Alert archive / Tennessee / Mesoscale Discussions in 2003
Mesoscale Discussion 2077
The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2003, 1:43 PM CDT for 6 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2003, 1:43 PM CDT (18:43 UTC)
- Expired
- Aug 4, 2003, 3:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 75 counties
Lauderdale County, AL, Clay County, AR, Craighead County, AR, Greene County, AR, Mississippi County, AR, Alexander County, IL, Massac County, IL, Pulaski County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Todd County, KY, Trigg County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Bedford County, TN, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Perry County, TN, Robertson County, TN, Rutherford County, TN, Shelby County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN, Wilson County, TN
The radar
The Paducah radar (KPAH), 89 km from the middle of the area, began a volume at 18:43 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
Little Rock, AR (KLZK), launched 12:00Z, 6.7 hours before the alert went out and 187 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
- 271 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1681 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 |
|---|---|---|---|---|
| Aug 4, 1:48 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Franklin, Johnson, Logan and 6 more | 2 hr |
| Aug 4, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Clay, Cleburne, Craighead, Crittenden, Cross and 15 more | 6 hr |
| Aug 4, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Boone, Carroll, Conway, Johnson, Madison and 5 more | 6 hr |
| Aug 4, 12:52 PM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Bath, Bourbon, Boyle, Bracken and 44 more | 113 min |
| Aug 4, 5:43 PM CDT | Mesoscale Discussion | SPC | Bath, Bell, Boyd, Breathitt, Carter, Clark and 33 more | 2 hr |
| Aug 4, 6:10 PM CDT | Severe Thunderstorm Watch | SPC | Bell, Harlan, Knott, Leslie, Letcher, Perry and 1 more | 5 hr |
| Aug 4, 5:11 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Camden, Cass, Cedar and 26 more | 94 min |
Nearby
Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Missouri, 2003Every mesoscale discussion in 2003
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.