Alert archive / Missouri / Mesoscale Discussions in 2005
Mesoscale Discussion 957
The Storm Prediction Center issued this mesoscale discussion at May 21, 2005, 8:28 PM CDT for 22 counties in Iowa; 31 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 21, 2005, 8:28 PM CDT (01:28 UTC)
- Expired
- May 21, 2005, 10:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 53 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Cass County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Jefferson County, IA, Lee County, IA, Lucas County, IA, Madison County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Adair County, MO, Andrew County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clark County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Monroe County, MO, Nodaway County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO
The radar
The Pleasant Hill radar (KEAX), 166 km from the middle of the area, began a volume at 01:27 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
Topeka, KS (KTOP), launched 00:00Z, 1.5 hours before the alert went out and 231 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
- 1681 J/kg
- Mixed-layer CIN
- -207 J/kg
- Mixed-layer LCL
- 1503 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 344 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
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 |
|---|---|---|---|---|
| May 21, 7:26 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Crawford, Fremont, Harrison and 10 more | 94 min |
| May 22, 12:56 AM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Decatur, Lucas, Madison and 6 more | 64 min |
| May 22, 2:13 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Cedar, Christian, Dade, Dallas and 14 more | 2 hr |
Nearby
Mesoscale Discussions in Missouri, 2005Mesoscale Discussions in Iowa, 2005Every mesoscale discussion in 2005
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.