Alert archive / Tennessee / Mesoscale Discussions in 2007
Mesoscale Discussion 710
The Storm Prediction Center issued this mesoscale discussion at May 5, 2007, 4:46 PM CDT for 6 counties in Alabama; 5 counties in Georgia; 10 counties in Tennessee. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- May 5, 2007, 4:46 PM CDT (21:46 UTC)
- Expired
- May 5, 2007, 6:15 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 21 counties
Cherokee County, AL, Cleburne County, AL, DeKalb County, AL, Etowah County, AL, Jackson County, AL, Madison County, AL, Carroll County, GA, Chattooga County, GA, Floyd County, GA, Haralson County, GA, Polk County, GA, Bedford County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Hickman County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Williamson County, TN
The radar
The Northeast Alabama radar (KHTX), 13 km from the middle of the area, began a volume at 21:46 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 12:00Z, 9.8 hours before the alert went out and 151 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
- 9 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 052146 SWOMCD SPC MCD 052146 GAZ000-ALZ000-TNZ000-052315- MESOSCALE DISCUSSION 0710 NWS STORM PREDICTION CENTER NORMAN OK 0446 PM CDT SAT MAY 05 2007 AREAS AFFECTED...MIDDLE TN INTO NORTHEAST AL/NORTHWEST GA CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY VALID 052146Z - 052315Z ISOLATED SOUTH CENTRAL TN SUPERCELL...AND PERHAPS ADDITIONAL DEVELOPMENT...WILL LIKELY CONTINUE TO POSE AN ISOLATED RISK OF MAINLY LARGE HAIL/STRONG WIND GUSTS FROM MIDDLE TN INTO PORTIONS OF NORTHEAST AL/NORTHWEST GA OVER THE NEXT SEVERAL HOURS. A WATCH IS NOT CURRENTLY ANTICIPATED. SUPERCELL IN MOORE/EASTERN LINCOLN COUNTIES TN CONTINUES TO MOVE SOUTHEASTWARD ALONG QUASI-STATIONARY FRONTAL BOUNDARY ARCING FROM MIDDLE TN INTO NORTHEAST AL/WEST CENTRAL GA. A FAIRLY UNSTABLE AIRMASS IS IN PLACE ALONG THE FRONT FROM MIDDLE TN INTO NORTHEAST AL...WITH MLCAPES GENERALLY AROUND 1000 J/KG. SURFACE ADJUSTED WSR-88D VWP DATA FROM HYTOP AL SUPPORTS EFFECTIVE BULK SHEAR OF 35 KTS WITHIN THIS CORRIDOR...FAVORABLE FOR THE DEVELOP/MAINTENENCE OF SUPERCELLS INTO EARLY EVENING. WHILE A FEW SUPERCELL STRUCTURES CAPABLE OF LARGE HAIL/STRONG WIND GUSTS ARE POSSIBLE...ACTIVITY SHOULD WEAKEN SHORTLY AFTER SUNSET. EXPECTED ISOLATED NATURE WILL LIKELY PRECLUDE A WATCH ISSUANCE. ..GUYER.. 05/05/2007 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MRX...FFC...OHX...BMX...HUN... 36358728 34388520 34158498 33538473 33318534 34708669 35818761
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 1:37 PM CDT | Mesoscale Discussion | SPC | Appling, Bacon, Baldwin, Ben Hill, Bibb, Bleckley and 40 more | 113 min |
Nearby
Mesoscale Discussions in Tennessee, 2007Mesoscale Discussions in Alabama, 2007Mesoscale Discussions in Georgia, 2007Every mesoscale discussion in 2007
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.