Alert archive / Iowa / Mesoscale Discussions in 2004

Mesoscale Discussion 2096

August 24, 200416 counties in Iowa; 8 counties in Missouri; 10 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2004, 3:02 AM CDT for 16 counties in Iowa; 8 counties in Missouri; 10 counties in Nebraska. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued: Aug 24, 2004, 3:02 AM CDT (08:02 UTC)
Expired: Aug 24, 2004, 5:00 AM CDT
In force: 118 min
Issued by: the Storm Prediction Center

All 34 counties

Adair County, IA, Adams County, IA, Cass County, IA, Clarke County, IA, Decatur County, IA, Fremont County, IA, Lucas County, IA, Madison County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Wayne County, IA, Andrew County, MO, Atchison County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Mercer County, MO, Nodaway County, MO, Worth County, MO, Cass County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE

The radar

The Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 08:05 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.0 hours before the alert went out and 110 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: 2064 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 820 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Aug 23, 10:18 PM CDT	Mesoscale Discussion	SPC	Bates, Benton, Camden, Cass, Cole, Cooper and 14 more	117 min
Aug 24, 12:08 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Benton, Camden, Cedar, Christian and 35 more	2 hr
Aug 24, 1:13 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Carter, Crawford, Dent, Douglas and 20 more	2 hr
Aug 24, 1:20 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Barton, Bollinger, Cape Girardeau, Christian, Crawford and 34 more	6 hr
Aug 24, 5:26 PM CDT	Mesoscale Discussion	SPC	Andrew, Buchanan, Clay, Clinton, Holt, Platte	3 hr
Aug 23, 7:53 PM CDT	Mesoscale Discussion	SPC	Blaine, Brown, Frontier, Hayes, Hitchcock, Hooker and 5 more	97 min

Nearby

Mesoscale Discussions in Iowa, 2004 Mesoscale Discussions in Nebraska, 2004 Mesoscale Discussions in Missouri, 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.