Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

May 16, 2018Douglas County, Fulton County, Gwinnett County, Georgia

NWS Atlanta, GA issued this special weather statement at May 16, 2018, 9:00 AM EDT for Douglas County, Fulton County, Gwinnett County, Georgia. It was in force for 60 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: May 16, 2018, 9:00 AM EDT (13:00 UTC)
Expired: May 16, 2018, 10:00 AM EDT
In force: 60 min
Issued by: NWS Atlanta, GA

Counties Douglas County, GA, Fulton County, GA, Gwinnett County, GA

The radar

The Atlanta radar (KFFC), 76 km from the middle of the area, began a volume at 13:03 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

Birmingham, AL (KBMX), launched 12:00Z, 1.0 hours before the alert went out and 251 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: 308 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 34 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 May 16, 7:48 AM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, May 16, 7:48 AM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, May 16, 5:00 AM EDT, 4 hours before

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In the hours before

Special weather statement, May 16, 8:07 AM EDT, 53 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
807 AM EDT WED MAY 16 2018

GAZ032-043-161300-
Douglas GA-Cobb GA-
807 AM EDT WED MAY 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DOUGLAS AND COBB
COUNTIES UNTIL 900 AM EDT...

At 807 AM EDT...a line of heavy showers was along a line extending
from near Roswell to near Douglasville. These showers were nearly
stationary.

  HAZARD...Heavy rain.

  IMPACT...Heavy rain may cause temporary street flooding especially
           in poor drainage areas.

Some locations in the path of these storms include
Marietta, Douglasville, Roswell, Smyrna, Powder Springs, Austell,
Lithia Springs, Fair Oaks, Mount Bethel, Sweetwater Creek State Park,
White Water Park, Sweat Mountain, Vinings, Jim R Miller Park, Chapel
Hill, Winston, Sandy Plains, Dobbins Air Reserve Base and Mableton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should slow down and be prepared for possible loss of
control due to hydroplaning.

LAT...LON 3378 8478 3379 8472 3383 8472 3388 8465
      3407 8453 3407 8442 3397 8438 3391 8445
      3388 8444 3384 8447 3362 8474 3374 8484
TIME...MOT...LOC 1207Z 206DEG 1KT 3402 8442 3375 8469

Special weather statement, May 16, 8:35 AM EDT, 25 minutes before

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Special weather statement, May 16, 9:00 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
900 AM EDT WED MAY 16 2018

GAZ022-032>034-043>045-161400-
De Kalb GA-North Fulton GA-Douglas GA-Cobb GA-Forsyth GA-Gwinnett GA-
South Fulton GA-
900 AM EDT WED MAY 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DE KALB...NORTH
FULTON...NORTHERN DOUGLAS...SOUTHERN COBB...SOUTHERN FORSYTH...
GWINNETT AND SOUTH FULTON COUNTIES UNTIL 1000 AM EDT...

At 859 AM EDT...a line of heavy showers was along a line extending
from near Rest Haven to near Bill Arp. These showers were nearly
stationary.

  HAZARD...Heavy rain.

  IMPACT...Heavy rain may cause temporary street flooding especially
           in poor drainage areas.

Some locations in the path of these storms include
Atlanta, Marietta, Douglasville, Lawrenceville, Decatur, Sandy
Springs, Roswell, Johns Creek, Alpharetta, Smyrna, Dunwoody, East
Point, Duluth, Sugar Hill, Suwanee, Buford, Lilburn, Chamblee,
Norcross and Doraville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should slow down and be prepared for possible loss of
control due to hydroplaning.

LAT...LON 3373 8484 3379 8474 3379 8473 3380 8472
      3418 8406 3417 8406 3416 8404 3420 8402
      3419 8401 3419 8402 3415 8403 3410 8387
      3411 8384 3410 8383 3406 8384 3377 8431
      3359 8469
TIME...MOT...LOC 1259Z 103DEG 1KT 3411 8390 3366 8476

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 8:07 AM EDT	Special Weather Statement	FFC	Cobb, Douglas	53 min
May 16, 8:35 AM EDT	Special Weather Statement	FFC	Carroll	40 min
May 16, 9:19 AM EDT	Special Weather Statement	FFC	Carroll	41 min
May 16, 9:31 AM EDT	Flash Flood Warning	FFC	Cobb, Douglas, Fulton	6 hr
May 16, 9:40 AM EDT	River Flood Warning	FFC	Gwinnett	74 min
May 16, 9:59 AM EDT	Special Weather Statement	FFC	Banks, Cobb, Forsyth, Hall	61 min
May 16, 10:09 AM EDT	River Flood Warning	FFC	Cobb, Douglas	3 hr
May 16, 10:14 AM EDT	River Flood Warning	FFC	Fulton, Gwinnett	98 min
May 16, 10:16 AM EDT	Special Weather Statement	FFC	Douglas	44 min
May 16, 10:42 AM EDT	Special Weather Statement	FFC	Chattahoochee, Lamar, Marion, Monroe, Stewart, Talbot and 3 more	48 min
May 16, 10:56 AM EDT	Special Weather Statement	FFC	DeKalb, Fulton	49 min
May 16, 11:27 AM EDT	Special Weather Statement	FFC	Butts, Jasper, Lamar, Marion, Monroe, Newton and 5 more	48 min
May 16, 12:46 PM EDT	Special Weather Statement	FFC	Peach	44 min
May 16, 12:50 PM EDT	Special Weather Statement	FFC	Walton	25 min
May 16, 12:55 PM EDT	Special Weather Statement	FFC	Webster	35 min
May 16, 1:23 PM EDT	Special Weather Statement	FFC	Macon, Peach	52 min
May 16, 1:26 PM EDT	Special Weather Statement	FFC	Jasper	34 min
May 16, 2:29 PM EDT	Special Weather Statement	FFC	Bibb, Dooly, Houston, Peach, Sumter	46 min
May 16, 2:34 PM EDT	Special Weather Statement	FFC	Greene, Oglethorpe	41 min
May 16, 3:18 PM EDT	Special Weather Statement	FFC	Crisp, Dooly, Houston, Pulaski, Twiggs	27 min
May 16, 3:54 PM EDT	Special Weather Statement	FFC	Montgomery, Telfair, Toombs, Wheeler	51 min
May 16, 3:59 PM EDT	Special Weather Statement	FFC	Crisp	31 min
May 16, 4:33 PM EDT	Special Weather Statement	FFC	Emanuel	27 min
May 16, 5:01 PM EDT	Special Weather Statement	FFC	Crisp, Dodge, Telfair, Wilcox	29 min
May 16, 5:33 PM EDT	Special Weather Statement	FFC	Bleckley, Dodge, Pulaski	27 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.