Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

August 1, 2018Twiggs County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 1, 2018, 1:36 PM EDT for Twiggs County, Georgia. It was in force for 39 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 1, 2018, 1:36 PM EDT (17:36 UTC)
Expired
Aug 1, 2018, 2:15 PM EDT
In force
39 min
Issued by
NWS Atlanta, GA

County Twiggs County, GA

The radar

The Robins AFB radar (KJGX), 12 km from the middle of the area, began a volume at 17:39 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, 5.6 hours before the alert went out and 124 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 2018-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 764 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 2018-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 square meters per square second.193958Sfc1 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
764 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
464 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

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 1, 11:41 AM EDT, 1 hour 55 minutes earlier.

Area forecast discussion, Aug 1, 11:41 AM EDT, 1 hour 55 minutes before
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Hazardous weather outlook, Aug 1, 11:55 AM EDT, 1 hour 41 minutes before
Hazardous Weather Outlook
National Weather Service Peachtree City GA
1155 AM EDT Wed Aug 1 2018

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-021000-
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-
1155 AM EDT Wed Aug 1 2018

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

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

A Flash Flood Watch remains in effect through tonight. Flooding will
be the primary weather hazard today, but a few strong storms, or an
isolated severe thunderstorm, cannot be ruled out.

The potential for localized flooding is high, especially in urban
centers, low lying areas and poor drainage areas where moderate to
heavy rain persists for extended periods of time. Any strong
thunderstorm that develops will be capable of producing damaging
wind gusts. As soils become more saturated, even a sub-severe
thunderstorm can down trees.

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

The Flash Flood Watch remains in effect through 8 AM Friday.
Scattered to numerous showers and thunderstorms are expected each
day with the heaviest rainfall expected through Thursday night.

.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

Local storm report, Aug 1, 10:10 AM EDT, 3 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1010 AM EDT WED AUG 01 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0915 PM     FLASH FLOOD      2 ESE GARFIELD          32.64N  82.07W
07/29/2018                   EMANUEL            GA   FIRE DEPT/RESCUE

            *** 2 INJ *** FIRE CHIEF REPORTED FAILURE OF A SMALL
            DAM, WASHING OUT A 20 FOOT SECTION OF GRAY MULE FARM
            ROAD NEAR JOHNSON GAY ROAD IN GARFIELD. TWO PEOPLE WERE
            INJURED, ONE SERIOUSLY, WHEN A TRUCK ENCOUNTERED THE
            WASHED OUT SECTION OF THE ROAD.

&&

EVENT NUMBER FFC1800755

BELANGER
Local storm report, Aug 1, 11:22 AM EDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1122 AM EDT WED AUG 01 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0738 PM     LIGHTNING        2 W WASHINGTON          33.74N  82.77W
06/15/2018                   WILKES             GA   EMERGENCY MNGR

            *** 1 INJ *** A WOMAN WAS STRUCK BY LIGHTNING AT A
            RESIDENCE ON LINCOLN CIRCLE IN WASHINGTON. EMERGENCY
            MANAGER REPORTED THAT SHE WAS NEAR AN OPEN WINDOW AT THE
            TIME OF THE STRIKE. SHE WAS TRASPORTED TO A LOCAL
            HOSPITAL FOR TREATMENT.

&&

EVENT NUMBER FFC1800756

BELANGER
Special weather statement, Aug 1, 1:36 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Peachtree City GA
136 PM EDT WED AUG 1 2018

GAZ072-082-083-095-011815-
Bibb GA-Houston GA-Jones GA-Twiggs GA-
136 PM EDT WED AUG 1 2018

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN BIBB...NORTHEASTERN
HOUSTON...SOUTHEASTERN JONES AND TWIGGS COUNTIES UNTIL 215 PM EDT...

At 136 PM EDT...a strong thunderstorm was over Bullard, or 9 miles
southwest of Jeffersonville...moving north at 25 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 this storm include
Macon, Jeffersonville, Warner Robins, Centerville, Robins Air Force
Base, Marion, Tarversville, Postell, Bullard, Rutland, Mountain
Springs, Griswoldville, Fitzpatrick, Ripley, Huber, Cross Keys,
District Path, Dry Branch, Myricks Mill and Elberta.

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 3248 8366 3289 8367 3296 8350 3289 8340
      3283 8337 3266 8336 3250 8339 3250 8341
      3249 8341 3247 8345
TIME...MOT...LOC 1736Z 183DEG 22KT 3263 8349

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 8:17 PM EDTFlash Flood WarningFFCPolk58 min
Aug 1, 1:41 AM EDTRiver Flood WarningFFCGwinnett10 hr
Aug 1, 2:15 PM EDTSpecial Weather StatementFFCBaldwin45 min
Aug 1, 2:48 PM EDTSpecial Weather StatementFFCToombs42 min
Aug 1, 4:03 PM EDTSpecial Weather StatementFFCJefferson27 min
Aug 1, 4:12 PM EDTSpecial Weather StatementFFCMadison33 min
Aug 1, 4:32 PM EDTSpecial Weather StatementFFCJefferson13 min
Aug 1, 7:18 PM EDTSpecial Weather StatementFFCOglethorpe, Taliaferro, Wilkes42 min
Aug 1, 7:21 PM EDTSpecial Weather StatementFFCOconee, Walton39 min
Aug 1, 7:24 PM EDTTornado WarningFFCMorgan, Newton, Walton36 min
Aug 1, 7:46 PM EDTRiver Flood WarningFFCGwinnett3 hr
Aug 1, 7:58 PM EDTSpecial Weather StatementFFCClarke, Oconee47 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.