Alert archive / Missouri / Mesoscale Discussions in 2004

Mesoscale Discussion 172

March 4, 20049 counties in Arkansas; 38 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Mar 4, 2004, 5:32 PM CST for 9 counties in Arkansas; 38 counties in Missouri. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Mar 4, 2004, 5:32 PM CST (23:32 UTC)
Expired: Mar 4, 2004, 7:30 PM CST
In force: 118 min
Issued by: the Storm Prediction Center

All 47 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Washington County, AR, Barry County, MO, Camden County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Madison County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Newton County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Saint Francois County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 83 km from the middle of the area, began a volume at 23:34 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.

Tornado Watch 26Mar 4, 6:15 PM CST

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.5 hours before the alert went out and 127 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 546 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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.

Issued	Product	Office	Counties	Lasted
Mar 4, 9:28 AM CST	Mesoscale Discussion	SPC	Crawford, Sebastian, Washington	62 min
Mar 4, 1:25 PM CST	Mesoscale Discussion	SPC	Benton, Carroll, Crawford, Franklin, Johnson, Logan and 7 more	65 min
Mar 4, 2:05 PM CST	Tornado Watch	SPC	Benton, Boone, Carroll, Crawford, Franklin, Madison and 3 more	6 hr
Mar 4, 2:18 PM CST	Mesoscale Discussion	SPC	Clark, Columbia, Garland, Hempstead, Hot Spring, Howard and 11 more	57 min
Mar 4, 3:00 PM CST	Tornado Watch	SPC	Clark, Columbia, Garland, Hempstead, Hot Spring, Howard and 14 more	6 hr
Mar 4, 4:41 PM CST	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Dallas, Garland, Grant and 16 more	2 hr

Nearby

Mesoscale Discussions in Missouri, 2004 Mesoscale Discussions in Arkansas, 2004 Every mesoscale discussion in 2004

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.