Alert archive / Georgia / Mesoscale Discussions in 2016
Mesoscale Discussion 965
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2016, 3:44 PM EDT for 61 counties in Georgia; 12 counties in South Carolina. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2016, 3:44 PM EDT (19:44 UTC)
- Expired
- Jun 17, 2016, 4:45 PM EDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 73 counties
Appling County, GA, Baldwin County, GA, Ben Hill County, GA, Bibb County, GA, Bleckley County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Butts County, GA, Candler County, GA, Chatham County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Dodge County, GA, Dooly County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Hancock County, GA, Houston County, GA, Jasper County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Liberty County, GA, Long County, GA, Macon County, GA, Marion County, GA, McIntosh County, GA, Meriwether County, GA, Monroe County, GA, Montgomery County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Richmond County, GA, Schley County, GA, Screven County, GA, Spalding County, GA, Sumter County, GA, Talbot County, GA, Tattnall County, GA, Taylor County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Twiggs County, GA, Upson County, GA, Warren County, GA, Washington County, GA, Wayne County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Charleston County, SC, Colleton County, SC, Dorchester County, SC, Georgetown County, SC, Hampton County, SC, Jasper County, SC, Orangeburg County, SC
The radar
The Robins AFB radar (KJGX), 73 km from the middle of the area, began a volume at 19:46 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.7 hours before the alert went out and 199 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
- 1265 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1321 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
067 ACUS11 KWNS 171945 SWOMCD SPC MCD 171944 SCZ000-GAZ000-172045- MESOSCALE DISCUSSION 0965 NWS STORM PREDICTION CENTER NORMAN OK 0244 PM CDT FRI JUN 17 2016 AREAS AFFECTED...W-CNTRL GA EWD INTO SRN AND COASTAL SC CONCERNING...SEVERE THUNDERSTORM WATCH 266... VALID 171944Z - 172045Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 266 CONTINUES. SUMMARY...ISOLATED TO SCATTERED SWATHS OF WIND DAMAGE DUE TO STRONG/SEVERE GUSTS /50-65 MPH/ WILL CONTINUE AS CLUSTERS OF SEVERE MULTICELLS MOVE SEWD INTO THE SC COASTAL AREAS AND CNTRL GA OVER THE NEXT SEVERAL HOURS. ISOLATED SEVERE HAIL MAY ACCOMPANY THE MOST INTENSE UPDRAFTS. DISCUSSION...RADAR MOSAIC SHOWS A BROKEN SQUALL LINE WITH CLUSTERS OF SEVERE MULTICELLS ALIGNED FROM THE I-26 CORRIDOR N OF CHS WWD TO AGS AND W-CNTRL GA. A 51-KT GUST WAS MEASURED BY KMNI IN CNTRL SC AROUND 1915Z AND A 45-KT GUST AT KFFC NEAR ATLANTA. STRONG HEATING WITH TEMPS IN THE 95-100 DEG F RANGE HAVE RESULTED IN VERY STEEP 0-2 KM LAPSE RATES /IN EXCESS OF 9 DEG C PER KM/ DOWNSTREAM OF THE SEWD-MOVING CLUSTERS. THE 18Z CHS RAOB MODIFIED FOR CONDITIONS OVER THE SAVANNAH RIVER VALLEY/COASTAL SC YIELDS AROUND 3500 J/KG MLCAPE. A LAYER OF STRONGER FLOW /H85-H5 30-45 KT/ SAMPLED BY THE 18Z CHS RAOB WILL LIKELY PROVE FAVORABLE FOR SWATHS OF WIND DAMAGE WHERE THE STRONGER WATER-LOADED DOWNDRAFTS PUNCH THE STRONGER MOMENTUM TO THE SURFACE. FARTHER W...STRONG TO LOCALLY SEVERE MULTICELLS WILL CONTINUE SEWD OVER CNTRL GA WHERE TEMP/DEWPOINT SPREADS ARE AROUND 35 DEG F. SLIGHTLY WEAKER FLOW IN THE H85-H5 LAYER WILL TEND TO RESULT IN A MORE ISOLATED WIND-DAMAGE RISK COMPARED TO FARTHER E OVER SERN GA AND COASTAL SC. ..SMITH.. 06/17/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...ILM...CHS...CAE...JAX...FFC...TAE... LAT...LON 31878425 33398517 33518152 33567906 31348122 31878425
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 12:34 PM EDT | Mesoscale Discussion | SPC | Carroll, Chattahoochee, Coweta, Douglas, Fayette, Haralson and 13 more | 116 min |
| Jun 17, 12:59 PM EDT | Mesoscale Discussion | SPC | Appling, Bacon, Baldwin, Barrow, Ben Hill, Bibb and 80 more | 2 hr |
| Jun 17, 1:52 PM EDT | Severe Thunderstorm Watch | SPC | Baldwin, Barrow, Bartow, Bibb, Bleckley, Bryan and 92 more | 8 hr |
| Jun 17, 5:08 PM EDT | Severe Thunderstorm Watch | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 34 more | 6 hr |
| Jun 17, 7:15 PM EDT | Mesoscale Discussion | SPC | Clay, Early, Quitman | 60 min |
| Jun 17, 7:38 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Baker, Ben Hill, Berrien and 32 more | 67 min |
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.