Alert archive / Georgia / Special Weather Statements in 2015

Special Weather Statement, NWS Atlanta, GA

July 20, 2015Cobb County, Fulton County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 20, 2015, 8:44 PM EDT for Cobb County, Fulton County, Georgia. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 20, 2015, 8:44 PM EDT (00:44 UTC)
Expired: Jul 20, 2015, 9:15 PM EDT
In force: 31 min
Issued by: NWS Atlanta, GA

Counties Cobb County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 53 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.7 hours before the alert went out and 320 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1631 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1303 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this special weather statement went out at Jul 20, 7:45 PM EDT, 59 minutes earlier.

Area forecast discussion, Jul 20, 7:45 PM EDT, 59 minutes before

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Hazardous weather outlook, Jul 20, 7:07 PM EDT, 1 hour 37 minutes before

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In the hours before

Special weather statement, Jul 20, 6:56 PM EDT, 1 hour 48 minutes before

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Special weather statement, Jul 20, 6:58 PM EDT, 1 hour 46 minutes before

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Special weather statement, Jul 20, 7:52 PM EDT, 52 minutes before

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Special weather statement, Jul 20, 8:06 PM EDT, 38 minutes before

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Special weather statement, Jul 20, 8:15 PM EDT, 29 minutes before

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Special weather statement, Jul 20, 8:44 PM EDT, 0 minutes before

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The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 8:06 PM EDT	Special Weather Statement	FFC	Polk	24 min
Jul 20, 8:15 PM EDT	Special Weather Statement	FFC	Cobb	30 min
Jul 20, 9:14 PM EDT	Special Weather Statement	FFC	DeKalb	31 min
Jul 21, 3:53 AM EDT	Heat Advisory	FFC	Baldwin, Bibb, Bleckley, Chattahoochee, Crawford, Crisp and 40 more	15 hr
Jul 21, 12:50 PM EDT	Special Weather Statement	FFC	Bleckley, Houston	40 min
Jul 21, 1:09 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Laurens	51 min
Jul 21, 1:19 PM EDT	Special Weather Statement	FFC	Bleckley, Dooly, Pulaski	41 min
Jul 21, 1:45 PM EDT	Special Weather Statement	FFC	Crisp, Dodge, Wilcox	45 min
Jul 21, 1:54 PM EDT	Special Weather Statement	FFC	Laurens, Treutlen	36 min
Jul 21, 2:25 PM EDT	Special Weather Statement	FFC	Crisp, Dodge, Treutlen, Wheeler, Wilcox	65 min
Jul 21, 2:28 PM EDT	Special Weather Statement	FFC	Paulding, Polk	47 min
Jul 21, 2:31 PM EDT	Special Weather Statement	FFC	Stewart, Webster	44 min
Jul 21, 2:50 PM EDT	Special Weather Statement	FFC	Fannin	40 min
Jul 21, 2:59 PM EDT	Special Weather Statement	FFC	Cobb, Douglas, Fulton	46 min
Jul 21, 3:10 PM EDT	Special Weather Statement	FFC	Montgomery, Telfair, Toombs	50 min
Jul 21, 3:13 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Douglas, Fulton, Paulding	27 min
Jul 21, 3:24 PM EDT	Special Weather Statement	FFC	Fannin	51 min
Jul 21, 3:28 PM EDT	Special Weather Statement	FFC	DeKalb	32 min
Jul 21, 3:43 PM EDT	Special Weather Statement	FFC	DeKalb, Fulton	32 min
Jul 21, 3:52 PM EDT	Special Weather Statement	FFC	Walker, Whitfield	23 min
Jul 21, 3:56 PM EDT	Special Weather Statement	FFC	Towns, Union	34 min
Jul 21, 4:04 PM EDT	Special Weather Statement	FFC	Clayton, DeKalb	26 min
Jul 21, 4:08 PM EDT	Special Weather Statement	FFC	Chattooga, Gilmer, Gordon, Murray, Pickens, Walker and 1 more	52 min
Jul 21, 4:22 PM EDT	Special Weather Statement	FFC	Lumpkin, White	38 min
Jul 21, 4:25 PM EDT	Special Weather Statement	FFC	Butts, Henry, Newton, Rockdale, Spalding	50 min
Jul 21, 4:46 PM EDT	Special Weather Statement	FFC	Morgan	44 min
Jul 21, 4:51 PM EDT	Special Weather Statement	FFC	Cherokee	39 min
Jul 21, 4:54 PM EDT	Special Weather Statement	FFC	Dawson, Gilmer, Pickens	51 min
Jul 21, 5:27 PM EDT	Special Weather Statement	FFC	Bartow, Cherokee	48 min
Jul 21, 5:31 PM EDT	Special Weather Statement	FFC	Forsyth, Hall, Lumpkin	44 min
Jul 21, 6:07 PM EDT	Special Weather Statement	FFC	Barrow, Forsyth, Gwinnett	38 min
Jul 21, 6:44 PM EDT	Special Weather Statement	FFC	Clarke, Jackson, Oconee, Oglethorpe	46 min
Jul 21, 7:22 PM EDT	Special Weather Statement	FFC	Oglethorpe	38 min

Nearby

Special Weather Statements in Georgia, 2015 Every special weather statement 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.