Alert archive / Georgia / Mesoscale Discussions in 2011
Mesoscale Discussion 1285
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2011, 9:03 PM EDT for 26 counties in Georgia; 16 counties in South Carolina. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2011, 9:03 PM EDT (01:03 UTC)
- Expired
- Jun 18, 2011, 10:30 PM EDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 42 counties
Appling County, GA, Ben Hill County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Candler County, GA, Chatham County, GA, Dodge County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Laurens County, GA, Liberty County, GA, Long County, GA, Montgomery County, GA, Screven County, GA, Tattnall County, GA, Telfair County, GA, Toombs County, GA, Treutlen County, GA, Wayne County, GA, Wheeler County, GA, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Georgetown County, SC, Hampton County, SC, Jasper County, SC, Orangeburg County, SC, Sumter County, SC, Williamsburg County, SC
The radar
The Charleston,SC radar (KCLX), 30 km from the middle of the area, began a volume at 01:03 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, 1.1 hours before the alert went out and 126 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
- 1855 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 6:58 PM EDT | Mesoscale Discussion | SPC | Franklin, Habersham, Hart, Rabun, Stephens | 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 Georgia, 2011Mesoscale Discussions in South Carolina, 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.