Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 280, NWS Atlanta, GA

July 22, 2018Bibb County, Jones County, Twiggs County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 22, 2018, 11:13 PM EDT for Bibb County, Jones County, Twiggs County, 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
Jul 22, 2018, 11:13 PM EDT (03:13 UTC)
Expired
Jul 22, 2018, 11:45 PM 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, Twiggs County, GA

The radar

The Robins AFB radar (KJGX), 18 km from the middle of the area, began a volume at 03:17 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
Jul 22, 11:13 PM EDTTSTM WND DMG2 Nne Macon, GAMULTIPLE TREES WERE REPORTED DOWN IN THE AREA AREOUND NOTTINGHAM DRIVE AND TWIN PINES DRIVE.

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, 3.2 hours before the alert went out and 114 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 2018-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1261 joules per kilogram.LCLEL10008507005003002001001 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 2018-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
1261 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1543 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted.

697 
WUUS52 KFFC 230313
SVRFFC
GAC021-169-289-230345-
/O.NEW.KFFC.SV.W.0280.180723T0313Z-180723T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
1113 PM EDT SUN JUL 22 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Eastern Bibb County in central Georgia...
  Twiggs County in central Georgia...
  South central Jones County in central Georgia...

* Until 1145 PM EDT.

* At 1113 PM EDT, a severe thunderstorm was located over Macon,
  moving southeast at 25 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, Jeffersonville, Marion, Rutland, Griswoldville, Fitzpatrick,
  Ripley, Huber, Cross Keys, District Path, Dry Branch, Myricks Mill,
  Skipperton and Franklinton.

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 3275 8372 3292 8364 3286 8338 3270 8329
      3257 8336
TIME...MOT...LOC 0313Z 293DEG 22KT 3282 8364 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
744 
WWUS52 KFFC 230336
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
1136 PM EDT SUN JUL 22 2018

GAC021-169-230346-
/O.CAN.KFFC.SV.W.0280.000000T0000Z-180723T0345Z/
Bibb GA-Jones GA-
1136 PM EDT SUN JUL 22 2018

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BIBB AND SOUTH CENTRAL
JONES COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled. Gusty 
winds are still possible. 

LAT...LON 3269 8360 3276 8355 3281 8349 3282 8350
      3282 8349 3284 8351 3286 8350 3287 8346
      3286 8338 3270 8329 3257 8336
TIME...MOT...LOC 0336Z 293DEG 22KT 3276 8349 

$$

GAC289-230345-
/O.CON.KFFC.SV.W.0280.000000T0000Z-180723T0345Z/
Twiggs GA-
1136 PM EDT SUN JUL 22 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR CENTRAL TWIGGS COUNTY...

At 1136 PM EDT, a severe thunderstorm was located over Dry Branch, or
10 miles northwest of Jeffersonville, moving southeast at 25 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...
Jeffersonville, Marion, District Path, Dry Branch, Myricks Mill,
Fitzpatrick, Ripley and Huber.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3269 8360 3276 8355 3281 8349 3282 8350
      3282 8349 3284 8351 3286 8350 3287 8346
      3286 8338 3270 8329 3257 8336
TIME...MOT...LOC 0336Z 293DEG 22KT 3276 8349 

HAIL...1.00IN
WIND...60MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 9:10 PM EDTSpecial Weather StatementFFCPike, Spalding35 min
Jul 22, 9:33 PM EDTSpecial Weather StatementFFCSpalding27 min
Jul 22, 9:53 PM EDTSpecial Weather StatementFFCButts, Jasper37 min
Jul 22, 10:37 PM EDTSpecial Weather StatementFFCBaldwin, Bibb, Crawford, Jones23 min
Jul 22, 11:01 PM EDTSpecial Weather StatementFFCBaldwin, Bibb, Crawford, Jones29 min
Jul 22, 11:24 PM EDTSpecial Weather StatementFFCHancock36 min
Jul 22, 11:45 PM EDTSpecial Weather StatementFFCBleckley30 min
Jul 22, 11:56 PM EDTSpecial Weather StatementFFCHouston, Macon, Peach34 min
Jul 23, 12:04 AM EDTSpecial Weather StatementFFCWashington, Wilkinson26 min
Jul 23, 12:17 AM EDTSevere Thunderstorm WarningFFCDooly, Macon, Sumter28 min
Jul 23, 12:33 AM EDTSpecial Weather StatementFFCJohnson27 min
Jul 23, 12:38 AM EDTSpecial Weather StatementFFCBleckley, Houston, Pulaski22 min
Jul 23, 12:48 AM EDTSpecial Weather StatementFFCDooly27 min
Jul 23, 1:06 AM EDTSevere Thunderstorm WarningFFCCrisp, Dooly, Sumter24 min
Jul 23, 1:19 AM EDTSpecial Weather StatementFFCDodge, Pulaski, Wilcox26 min
Jul 23, 1:30 AM EDTSevere Thunderstorm WarningFFCDodge, Pulaski, Wilcox30 min
Jul 23, 4:45 PM EDTSpecial Weather StatementFFCMadison30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2018Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.