Alert archive / Kentucky / Mesoscale Discussions in 2009
Mesoscale Discussion 324
The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2009, 9:42 PM CDT for 5 states. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Mar 28, 2009, 9:42 PM CDT (02:42 UTC)
- Expired
- Mar 28, 2009, 10:45 PM CDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 78 counties
Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, DeKalb County, AL, Randolph County, AL, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Douglas County, GA, Floyd County, GA, Gordon County, GA, Haralson County, GA, Heard County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Clark County, IN, Scott County, IN, Adair County, KY, Anderson County, KY, Boyle County, KY, Bullitt County, KY, Carroll County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Green County, KY, Henry County, KY, Jefferson County, KY, Jessamine County, KY, Lincoln County, KY, Marion County, KY, McCreary County, KY, Mercer County, KY, Nelson County, KY, Oldham County, KY, Owen County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Washington County, KY, Wayne County, KY, Woodford County, KY, Bledsoe County, TN, Bradley County, TN, Clay County, TN, Cumberland County, TN, Fentress County, TN, Hamilton County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Van Buren County, TN, White County, TN
The radar
The Northeast Alabama radar (KHTX), 112 km from the middle of the area, began a volume at 02:41 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
Nashville Metro, TN (KBNA), launched 00:00Z, 2.7 hours before the alert went out and 154 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
- 471 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1203 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 315 m²/s²
- 0-3 km storm-relative helicity
- 366 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.1
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 |
|---|---|---|---|---|
| Mar 28, 7:21 PM CDT | Mesoscale Discussion | SPC | DeKalb, Jackson, Madison | 54 min |
| Mar 28, 7:29 PM CDT | Tornado Watch | SPC | Calhoun, Cherokee, Clay, Cleburne, Etowah, Randolph and 2 more | 4 hr |
| Mar 28, 11:48 PM CDT | Mesoscale Discussion | SPC | Brantley, Bryan, Bulloch, Camden, Charlton, Chatham and 10 more | 87 min |
Nearby
Mesoscale Discussions in Kentucky, 2009Mesoscale Discussions in Tennessee, 2009Mesoscale Discussions in Georgia, 2009Every mesoscale discussion in 2009
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.