Alert archive / Georgia / Mesoscale Discussions in 2016
Mesoscale Discussion 970
The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2016, 7:38 PM EDT for 5 counties in Florida; 38 counties in Georgia. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2016, 7:38 PM EDT (23:38 UTC)
- Expired
- Jun 17, 2016, 8:45 PM EDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 43 counties
Baker County, FL, Duval County, FL, Hamilton County, FL, Nassau County, FL, Saint Johns County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Dougherty County, GA, Echols County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Mitchell County, GA, Pierce County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Worth County, GA
The radar
The Moody AFB radar (KVAX), 18 km from the middle of the area, began a volume at 23:39 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 12:00Z, 11.6 hours before the alert went out and 116 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
- 2581 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 760 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
125 ACUS11 KWNS 172338 SWOMCD SPC MCD 172338 GAZ000-FLZ000-180045- MESOSCALE DISCUSSION 0970 NWS STORM PREDICTION CENTER NORMAN OK 0638 PM CDT FRI JUN 17 2016 AREAS AFFECTED...SOUTHERN GA AND FAR NORTHEASTERN FL CONCERNING...SEVERE THUNDERSTORM WATCH 266...268... VALID 172338Z - 180045Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 266...268...CONTINUES. SUMMARY...THE GREATEST THREAT FOR STRONG WIND GUSTS WILL FOCUS ACROSS SOUTHEASTERN GA AND FAR NORTHEASTERN FL THIS EVENING. DISCUSSION...WHILE TEMPERATURES HAVE COOLED INTO THE 80S ACROSS SOUTHWESTERN GA IN RESPONSE TO PREVIOUS CONVECTION...A POCKET OF STRONGER HEATING /I.E. TEMPS IN THE 90S/ AND RICH MOISTURE REMAINS OVER SOUTHEASTERN GA AND FAR NORTHEASTERN FL. WHILE THE CONVECTIVE SYSTEM TO THE NORTH IS BECOMING FARTHER DISPLACED FROM STRONGER FLOW ALOFT...INITIATING CELLS ALONG THE OUTFLOW BOUNDARY MAY STILL ATTAIN AT LEAST MARGINALLY SEVERE STRENGTH. STRONG WINDS WILL REMAIN THE MAIN THREAT...PRIMARILY SUPPORTED BY HEAVY PRECIPITATION LOADING AND A VERY BUOYANT LOW-LEVEL AIR MASS. ..PICCA.. 06/17/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...CHS...JAX...FFC...TAE... LAT...LON 29748109 30858425 31348490 31958468 31898089 29748109
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | Escambia, Okaloosa, Santa Rosa | 8 hr |
| Jun 17, 5:08 PM EDT | Severe Thunderstorm Watch | SPC | Baker, Bay, Calhoun, Clay, Duval, Franklin and 12 more | 6 hr |
| Jun 17, 7:15 PM EDT | Mesoscale Discussion | SPC | Calhoun, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more | 60 min |
| 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, 3:44 PM EDT | Mesoscale Discussion | SPC | Appling, Baldwin, Ben Hill, Bibb, Bleckley, Bryan and 55 more | 61 min |
Nearby
Mesoscale Discussions in Georgia, 2016Mesoscale Discussions in Florida, 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.