Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

August 10, 2017Harris County, Heard County, Troup County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 10, 2017, 7:32 PM EDT for Harris County, Heard County, Troup County, Georgia. It was in force for 28 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: Aug 10, 2017, 7:32 PM EDT (23:32 UTC)
Expired: Aug 10, 2017, 8:00 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA
Wind: 40

Counties Harris County, GA, Heard County, GA, Troup County, GA

The radar

The Atlanta radar (KFFC), 53 km from the middle of the area, began a volume at 23:33 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, 11.5 hours before the alert went out and 58 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: 620 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 495 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 Aug 10, 7:00 PM EDT, 32 minutes earlier.

Area forecast discussion, Aug 10, 7:00 PM EDT, 32 minutes before

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Hazardous weather outlook, Aug 10, 4:00 AM EDT, 15 hours 32 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
400 AM EDT Thu Aug 10 2017

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-111000-
Baldwin-Banks-Barrow-Bartow-Bibb-Bleckley-Butts-Carroll-Catoosa-
Chattahoochee-Chattooga-Cherokee-Clarke-Clayton-Cobb-Coweta-
Crawford-Crisp-Dade-Dawson-DeKalb-Dodge-Dooly-Douglas-Emanuel-
Fannin-Fayette-Floyd-Forsyth-Gilmer-Glascock-Gordon-Greene-
Gwinnett-Hall-Hancock-Haralson-Harris-Heard-Henry-Houston-Jackson-
Jasper-Jefferson-Johnson-Jones-Lamar-Laurens-Lumpkin-Macon-
Madison-Marion-Meriwether-Monroe-Montgomery-Morgan-Murray-
Muscogee-Newton-North Fulton-Oconee-Oglethorpe-Paulding-Peach-
Pickens-Pike-Polk-Pulaski-Putnam-Rockdale-Schley-South Fulton-
Spalding-Stewart-Sumter-Talbot-Taliaferro-Taylor-Telfair-Toombs-
Towns-Treutlen-Troup-Twiggs-Union-Upson-Walker-Walton-Warren-
Washington-Webster-Wheeler-White-Whitfield-Wilcox-Wilkes-
Wilkinson-
400 AM EDT Thu Aug 10 2017

This Hazardous Weather Outlook is for portions of North and Central
Georgia.

.DAY ONE...Today and Tonight...

Isolated to scattered thunderstorms are expected. A few strong
storms are possible. The primary hazards will be gusty winds,
frequent lightning and very heavy rainfall. With soils at or
approaching saturation across much of north and central Georgia,
localized flooding is possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

There will be scattered thunderstorms each day, especially during
the afternoon and evening hours. A few storms could be strong with
the main hazards being gusty winds, frequent lightning and locally
heavy rain.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested, but spotters are encouraged to
submit reports of severe weather through the web by going to
weather.gov/atlanta.

In the hours before

Local storm report, Aug 10, 5:17 PM EDT, 2 hours 15 minutes before

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Special weather statement, Aug 10, 5:22 PM EDT, 2 hours 10 minutes before

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Local storm report, Aug 10, 5:29 PM EDT, 2 hours 3 minutes before

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Special weather statement, Aug 10, 6:26 PM EDT, 1 hour 6 minutes before

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Special weather statement, Aug 10, 6:48 PM EDT, 44 minutes before

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Special weather statement, Aug 10, 7:32 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
Aug 10, 1:10 PM EDT	Special Weather Statement	FFC	Bartow, Cherokee	35 min
Aug 10, 1:33 PM EDT	Flash Flood Warning	FFC	Bartow, Cherokee	6 hr
Aug 10, 1:57 PM EDT	Special Weather Statement	FFC	Murray, Walker, Whitfield	33 min
Aug 10, 2:33 PM EDT	Special Weather Statement	FFC	Chattooga, Murray, Whitfield	27 min
Aug 10, 3:05 PM EDT	Special Weather Statement	FFC	Gwinnett, Haralson, Paulding, Polk	25 min
Aug 10, 3:13 PM EDT	Special Weather Statement	FFC	Macon, Schley	32 min
Aug 10, 3:42 PM EDT	Special Weather Statement	FFC	Chattooga, Gordon, Pickens	33 min
Aug 10, 3:55 PM EDT	Special Weather Statement	FFC	Banks, Hall, Jackson	35 min
Aug 10, 4:24 PM EDT	Special Weather Statement	FFC	Bartow, Cherokee, Floyd, Pickens	36 min
Aug 10, 4:47 PM EDT	Special Weather Statement	FFC	Carroll	28 min
Aug 10, 5:12 PM EDT	Special Weather Statement	FFC	Carroll, Douglas	33 min
Aug 10, 5:22 PM EDT	Special Weather Statement	FFC	DeKalb, Rockdale	23 min
Aug 10, 6:26 PM EDT	Special Weather Statement	FFC	Clayton, Coweta, DeKalb, Fayette, Heard, Henry and 2 more	34 min
Aug 10, 6:48 PM EDT	Special Weather Statement	FFC	Chattooga, Floyd	27 min
Aug 10, 7:37 PM EDT	Special Weather Statement	FFC	Clayton, Coweta, Fayette	38 min
Aug 10, 7:56 PM EDT	Special Weather Statement	FFC	Meriwether, Troup	34 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; radar from the NEXRAD Level II archive.