Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

July 13, 2017DeKalb County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 13, 2017, 9:19 PM EDT for DeKalb County, Georgia. It was in force for 26 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 13, 2017, 9:19 PM EDT (01:19 UTC)
Expired: Jul 13, 2017, 9:45 PM EDT
In force: 26 min
Issued by: NWS Atlanta, GA
Wind: 40

County DeKalb County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.3 hours before the alert went out and 49 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: 954 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1642 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: -16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 13, 8:30 PM EDT, 49 minutes earlier.

Area forecast discussion, Jul 13, 8:30 PM EDT, 49 minutes before

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Hazardous weather outlook, Jul 13, 8:05 PM EDT, 1 hour 14 minutes before

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In the hours before

Local storm report, Jul 13, 8:14 PM EDT, 1 hour 5 minutes before

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Special weather statement, Jul 13, 8:24 PM EDT, 55 minutes before

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Special weather statement, Jul 13, 8:26 PM EDT, 53 minutes before

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Special weather statement, Jul 13, 8:30 PM EDT, 49 minutes before

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Special weather statement, Jul 13, 9:16 PM EDT, 3 minutes before

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Special weather statement, Jul 13, 9:19 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 13, 8:24 PM EDT	Special Weather Statement	FFC	Haralson	51 min
Jul 13, 8:26 PM EDT	Special Weather Statement	FFC	DeKalb	49 min
Jul 13, 8:30 PM EDT	Special Weather Statement	FFC	Harris, Muscogee, Troup	45 min
Jul 13, 9:16 PM EDT	Special Weather Statement	FFC	Troup	44 min
Jul 14, 3:19 PM EDT	Special Weather Statement	FFC	Floyd, Polk	26 min
Jul 14, 4:19 PM EDT	Special Weather Statement	FFC	Chattooga, Floyd	26 min
Jul 14, 4:32 PM EDT	Special Weather Statement	FFC	Catoosa, Dade, Walker	28 min
Jul 14, 4:50 PM EDT	Special Weather Statement	FFC	Bartow, Cherokee, Pickens	25 min
Jul 14, 4:58 PM EDT	Special Weather Statement	FFC	Chattooga	32 min
Jul 14, 5:21 PM EDT	Special Weather Statement	FFC	Bartow, Gilmer, Gordon, Pickens	24 min
Jul 14, 5:28 PM EDT	Special Weather Statement	FFC	Stewart, Webster	47 min
Jul 14, 5:34 PM EDT	Special Weather Statement	FFC	Chattooga	26 min
Jul 14, 5:42 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Gordon, Murray	48 min
Jul 14, 5:47 PM EDT	Special Weather Statement	FFC	Troup	43 min
Jul 14, 5:54 PM EDT	Special Weather Statement	FFC	Cherokee, Dawson, Forsyth, Hall, Pickens	36 min
Jul 14, 6:11 PM EDT	Special Weather Statement	FFC	Fannin	34 min
Jul 14, 6:29 PM EDT	Special Weather Statement	FFC	Cherokee, Dawson, Forsyth, Hall, Lumpkin	31 min
Jul 14, 6:32 PM EDT	Special Weather Statement	FFC	Fannin, Gilmer, Gordon, Murray	28 min
Jul 14, 6:41 PM EDT	Special Weather Statement	FFC	Haralson, Paulding, Polk	34 min
Jul 14, 6:55 PM EDT	Flash Flood Warning	FFC	Cherokee, Dawson, Forsyth, Fulton, Lumpkin, Pickens	6 hr
Jul 14, 6:58 PM EDT	Flash Flood Warning	FFC	Gilmer, Murray, Whitfield	6 hr
Jul 14, 7:03 PM EDT	Special Weather Statement	FFC	Banks, DeKalb, Forsyth, Gwinnett, Hall	27 min
Jul 14, 7:15 PM EDT	Special Weather Statement	FFC	Harris	45 min
Jul 14, 7:22 PM EDT	Flash Flood Warning	FFC	Hall	6 hr
Jul 14, 7:23 PM EDT	Special Weather Statement	FFC	Cherokee, Cobb, Paulding	37 min
Jul 14, 7:30 PM EDT	Special Weather Statement	FFC	Fannin, Towns, Union	30 min
Jul 14, 7:33 PM EDT	Special Weather Statement	FFC	Gwinnett, Hall, White	27 min
Jul 14, 7:55 PM EDT	Special Weather Statement	FFC	Towns, Union	35 min

Nearby

Special Weather Statements in Georgia, 2017 Every special weather statement in 2017

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.