Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

August 29, 2018Chattooga County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 29, 2018, 2:18 PM EDT for Chattooga County, Georgia. It was in force for 27 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 29, 2018, 2:18 PM EDT (18:18 UTC)
Expired
Aug 29, 2018, 2:45 PM EDT
In force
27 min
Issued by
NWS Atlanta, GA
Wind
40

County Chattooga County, GA

The radar

The Northeast Alabama radar (KHTX), 84 km from the middle of the area, began a volume at 18:19 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, 6.3 hours before the alert went out and 148 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2018-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 779 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2018-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
779 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
959 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
-2 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 29, 1:45 PM EDT, 33 minutes earlier.

Area forecast discussion, Aug 29, 1:45 PM EDT, 33 minutes before
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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Aug 29, 2:18 PM EDT, 0 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
218 PM EDT Wed Aug 29 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-301830-
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-
218 PM EDT Wed Aug 29 2018

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

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

Isolated to scattered thunderstorms are expected across north and
central Georgia, most so this afternoon and evening. A few strong
storms will be possible with gusty winds, frequent lightning and
heavy rain.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Scattered to possibly numerous showers and thunderstorms
can be expected across the area. At this time, the threat
for any severe weather is low, however, a few storms
could be strong with gusty winds, frequent lightning and
heavy rainfall.

.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, Aug 29, 9:52 AM EDT, 4 hours 26 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
952 AM EDT WED AUG 29 2018

GAZ005-007-291430-
Gilmer GA-Murray GA-
952 AM EDT WED AUG 29 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GILMER AND
EAST CENTRAL MURRAY COUNTIES UNTIL 1030 AM EDT...

At 950 AM EDT...a strong thunderstorm was near Fort Mountain State
Park, or near Chatsworth. This storm was nearly stationary.

  HAZARD...Heavy rain.

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

Some locations in the path of this storm include
Chatsworth, Eton, Crandall, Conasauga Lake and Fort Mountain State
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LAT...LON 3489 8462 3485 8462 3485 8454 3468 8464
      3475 8480 3492 8472
TIME...MOT...LOC 1350Z 290DEG 4KT 3481 8468
Special weather statement, Aug 29, 2:18 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
218 PM EDT WED AUG 29 2018

GAZ011-019-291845-
Chattooga GA-Floyd GA-
218 PM EDT WED AUG 29 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHATTOOGA AND
NORTHERN FLOYD COUNTIES UNTIL 245 PM EDT...

At 217 PM EDT...a strong thunderstorm was near Trion, or near
Summerville. This storm was nearly stationary.

  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
Summerville, Trion, Lyerly, Subligna, Berryton, Tidings, Armuchee and
James H. Floyd 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. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3459 8537 3458 8535 3459 8535 3459 8512
      3436 8514 3438 8542
TIME...MOT...LOC 1817Z 354DEG 4KT 3453 8525

WIND...40MPH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 8:02 PM EDTSpecial Weather StatementFFCTalbot43 min
Aug 28, 8:08 PM EDTSevere Thunderstorm WarningFFCHarris, Muscogee, Talbot32 min
Aug 29, 9:52 AM EDTSpecial Weather StatementFFCMurray38 min
Aug 29, 2:21 PM EDTSpecial Weather StatementFFCCarroll24 min
Aug 29, 3:02 PM EDTSpecial Weather StatementFFCFulton28 min
Aug 29, 4:05 PM EDTSpecial Weather StatementFFCPolk25 min
Aug 29, 4:08 PM EDTSpecial Weather StatementFFCBartow37 min
Aug 29, 4:13 PM EDTSevere Thunderstorm WarningFFCBartow33 min
Aug 29, 4:37 PM EDTSpecial Weather StatementFFCGordon23 min
Aug 29, 4:48 PM EDTSpecial Weather StatementFFCPolk27 min
Aug 29, 5:00 PM EDTSpecial Weather StatementFFCForsyth30 min
Aug 29, 6:19 PM EDTSpecial Weather StatementFFCDooly26 min
Aug 29, 6:23 PM EDTSpecial Weather StatementFFCMeriwether37 min
Aug 29, 6:46 PM EDTSevere Thunderstorm WarningFFCMeriwether29 min
Aug 29, 6:47 PM EDTSpecial Weather StatementFFCHarris28 min
Aug 29, 7:07 PM EDTSpecial Weather StatementFFCSumter23 min
Aug 29, 7:16 PM EDTSpecial Weather StatementFFCTroup29 min

Nearby

Special Weather Statements in Georgia, 2018Every 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.