Alert archive / Georgia / Mesoscale Discussions in 2008
Mesoscale Discussion 430
The Storm Prediction Center issued this mesoscale discussion at Mar 15, 2008, 11:47 PM EDT for 21 counties in Georgia. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- Mar 15, 2008, 11:47 PM EDT (03:47 UTC)
- Expired
- Mar 16, 2008, 12:45 AM EDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 21 counties
Appling County, GA, Bleckley County, GA, Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Dodge County, GA, Effingham County, GA, Evans County, GA, Jeff Davis County, GA, Laurens County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Montgomery County, GA, Pulaski County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Wheeler County, GA
The radar
The Charleston,SC radar (KCLX), 127 km from the middle of the area, began a volume at 03:47 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
Jacksonville, FL (KJAX), launched 00:00Z, 3.8 hours before the alert went out and 172 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
- 1299 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 938 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 427 m²/s²
- Significant tornado parameter
- 2.9
- Supercell composite
- 10.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 160347 SWOMCD SPC MCD 160347 SCZ000-GAZ000-160445- MESOSCALE DISCUSSION 0430 NWS STORM PREDICTION CENTER NORMAN OK 1047 PM CDT SAT MAR 15 2008 AREAS AFFECTED...PARTS OF CENTRAL/ERN GA AND FAR SRN SC CONCERNING...TORNADO WATCH 120... VALID 160347Z - 160445Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 120 CONTINUES. LOCAL EXTENSION OF WW 120 MAY BE NEEDED FOR PART OF ERN GA...TO THE EAST OF VDI...AS LINE OF STRONG TO SEVERE TSTMS SHIFTS SLOWLY SEWD. REGIONAL RADARS SHOWED A LINE OF TSTMS EXTENDING FROM LAURENS COUNTY GA TO FAR SRN SC...WITH THIS LINE CONTINUING TO TRANSLATE SLOWLY TO THE SE. INDIVIDUAL STORMS WITHIN THIS LINE ARE TRACKING TO THE ESE AT 45 KT...WITH A COUPLE CONTINUING TO SHOW PERSISTENT ROTATIONAL COUPLETS. LOW LEVEL CONVERGENCE ALONG BOUNDARY ATTENDANT TO THIS ACTIVITY WILL MAINTAIN POTENTIAL FOR ADDITIONAL SURFACE BASED TSTMS WITHIN MOIST/MODERATELY UNSTABLE AIR MASS. EFFECTIVE BULK SHEAR AROUND 50 KT SUPPORTS ORGANIZED ROTATING UPDRAFTS WITH LOW LCLS PROMOTING THREAT FOR ADDITIONAL TORNADOES PRIOR TO WRN MOST ACTIVITY MOVING OFFSHORE BY 06Z. ..PETERS.. 03/16/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...CHS...JAX...FFC... 32068339 32208393 32468331 32568251 32398107 32297994 31768042 31278095 31398160 31708220 31888313
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 9:49 PM EDT | Mesoscale Discussion | SPC | Bleckley, Bryan, Bulloch, Candler, Chatham, Dodge and 21 more | 56 min |
Nearby
Mesoscale Discussions in Georgia, 2008Every mesoscale discussion in 2008
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.