Alert archive / Alabama / Mesoscale Discussions in 2010
Mesoscale Discussion 992
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2010, 4:39 PM CDT for 4 states. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2010, 4:39 PM CDT (21:39 UTC)
- Expired
- Jun 17, 2010, 5:45 PM CDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 47 counties
Blount County, AL, Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Colbert County, AL, Cullman County, AL, Etowah County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Randolph County, AL, St. Clair County, AL, Talladega County, AL, Winston County, AL, Bartow County, GA, Carroll County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, DeKalb County, GA, Douglas County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gwinnett County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Tishomingo County, MS, Chester County, TN, Decatur County, TN, Giles County, TN, Hardin County, TN, Lawrence County, TN, Lewis County, TN, Perry County, TN, Wayne County, TN
The radar
The Northeast Alabama radar (KHTX), 66 km from the middle of the area, began a volume at 21:41 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
Birmingham, AL (KBMX), launched 12:00Z, 9.7 hours before the alert went out and 141 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
- 1454 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 956 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 26 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 |
|---|---|---|---|---|
| Jun 17, 9:37 AM CDT | Mesoscale Discussion | SPC | Bedford, Benton, Bledsoe, Cannon, Carroll, Cheatham and 40 more | 113 min |
| Jun 17, 11:25 AM CDT | Severe Thunderstorm Watch | SPC | Bedford, Benton, Bledsoe, Bradley, Cannon, Carroll and 42 more | 8 hr |
| Jun 17, 2:53 PM CDT | Mesoscale Discussion | SPC | Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 31 more | 2 hr |
Nearby
Mesoscale Discussions in Alabama, 2010Mesoscale Discussions in Georgia, 2010Mesoscale Discussions in Tennessee, 2010Every mesoscale discussion in 2010
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.