Alert archive / Indiana / Mesoscale Discussions in 2008

Mesoscale Discussion 1044

May 26, 2008Ford County, Iroquois County, Illinois; 4 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at May 26, 2008, 3:13 AM CDT for Ford County, Iroquois County, Illinois; 4 counties in Indiana. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued: May 26, 2008, 3:13 AM CDT (08:13 UTC)
Expired: May 26, 2008, 4:15 AM CDT
In force: 62 min
Issued by: the Storm Prediction Center

Counties Ford County, IL, Iroquois County, IL, Benton County, IN, Jasper County, IN, Newton County, IN, Porter County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.2 hours before the alert went out and 113 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: 955 J/kg
Mixed-layer CIN: -202 J/kg
Mixed-layer LCL: 941 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 25, 7:54 PM CDT	Tornado Watch	SPC	Boone, Bureau, Carroll, DeKalb, Hancock, Henderson and 13 more	6 hr
May 25, 9:23 PM CDT	Mesoscale Discussion	SPC	Boone, Carroll, DeKalb, Henry, Jo Daviess, Kane and 8 more	67 min
May 25, 9:30 PM CDT	Severe Thunderstorm Watch	SPC	Bond, Calhoun, Clark, Clay, Clinton, Coles and 19 more	4 hr
May 25, 10:18 PM CDT	Mesoscale Discussion	SPC	Alexander, Bond, Clark, Clay, Clinton, Crawford and 30 more	117 min
May 25, 10:59 PM CDT	Mesoscale Discussion	SPC	Brown, Cass, Champaign, Cook, DeWitt, DuPage and 28 more	61 min
May 25, 11:28 PM CDT	Mesoscale Discussion	SPC	Bureau, Carroll, Hancock, Henderson, Henry, Lee and 5 more	62 min
May 25, 11:55 PM CDT	Severe Thunderstorm Watch	SPC	Cook, DuPage, Ford, Fulton, Grundy, Iroquois and 13 more	5 hr

Nearby

Mesoscale Discussions in Indiana, 2008 Mesoscale Discussions in Illinois, 2008 Every mesoscale discussion in 2008

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.