Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

June 24, 2017Coweta County, Georgia

NWS Atlanta, GA issued this special weather statement at Jun 24, 2017, 10:57 AM EDT for Coweta County, Georgia. It was in force for 33 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: Jun 24, 2017, 10:57 AM EDT (14:57 UTC)
Expired: Jun 24, 2017, 11:30 AM EDT
In force: 33 min
Issued by: NWS Atlanta, GA
Wind: 40

County Coweta County, GA

The radar

The Atlanta radar (KFFC), 35 km from the middle of the area, began a volume at 15:00 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, 3.0 hours before the alert went out and 40 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: 149 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 582 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Jun 24, 7:40 AM EDT, 3 hours 17 minutes earlier.

Area forecast discussion, Jun 24, 7:40 AM EDT, 3 hours 17 minutes before

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Hazardous weather outlook, Jun 24, 3:33 AM EDT, 7 hours 24 minutes before

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In the hours before

Special weather statement, Jun 24, 10:57 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
1057 AM EDT SAT JUN 24 2017

GAZ052-053-066-067-241530-
Coweta GA-Troup GA-Heard GA-Meriwether GA-
1057 AM EDT SAT JUN 24 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN COWETA...
NORTHEASTERN TROUP...SOUTHEASTERN HEARD AND NORTHERN MERIWETHER
COUNTIES UNTIL 1130 AM EDT...

At 1057 AM EDT...a strong thunderstorm was over Hogansville, or 9
miles northeast of Lagrange...moving east at 30 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 this storm include
Hogansville, Grantville, Luthersville, Moreland, Lone Oak, Gay,
Corinth, Rocky Mount, Saint Marks, Louise, Alvaton, Harrisonville and
Wooster.

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 3305 8498 3322 8504 3336 8467 3308 8452
TIME...MOT...LOC 1457Z 260DEG 27KT 3315 8493

WIND...40MPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 8:13 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Dawson, Forsyth, Gwinnett, Hall, Jackson	47 min
Jun 23, 8:16 PM EDT	Special Weather Statement	FFC	Gwinnett	29 min
Jun 23, 8:42 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Henry, Spalding	48 min
Jun 23, 8:50 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Barrow, Gwinnett, Hall, Jackson	40 min
Jun 23, 8:52 PM EDT	Special Weather Statement	FFC	DeKalb	38 min
Jun 23, 9:13 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, DeKalb, Henry, Newton, Rockdale	47 min
Jun 23, 9:57 PM EDT	Special Weather Statement	FFC	Morgan, Newton	48 min
Jun 24, 2:04 PM EDT	Special Weather Statement	FFC	Twiggs	26 min
Jun 24, 2:17 PM EDT	Special Weather Statement	FFC	Stewart	28 min
Jun 24, 6:50 PM EDT	Special Weather Statement	FFC	Butts	25 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.