Alert archive / Georgia / Mesoscale Discussions in 2015
Mesoscale Discussion 206
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2015, 8:45 PM EDT for 24 counties in Georgia. It was in force for 30 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2015, 8:45 PM EDT (00:45 UTC)
- Expired
- Apr 3, 2015, 9:15 PM EDT
- In force
- 30 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 24 counties
Banks County, GA, Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Forsyth County, GA, Gilmer County, GA, Gordon County, GA, Habersham County, GA, Hall County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Rabun County, GA, Stephens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA
The radar
The Atlanta radar (KFFC), 139 km from the middle of the area, began a volume at 00:47 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 00:00Z, 0.8 hours before the alert went out and 138 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
- 2692 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 108 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 |
|---|---|---|---|---|
| Apr 3, 8:48 PM EDT | Severe Thunderstorm Watch | SPC | Bartow, Catoosa, Chattooga, Cherokee, Dade, Dawson and 13 more | 4 hr |
| Apr 3, 10:31 PM EDT | Mesoscale Discussion | SPC | Banks, Barrow, Bartow, Chattooga, Cherokee, Cobb and 27 more | 119 min |
Nearby
Mesoscale Discussions in Georgia, 2015Every mesoscale discussion in 2015
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.