Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

August 14, 2017Madison County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 14, 2017, 10:16 PM EDT for Madison County, Georgia. It was in force for 44 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: Aug 14, 2017, 10:16 PM EDT (02:16 UTC)
Expired: Aug 14, 2017, 11:00 PM EDT
In force: 44 min
Issued by: NWS Atlanta, GA
Wind: 50

County Madison County, GA

The radar

The Greer radar (KGSP), 130 km from the middle of the area, began a volume at 02:16 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 00:00Z, 2.3 hours before the alert went out and 140 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: 314 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1290 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 62 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 Aug 14, 10:05 PM EDT, 11 minutes earlier.

Area forecast discussion, Aug 14, 10:05 PM EDT, 11 minutes before

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Hazardous weather outlook, Aug 14, 3:52 AM EDT, 18 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
352 AM EDT Mon Aug 14 2017

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-150800-
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-
352 AM EDT Mon Aug 14 2017

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

.DAY ONE...Today and Tonight...

Scattered showers and thunderstorms are expected. A few strong
to severe storms are possible. The primary hazards will be gusty
winds, frequent lightning and very heavy rainfall. With soils at
or approaching saturation across much of north and central
Georgia, localized flooding is possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

There will be scattered to numerous thunderstorms each day,
especially during the afternoon and evening hours. A few storms
could be strong with the main hazards being gusty winds, frequent
lightning and locally heavy rain.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

In the hours before

Special weather statement, Aug 14, 7:54 PM EDT, 2 hours 22 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
754 PM EDT MON AUG 14 2017

GAZ079-080-090>092-102-103-150045-
Schley GA-Chattahoochee GA-Stewart GA-Taylor GA-Marion GA-Webster GA-
Talbot GA-
754 PM EDT MON AUG 14 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SCHLEY...
SOUTHEASTERN CHATTAHOOCHEE...NORTHEASTERN STEWART...WESTERN TAYLOR...
MARION...NORTHWESTERN WEBSTER AND SOUTHEASTERN TALBOT COUNTIES UNTIL
845 PM EDT...

At 754 PM EDT...a line of strong thunderstorms was along a line
extending from near Talbotton to near Tazewell to Louvale...and
moving east at 10 mph.

  HAZARD...Frequent cloud to ground lightning and heavy rain.

  IMPACT...Lightning is one of nature's leading killers. If you can
           hear thunder...you are close enough to be struck by
           lightning. Heavy rain may cause temporary street flooding
           especially in poor drainage areas.

Some locations in the path of these storms include
Buena Vista, Talbotton, Cusseta, Junction City, Geneva, Brantley,
Seminole, Christopher, Baldwinville, Rupert, Charing, Brooklyn,
Renfroe, Oakland, Manta, Zellobee, Po Biddy Crossroads, Mauk, Howard
and Tazewell.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.  Electrical
appliances should not be used unless in an emergency. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3217 8492 3245 8458 3268 8458 3276 8434
      3276 8432 3244 8425 3210 8469
TIME...MOT...LOC 2354Z 266DEG 11KT 3266 8451 3243 8448 3217 8483

Special weather statement, Aug 14, 8:12 PM EDT, 2 hours 4 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
812 PM EDT MON AUG 14 2017

GAZ076-086-150045-
Jefferson GA-Emanuel GA-
812 PM EDT MON AUG 14 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN JEFFERSON AND
NORTHEASTERN EMANUEL COUNTIES UNTIL 845 PM EDT...

At 811 PM EDT...a strong thunderstorm was over Blundale, or 9 miles
northwest of Swainsboro...moving northeast at 20 mph.

  HAZARD...40 to 50 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
Summertown, Blundale, Three Points, Colemans Lake, Dellwood and
Modoc.

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 3260 8242 3270 8249 3272 8245 3276 8243
      3277 8246 3278 8248 3292 8228 3284 8232
      3283 8230 3283 8226 3280 8221 3282 8215
      3270 8210
TIME...MOT...LOC 0011Z 239DEG 16KT 3272 8240

WIND...50MPH

Special weather statement, Aug 14, 8:23 PM EDT, 1 hour 53 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
823 PM EDT MON AUG 14 2017

GAZ022-023-150100-
Hall GA-Forsyth GA-
823 PM EDT MON AUG 14 2017

...SIGNIFICANT WEATHER ADVISORY FOR HALL AND NORTHEASTERN FORSYTH
COUNTIES UNTIL 900 PM EDT...

At 822 PM EDT...a strong thunderstorm was over Oscarville, or 9 miles
northeast of Cumming...moving northeast at 15 mph.

  HAZARD...40 to 50 mph wind...up to penny sized hail...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
Gainesville, Flowery Branch, Oakwood, Aqualand Park, Chestatee,
Murrayville, Oscarville and Coal Mountain.

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 3429 8369 3415 8399 3428 8412 3434 8406
      3433 8396 3436 8398 3439 8398 3440 8397
      3442 8398 3443 8397 3445 8392 3447 8393
      3447 8391 3446 8391 3446 8389 3448 8388
TIME...MOT...LOC 0022Z 230DEG 13KT 3427 8399

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

Special weather statement, Aug 14, 8:29 PM EDT, 1 hour 47 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
829 PM EDT MON AUG 14 2017

GAZ034-046-047-150100-
Walton GA-Rockdale GA-Gwinnett GA-
829 PM EDT MON AUG 14 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN WALTON...
NORTHEASTERN ROCKDALE AND GWINNETT COUNTIES UNTIL 900 PM EDT...

At 828 PM EDT...a strong thunderstorm was over Snellville, or near
Lawrenceville...moving east at 15 mph.

  HAZARD...40 to 50 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
Lawrenceville, Snellville, Lilburn, Loganville, Dacula, Grayson,
Walnut Grove, Between, Mountain Park, Bold Springs, Windsor, Harbin,
Youth, Big Haynes Creek Park and Rosebud.

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 3407 8388 3403 8386 3400 8387 3398 8384
      3378 8374 3371 8407 3375 8403 3377 8406
      3378 8408 3384 8414 3394 8417
TIME...MOT...LOC 0028Z 250DEG 12KT 3388 8406

WIND...50MPH

Special weather statement, Aug 14, 9:04 PM EDT, 1 hour 12 minutes before

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Special weather statement, Aug 14, 10:16 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
Aug 14, 8:12 PM EDT	Special Weather Statement	FFC	Emanuel	33 min
Aug 14, 8:23 PM EDT	Special Weather Statement	FFC	Hall	37 min
Aug 14, 8:29 PM EDT	Special Weather Statement	FFC	Gwinnett	31 min
Aug 14, 9:04 PM EDT	Special Weather Statement	FFC	Barrow, Walton	26 min
Aug 14, 9:37 PM EDT	Flash Flood Warning	FFC	Gwinnett	4 hr
Aug 15, 4:09 PM EDT	Special Weather Statement	FFC	Lamar, Pike	36 min
Aug 15, 4:17 PM EDT	Special Weather Statement	FFC	Jones	28 min
Aug 15, 4:43 PM EDT	Special Weather Statement	FFC	Baldwin, Jones	32 min
Aug 15, 5:15 PM EDT	Special Weather Statement	FFC	Wilkinson	30 min
Aug 15, 6:33 PM EDT	Special Weather Statement	FFC	Bibb	27 min
Aug 15, 6:46 PM EDT	Special Weather Statement	FFC	Harris	29 min
Aug 15, 6:52 PM EDT	Special Weather Statement	FFC	Houston	23 min
Aug 15, 7:28 PM EDT	Special Weather Statement	FFC	Harris	32 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.