Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

July 15, 2018Dade County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 15, 2018, 2:56 PM EDT for Dade County, Georgia. It was in force for 49 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 15, 2018, 2:56 PM EDT (18:56 UTC)
Expired
Jul 15, 2018, 3:45 PM EDT
In force
49 min
Issued by
NWS Atlanta, GA

County Dade County, GA

The radar

The Northeast Alabama radar (KHTX), 63 km from the middle of the area, began a volume at 18:58 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

Nashville Metro, TN (KBNA), launched 12:00Z, 6.9 hours before the alert went out and 180 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, Nashville Metro, TN at 12:00Z on 2018-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1419 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, Nashville Metro, TN at 12:00Z on 2018-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
1419 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
978 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
70 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 15, 1:40 PM EDT, 1 hour 16 minutes earlier.

Area forecast discussion, Jul 15, 1:40 PM EDT, 1 hour 16 minutes before
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</head>
<body>
  <main class="wrap">
    <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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Jul 15, 1:30 PM EDT, 1 hour 26 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
130 PM EDT Sun Jul 15 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-161000-
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-
130 PM EDT Sun Jul 15 2018

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

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

Scattered to numerous thunderstorms are expected across north and
central Georgia through tonight, most numerous between 2 and 10 PM.
A few storms could become strong to severe with damaging wind,
frequent lightning, and very heavy rainfall which could cause
flooding in poor drainage areas and isolated areas of flash flooding
near creeks and streams.
.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

Scattered to numerous thunderstorms are expected Monday through
Saturday, mainly in the afternoon and evening. A few strong to
severe thunderstorms will be possible each day with strong, gusty
winds, frequent lightning, very heavy rainfall and localized
flooding.

.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, Jul 15, 2:56 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
256 PM EDT SUN JUL 15 2018

GAZ001-002-011-151945-
Chattooga GA-Walker GA-Dade GA-
256 PM EDT SUN JUL 15 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN CHATTOOGA...WESTERN
WALKER AND DADE COUNTIES UNTIL 345 PM EDT...

At 256 PM EDT...a line of strong thunderstorms was along a line
extending from Wildwood to Stephensville to near Mentone. These
storms 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
Chattanooga, Trenton, Rossville, Lookout Mountain, Rising Fawn,
Wildwood, Stephensville, Cloudland, Chattanooga  Valley, New England,
Morganville, Cloudland Canyon State Park, Hooker, Fairview and East
Ridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LAT...LON 3496 8527 3486 8540 3449 8543 3452 8551
      3492 8559 3499 8545 3499 8526
TIME...MOT...LOC 1856Z 296DEG 3KT 3498 8539 3489 8553 3455 8556

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 8:00 PM EDTSpecial Weather StatementFFCBibb, Bleckley, Dodge30 min
Jul 14, 8:14 PM EDTFlash Flood WarningFFCCoweta, Meriwether3 hr
Jul 14, 8:28 PM EDTSpecial Weather StatementFFCMeriwether32 min
Jul 14, 8:31 PM EDTSpecial Weather StatementFFCBibb, Bleckley, Laurens, Twiggs29 min
Jul 14, 8:58 PM EDTSpecial Weather StatementFFCBibb, Twiggs32 min
Jul 14, 9:28 PM EDTSpecial Weather StatementFFCTwiggs32 min
Jul 15, 3:00 PM EDTSpecial Weather StatementFFCWilcox45 min
Jul 15, 4:40 PM EDTSpecial Weather StatementFFCWheeler35 min
Jul 15, 5:11 PM EDTSpecial Weather StatementFFCWheeler34 min
Jul 15, 5:38 PM EDTSpecial Weather StatementFFCBleckley37 min
Jul 15, 5:44 PM EDTSpecial Weather StatementFFCLaurens31 min
Jul 15, 5:46 PM EDTSpecial Weather StatementFFCJeff Davis29 min
Jul 15, 5:50 PM EDTSpecial Weather StatementFFCDooly25 min
Jul 15, 6:13 PM EDTSpecial Weather StatementFFCBleckley32 min
Jul 15, 6:15 PM EDTSpecial Weather StatementFFCDooly30 min
Jul 15, 6:26 PM EDTSpecial Weather StatementFFCChattahoochee34 min
Jul 15, 6:48 PM EDTSpecial Weather StatementFFCHouston27 min
Jul 15, 6:53 PM EDTSpecial Weather StatementFFCMarion37 min
Jul 15, 6:58 PM EDTSpecial Weather StatementFFCMontgomery32 min
Jul 15, 7:06 PM EDTSpecial Weather StatementFFCChattahoochee24 min
Jul 15, 7:15 PM EDTSpecial Weather StatementFFCPeach30 min
Jul 15, 7:29 PM EDTSpecial Weather StatementFFCMarion31 min
Jul 15, 7:43 PM EDTSpecial Weather StatementFFCCrawford, Peach32 min
Jul 15, 7:57 PM EDTSpecial Weather StatementFFCChattahoochee33 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.