Alert archive / Indiana / Mesoscale Discussions in 2004
Mesoscale Discussion 149
The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2004, 1:30 PM CST for 14 counties in Illinois; 20 counties in Indiana; Kenosha County, Walworth County, Wisconsin. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2004, 1:30 PM CST (19:30 UTC)
- Expired
- Mar 1, 2004, 2:30 PM CST
- In force
- 60 min
- Issued by
- the Storm Prediction Center
All 36 counties
Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, Livingston County, IL, McHenry County, IL, Will County, IL, Benton County, IN, Carroll County, IN, Cass County, IN, Fulton County, IN, Howard County, IN, Jasper County, IN, Kosciusko County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Wabash County, IN, White County, IN, Whitley County, IN, Kenosha County, WI, Walworth County, WI
The radar
The Chicago radar (KLOT), 39 km from the middle of the area, began a volume at 19:30 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 12:00Z, 7.5 hours before the alert went out and 197 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 498 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 260 m²/s²
- 0-3 km storm-relative helicity
- 280 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 10:06 AM CST | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Carroll, Cass, Fulton and 22 more | 84 min |
| Mar 1, 11:30 AM CST | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 32 more | 6 hr |
| Mar 1, 3:45 PM CST | Severe Thunderstorm Watch | SPC | Adams, Allen, Cass, DeKalb, Elkhart, Fulton and 19 more | 4 hr |
| Mar 1, 4:56 PM CST | Mesoscale Discussion | SPC | Elkhart, Kosciusko, LaGrange, LaPorte, Marshall, Noble and 3 more | 2 hr |
Nearby
Mesoscale Discussions in Indiana, 2004Mesoscale Discussions in Illinois, 2004Mesoscale Discussions in Wisconsin, 2004Every 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.