Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

July 31, 20184 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Jul 31, 2018, 2:37 PM EDT for 4 counties in Georgia. It was in force for 38 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 31, 2018, 2:37 PM EDT (18:37 UTC)
Expired: Jul 31, 2018, 3:15 PM EDT
In force: 38 min
Issued by: NWS Atlanta, GA
Wind: 40

Counties Clayton County, GA, Coweta County, GA, Fayette County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 11 km from the middle of the area, began a volume at 18:38 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, 6.6 hours before the alert went out and 14 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: 735 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 581 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 52 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 31, 1:35 PM EDT, 1 hour 2 minutes earlier.

Area forecast discussion, Jul 31, 1:35 PM EDT, 1 hour 2 minutes before

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Hazardous weather outlook, Jul 31, 11:38 AM EDT, 2 hours 59 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
1138 AM EDT Tue Jul 31 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-011545-
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-
1138 AM EDT Tue Jul 31 2018

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

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

Scattered to numerous showers and thunderstorms are expected today.
A few of the storms could become strong producing gusty winds and
frequent lightning strikes. An isolated severe thunderstorm
cannot be ruled out. Any severe thunderstorm that develops will
have the potential to produce damaging wind gusts. Localized
flooding is also possible, especially in low lying areas and where
thunderstorms repeatedly move.

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

...Flash Flood Watch In Effect For Wednesday and Thursday...

Scattered to numerous showers and thunderstorms are expected each
day. The primary severe weather hazard will be flooding from heavy
rainfall. A Flash Flood Watch has been issued for Wednesday and
Thursday, when the heaviest rainfall is anticipated. In addition,
strong to isolated severe thunderstorms will be possible.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed through tonight.

In the hours before

Special weather statement, Jul 31, 1:13 PM EDT, 1 hour 24 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
113 PM EDT TUE JUL 31 2018

GAZ078-089-090-311745-
Chattahoochee GA-Harris GA-Muscogee GA-
113 PM EDT TUE JUL 31 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN CHATTAHOOCHEE...
SOUTHEASTERN HARRIS AND MUSCOGEE COUNTIES UNTIL 145 PM EDT...

At 113 PM EDT...a line of strong thunderstorms was along a line
extending from Fortson to near Fort Mitchell Activity Center...and
moving east at 15 mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground lightning
           and heavy rain.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light...unsecured objects. Heavy rain may cause temporary
           street flooding especially in poor drainage areas.

Some locations in the path of these storms include
Columbus, North Fort Benning, Bibb City, Fort Benning/lawson Army Air
Fld, Ellerslie, Laurel Hills, Green Island Hills, Vista Terrace,
Columbus Metropolitan Airport, Jamestown/south Fort Benning, Rose
Hill, Benning Hills, Avondale, Benning Park, Fortson, Mulberry Grove,
Saint Marys Hills, Edgewood, Flat Rock and Highland Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3267 8501 3264 8472 3223 8485 3223 8492
      3225 8492 3226 8489 3230 8494 3233 8501
      3238 8497 3238 8499 3239 8497 3241 8498
      3242 8496 3244 8497 3245 8499 3246 8500
      3250 8500 3256 8504
TIME...MOT...LOC 1713Z 269DEG 12KT 3260 8495 3225 8506

WIND...40MPH

Special weather statement, Jul 31, 1:32 PM EDT, 1 hour 5 minutes before

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Special weather statement, Jul 31, 2:05 PM EDT, 32 minutes before

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Special weather statement, Jul 31, 2:20 PM EDT, 17 minutes before

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Special weather statement, Jul 31, 2:30 PM EDT, 7 minutes before

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Special weather statement, Jul 31, 2:37 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 30, 8:07 PM EDT	Special Weather Statement	FFC	Cherokee	23 min
Jul 30, 8:17 PM EDT	Special Weather Statement	FFC	Johnson	28 min
Jul 30, 8:25 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson, Johnson, Washington	35 min
Jul 31, 3:50 AM EDT	Flash Flood Watch	FFC	Banks, Barrow, Bartow, Butts, Carroll, Catoosa and 56 more	3 days
Jul 31, 12:49 PM EDT	Special Weather Statement	FFC	Bartow, Polk	41 min
Jul 31, 1:13 PM EDT	Special Weather Statement	FFC	Muscogee	32 min
Jul 31, 1:32 PM EDT	Special Weather Statement	FFC	Cobb, Paulding, Polk	28 min
Jul 31, 2:05 PM EDT	Special Weather Statement	FFC	Polk	40 min
Jul 31, 2:13 PM EDT	Flash Flood Warning	FFC	Polk	6 hr
Jul 31, 2:20 PM EDT	Special Weather Statement	FFC	Forsyth	25 min
Jul 31, 2:30 PM EDT	Special Weather Statement	FFC	Stewart	45 min
Jul 31, 2:58 PM EDT	Special Weather Statement	FFC	Troup	32 min
Jul 31, 3:10 PM EDT	Special Weather Statement	FFC	Clayton, DeKalb, Fayette, Henry, Spalding	50 min
Jul 31, 3:19 PM EDT	Special Weather Statement	FFC	Chattahoochee, Marion, Stewart, Taylor	26 min
Jul 31, 3:22 PM EDT	Special Weather Statement	FFC	Gwinnett	38 min
Jul 31, 3:27 PM EDT	Special Weather Statement	FFC	Whitfield	48 min
Jul 31, 3:38 PM EDT	Special Weather Statement	FFC	Douglas	52 min
Jul 31, 3:53 PM EDT	Special Weather Statement	FFC	Chattooga, Walker, Whitfield	52 min
Jul 31, 3:56 PM EDT	Special Weather Statement	FFC	Harris, Troup	34 min
Jul 31, 3:59 PM EDT	Special Weather Statement	FFC	Washington, Wilkinson	31 min
Jul 31, 4:16 PM EDT	Special Weather Statement	FFC	Douglas	29 min
Jul 31, 4:19 PM EDT	Special Weather Statement	FFC	Banks, Barrow, Gwinnett, Jackson, Newton, Rockdale	41 min
Jul 31, 4:22 PM EDT	Special Weather Statement	FFC	Coweta, Fayette	38 min
Jul 31, 4:31 PM EDT	Special Weather Statement	FFC	Carroll, Heard	44 min
Jul 31, 4:32 PM EDT	Special Weather Statement	FFC	Hancock, Johnson, Washington	28 min
Jul 31, 4:36 PM EDT	Special Weather Statement	FFC	Wilkes	24 min
Jul 31, 4:43 PM EDT	Special Weather Statement	FFC	Gordon	47 min
Jul 31, 5:01 PM EDT	Special Weather Statement	FFC	Carroll, Haralson	44 min
Jul 31, 5:03 PM EDT	Special Weather Statement	FFC	Glascock, Hancock, Warren	27 min
Jul 31, 5:07 PM EDT	Special Weather Statement	FFC	Wilkes	23 min
Jul 31, 5:26 PM EDT	River Flood Warning	FFC	Gwinnett	3 hr
Jul 31, 5:30 PM EDT	Special Weather Statement	FFC	Gilmer	45 min
Jul 31, 5:31 PM EDT	Flash Flood Warning	FFC	Wilkes	6 hr
Jul 31, 5:36 PM EDT	Special Weather Statement	FFC	Bleckley, Dodge, Laurens, Pulaski, Wilcox	24 min
Jul 31, 5:46 PM EDT	Special Weather Statement	FFC	Taliaferro, Warren	29 min
Jul 31, 6:12 PM EDT	Special Weather Statement	FFC	Clarke, Madison, Morgan, Oconee	48 min
Jul 31, 6:24 PM EDT	River Flood Warning	FFC	Gwinnett	72 min

Nearby

Special Weather Statements in Georgia, 2018 Every special weather statement in 2018

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.