Alert archive / Indiana / Mesoscale Discussions in 2003

Mesoscale Discussion 344

March 28, 2003Clark County, Edgar County, Vermilion County, Illinois; 47 counties in Indiana; 7 counties in Michigan

The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2003, 7:35 AM CST for Clark County, Edgar County, Vermilion County, Illinois; 47 counties in Indiana; 7 counties in Michigan. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Mar 28, 2003, 7:35 AM CST (13:35 UTC)
Expired
Mar 28, 2003, 10:30 AM CST
In force
3 hr
Issued by
the Storm Prediction Center
All 57 counties

Clark County, IL, Edgar County, IL, Vermilion County, IL, Allen County, IN, Benton County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, DeKalb County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hendricks County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Johnson County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Saint Joseph County, IN, Starke County, IN, Steuben 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, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Hillsdale County, MI, Kalamazoo County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 57 km from the middle of the area, began a volume at 13:34 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 nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 1.6 hours before the alert went out and 297 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, Detroit, MI at 12:00Z on 2003-03-28Temperature 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, Detroit, MI at 12:00Z on 2003-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 416 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1115 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
416 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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
Mar 28, 10:22 AM CSTMesoscale DiscussionSPCClark, Crawford, Cumberland, Edgar, Edwards, Gallatin and 13 more113 min
Mar 28, 1:20 PM CSTSevere Thunderstorm WatchSPCHardin, Wabash6 hr
Mar 28, 3:30 PM CSTMesoscale DiscussionSPCHardin, Wabash2 hr
Mar 28, 5:27 PM CSTMesoscale DiscussionSPCGallatin, Hardin, Wabash93 min
Mar 28, 12:20 PM CSTSevere Thunderstorm WatchSPCAdams, Allen, Carroll, Cass, DeKalb, Elkhart and 15 more6 hr
Mar 28, 2:57 PM CSTMesoscale DiscussionSPCAdams, Allen, Cass, DeKalb, Elkhart, Fulton and 9 more2 hr
Mar 28, 11:54 AM CSTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Clare and 30 more2 hr
Mar 28, 4:58 PM CSTMesoscale DiscussionSPCArenac, Bay, Calhoun, Clinton, Eaton, Genesee and 21 more92 min
Mar 28, 5:00 PM CSTSevere Thunderstorm WatchSPCGenesee, Huron, Lapeer, Lenawee, Livingston, Macomb and 7 more4 hr

Nearby

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