Alert archive / Georgia / Mesoscale Discussions in 2016
Mesoscale Discussion 170
The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2016, 11:40 PM EST for 19 counties in Georgia; 14 counties in South Carolina. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2016, 11:40 PM EST (04:40 UTC)
- Expired
- Mar 2, 2016, 12:45 AM EST
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 33 counties
Bleckley County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Dodge County, GA, Dooly County, GA, Emanuel County, GA, Houston County, GA, Jenkins County, GA, Johnson County, GA, Laurens County, GA, Montgomery County, GA, Pulaski County, GA, Screven County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Wheeler County, GA, Wilcox County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Clarendon County, SC, Darlington County, SC, Hampton County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 76 km from the middle of the area, began a volume at 04:41 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
Charleston AFB, SC (KCHS), launched 00:00Z, 4.7 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1704 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
814
ACUS11 KWNS 020441
SWOMCD
SPC MCD 020440
SCZ000-GAZ000-020545-
MESOSCALE DISCUSSION 0170
NWS STORM PREDICTION CENTER NORMAN OK
1040 PM CST TUE MAR 01 2016
AREAS AFFECTED...SC MIDLANDS...SRN GA
CONCERNING...SEVERE THUNDERSTORM WATCH 34...
VALID 020440Z - 020545Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 34
CONTINUES.
SUMMARY...A QLCS FROM THE SC MIDLANDS THROUGH CNTRL/SRN GA SHOULD
CONTINUE AN OVERALL DECAY DURING THE NEXT FEW HOURS. AN ADDITIONAL
WW ISSUANCE IS UNLIKELY.
DISCUSSION...LEADING EDGE OF A QLCS IS APPROACHING THE COLUMBIA SC
AREA AND EXTENDS SWWD THROUGH THE HEART OF GA...WHERE IT BECOMES
INCREASINGLY ILL-DEFINED. THE LEADING/NERN EXTENT OF THIS LINE
CONTINUES TO OUTPACE SURFACE MOISTURE RETURN...LIKELY RESULTING IN
SLIGHTLY ELEVATED CONVECTION ATOP A COMPARATIVELY DRY BOUNDARY LAYER
CHARACTERIZED BY SURFACE DEW POINT DEPRESSIONS AROUND 15 DEG F.
OVERALL RADAR/SATELLITE/LIGHTNING TRENDS INDICATE SUBSTANTIAL
WEAKENING OF THE LINE DURING THE PAST HALF HOUR. THIS TREND IS
LIKELY IRREVERSIBLE GIVEN THE DEARTH OF AVAILABLE BUOYANCY AND AS
SUCH THE RISK FOR DAMAGING WIND GUSTS SHOULD FURTHER WANE OVERNIGHT.
..GRAMS.. 03/02/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ILM...CHS...CAE...FFC...
LAT...LON 34228126 34408073 34478033 34408000 34247988 33987986
33598007 32458148 31898288 31918351 32048416 32378402
32988241 34228126SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 8:08 PM EST | Mesoscale Discussion | SPC | Baldwin, Barrow, Bibb, Butts, Clarke, Clayton and 35 more | 67 min |
| Mar 1, 9:42 PM EST | Mesoscale Discussion | SPC | Baldwin, Bibb, Bleckley, Burke, Chattahoochee, Columbia and 39 more | 63 min |
| Mar 1, 10:09 PM EST | Severe Thunderstorm Watch | SPC | Baldwin, Bibb, Bleckley, Burke, Chattahoochee, Columbia and 30 more | 4 hr |
Nearby
Mesoscale Discussions in Georgia, 2016Mesoscale Discussions in South Carolina, 2016Every mesoscale discussion in 2016
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.