Alert archive / Georgia / Special Weather Statements in 2015

Special Weather Statement, NWS Atlanta, GA

July 20, 2015Cobb County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 20, 2015, 7:52 PM EDT for Cobb County, Georgia. It was in force for 23 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, 7:52 PM EDT (23:52 UTC)
Expired: Jul 20, 2015, 8:15 PM EDT
In force: 23 min
Issued by: NWS Atlanta, GA

County Cobb County, GA

The radar

The Atlanta radar (KFFC), 81 km from the middle of the area, began a volume at 23:53 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.9 hours before the alert went out and 82 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: 1070 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1047 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, 7 minutes earlier.

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

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Hazardous weather outlook, Jul 20, 7:07 PM EDT, 45 minutes before

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In the hours before

Special weather statement, Jul 20, 6:31 PM EDT, 1 hour 21 minutes before

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Special weather statement, Jul 20, 6:34 PM EDT, 1 hour 18 minutes before

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Special weather statement, Jul 20, 6:34 PM EDT, 1 hour 18 minutes before

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

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Special weather statement, Jul 20, 6:58 PM EDT, 54 minutes before

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Special weather statement, Jul 20, 7:52 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, 1:02 PM EDT	Special Weather Statement	FFC	Macon, Schley	43 min
Jul 20, 1:32 PM EDT	Special Weather Statement	FFC	Wilkinson	43 min
Jul 20, 1:39 PM EDT	Special Weather Statement	FFC	Sumter	36 min
Jul 20, 1:44 PM EDT	Special Weather Statement	FFC	Laurens	46 min
Jul 20, 1:52 PM EDT	Severe Thunderstorm Warning	FFC	Wilkinson	38 min
Jul 20, 2:13 PM EDT	Special Weather Statement	FFC	Dooly, Sumter	47 min
Jul 20, 2:18 PM EDT	Special Weather Statement	FFC	Houston	27 min
Jul 20, 2:25 PM EDT	Special Weather Statement	FFC	Wilkinson	50 min
Jul 20, 2:54 PM EDT	Special Weather Statement	FFC	Crisp	36 min
Jul 20, 3:07 PM EDT	Special Weather Statement	FFC	Laurens, Treutlen	23 min
Jul 20, 3:25 PM EDT	Special Weather Statement	FFC	Laurens	35 min
Jul 20, 3:32 PM EDT	Special Weather Statement	FFC	Bleckley	43 min
Jul 20, 3:36 PM EDT	Special Weather Statement	FFC	Murray	24 min
Jul 20, 3:54 PM EDT	Special Weather Statement	FFC	Wheeler	51 min
Jul 20, 4:00 PM EDT	Special Weather Statement	FFC	Murray	30 min
Jul 20, 4:08 PM EDT	Special Weather Statement	FFC	Bleckley, Dodge	37 min
Jul 20, 4:15 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge	45 min
Jul 20, 4:21 PM EDT	Special Weather Statement	FFC	Bartow	24 min
Jul 20, 4:44 PM EDT	Special Weather Statement	FFC	Dade, Walker	31 min
Jul 20, 4:48 PM EDT	Special Weather Statement	FFC	Cherokee	27 min
Jul 20, 5:15 PM EDT	Special Weather Statement	FFC	Bibb	45 min
Jul 20, 5:42 PM EDT	Special Weather Statement	FFC	Catoosa, Whitfield	33 min
Jul 20, 6:05 PM EDT	Special Weather Statement	FFC	Murray	25 min
Jul 20, 6:29 PM EDT	Special Weather Statement	FFC	Murray	31 min
Jul 20, 6:31 PM EDT	Special Weather Statement	FFC	Floyd	29 min
Jul 20, 6:34 PM EDT	Special Weather Statement	FFC	Glascock	41 min
Jul 20, 6:56 PM EDT	Special Weather Statement	FFC	Telfair	34 min
Jul 20, 6:58 PM EDT	Special Weather Statement	FFC	Paulding	32 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.