Alert archive / Alabama / Mesoscale Discussions in 2017
Mesoscale Discussion 284
The Storm Prediction Center issued this mesoscale discussion at Mar 10, 2017, 12:50 AM CST for 4 states. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Mar 10, 2017, 12:50 AM CST (06:50 UTC)
- Expired
- Mar 10, 2017, 2:15 AM CST
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 56 counties
Blount County, AL, Cherokee County, AL, Colbert County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Lamar County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Walker County, AL, Winston County, AL, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Calhoun County, MS, Chickasaw County, MS, Grenada County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Yalobusha County, MS, Bledsoe County, TN, Bradley County, TN, Hamilton County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Polk County, TN, Rhea County, TN, Sequatchie County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 6.8 hours before the alert went out and 160 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2824 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 6:39 PM CST | Mesoscale Discussion | SPC | Fayette, Greene, Lamar, Marion, Pickens, Sumter | 96 min |
| Mar 9, 10:42 PM CST | Mesoscale Discussion | SPC | Blount, Cherokee, Colbert, Cullman, DeKalb, Etowah and 10 more | 63 min |
| Mar 9, 11:18 PM CST | Severe Thunderstorm Watch | SPC | Blount, Cherokee, Colbert, Cullman, DeKalb, Etowah and 10 more | 4 hr |
| Mar 10, 3:09 AM CST | Mesoscale Discussion | SPC | Chambers, Clay, Cleburne, Coosa, Randolph, Shelby and 3 more | 96 min |
| Mar 9, 6:42 PM CST | Severe Thunderstorm Watch | SPC | Benton, Carroll, Chester, Crockett, Decatur, Dyer and 15 more | 5 hr |
| Mar 9, 7:58 PM CST | Mesoscale Discussion | SPC | Bedford, Cannon, Cheatham, Coffee, Davidson, Dickson and 23 more | 92 min |
| Mar 9, 8:38 PM CST | Severe Thunderstorm Watch | SPC | Bedford, Cannon, Cheatham, Coffee, Davidson, DeKalb and 24 more | 4 hr |
| Mar 9, 9:30 PM CST | Mesoscale Discussion | SPC | Benton, Carroll, Chester, Crockett, Dyer, Gibson and 10 more | 90 min |
Nearby
Mesoscale Discussions in Alabama, 2017Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in Mississippi, 2017Every mesoscale discussion in 2017
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.