Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Atlanta, GA

April 24, 202110 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 24, 2021, 8:36 PM EDT for 10 counties in Georgia. It was in force for 39 min. 9 reports 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 24, 2021, 8:36 PM EDT (00:36 UTC)
Expired
Apr 24, 2021, 9:15 PM EDT
In force
39 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Clayton County, GA, Coweta County, GA, DeKalb County, GA, Fayette County, GA, Gwinnett County, GA, Henry County, GA, Newton County, GA, Rockdale County, GA, Spalding County, GA, Walton County, GA

The radar

The Atlanta radar (KFFC), 56 km from the middle of the area, began a volume at 00:39 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.

What was reported inside it

TimeReportWhereRemark
Apr 24, 8:43 PM EDTTSTM WND GST 434 Nnw Senoia, GAASOS STATION KFFC PEACHTREE CITY.
Apr 24, 8:50 PM EDTTSTM WND DMG2 Nnw Richardson Park, GATHE EMERGENCY MANAGER REPORTED TREES DOWN AT THREE SEPARATE LOCATIONS ON FAIRVIEW ROAD.
Apr 24, 8:55 PM EDTTSTM WND DMG1 Nnw Morrow, GATHE PUBLIC REPORTED SEVERAL TREES SNAPPED 10 TO 15 FEET OFF OF THE GROUND ALONG GRACELAND CIR.
Apr 24, 8:55 PM EDTTSTM WND DMG2 S Conyers, GATHE EMERGENCY MANAGER REPORTED TREES DOWN ON THE SOUTHWEST SIDE OF CONYERS: LOCH LOMMOND DRIVE, EBENEZER ROAD, AND SUGARMAPLE DRIVE. ADDITIONAL TREES AND POWERLINES WERE REPORTED DOWN AT INTERSECTION OF OLD SALEM ROAD AND LAMBETH WAY, NORTHLAKE DRIVE, AND GA H
Apr 24, 8:55 PM EDTTSTM WND DMG2 Sw Lakeview Estates, GATHE EMERGENCY MANAGER REPORTED NUMEROUS TREES AND POWERLINES DOWN ACROSS THE NORTHERN PORTION OF ROCKDALE COUNTY, EXTENDING FROM APPROXIMATELY 2 MILES NNW OF LAKEVIEW ESTATES TO 6.5 MILES NE OF CONYERS. REPORTS INCLUDED, BUT WERE NOT LIMITED TO: BONDS LAKE RD,
Apr 24, 8:55 PM EDTTSTM WND DMG2 Sw Lakeview Estates, GATHE EMERGENCY MANAGER REPORTED TREES DOWN ON TUCKER MILL ROAD AND TROUPE SMITH ROAD, AND POWERLINES DOWN ON WINDY HILL ROAD.
Apr 24, 9:00 PM EDTTSTM WND DMG2 E Centerville, GAA TREE AND POWER LINES WERE DOWNED IN THE 4000 BLOCK OF SUMMER PLACE.
Apr 24, 9:03 PM EDTTSTM WND DMG1 Wnw Rosebud, GATREES AND POWER LINES WERE DOWNED IN THE 2700 BLOCK OF LENORA ROAD SW.
Apr 24, 9:10 PM EDTTSTM WND GST 491 Wsw Conyers, GAMESONET STATION GA329 I-20 AT KLONDIKE WEST AVE.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 24, 5:52 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.6 hours before the alert went out and 50 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 2021-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 72 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 00:00Z on 2021-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 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
72 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

533 
WUUS52 KFFC 250036
SVRFFC
GAC063-077-089-113-135-151-217-247-255-297-250115-
/O.NEW.KFFC.SV.W.0049.210425T0036Z-210425T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
836 PM EDT Sat Apr 24 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Central Spalding County in west central Georgia...
  Rockdale County in north central Georgia...
  Southern DeKalb County in north central Georgia...
  Fayette County in north central Georgia...
  Southern Gwinnett County in north central Georgia...
  Henry County in north central Georgia...
  Walton County in north central Georgia...
  Southeastern Coweta County in west central Georgia...
  Clayton County in north central Georgia...
  Northwestern Newton County in north central Georgia...

* Until 915 PM EDT.

* At 835 PM EDT, severe thunderstorms were located along a line
  extending from Mountain Park to near Thomas Crossroads, moving east
  at 50 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Griffin, McDonough, Fayetteville, Conyers, Monroe, Covington,
  Jonesboro, Peachtree City, Stockbridge, Forest Park, Snellville,
  Riverdale, Lilburn, Loganville, Hampton, Morrow, Lovejoy, Stone
  Mountain, Senoia and Avondale Estates.

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 3335 8461 3391 8414 3391 8377 3389 8376
      3391 8366 3389 8363 3388 8358 3384 8356
      3325 8426 3322 8450 3323 8468
TIME...MOT...LOC 0035Z 265DEG 43KT 3387 8412 3337 8472 

HAIL...1.00IN
WIND...70MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 8:07 PM EDTSevere Thunderstorm WarningFFCClayton, Cobb, Coweta, DeKalb, Douglas, Fayette and 4 more53 min
Apr 24, 8:20 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Heard, Meriwether, Troup40 min
Apr 24, 8:25 PM EDTSpecial Weather StatementFFCForsyth35 min
Apr 24, 8:59 PM EDTSpecial Weather StatementFFCMeriwether, Pike, Troup31 min
Apr 24, 9:03 PM EDTSevere Thunderstorm WarningFFCButts, Gwinnett, Henry, Jasper, Monroe, Morgan and 5 more42 min
Apr 24, 9:28 PM EDTSpecial Weather StatementFFCHarris, Lamar, Pike, Talbot, Upson32 min
Apr 24, 9:36 PM EDTSevere Thunderstorm WarningFFCClarke, Greene, Jasper, Morgan, Oconee, Oglethorpe and 1 more39 min
Apr 24, 9:57 PM EDTSpecial Weather StatementFFCMonroe33 min
Apr 24, 10:08 PM EDTSpecial Weather StatementFFCHancock, Oglethorpe, Taliaferro, Warren, Wilkes37 min
Apr 24, 10:18 PM EDTSpecial Weather StatementFFCJones27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2021Every severe thunderstorm warning in 2021

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.