Alert archive / South Carolina / Mesoscale Discussions in 2011
Mesoscale Discussion 1302
The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2011, 6:58 PM EDT for 5 counties in Georgia; 26 counties in South Carolina. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2011, 6:58 PM EDT (22:58 UTC)
- Expired
- Jun 19, 2011, 8:00 PM EDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
All 31 counties
Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Abbeville County, SC, Anderson County, SC, Calhoun County, SC, Cherokee County, SC, Chester County, SC, Chesterfield County, SC, Clarendon County, SC, Darlington County, SC, Fairfield County, SC, Florence County, SC, Greenville County, SC, Greenwood County, SC, Kershaw County, SC, Lancaster County, SC, Laurens County, SC, Lee County, SC, Lexington County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Sumter County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 69 km from the middle of the area, began a volume at 23:00 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
Charleston AFB, SC (KCHS), launched 12:00Z, 11.0 hours before the alert went out and 232 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
- 1805 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 955 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
609
ACUS11 KWNS 192258
SWOMCD
SPC MCD 192258
NEZ000-200030-
MESOSCALE DISCUSSION 1303
NWS STORM PREDICTION CENTER NORMAN OK
0558 PM CDT SUN JUN 19 2011
AREAS AFFECTED...PARTS OF CNTRL/SRN NEB
CONCERNING...SEVERE THUNDERSTORM WATCH 513...
VALID 192258Z - 200030Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 513
CONTINUES.
A NEW WW EAST OF WW 513 WILL BE ISSUED SHORTLY.
NEW VIGOROUS CONVECTIVE DEVELOPMENT NOW APPEARS UNDERWAY WITHIN A
ZONE OF ENHANCED LOW/MID-LEVEL WARM ADVECTION DOWNSTREAM OF THE
EVOLVING CLUSTER OF STORMS ACROSS NORTHEAST COLORADO AND THE
SOUTHERN NEBRASKA PANHANDLE. IN THE PRESENCE OF MODERATELY STRONG
SHEAR AND INSTABILITY...A FEW SEVERE STORMS APPEAR LIKELY THROUGH
00-02Z...BEFORE UPSTREAM CLUSTER BEGINS TO ACCELERATE EASTWARD
TOWARD THE REGION.
..KERR.. 06/19/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GID...LBF...GLD...
LAT...LON 41830058 41729941 41439904 41099855 40329911 40280094
40150180 40960176 41830058SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 9:03 PM EDT | Mesoscale Discussion | SPC | Appling, Ben Hill, Bryan, Bulloch, Burke, Candler and 20 more | 87 min |
| Jun 19, 2:22 PM EDT | Severe Thunderstorm Watch | SPC | Catoosa, Dade, Elbert, Fannin, Franklin, Gilmer and 11 more | 5 hr |
| Jun 19, 4:13 PM EDT | Mesoscale Discussion | SPC | Catoosa, Dade, Elbert, Fannin, Franklin, Gilmer and 11 more | 62 min |
| Jun 19, 1:29 PM EDT | Mesoscale Discussion | SPC | Calhoun, Cherokee, Chester, Chesterfield, Clarendon, Darlington and 21 more | 61 min |
Nearby
Mesoscale Discussions in South Carolina, 2011Mesoscale Discussions in Georgia, 2011Every mesoscale discussion in 2011
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.