFFECTED...NWRN-NRN MO

CONCERNING...TORNADO WATCH 238...

VALID 050205Z - 050330Z

THUNDERSTORMS WILL CONTINUE TO DEVELOP SWD ALONG A COLD FRONT MOVING
ESEWD THROUGH NWRN/WRN MO AND EAST CENTRAL KS.

01Z SURFACE ANALYSIS SHOWS A STRONG COLD FRONT EXTENDING FROM NWRN
MO INTO EAST CENTRAL KS WITH 6+ MB/3 HR SURFACE PRESSURE RISES IN
THE WAKE OF THE FRONT OVER NERN KS.  AIR MASS REMAINS MODERATELY
UNSTABLE EAST OF THE COLD FRONT WITH DESTABILIZATION SPREADING EWD
INTO CENTRAL MO AS A WARM FRONT LIFTS NEWD THROUGH CENTRAL TO SERN
MO.  WITH DEEP LAYER SHEAR VECTORS ORIENTED NEARLY PARALLEL TO THE
COLD FRONT...CONVECTION WILL CONTINUE TO EVOLVE INTO A SQUALL LINE
THIS EVENING FROM NWRN MO INTO EAST CENTRAL KS.  HAIL/DAMAGING WINDS
WILL BECOME THE PRIMARY THREATS...THOUGH...ISOLATED TORNADOES WILL
BE POSSIBLE WITHIN THE LINE OF STORMS...GIVEN THE DEGREE OF
INSTABILITY AND VERY STRONG DEEP LAYER SHEAR.

..PETERS.. 05/05/2003

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

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

38889480 39569417 40579376 40549282 38229195 38209449

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 7:19 PM CDTMesoscale DiscussionSPCBarry, Barton, Cedar, Christian, Dade, Dallas and 18 more86 min
May 4, 7:34 PM CDTMesoscale DiscussionSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Scott and 2 more116 min
May 4, 8:05 PM CDTMesoscale DiscussionSPCAudrain, Bollinger, Callaway, Cape Girardeau, Clark, Crawford and 27 more85 min
May 4, 9:26 PM CDTMesoscale DiscussionSPCDunklin, Mississippi, New Madrid, Pemiscot, Scott2 hr
May 4, 9:42 PM CDTMesoscale DiscussionSPCBarry, Barton, Camden, Carter, Cedar, Christian and 28 more93 min
May 4, 10:40 PM CDTTornado WatchSPCBollinger, Cape Girardeau, Franklin, Iron, Jefferson, Madison and 5 more5 hr
May 4, 11:05 PM CDTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Cole, Franklin, Gasconade and 17 more5 hr
May 5, 12:50 AM CDTTornado WatchSPCBarry, Carter, Cedar, Christian, Dade, Dallas and 21 more5 hr
May 5, 1:20 AM CDTTornado WatchSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Ripley and 3 more6 hr
May 5, 1:30 AM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Iron, Jefferson, Madison, Perry and 3 more90 min
May 5, 1:46 AM CDTMesoscale DiscussionSPCCity of Saint Louis89 min
May 5, 3:41 AM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Iron, Madison, Mississippi and 8 more34 min
May 5, 3:50 AM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Iron, Jefferson, Madison and 9 more6 hr
May 5, 4:18 AM CDTMesoscale DiscussionSPCButler, Dunklin, Mississippi, New Madrid, Pemiscot, Ripley and 1 more57 min
May 5, 4:55 AM CDTTornado WatchSPCDunklin, Pemiscot6 hr
May 5, 6:32 AM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Madison, Mississippi, New Madrid and 4 more88 min
May 5, 9:19 AM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Madison, Mississippi, Perry and 5 more56 min
May 5, 1:05 PM CDTTornado WatchSPCDunklin3 hr
May 5, 2:35 PM CDTTornado WatchSPCNew Madrid, Pemiscot7 hr
May 5, 3:25 PM CDTTornado WatchSPCDunklin, Pemiscot7 hr
May 5, 5:18 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot117 min

Nearby

Mesoscale 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.