Alert archive / Georgia / Special Weather Statements in 2013

Special Weather Statement, NWS Atlanta, GA

July 6, 20134 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Jul 6, 2013, 4:29 AM EDT for 4 counties in Georgia. It was in force for 46 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 6, 2013, 4:29 AM EDT (08:29 UTC)
Expired: Jul 6, 2013, 5:15 AM EDT
In force: 46 min
Issued by: NWS Atlanta, GA

Counties Barrow County, GA, Jackson County, GA, Towns County, GA, White County, GA

The radar

The Greer radar (KGSP), 132 km from the middle of the area, began a volume at 08:32 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 00:00Z, 8.5 hours before the alert went out and 160 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: 969 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.9

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 6, 4:03 AM EDT, 26 minutes earlier.

Area forecast discussion, Jul 6, 4:03 AM EDT, 26 minutes before

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Hazardous weather outlook, Jul 6, 4:26 AM EDT, 3 minutes before

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In the hours before

Special weather statement, Jul 6, 3:49 AM EDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
349 AM EDT SAT JUL 6 2013

GAZ023>025-035-037-047-049-060830-
349 AM EDT SAT JUL 6 2013

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN WALTON...OCONEE...
MORGAN...BANKS...BARROW...HALL AND JACKSON COUNTIES UNTIL 430 AM
EDT...

AT 343 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM 6 MILES NORTH OF TALMO TO 6 MILES SOUTH OF
RUTLEDGE...MOVING NORTH AT 25 MPH. THESE STORMS HAVE HOURLY RAINFALL
RATES OF ONE HALF TO ONE INCH...FALLING OVER AREAS THAT SAW HEAVY
RAIN EARLIER TODAY.

RUNOFF FROM THESE STORMS WILL CAUSE MINOR FLOODING OF SMALL CREEKS
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES ACROSS
WALTON...OCONEE...MORGAN...BANKS...BARROW...HALL AND JACKSON
COUNTIES...INCLUDING AREAS AROUND HERNDONVILLE...RUTLEDGE...MONROE...
HARD LABOR CREEK STATE PARK...EBENEZER...PANNELL...CAMPTON...
BOSTWICK...BETHLEHEM...MOUNT VERNON...GOOD HOPE...GRATIS...FORT YARGO
STATE PARK...WINDER AND BOGART. ADDITIONALLY...COUNTRY ROADS AND
FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS ARE SUBJECT TO MINOR
FLOODING.

&&

LAT...LON 3436 8357 3378 8351 3346 8352 3370 8375
      3433 8376
TIME...MOT...LOC 0748Z 182DEG 21KT 3429 8375 3379 8375
          3357 8358

Special weather statement, Jul 6, 4:29 AM 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 5, 8:05 PM EDT	Special Weather Statement	FFC	Jones	25 min
Jul 5, 8:12 PM EDT	Special Weather Statement	FFC	Cherokee, Cobb, Coweta, Douglas, Fulton, Paulding	48 min
Jul 5, 10:28 PM EDT	Special Weather Statement	FFC	Clarke, Madison	47 min
Jul 6, 3:49 AM EDT	Special Weather Statement	FFC	Barrow, Jackson, Walton	41 min
Jul 6, 5:16 AM EDT	Special Weather Statement	FFC	Towns, White	29 min
Jul 6, 5:44 AM EDT	Special Weather Statement	FFC	Towns, White	31 min
Jul 6, 1:06 PM EDT	Special Weather Statement	FFC	Whitfield	24 min
Jul 6, 1:14 PM EDT	River Flood Warning	FFC	Johnson, Washington, Wilkinson	15 hr
Jul 6, 1:14 PM EDT	River Flood Warning	FFC	Emanuel, Treutlen	28 hr
Jul 6, 3:27 PM EDT	Special Weather Statement	FFC	Chattahoochee, Marion, Muscogee, Schley, Stewart, Sumter and 1 more	48 min
Jul 6, 4:00 PM EDT	Special Weather Statement	FFC	Floyd, Gordon, Polk	45 min
Jul 6, 5:24 PM EDT	Special Weather Statement	FFC	Carroll, Douglas	36 min
Jul 6, 6:37 PM EDT	Flash Flood Warning	FFC	Floyd, Polk	4 hr
Jul 6, 7:38 PM EDT	Flash Flood Warning	FFC	Whitfield	5 hr
Jul 6, 7:52 PM EDT	Special Weather Statement	FFC	Forsyth, Gwinnett	38 min

Nearby

Special Weather Statements in Georgia, 2013 Every special weather statement in 2013

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.