Alert archive / Missouri / Mesoscale Discussions in 2003

Mesoscale Discussion 1789

July 12, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 12, 2003, 1:53 AM CDT for 4 states. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
Jul 12, 2003, 1:53 AM CDT (06:53 UTC)
Expired
Jul 12, 2003, 3:00 AM CDT
In force
67 min
Issued by
the Storm Prediction Center
All 84 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Izard County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Randolph County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Washington County, AR, Allen County, KS, Anderson County, KS, Bourbon County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Harvey County, KS, Labette County, KS, Linn County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Miami County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Sedgwick County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Camden County, MO, Carter County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Shannon County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Washington County, OK

The radar

The Springfield radar (KSGF), 76 km from the middle of the area, began a volume at 06:57 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, 6.9 hours before the alert went out and 32 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, Springfield, MO at 00:00Z on 2003-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1159 joules per kilogram.LCLEL10008507005003002001001 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, Springfield, MO at 00:00Z on 2003-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 square meters per square second.19395878Sfc1 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
1159 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1763 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
309 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 7:04 PM CDTMesoscale DiscussionSPCBoone, Carroll86 min
Jul 11, 9:16 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Fulton, Izard and 1 more29 min
Jul 11, 9:40 PM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Fulton, Independence and 8 more5 hr
Jul 11, 11:51 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Crawford and 17 more84 min
Jul 12, 3:10 AM CDTSevere Thunderstorm WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 4 more5 hr
Jul 12, 6:33 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Franklin, Johnson and 6 more87 min
Jul 12, 4:26 PM CDTMesoscale DiscussionSPCBenton2 hr
Jul 11, 7:35 PM CDTSevere Thunderstorm WatchSPCCheyenne, Greeley, Logan, Rawlins, Scott, Sherman and 3 more5 hr
Jul 11, 9:52 PM CDTMesoscale DiscussionSPCCheyenne, Greeley, Logan, Scott, Sherman, Thomas and 2 more83 min
Jul 11, 7:34 PM CDTMesoscale DiscussionSPCBeaver, Beckham, Ellis, Greer, Harmon, Jackson and 3 more86 min

Nearby

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