Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Atlanta, GA

September 28, 2012Butts County, Georgia

NWS Atlanta, GA issued this special weather statement at Sep 28, 2012, 6:15 PM EDT for Butts County, Georgia. It was in force for 30 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: Sep 28, 2012, 6:15 PM EDT (22:15 UTC)
Expired: Sep 28, 2012, 6:45 PM EDT
In force: 30 min
Issued by: NWS Atlanta, GA

County Butts County, GA

The radar

The Atlanta radar (KFFC), 58 km from the middle of the area, began a volume at 22:17 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, 10.3 hours before the alert went out and 52 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: 1383 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Sep 28, 4:10 PM EDT, 2 hours 5 minutes earlier.

Area forecast discussion, Sep 28, 4:10 PM EDT, 2 hours 5 minutes before

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Hazardous weather outlook, Sep 28, 4:17 PM EDT, 1 hour 58 minutes before

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In the hours before

Special weather statement, Sep 28, 3:20 PM EDT, 2 hours 55 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
320 PM EDT FRI SEP 28 2012

GAZ033-044-045-281945-
320 PM EDT FRI SEP 28 2012

...SIGNIFICANT WEATHER ADVISORY FOR 30 TO 40 MPH WINDS IN DEKALB AND
FULTON COUNTIES UNTIL 345 PM EDT...

AT 315 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER BROOKHAVEN...MOVING EAST AT 10 MPH.

WIND GUSTS OF 30 TO 40 MPH ARE LIKELY AS THIS STORM MOVES ACROSS
DEKALB AND FULTON COUNTIES THROUGH 345 PM EDT. SOME LOCATIONS IN THE
PATH OF THE STORM INCLUDE BUCKHEAD...BOLTON...BANKHEAD...CASCADE
HEIGHTS...VIRGINIA HIGHLAND...WEST END...SWEET AUBURN...ATLANTIC
STATION...LAKEWOOD PARK...CHASTAIN MEMORIAL PARK...PIEDMONT
PARK...GRANT PARK-ZOO ATLANTA...TURNER FIELD...MIDTOWN AND ATLANTA.

&&

LAT...LON 3380 8451 3383 8447 3383 8445 3385 8446
      3389 8441 3392 8425 3386 8417 3368 8415
      3369 8462
TIME...MOT...LOC 1920Z 281DEG 9KT 3387 8433

Special weather statement, Sep 28, 3:25 PM EDT, 2 hours 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
325 PM EDT FRI SEP 28 2012

GAZ069>071-081-282000-
325 PM EDT FRI SEP 28 2012

...SIGNIFICANT WEATHER ADVISORY FOR PEA SIZED HAIL AND 40 MPH WINDS
IN MONROE...LAMAR...UPSON AND CRAWFORD COUNTIES UNTIL 400 PM EDT...

AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER THOMASTON...MOVING EAST AT 20 MPH.

WIND GUSTS OF 40 MPH ARE LIKELY AS THIS STORM MOVES ACROSS MONROE...
LAMAR...UPSON AND CRAWFORD COUNTIES THROUGH 400 PM EDT. SOME
LOCATIONS IN THE PATH OF THE STORM INCLUDE THOMASTON...REDBONE
CROSSROADS...THE ROCK...LOGTOWN...YATESVILLE...CULLODEN...REDBONE...
BRENT AND RUSSELLVILLE.

&&

LAT...LON 3304 8388 3276 8391 3288 8433 3297 8433
TIME...MOT...LOC 1925Z 271DEG 17KT 3292 8427

Special weather statement, Sep 28, 3:55 PM EDT, 2 hours 20 minutes before

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Special weather statement, Sep 28, 5:25 PM EDT, 50 minutes before

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Special weather statement, Sep 28, 6:15 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
Sep 28, 3:20 PM EDT	Special Weather Statement	FFC	DeKalb, Fulton	25 min
Sep 28, 3:25 PM EDT	Special Weather Statement	FFC	Monroe, Upson	35 min
Sep 28, 3:55 PM EDT	Special Weather Statement	FFC	Bibb	35 min
Sep 28, 5:25 PM EDT	Special Weather Statement	FFC	Newton	35 min

Nearby

Special Weather Statements in Georgia, 2012 Every special weather statement in 2012

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.