Alert archive / Georgia / Special Weather Statements in 2016

Special Weather Statement, NWS Atlanta, GA

August 16, 2016Gwinnett County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 16, 2016, 1:14 PM EDT for Gwinnett County, Georgia. It was in force for 46 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 16, 2016, 1:14 PM EDT (17:14 UTC)
Expired
Aug 16, 2016, 2:00 PM EDT
In force
46 min
Issued by
NWS Atlanta, GA

County Gwinnett County, GA

The radar

The Atlanta radar (KFFC), 77 km from the middle of the area, began a volume at 17:15 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, 5.2 hours before the alert went out and 72 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 2016-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1604 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 2016-08-16The 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
1604 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
856 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
42 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 16, 10:08 AM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, Aug 16, 10:08 AM EDT, 3 hours 6 minutes before
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</head>
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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, Aug 16, 5:55 AM EDT, 7 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
555 AM EDT TUE AUG 16 2016

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-
555 AM EDT TUE AUG 16 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH AND CENTRAL GEORGIA.

.DAY ONE...TODAY AND TONIGHT...
ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS NORTH AND
CENTRAL GEORGIA THROUGH THIS EVENING.

WEATHER HAZARDS EXPECTED...
GUSTY WINDS...HEAVY RAIN...AND FREQUENT LIGHTNING ARE POSSIBLE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...
THERE IS A CHANCE OF THUNDERSTORMS EACH DAY. THE BEST CHANCES FOR
STORMS SHIFTS TO NORTH GEORGIA AS A FRONT SLOWLY SAGS TOWARD THE
STATE WEDNESDAY NIGHT. SOME OF THE STORMS WILL PRODUCE GUSTY
WINDS AND FREQUENT LIGHTNING. VERY HEAVY RAIN CAN ALSO BE EXPECTED
THAT COULD CAUSE MINOR FLOODING OF CREEKS AND STREAMS THURSDAY
THROUGH THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED THROUGH TONIGHT.

In the hours before

Special weather statement, Aug 16, 1:11 PM EDT, 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
111 PM EDT TUE AUG 16 2016

GAZ046-055-057-161800-
HENRY GA-CLAYTON GA-ROCKDALE GA-
111 PM EDT TUE AUG 16 2016

...SIGNIFICANT WEATHER ADVISORY FOR HENRY...EASTERN CLAYTON AND
SOUTHWESTERN ROCKDALE COUNTIES UNTIL 200 PM EDT...

AT 110 PM EDT...A STRONG THUNDERSTORM WAS AROUND STOCKBRIDGE AND
MCDONOUGH. THIS STORM WAS NEARLY STATIONARY.

  HAZARD...UP TO 40 MPH WIND...FREQUENT CLOUD TO GROUND LIGHTNING
           AND HEAVY RAIN.

  IMPACT...PEOPLE OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY. EXPECT
           MINOR DAMAGE TO TREE LIMBS AND BLOWING AROUND OF LIGHT...
           UNSECURED OBJECTS. LIGHTNING IS ONE OF NATURE'S LEADING
           KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE
           CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. 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. ALSO...THE HEAVY
           RAIN MAY CAUSE TEMPORARY STREET FLOODING OR ROAD PONDING
           IN SLOW DRAINAGE AREAS.

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
MCDONOUGH...JONESBORO...STOCKBRIDGE...FOREST PARK...HAMPTON...
MORROW...LOVEJOY...LOCUST GROVE...LAKE CITY...ATLANTA MOTOR
SPEEDWAY...EAGLES LANDING...BONANZA...HIDDEN VALLEY PARK...
FLIPPEN...RICHARDSON PARK...BLACKSVILLE...REX...KELLEYTOWN...LAKE
SPIVEY AND ELLENWOOD.

LAT...LON 3364 8432 3363 8424 3363 8412 3362 8411
      3362 8405 3335 8411 3338 8438
TIME...MOT...LOC 1710Z 192DEG 3KT 3347 8423
Special weather statement, Aug 16, 1:14 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
114 PM EDT TUE AUG 16 2016

GAZ034-047-161800-
GWINNETT GA-WALTON GA-
114 PM EDT TUE AUG 16 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN GWINNETT AND
NORTHWESTERN WALTON COUNTIES UNTIL 200 PM EDT...

AT 114 PM EDT...A STRONG THUNDERSTORM WAS NEAR SNELLVILLE. THIS
STORM WAS NEARLY STATIONARY.

  HAZARD...UP TO 40 MPH WIND...FREQUENT CLOUD TO GROUND LIGHTNING
           AND HEAVY RAIN.

  IMPACT...PEOPLE OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY. EXPECT
           MINOR DAMAGE TO TREE LIMBS AND BLOWING AROUND OF LIGHT...
           UNSECURED OBJECTS. LIGHTNING IS ONE OF NATURE'S LEADING
           KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE
           CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. 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. ALSO...THE HEAVY
           RAIN MAY CAUSE TEMPORARY STREET FLOODING OR ROAD PONDING
           IN SLOW DRAINAGE AREAS.

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
LAWRENCEVILLE...SNELLVILLE...LOGANVILLE...GRAYSON...ROSEBUD AND
WINDSOR.

LAT...LON 3387 8382 3377 8394 3377 8396 3379 8398
      3378 8400 3379 8407 3394 8412 3395 8396
TIME...MOT...LOC 1714Z 192DEG 2KT 3383 8399

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 1:11 PM EDTSpecial Weather StatementFFCHenry49 min
Aug 16, 2:07 PM EDTSpecial Weather StatementFFCFulton38 min
Aug 16, 2:15 PM EDTSpecial Weather StatementFFCJones45 min
Aug 16, 2:18 PM EDTSpecial Weather StatementFFCRockdale42 min
Aug 16, 2:38 PM EDTSpecial Weather StatementFFCGwinnett37 min
Aug 16, 2:40 PM EDTSpecial Weather StatementFFCFayette50 min
Aug 16, 2:50 PM EDTSpecial Weather StatementFFCPike, Spalding40 min
Aug 16, 3:05 PM EDTSpecial Weather StatementFFCForsyth40 min
Aug 16, 3:08 PM EDTSpecial Weather StatementFFCNewton, Rockdale37 min
Aug 16, 3:11 PM EDTSpecial Weather StatementFFCFayette49 min
Aug 16, 3:26 PM EDTSpecial Weather StatementFFCBarrow49 min
Aug 16, 3:46 PM EDTSpecial Weather StatementFFCMeriwether44 min
Aug 16, 3:49 PM EDTSpecial Weather StatementFFCNewton, Rockdale41 min
Aug 16, 4:09 PM EDTSpecial Weather StatementFFCBarrow, Hall, Walton51 min
Aug 16, 4:25 PM EDTSpecial Weather StatementFFCMeriwether50 min
Aug 16, 4:27 PM EDTSpecial Weather StatementFFCWalton48 min
Aug 16, 4:30 PM EDTSpecial Weather StatementFFCTalbot45 min
Aug 16, 4:55 PM EDTSpecial Weather StatementFFCHall, Jackson50 min
Aug 16, 4:57 PM EDTSpecial Weather StatementFFCMorgan48 min
Aug 16, 5:19 PM EDTSpecial Weather StatementFFCTroup41 min
Aug 16, 6:00 PM EDTSpecial Weather StatementFFCTowns45 min
Aug 16, 7:22 PM EDTSpecial Weather StatementFFCFloyd38 min

Nearby

Special Weather Statements in Georgia, 2016Every special weather statement in 2016

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.