Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

September 5, 2017Cobb County, Forsyth County, Georgia

NWS Atlanta, GA issued this special weather statement at Sep 5, 2017, 7:02 PM EDT for Cobb County, Forsyth 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: Sep 5, 2017, 7:02 PM EDT (23:02 UTC)
Expired: Sep 5, 2017, 7:30 PM EDT
In force: 28 min
Issued by: NWS Atlanta, GA
Hail: 0.75 in
Wind: 50

Counties Cobb County, GA, Forsyth County, GA

The radar

The Atlanta radar (KFFC), 83 km from the middle of the area, began a volume at 23:02 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, 11.0 hours before the alert went out and 81 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: 483 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 936 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 28 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 Sep 5, 6:59 PM EDT, 3 minutes earlier.

Area forecast discussion, Sep 5, 6:59 PM EDT, 3 minutes before

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Hazardous weather outlook, Sep 5, 11:12 AM EDT, 7 hours 50 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1112 AM EDT Tue Sep 5 2017

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-061515-
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-
1112 AM EDT Tue Sep 5 2017

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

.DAY ONE...This Afternoon and Tonight...

A cold front will bring another good chance of showers and
thunderstorms to the area this afternoon through Wednesday
evening. A few strong to isolated severe storms will be possible
with hail up to quarter size, strong wind gusts, frequent
lightning and heavy rain being the primary hazards.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

Increased chances of precip expected Sunday and Monday as
hurricane Irma nears the southeastern U.S. There is still some
uncertainty with track of Irma, but it is possible to see some
impacts by the beginning of next week. Continue to refer to the
latest official tracks and advisories issued by the National
Hurricane Center for updates on Irma.

.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

Special weather statement, Sep 5, 5:57 PM EDT, 1 hour 5 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
557 PM EDT TUE SEP 5 2017

GAZ004-005-012-019-052230-
Whitfield GA-Gordon GA-Murray GA-Floyd GA-
557 PM EDT TUE SEP 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WHITFIELD...NORTHWESTERN
GORDON...SOUTHWESTERN MURRAY AND NORTHEASTERN FLOYD COUNTIES UNTIL
630 PM EDT...

At 557 PM EDT...a strong thunderstorm was over Sugar Valley, or near
Calhoun...moving east at 35 mph.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
Calhoun, Resaca, Oostanaula, Sugar Valley, Redbud, Everett Springs,
Lake Marvin, Tilton and Nickelsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3469 8490 3450 8478 3446 8511 3453 8514
      3454 8514 3459 8511 3459 8506 3461 8506
TIME...MOT...LOC 2157Z 255DEG 29KT 3454 8503

HAIL...0.25IN
WIND...40MPH

Special weather statement, Sep 5, 6:08 PM EDT, 54 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
608 PM EDT TUE SEP 5 2017

GAZ033-043-044-052245-
North Fulton GA-Douglas GA-South Fulton GA-
608 PM EDT TUE SEP 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTH FULTON...DOUGLAS AND SOUTH
FULTON COUNTIES UNTIL 645 PM EDT...

At 608 PM EDT...a strong thunderstorm was over Fairplay, or 10 miles
southwest of Douglasville...moving east at 25 mph.

  HAZARD...Up to 40 mph wind...pea sized hail and frequent cloud to
           ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of this storm include
Atlanta, Douglasville, East Point, Union City, College Park,
Fairburn, Palmetto, Chattahoochee Hill Country, Sweetwater Creek
State Park, Hannah, Chapel Hill, Bill Arp, Fairplay, Campbellton and
Sandtown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3377 8460 3374 8458 3380 8450 3362 8446
      3355 8446 3355 8483 3356 8483 3357 8481
      3357 8489 3363 8491 3368 8490
TIME...MOT...LOC 2208Z 255DEG 21KT 3362 8483

HAIL...0.25IN
WIND...40MPH

Special weather statement, Sep 5, 6:17 PM EDT, 45 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
617 PM EDT TUE SEP 5 2017

GAZ008-013>016-021>023-033-052300-
Hall GA-Dawson GA-North Fulton GA-Union GA-Cherokee GA-Forsyth GA-
Pickens GA-White GA-Lumpkin GA-
617 PM EDT TUE SEP 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HALL...DAWSON...
NORTH FULTON...SOUTHEASTERN UNION...NORTHEASTERN CHEROKEE...
NORTHWESTERN FORSYTH...SOUTHEASTERN PICKENS...WHITE AND LUMPKIN
COUNTIES UNTIL 700 PM EDT...

At 617 PM EDT...a line of strong thunderstorms was along a line
extending from Smithgall Woods Conservation Are to near Canton...and
moving southeast at 30 mph.

  HAZARD...40 to 50 mph wind...up to penny sized hail and frequent
           cloud to ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of these storms include
Canton, Dahlonega, Cleveland, Dawsonville, Ball Ground, Nelson,
Clermont, Waleska, Helen, Free Home, Buffington, Dougherty, Drew,
Coal Mountain, Mossy Creek, Hightower, Juno, Matt, Murrayville and
Lathemtown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3466 8366 3462 8364 3458 8364 3455 8362
      3453 8363 3451 8367 3449 8366 3415 8431
      3432 8457 3477 8386
TIME...MOT...LOC 2217Z 319DEG 23KT 3468 8379 3424 8453

HAIL...0.75IN
WIND...50MPH

Special weather statement, Sep 5, 6:20 PM EDT, 42 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
620 PM EDT TUE SEP 5 2017

GAZ020-021-030>033-052300-
Polk GA-North Fulton GA-Cobb GA-Cherokee GA-Bartow GA-Paulding GA-
620 PM EDT TUE SEP 5 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN POLK...NORTH
FULTON...NORTHWESTERN COBB...SOUTHWESTERN CHEROKEE...SOUTHERN BARTOW
AND NORTHEASTERN PAULDING COUNTIES UNTIL 700 PM EDT...

At 620 PM EDT...a line of strong thunderstorms was along a line
extending from near White to Van Wert...and moving east at 35 mph.

  HAZARD...40 to 50 mph wind...up to penny sized hail and frequent
           cloud to ground lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects.

Some locations in the path of these storms include
Marietta, Canton, Cartersville, Dallas, Roswell, Kennesaw, Woodstock,
Acworth, Holly Springs, Rockmart, Euharlee, Emerson, Aragon, Waleska,
Braswell, Taylorsville, Hickory Flat, Burnt Hickory Ridge, Kellogg
Creek and Red Top Mountain State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning.

LAT...LON 3414 8430 3391 8473 3401 8518 3435 8462
TIME...MOT...LOC 2220Z 266DEG 32KT 3427 8471 3399 8506

HAIL...0.75IN
WIND...50MPH

Special weather statement, Sep 5, 6:57 PM EDT, 5 minutes before

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Special weather statement, Sep 5, 7:02 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 4, 8:26 PM EDT	Special Weather Statement	FFC	Toombs	34 min
Sep 4, 10:40 PM EDT	Special Weather Statement	FFC	Treutlen	35 min
Sep 5, 3:15 PM EDT	Special Weather Statement	FFC	Chattooga	30 min
Sep 5, 3:21 PM EDT	Special Weather Statement	FFC	Gilmer, Murray	24 min
Sep 5, 3:49 PM EDT	Special Weather Statement	FFC	Chattooga, Floyd	26 min
Sep 5, 4:04 PM EDT	Special Weather Statement	FFC	Murray	26 min
Sep 5, 4:23 PM EDT	Special Weather Statement	FFC	Catoosa	37 min
Sep 5, 4:38 PM EDT	Special Weather Statement	FFC	Dade	37 min
Sep 5, 4:50 PM EDT	Special Weather Statement	FFC	Fannin	25 min
Sep 5, 5:01 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer	29 min
Sep 5, 5:07 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	23 min
Sep 5, 5:08 PM EDT	Special Weather Statement	FFC	Murray	37 min
Sep 5, 5:18 PM EDT	Special Weather Statement	FFC	Catoosa	27 min
Sep 5, 5:32 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Walker, Whitfield	13 min
Sep 5, 5:34 PM EDT	Special Weather Statement	FFC	Cherokee	26 min
Sep 5, 5:47 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Pickens	28 min
Sep 5, 5:51 PM EDT	Special Weather Statement	FFC	Polk	24 min
Sep 5, 5:57 PM EDT	Special Weather Statement	FFC	Gordon	33 min
Sep 5, 6:08 PM EDT	Special Weather Statement	FFC	Douglas	37 min
Sep 5, 6:17 PM EDT	Special Weather Statement	FFC	Dawson, Lumpkin, White	43 min
Sep 5, 6:20 PM EDT	Special Weather Statement	FFC	Cherokee	40 min
Sep 5, 6:40 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Forsyth, Hall, Lumpkin, White	35 min
Sep 5, 6:51 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Douglas, Fayette, Fulton	24 min
Sep 5, 6:57 PM EDT	Special Weather Statement	FFC	Haralson, Paulding	33 min
Sep 5, 7:12 PM EDT	Special Weather Statement	FFC	Banks, Hall	33 min
Sep 5, 7:17 PM EDT	Special Weather Statement	FFC	Clayton	28 min
Sep 5, 7:20 PM EDT	Special Weather Statement	FFC	Coweta	25 min
Sep 5, 7:33 PM EDT	Special Weather Statement	FFC	Cobb, Forsyth, Gwinnett	27 min
Sep 5, 7:38 PM EDT	Special Weather Statement	FFC	Fulton	37 min
Sep 5, 7:47 PM EDT	Special Weather Statement	FFC	Clayton, Coweta, Fayette	43 min
Sep 5, 7:48 PM EDT	Special Weather Statement	FFC	Banks, Hall, Jackson	27 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.