Alert archive / Indiana / Mesoscale Discussions in 2003

Mesoscale Discussion 1160

May 30, 2003Clark County, Crawford County, Edgar County, Illinois; 55 counties in Indiana; Cass County, Saint Joseph County, Michigan

The Storm Prediction Center issued this mesoscale discussion at May 30, 2003, 9:04 PM CDT for Clark County, Crawford County, Edgar County, Illinois; 55 counties in Indiana; Cass County, Saint Joseph County, Michigan. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 9:04 PM CDT (02:04 UTC)
Expired: May 30, 2003, 10:30 PM CDT
In force: 86 min
Issued by: the Storm Prediction Center

All 60 counties

Clark County, IL, Crawford County, IL, Edgar County, IL, Allen County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Johnson County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Rush County, IN, Saint Joseph County, IN, Shelby County, IN, Starke County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Cass County, MI, Saint Joseph County, MI

The radar

The Indianapolis radar (KIND), 97 km from the middle of the area, began a volume at 02:05 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

Lincoln, IL (KILX), launched 00:00Z, 2.1 hours before the alert went out and 179 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: 142 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 1329 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
May 30, 7:30 PM CDT	Tornado Watch	SPC	Boone, Bureau, Cass, Champaign, Cook, DeKalb and 35 more	6 hr
May 30, 9:10 PM CDT	Tornado Watch	SPC	Clark, Clay, Coles, Crawford, Cumberland, Douglas and 6 more	6 hr
May 30, 11:21 PM CDT	Mesoscale Discussion	SPC	Clark, Clay, Coles, Crawford, Cumberland, Douglas and 6 more	84 min
May 30, 11:50 PM CDT	Severe Thunderstorm Watch	SPC	Bartholomew, Brown, Clark, Dearborn, Decatur, Delaware and 21 more	5 hr
May 31, 1:01 AM CDT	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Dearborn, Decatur, Delaware and 22 more	59 min
May 31, 2:32 AM CDT	Mesoscale Discussion	SPC	Dearborn, Franklin, Jefferson, Ohio, Ripley, Switzerland and 2 more	28 min

Nearby

Mesoscale Discussions in Indiana, 2003 Mesoscale Discussions in Illinois, 2003 Mesoscale Discussions in Michigan, 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.