Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Atlanta, GA

January 11, 20204 counties in Georgia

NWS Atlanta, GA issued this special weather statement at Jan 11, 2020, 6:49 PM EST for 4 counties in Georgia. It was in force for 41 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: Jan 11, 2020, 6:49 PM EST (23:49 UTC)
Expired: Jan 11, 2020, 7:30 PM EST
In force: 41 min
Issued by: NWS Atlanta, GA
Wind: 50

Counties Baldwin County, GA, Jasper County, GA, Jones County, GA, Putnam County, GA

The radar

The Robins AFB radar (KJGX), 57 km from the middle of the area, began a volume at 23:50 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, 11.8 hours before the alert went out and 89 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: 13 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 557 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 417 m²/s²
0-3 km storm-relative helicity: 450 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 Jan 11, 2:47 PM EST, 4 hours 2 minutes earlier.

Area forecast discussion, Jan 11, 2:47 PM EST, 4 hours 2 minutes before

Area Forecast Discussion
National Weather Service Peachtree City GA
247 PM EST Sat Jan 11 2020

.SHORT TERM /Tonight through Sunday Night/...
Current Radar loop shows the line of showers and thunderstorms
moving across Alabama and should begin pushing into NW GA by 3-4pm.
Just ahead of this line of storms is strong Southwesterly warm air
advection and dewpoints in the mid to upper 60s across GA. The
models are also showing Perceptible waters in the 1.5 to 1.8 inch
range. A strong low-level jet at 850 mb is contributing to very
strong low-level shear (40-50 kts) and 0-1 km helicity values of 200-
400 m2/s2. Southerly 0-6 km Bulk shear of 60-70 kts is also occurring
and is oriented nearly parallel to the system. I said all this to
say these values are abnormally high for this time of year and the
atmosphere is primed for some severe storms to move in this
afternoon/evening.

The main surface low is centered right along the AR/TN/MS border and
is still expected to move rapidly NE into the eastern Great Lake
states by 12z Sun. The cold front moves into NW GA this evening with
the line of severe storms just ahead of it. Showers have already
developed across the state but the severe storms will make their way
into NW GA by 3-4pm. This line is expected to continue pushing SE
through tonight. It should sweep through the Metro ATL area between 5-
9pm and through MCN and CSG between 6-10pm. Damaging wind gusts and
brief tornadoes embedded within the line will be the primary severe
weather hazards. The highest likelihood of severe weather is
expected in the western portion of the forecast area in the closest
vicinity to the low-level jet, where shear values will be the
greatest.

A brief period of cool, rain-free conditions can be expected on
Sunday morning across north Georgia after the passage of the cold
front to the south and east. However, this respite will be short-
lived as the front will stall across south Georgia as it orients
itself parallel to the southwesterly flow aloft and begin to retreat
back to the north as a warm front during the daytime Sunday.
Isentropic lift to the north of the frontal boundary will lead to
scattered showers with some isolated thunderstorms gradually
developing northward through the area during the afternoon hours on
Sunday and continuing through Monday.

01

.LONG TERM /Monday through Saturday/...
Unsettled weather will persist for much of the long term portion of
the forecast. No major changes were needed.

Old frontal boundary remains stalled across portions of the CWA into
the middle of next week. This boundary will serve to focus rounds of
rainfall, some heavy at times. Currently, the axis if heaviest
rainfall is mainly along and north of the Interstate 20 corridor and
this has some run to run consistency. On average, one to three
inches of rainfall is progged, but some locally higher amounts are
possible in the higher elevations of NE GA.

A cold front is on track to move through later on Wednesday, with
high pressure briefly building back in for Thursday into early
Friday.

The other story (besides the additional rains) will be the
temperatures. Values around 20 degrees above normal are likely for
the first half of the week.

NListemaa

&&

.AVIATION... 18Z Update... Showers over the are now with the
frontal system moving in this evening/tonight. Looking for
thunderstorms to affect the ATL area TAF sites between 23z Sat and
02z Sunday. looking for gusty winds in the 25-35kt range with
periods of heavy rain and lightning. Once the front pushes through
winds will turn to the SW then W through daybreak Sunday. Wind
speeds will also diminish to 10kt or less after 06z Sun. VSBYs
will be mainly in the MVFR to IFR range until the frontal passage.
after it goes through VFR VSBYs will prevail.

//ATL Confidence...18Z Update...
Confidence medium to high on all elements.

01

&&

.PRELIMINARY POINT TEMPS/POPS...
Athens          51  67  56  68 /  90  40  60  80
Atlanta         50  66  56  67 /  90  30  50  80
Blairsville     44  64  49  64 / 100  20  30  60
Cartersville    47  65  52  67 /  90  20  40  70
Columbus        52  70  60  73 /  90  40  70  70
Gainesville     49  65  54  65 / 100  30  40  70
Macon           56  69  61  74 /  80  50  60  70
Rome            47  64  49  66 /  80  20  30  60
Peachtree City  48  68  56  69 /  90  40  60  80
Vidalia         65  72  63  80 /  60  40  40  60

&&

.FFC WATCHES/WARNINGS/ADVISORIES...
Wind Advisory until 10 PM EST this evening for the following
zones: Baldwin...Banks...Barrow...Bartow...Bibb...Bleckley...
Butts...Carroll...Chattahoochee...Cherokee...Clarke...Clayton...
Cobb...Coweta...Crawford...Crisp...DeKalb...Dodge...Dooly...
Douglas...Emanuel...Fayette...Forsyth...Glascock...Greene...
Gwinnett...Hall...Hancock...Haralson...Harris...Heard...Henry...
Houston...Jackson...Jasper...Jefferson...Johnson...Jones...
Lamar...Laurens...Macon...Madison...Marion...Meriwether...
Monroe...Montgomery...Morgan...Muscogee...Newton...North
Fulton...Oconee...Oglethorpe...Paulding...Peach...Pike...Polk...
Pulaski...Putnam...Rockdale...Schley...South Fulton...Spalding...
Stewart...Sumter...Talbot...Taliaferro...Taylor...Telfair...
Toombs...Treutlen...Troup...Twiggs...Upson...Walton...Warren...
Washington...Webster...Wheeler...Wilcox...Wilkes...Wilkinson.

Tornado Watch until 9 PM EST this evening for the following
zones: Bartow...Carroll...Catoosa...Chattahoochee...Chattooga...
Cherokee...Clayton...Cobb...Coweta...Dade...Dawson...DeKalb...
Douglas...Fannin...Fayette...Floyd...Forsyth...Gilmer...Gordon...
Gwinnett...Hall...Haralson...Harris...Heard...Lumpkin...Marion...
Meriwether...Murray...Muscogee...North Fulton...Paulding...
Pickens...Polk...South Fulton...Stewart...Talbot...Towns...
Troup...Union...Walker...Webster...White...Whitfield.

High Wind Warning until 10 PM EST this evening for the following
zones: Catoosa...Chattooga...Dade...Dawson...Fannin...Floyd...
Gilmer...Gordon...Lumpkin...Murray...Pickens...Towns...Union...
Walker...White...Whitfield.

&&

SHORT TERM...01
LONG TERM....NListemaa
AVIATION...01

Hazardous weather outlook, Jan 11, 10:20 AM EST, 8 hours 29 minutes before

Hazardous Weather Outlook...Updated
National Weather Service Peachtree City GA
1020 AM EST Sat Jan 11 2020

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
089>098-102>113-121030-
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-
1020 AM EST Sat Jan 11 2020

This Hazardous Weather Outlook is for North and Central Georgia.

.DAY ONE...This afternoon and Tonight...

A line of showers and thunderstorms will move across north and
central Georgia later this afternoon into this evening. Some storms
will likely be strong to severe, especially over west-central and
northwest Georgia. The primary storm threats continue to be damaging
wind gusts in excess of 60 mph along with the potential for a few
tornadoes.

In addition, strong winds ahead of this storm system will occur
through the day. Wind gusts greater than 45 MPH at times in the
higher elevations of north Georgia could bring down trees and
powerlines. A High Wind Warning is now in effect for parts of north
Georgia, generally north of a Rome to Jasper line.

As the storms move through later today and tonight, a period of
heavy rain could result in localized flooding. The severe threat
should end west to east this evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday...

Showers and a few thunderstorms will persist over central Georgia on
Sunday, developing again across the entire area by Monday. Heavy
rainfall could again lead to flooding concerns as soils will be
saturated from previous rains. Showers and thunderstorms will
persist into Friday with possibly a brief break on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely later this afternoon into this evening.

DJN

In the hours before

Local storm report, Jan 11, 6:30 PM EST, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
630 PM EST SAT JAN 11 2020

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

0517 PM     TSTM WND DMG     1 S JASPER              34.45N  84.43W
01/11/2020                   PICKENS            GA   AMATEUR RADIO

            TREES WERE REPORTED DOWN ALONG HIGHWAY 12 IN JASPER GA.
            TIME INDICATED BY RADAR.

&&

EVENT NUMBER FFC2000013

TV

Local storm report, Jan 11, 6:36 PM EST, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
636 PM EST SAT JAN 11 2020

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

0521 PM     TSTM WND DMG     2 NNW HIRAM             33.90N  84.77W
01/11/2020                   PAULDING           GA   PUBLIC

            TREES WERE REPORTED DOWN NEAR THE INTERSECTION OF
            HIGHLAND FALLS AND HIGHWAY 278 NEAR HIRAM GA. TIME
            INDICATED BY RADAR.

&&

EVENT NUMBER FFC2000014

TV

Special weather statement, Jan 11, 6:45 PM EST, 4 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
645 PM EST Sat Jan 11 2020

GAZ024-025-027-036>038-047>050-120030-
Madison GA-Morgan GA-Banks GA-Jackson GA-Walton GA-Oglethorpe GA-
Clarke GA-Greene GA-Oconee GA-Newton GA-
645 PM EST Sat Jan 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR MADISON...MORGAN...SOUTHEASTERN
BANKS...SOUTHEASTERN JACKSON...EASTERN WALTON...OGLETHORPE...
CLARKE...GREENE...OCONEE AND EASTERN NEWTON COUNTIES UNTIL 730 PM
EST...

At 644 PM EST...a line of strong thunderstorms was along a line
extending from near Banks Crossing to Bear Creek Reservoir to
Eastville to near Farrar...and moving east at 50 mph.

  HAZARD...40 to 50 mph wind 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 these storms include
Commerce, Madison, Greensboro, Watkinsville, Danielsville, Lexington,
Athens, Arcade, Nicholson, Union Point, Comer, Winterville, Bogart,
Crawford, Rutledge, Newborn, North High Shoals, Colbert, Bostwick and
Arnoldsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. Motorists should
slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3430 8338 3424 8334 3426 8330 3424 8317
      3427 8312 3423 8308 3417 8310 3415 8306
      3404 8297 3345 8306 3344 8326 3348 8329
      3344 8354 3353 8368 3349 8369 3350 8369
      3378 8368 3393 8361 3397 8354 3402 8356
TIME...MOT...LOC 2344Z 248DEG 42KT 3430 8338 3397 8350 3387 8352 3345
8360

WIND...50MPH

Local storm report, Jan 11, 6:47 PM EST, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
647 PM EST SAT JAN 11 2020

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

0459 PM     TSTM WND DMG     1 N CHAPEL HILL         33.71N  84.72W
01/11/2020                   DOUGLAS            GA   EMERGENCY MNGR

            A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF
            CHAPEN HILL AND WINDING TRAIL DR. TIME INDICATED BY
            RADAR.

&&

EVENT NUMBER FFC2000015

TV

Local storm report, Jan 11, 6:49 PM EST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
649 PM EST SAT JAN 11 2020

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

0500 PM     TSTM WND DMG     1 NW DOUGLASVILLE       33.76N  84.77W
01/11/2020                   DOUGLAS            GA   EMERGENCY MNGR

            TREES WERE REPORTED DOWN NEAR THE INTERSECTION OF CAVE
            SPRINGS RD AND WOODCREEK. TIME IS INDICATED BY RADAR.

&&

EVENT NUMBER FFC2000016

TV

Special weather statement, Jan 11, 6:49 PM EST, 0 minutes before

Special Weather Statement
National Weather Service Peachtree City GA
649 PM EST Sat Jan 11 2020

GAZ049-050-059>061-072-073-120030-
Morgan GA-Putnam GA-Baldwin GA-Hancock GA-Jones GA-Jasper GA-
Greene GA-
649 PM EST Sat Jan 11 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MORGAN...PUTNAM...
WESTERN BALDWIN...WESTERN HANCOCK...JONES...JASPER AND SOUTHERN
GREENE COUNTIES UNTIL 730 PM EST...

At 648 PM EST...a line of strong thunderstorms was along a line
extending from near Farrar to near Arkwright...and moving east at 40
mph.

  HAZARD...40 to 50 mph wind 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 these storms include
Milledgeville, Eatonton, Gray, Monticello, Newborn, Shady Dale,
Phoenix, Reynolds at Lake Oconee, Midway-Hardwick, Meriwether,
Postell, Bradley, Wayside, Allenwood, Mountain Springs,
Griswoldville, Resseaus Crossroads, Round Oak, Central Georgia
Experiment Stn and Plant Harlee Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. Motorists should
slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3297 8327 3285 8351 3298 8372 3300 8372
      3301 8373 3302 8372 3304 8374 3350 8371
      3348 8368 3352 8369 3345 8319
TIME...MOT...LOC 2348Z 263DEG 35KT 3349 8361 3296 8366

WIND...50MPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 11, 10:28 AM EST	High Wind Warning	FFC	Catoosa, Chattooga, Dade, Dawson, Fannin, Floyd and 10 more	11 hr
Jan 11, 3:00 PM EST	Severe Thunderstorm Warning	FFC	Catoosa, Chattooga, Dade, Floyd, Walker, Whitfield	45 min
Jan 11, 3:42 PM EST	Severe Thunderstorm Warning	FFC	Bartow, Catoosa, Chattooga, Floyd, Gordon, Murray and 2 more	48 min
Jan 11, 3:53 PM EST	Severe Thunderstorm Warning	FFC	Carroll, Haralson, Polk	52 min
Jan 11, 4:16 PM EST	Severe Thunderstorm Warning	FFC	Carroll, Heard	44 min
Jan 11, 4:19 PM EST	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Fannin, Gilmer, Gordon, Murray and 3 more	41 min
Jan 11, 4:47 PM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Coweta, Harris, Heard, Meriwether, Muscogee and 2 more	43 min
Jan 11, 4:51 PM EST	Severe Thunderstorm Warning	FFC	Bartow, Carroll, Cherokee, Clayton, Cobb, Douglas and 2 more	39 min
Jan 11, 4:53 PM EST	Severe Thunderstorm Warning	FFC	Dawson, Fannin, Gilmer, Lumpkin, Pickens, Union	52 min
Jan 11, 5:02 PM EST	Tornado Warning	FFC	Harris, Muscogee	28 min
Jan 11, 5:24 PM EST	Severe Thunderstorm Warning	FFC	Clayton, DeKalb, Fayette, Forsyth, Fulton, Gwinnett and 1 more	51 min
Jan 11, 5:27 PM EST	Severe Thunderstorm Warning	FFC	Dawson, Hall, Lumpkin, Towns, Union, White	48 min
Jan 11, 5:29 PM EST	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Harris, Henry, Lamar and 5 more	46 min
Jan 11, 5:34 PM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Marion, Stewart, Talbot	41 min
Jan 11, 5:57 PM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Marion, Stewart, Webster	48 min
Jan 11, 6:08 PM EST	Severe Thunderstorm Warning	FFC	Crawford, Lamar, Monroe, Taylor, Upson	52 min
Jan 11, 6:10 PM EST	Severe Thunderstorm Warning	FFC	Banks, Barrow, Gwinnett, Hall, Jackson, Walton	50 min
Jan 11, 6:12 PM EST	Severe Thunderstorm Warning	FFC	Butts, DeKalb, Henry, Jasper, Newton, Rockdale and 2 more	48 min
Jan 11, 6:17 PM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Marion, Taylor	43 min
Jan 11, 6:41 PM EST	Severe Thunderstorm Warning	FFC	Macon, Marion, Schley, Sumter, Taylor, Webster	34 min
Jan 11, 6:45 PM EST	Special Weather Statement	FFC	Clarke, Greene, Madison, Morgan, Oconee, Oglethorpe	45 min
Jan 11, 6:52 PM EST	Severe Thunderstorm Warning	FFC	Jasper, Morgan, Putnam	38 min
Jan 11, 6:58 PM EST	Severe Thunderstorm Warning	FFC	Bibb, Crawford, Houston, Peach, Taylor, Twiggs	47 min

Nearby

Special Weather Statements in Georgia, 2020 Every special weather statement in 2020

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.