Alert archive / Georgia / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 63, NWS Atlanta, GA

April 9, 20204 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 9, 2020, 5:40 AM EDT for 4 counties in Georgia. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 9, 2020, 5:40 AM EDT (09:40 UTC)
Expired
Apr 9, 2020, 6:12 AM EDT
In force
32 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bibb County, GA, Jones County, GA, Lamar County, GA, Monroe County, GA

The radar

The Robins AFB radar (KJGX), 63 km from the middle of the area, began a volume at 09:43 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.

What was reported inside it

TimeReportWhereRemark
Apr 9, 5:56 AM EDTHAIL 11 W Juliette, GAREPORTS OF QUARTER-SIZED HAIL IN JULIETTE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 9.7 hours before the alert went out and 71 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 00:00Z on 2020-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 845 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2020-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.1939587897117Sfc1 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
845 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted.

411 
WUUS52 KFFC 090940
SVRFFC
GAC021-169-171-207-091030-
/O.NEW.KFFC.SV.W.0063.200409T0940Z-200409T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
540 AM EDT Thu Apr 9 2020

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  North central Bibb County in central Georgia...
  Central Monroe County in central Georgia...
  Central Jones County in central Georgia...
  Northeastern Lamar County in west central Georgia...

* Until 630 AM EDT.

* At 540 AM EDT, a severe thunderstorm was located near Chappel Mill,
  or 8 miles northeast of Barnesville, moving southeast at 50 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Macon, Forsyth, Gray, Postell, Bradley, Bolingbroke, Wayside,
  Goggins, Dames Ferry, Clinton, Jarrell Plantation, High Falls State
  Park, Wesleyan, Arkwright, Collier, Juliette, Johnstonville and
  Plant Scherer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

If you see wind damage...hail or flooding...wait until the storm has
passed...and then call the National Weather Service toll free
at 1 8 6 6 7 6 3 4 4 6 6 or tweet us your report at NWSATLANTA.

&&

LAT...LON 3310 8414 3320 8408 3314 8382 3313 8381
      3314 8379 3308 8352 3292 8346 3285 8371
TIME...MOT...LOC 0940Z 294DEG 45KT 3315 8406 

HAIL...1.00IN
WIND...60MPH
 
$$
3 follow-up statements
535 
WWUS52 KFFC 090950
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
550 AM EDT Thu Apr 9 2020

GAC171-090959-
/O.CAN.KFFC.SV.W.0063.000000T0000Z-200409T1030Z/
Lamar GA-
550 AM EDT Thu Apr 9 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAMAR COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3305 8405 3319 8404 3314 8382 3313 8381
      3314 8378 3308 8352 3292 8346 3285 8371
TIME...MOT...LOC 0949Z 294DEG 45KT 3310 8393 

$$

GAC021-169-207-091030-
/O.CON.KFFC.SV.W.0063.000000T0000Z-200409T1030Z/
Bibb GA-Monroe GA-Jones GA-
550 AM EDT Thu Apr 9 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 AM EDT
FOR NORTH CENTRAL BIBB...CENTRAL MONROE AND CENTRAL JONES COUNTIES...

At 549 AM EDT, a severe thunderstorm was located near Forsyth, moving
southeast at 50 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Macon, Forsyth, Gray, Postell, Bradley, Bolingbroke, Wayside, Dames
Ferry, Clinton, Jarrell Plantation, High Falls State Park, Wesleyan,
Arkwright, Collier, Juliette and Plant Scherer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3305 8405 3319 8404 3314 8382 3313 8381
      3314 8378 3308 8352 3292 8346 3285 8371
TIME...MOT...LOC 0949Z 294DEG 45KT 3310 8393 

HAIL...1.25IN
WIND...60MPH
 
$$
768 
WWUS52 KFFC 091000
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
600 AM EDT Thu Apr 9 2020

GAC021-169-207-091030-
/O.CON.KFFC.SV.W.0063.000000T0000Z-200409T1030Z/
Bibb GA-Monroe GA-Jones GA-
600 AM EDT Thu Apr 9 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 AM EDT
FOR NORTH CENTRAL BIBB...EASTERN MONROE AND CENTRAL JONES COUNTIES...

At 559 AM EDT, a severe thunderstorm was located over Plant Scherer,
or 9 miles east of Forsyth, moving southeast at 50 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Macon, Forsyth, Gray, Postell, Bradley, Bolingbroke, Wayside, Dames
Ferry, Clinton, Jarrell Plantation, Wesleyan, Arkwright, Juliette and
Plant Scherer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3300 8395 3315 8386 3314 8382 3313 8381
      3314 8378 3308 8352 3292 8346 3285 8371
TIME...MOT...LOC 0959Z 294DEG 45KT 3304 8378 

HAIL...1.25IN
WIND...60MPH
 
$$
459 
WWUS52 KFFC 091012
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
612 AM EDT Thu Apr 9 2020

GAC021-169-207-091022-
/O.CAN.KFFC.SV.W.0063.000000T0000Z-200409T1030Z/
Bibb GA-Monroe GA-Jones GA-
612 AM EDT Thu Apr 9 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BIBB...EASTERN
MONROE AND CENTRAL JONES COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3300 8395 3315 8386 3314 8382 3313 8381
      3314 8378 3308 8352 3292 8346 3285 8371
TIME...MOT...LOC 1011Z 294DEG 45KT 3297 8360 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 8:15 PM EDTSevere Thunderstorm WarningFFCToombs19 min
Apr 8, 8:23 PM EDTSpecial Weather StatementFFCTelfair22 min
Apr 9, 1:27 AM EDTSpecial Weather StatementFFCCatoosa, Dade, Walker, Whitfield63 min
Apr 9, 2:31 AM EDTSpecial Weather StatementFFCFannin, Gilmer, Murray, Union29 min
Apr 9, 3:01 AM EDTSpecial Weather StatementFFCTowns, Union, White29 min
Apr 9, 3:18 AM EDTSpecial Weather StatementFFCFloyd27 min
Apr 9, 3:35 AM EDTSpecial Weather StatementFFCBartow, Floyd25 min
Apr 9, 4:00 AM EDTSpecial Weather StatementFFCCobb30 min
Apr 9, 4:11 AM EDTSpecial Weather StatementFFCHaralson, Polk34 min
Apr 9, 4:29 AM EDTSpecial Weather StatementFFCCobb31 min
Apr 9, 4:40 AM EDTSevere Thunderstorm WarningFFCCarroll, Cobb, Douglas, Haralson, Paulding35 min
Apr 9, 5:06 AM EDTSpecial Weather StatementFFCClayton, Douglas24 min
Apr 9, 5:22 AM EDTSpecial Weather StatementFFCLamar, Spalding23 min
Apr 9, 5:51 AM EDTSpecial Weather StatementFFCPutnam24 min
Apr 9, 6:11 AM EDTSpecial Weather StatementFFCJones, Wilkinson34 min
Apr 9, 6:43 AM EDTSpecial Weather StatementFFCJohnson, Wilkinson32 min
Apr 9, 6:54 AM EDTSevere Thunderstorm WarningFFCEmanuel, Johnson40 min
Apr 9, 7:36 AM EDTSpecial Weather StatementFFCEmanuel9 min
Apr 9, 3:08 PM EDTRed Flag WarningFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more29 hr

Nearby

Severe Thunderstorm Warnings in Georgia, 2020Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.