Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

July 16, 2018Union County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 16, 2018, 1:07 PM EDT for Union County, Georgia. It was in force for 38 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 16, 2018, 1:07 PM EDT (17:07 UTC)
Expired
Jul 16, 2018, 1:45 PM EDT
In force
38 min
Issued by
NWS Atlanta, GA
Wind
40

County Union County, GA

The radar

The Atlanta radar (KFFC), 163 km from the middle of the area, began a volume at 17:10 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, 5.1 hours before the alert went out and 160 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 2018-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 842 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 2018-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
842 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
17 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 16, 7:53 AM EDT, 5 hours 14 minutes earlier.

Area forecast discussion, Jul 16, 7:53 AM EDT, 5 hours 14 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>
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        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, Jul 16, 1:00 PM EDT, 7 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
100 PM EDT Mon Jul 16 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-171000-
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-
100 PM EDT Mon Jul 16 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 this afternoon and tonight, most numerous between 3
and midnight, although isolated storms will continue overnight. A
few of these storms could also be strong, producing gusty winds and
occasional lightning. However, the main hazard from the
thunderstorms will be locally heavy rainfall. The heavy rain could
cause temporary street flooding and ponding of water in low lying
areas.

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

Scattered to numerous thunderstorms are expected Tuesday through
Sunday, mainly in the afternoon and evening hours each day. A few
strong to severe thunderstorms will be possible each day with strong,
gusty winds, frequent lightning, and very 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, Jul 16, 1:07 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
107 PM EDT MON JUL 16 2018

GAZ006-008-161745-
Union GA-Fannin GA-
107 PM EDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR UNION AND NORTHEASTERN FANNIN
COUNTIES UNTIL 145 PM EDT...

At 107 PM EDT...a strong thunderstorm was over Hurst, or 9 miles east
of Blue Ridge...moving east at 15 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
Blairsville, Suches, Dial, Hemp, Owltown, Margret, Vogel State Park,
Hurst, Jones Creek, Woods Hole Shelter, Gaddistown and Blood Mountain
Shelter.

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 3488 8388 3474 8393 3474 8395 3472 8398
      3468 8399 3467 8403 3464 8404 3473 8426
      3475 8428 3492 8421
TIME...MOT...LOC 1707Z 286DEG 12KT 3481 8416

WIND...40MPH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 9:02 PM EDTSpecial Weather StatementFFCHaralson28 min
Jul 15, 9:22 PM EDTSpecial Weather StatementFFCPaulding38 min
Jul 15, 9:27 PM EDTSpecial Weather StatementFFCHaralson33 min
Jul 15, 9:49 PM EDTSpecial Weather StatementFFCDouglas26 min
Jul 15, 10:08 PM EDTSpecial Weather StatementFFCHaralson, Paulding37 min
Jul 15, 10:16 PM EDTSpecial Weather StatementFFCDouglas29 min
Jul 15, 10:55 PM EDTSpecial Weather StatementFFCCobb35 min
Jul 16, 12:16 AM EDTSpecial Weather StatementFFCDawson, Lumpkin59 min
Jul 16, 12:20 AM EDTSpecial Weather StatementFFCDeKalb, Forsyth55 min
Jul 16, 1:10 AM EDTSpecial Weather StatementFFCDawson, Lumpkin80 min
Jul 16, 1:44 AM EDTRiver Flood WarningFFCFulton, Gwinnett2 hr
Jul 16, 1:37 PM EDTSpecial Weather StatementFFCWhitfield38 min
Jul 16, 1:39 PM EDTSpecial Weather StatementFFCUnion36 min
Jul 16, 2:11 PM EDTSpecial Weather StatementFFCGordon49 min
Jul 16, 2:15 PM EDTSpecial Weather StatementFFCCobb30 min
Jul 16, 2:32 PM EDTSpecial Weather StatementFFCGwinnett28 min
Jul 16, 2:51 PM EDTSpecial Weather StatementFFCBarrow24 min
Jul 16, 3:01 PM EDTSpecial Weather StatementFFCGwinnett29 min
Jul 16, 3:16 PM EDTSpecial Weather StatementFFCBarrow, Gwinnett, Walton29 min
Jul 16, 3:23 PM EDTSpecial Weather StatementFFCCatoosa37 min
Jul 16, 3:30 PM EDTSpecial Weather StatementFFCGwinnett30 min
Jul 16, 3:46 PM EDTSpecial Weather StatementFFCBarrow29 min
Jul 16, 4:12 PM EDTSpecial Weather StatementFFCRockdale33 min
Jul 16, 4:47 PM EDTSpecial Weather StatementFFCMontgomery, Toombs28 min
Jul 16, 5:00 PM EDTSpecial Weather StatementFFCWheeler30 min
Jul 16, 5:21 PM EDTSpecial Weather StatementFFCMontgomery24 min
Jul 16, 6:45 PM EDTSpecial Weather StatementFFCCarroll30 min
Jul 16, 7:21 PM EDTSpecial Weather StatementFFCCarroll24 min
Jul 16, 7:45 PM EDTSpecial Weather StatementFFCCarroll30 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.