Alert archive / Georgia / Special Weather Statements in 2019

Special Weather Statement, NWS Atlanta, GA

August 20, 2019Marion County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 20, 2019, 3:59 PM EDT for Marion County, Georgia. It was in force for 31 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 20, 2019, 3:59 PM EDT (19:59 UTC)
Expired: Aug 20, 2019, 4:30 PM EDT
In force: 31 min
Issued by: NWS Atlanta, GA
Hail: 0.75 in
Wind: 50

County Marion County, GA

The radar

The Robins AFB radar (KJGX), 103 km from the middle of the area, began a volume at 19:59 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, 8.0 hours before the alert went out and 108 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 409 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 647 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 76 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 20, 2:46 PM EDT, 1 hour 13 minutes earlier.

Area forecast discussion, Aug 20, 2:46 PM EDT, 1 hour 13 minutes before

Area Forecast Discussion
National Weather Service Peachtree City GA
246 PM EDT Tue Aug 20 2019

.SHORT TERM /Tonight through Wednesday Night/...
Widespread severe weather is not expected today, but marginally
strong to a few severe storms are possible today as diurnally-driven
convection fires. Weak upper level trough remains situated over the
area, and the surface low feature will continue to provide a focus
for storm development. This low will move northeastward over the
Carolinas into Wednesday, with drier westerly flow setting up behind
it.

Models continue to show highest storm chances over the southern and
eastern portions of the CWA, with gusty winds and frequent lightning
as main concerns. Additionally, with high precipitable water values,
brief heavy downpours can be expected with the strong or slow-moving
storms, and a quickly accumulating 1-2 inches or more are possible.

Rain chances are not quite as high Wednesday with the absence of
better moisture, but have continued to forecast good chance
thunderstorms for the peak heating period.

High temperatures Wednesday are slightly higher than today, with
most of the area back in the 90s. Heat Index values will largely be
under 100, with a few patchy areas just above 100.

31

.LONG TERM /Thursday through Tuesday/...
Only tweaks to the long term based on the latest guidance.

BDL

PREVIOUS DISCUSSION...
Afternoon and evening scattered to numerous showers and
thunderstorms will continue through the extended periods of the
forecast. The area will remain situated in the weak upper trough
between the ridge over the Plains and western Atlantic ridge.
Moisture continues to slowly increase across the area through the
end of the week which will will provide a boost each afternoon for
convective development. By the end of the week, the models are
showing a cold front pushing south out of the great lake state
Thursday and into North GA Friday. The models show this frontal
boundary stalling across the southeastern U.S. and keeping rain
chances across the region through the end of the forecast period.
By Sat/Sun a wedge of high pressure builds down the eastern
seaboard and keeps things rainy and cool for this time of year.
Looking at temps in the 70s and 80s across north and central GA.

01

&&

.AVIATION...
18Z Update...
Storms already developing this afternoon, and timing for TEMPO is
still generally 18-00z depending on the TAF site. Activity
expected to diminish overnight, with returning rain chances after
19z Wednesday. Low clouds should be patchy at best, and have only
overnight VFR cig conditions at TAF sites. SCT CU will develop
after 14z. Winds will shift to the west over the next few hours,
then stay west through the day Wednesday. Speeds will be 10kt or
less, except in/near convection.

//ATL Confidence...18Z Update...
High on wind speed and direction.
Medium on all other elements.

31

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          71  91  71  91 /  40  40  30  40
Atlanta         73  91  73  90 /  40  40  30  50
Blairsville     66  83  66  83 /  40  50  40  60
Cartersville    71  92  71  92 /  40  40  30  60
Columbus        73  93  73  92 /  30  30  20  50
Gainesville     71  89  71  89 /  40  50  30  60
Macon           71  92  72  93 /  30  30  20  40
Rome            72  92  72  92 /  30  40  30  60
Peachtree City  71  93  72  92 /  40  30  20  50
Vidalia         73  92  73  93 /  30  40  30  30

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...31
LONG TERM....BDL
AVIATION...31

Hazardous weather outlook, Aug 20, 5:15 AM EDT, 10 hours 44 minutes before

Hazardous Weather Outlook
National Weather Service Peachtree City GA
515 AM EDT Tue Aug 20 2019

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-210915-
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-
515 AM EDT Tue Aug 20 2019

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

.DAY ONE...Today and Tonight...

Scattered to numerous thunderstorms are expected across much
of north and central Georgia this afternoon into tonight.
Gusty winds, frequent lightning and locally heavy rainfall
are possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday...

Scattered to numerous thunderstorms are expected across much of north
and central Georgia through the week, mainly in the afternoon and
evening. A few storms could be strong to marginally severe with
gusty winds, frequent lightning and locally 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

Local storm report, Aug 20, 12:42 PM EDT, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1242 PM EDT TUE AUG 20 2019

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

0242 PM     TSTM WND DMG     2 ESE RANGER            34.49N  84.68W
08/19/2019                   GORDON             GA   EMERGENCY MNGR

            TREE REPORTED DOWN ON POWERLINES NEAR PITTMAN RD. AND
            HWY 411

&&

EVENT NUMBER FFC1900692

NM

Local storm report, Aug 20, 1:04 PM EDT, 2 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
104 PM EDT TUE AUG 20 2019

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

0300 PM     TSTM WND DMG     1 SW SONORAVILLE        34.43N  84.84W
08/19/2019                   GORDON             GA   EMERGENCY MNGR

            TREE REPORTED DOWN ON POWERLINES NEAR INTERSECTION OF
            ERWIN HILL CHURCH RD SE AND ERWIN HILL RD SE

&&

EVENT NUMBER FFC1900693

NM

Special weather statement, Aug 20, 2:25 PM EDT, 1 hour 34 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
225 PM EDT Tue Aug 20 2019

GAZ092-093-104-105-201900-
Macon GA-Schley GA-Dooly GA-Sumter GA-
225 PM EDT Tue Aug 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN MACON...SOUTHEASTERN
SCHLEY...NORTHWESTERN DOOLY AND NORTHEASTERN SUMTER COUNTIES UNTIL
300 PM EDT...

At 225 PM EDT...a strong thunderstorm was over Clearview, or near
Oglethorpe. 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
Oglethorpe, Montezuma, Byromville, Andersonville, Dooling,
Andersonville National Historic, Clearview, Bumphead, Fountainville,
La Crosse and Pennington.

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 3230 8423 3231 8386 3216 8380 3215 8427
TIME...MOT...LOC 1825Z 351DEG 2KT 3224 8405

WIND...40MPH

Special weather statement, Aug 20, 3:16 PM EDT, 43 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
316 PM EDT Tue Aug 20 2019

GAZ080-081-093-094-201945-
Macon GA-Peach GA-Taylor GA-Crawford GA-
316 PM EDT Tue Aug 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MACON...SOUTHWESTERN
PEACH...SOUTHEASTERN TAYLOR AND SOUTHERN CRAWFORD COUNTIES UNTIL 345
PM EDT...

At 316 PM EDT...a strong thunderstorm was over Potterville, or near
Butler. This storm was nearly stationary.

  HAZARD...40 to 50 mph wind...up to penny sized hail...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
Fort Valley, Marshallville, Reynolds, Nakomis, Lee Pope, Hicks,
Potterville and Garden Valley.

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 3260 8421 3262 8390 3246 8388 3243 8424
TIME...MOT...LOC 1916Z 035DEG 1KT 3254 8414

HAIL...0.75IN
WIND...50MPH

Special weather statement, Aug 20, 3:59 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
359 PM EDT Tue Aug 20 2019

GAZ080-091-092-202030-
Schley GA-Taylor GA-Marion GA-
359 PM EDT Tue Aug 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SCHLEY...
SOUTHWESTERN TAYLOR AND NORTHEASTERN MARION COUNTIES UNTIL 430 PM
EDT...

At 358 PM EDT...a strong thunderstorm was near Charing, or 9 miles
northeast of Buena Vista...moving southeast at 5 mph.

  HAZARD...40 to 50 mph wind...up to penny sized hail...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
Brantley, Rupert, Charing, Tazewell, Oakland and Mauk.

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 3235 8459 3248 8460 3254 8432 3240 8419
      3240 8425 3238 8425 3234 8439
TIME...MOT...LOC 1958Z 336DEG 5KT 3243 8441

HAIL...0.75IN
WIND...50MPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:11 PM EDT	Special Weather Statement	FFC	Morgan	19 min
Aug 19, 8:29 PM EDT	Special Weather Statement	FFC	Jasper	31 min
Aug 19, 11:23 PM EDT	Special Weather Statement	FFC	Troup	37 min
Aug 19, 11:57 PM EDT	Special Weather Statement	FFC	Washington	33 min
Aug 19, 11:58 PM EDT	Special Weather Statement	FFC	Dodge	32 min
Aug 20, 2:25 PM EDT	Special Weather Statement	FFC	Macon	35 min
Aug 20, 3:16 PM EDT	Special Weather Statement	FFC	Macon	29 min
Aug 20, 4:05 PM EDT	Severe Thunderstorm Warning	FFC	Marion, Schley, Taylor	40 min
Aug 20, 4:31 PM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Harris, Marion, Muscogee, Talbot	44 min
Aug 20, 5:07 PM EDT	Special Weather Statement	FFC	Harris	38 min

Nearby

Special Weather Statements in Georgia, 2019 Every special weather statement in 2019

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.