Alert archive / Tennessee / Mesoscale Discussions in 2011
Mesoscale Discussion 1724
The Storm Prediction Center issued this mesoscale discussion at Jul 24, 2011, 4:55 PM CDT for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2011, 4:55 PM CDT (21:55 UTC)
- Expired
- Jul 24, 2011, 7:00 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 61 counties
Clay County, AR, Craighead County, AR, Greene County, AR, Mississippi County, AR, Alexander County, IL, Massac County, IL, Pulaski County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Montgomery County, TN, Obion County, TN, Perry County, TN, Stewart County, TN, Tipton County, TN, Weakley County, TN
The radar
The Paducah radar (KPAH), 50 km from the middle of the area, began a volume at 21:56 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
Little Rock, AR (KLZK), launched 12:00Z, 9.9 hours before the alert went out and 222 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
- 2983 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 942 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 80 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 |
|---|---|---|---|---|
| Jul 24, 6:15 AM CDT | Mesoscale Discussion | SPC | DeKalb, DuPage, Kane, Kendall, Lee, Ogle and 1 more | 3 hr |
| Jul 24, 11:21 AM CDT | Mesoscale Discussion | SPC | Christian, Fulton, Logan, Macon, Mason, Menard and 1 more | 114 min |
| Jul 24, 12:42 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Edwards, Hamilton, Jefferson and 8 more | 2 hr |
| Jul 24, 12:42 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Edwards, Hamilton, Jefferson and 8 more | 2 hr |
Nearby
Mesoscale Discussions in Tennessee, 2011Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in Missouri, 2011Every mesoscale discussion in 2011
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.