Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 13, NWS Atlanta, GA

March 25, 20214 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 25, 2021, 1:04 PM EDT for 4 counties in Georgia. It was in force for 26 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
Mar 25, 2021, 1:04 PM EDT (17:04 UTC)
Expired
Mar 25, 2021, 1:30 PM EDT
In force
26 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Cherokee County, GA, Cobb County, GA, Forsyth County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 86 km from the middle of the area, began a volume at 17:07 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
Mar 25, 1:15 PM EDTHAIL 12 Se Acworth, GAQUARTER-SIZED HAIL WAS REPORTED ON MCEVER PARK CIRCLE.

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 12:00Z, 5.1 hours before the alert went out and 83 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 12:00Z on 2021-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2021-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 397 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1602 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
397 m²/s²
0-3 km storm-relative helicity
647 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

343 
WUUS52 KFFC 251704
SVRFFC
GAC057-067-117-121-251730-
/O.NEW.KFFC.SV.W.0013.210325T1704Z-210325T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
104 PM EDT Thu Mar 25 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southern Cherokee County in north central Georgia...
  Western Forsyth County in north central Georgia...
  Northern Cobb County in north central Georgia...
  Northeastern Fulton County in north central Georgia...

* Until 130 PM EDT.

* At 104 PM EDT, a severe thunderstorm was located near Emerson, or
  near Cartersville, moving east at 70 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...
  Marietta, Canton, Cumming, Sandy Springs, Roswell, Johns Creek,
  Alpharetta, Milton, Kennesaw, Duluth, Woodstock, Acworth, Holly
  Springs, Free Home, Buffington, Hickory Flat, Drew, Kellogg Creek,
  Brookwood and Hightower.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 900 PM EDT for northwestern
Georgia.

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 3432 8417 3409 8411 3407 8412 3405 8410
      3403 8412 3403 8416 3401 8418 3396 8472
      3408 8468 3408 8466 3423 8465
TIME...MOT...LOC 1704Z 257DEG 62KT 3408 8473 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 25, 6:01 AM EDTSpecial Weather StatementFFCHarris14 min
Mar 25, 6:23 AM EDTSpecial Weather StatementFFCHarris37 min
Mar 25, 6:53 AM EDTSpecial Weather StatementFFCMeriwether, Pike, Troup37 min
Mar 25, 10:37 AM EDTSevere Thunderstorm WarningFFCCatoosa, Chattooga, Dade, Walker, Whitfield53 min
Mar 25, 11:19 AM EDTSpecial Weather StatementFFCGordon, Murray, Whitfield41 min
Mar 25, 11:46 AM EDTFlash Flood WarningFFCCatoosa, Chattooga, Dade, Walker, Whitfield10 hr
Mar 25, 12:00 PM EDTSpecial Weather StatementFFCFannin, Gilmer, Murray30 min
Mar 25, 12:02 PM EDTSpecial Weather StatementFFCFloyd, Polk28 min
Mar 25, 12:17 PM EDTRiver Flood WarningFFCDade31 hr
Mar 25, 12:21 PM EDTSevere Thunderstorm WarningFFCFloyd, Haralson, Polk24 min
Mar 25, 12:41 PM EDTSevere Thunderstorm WarningFFCBartow, Cobb, Floyd, Paulding, Polk49 min
Mar 25, 1:09 PM EDTSpecial Weather StatementFFCTowns, Union36 min
Mar 25, 1:30 PM EDTSevere Thunderstorm WarningFFCBarrow, Cherokee, Cobb, Forsyth, Fulton, Gwinnett and 2 more45 min
Mar 25, 2:03 PM EDTSpecial Weather StatementFFCChattooga, Floyd, Gordon, Polk42 min
Mar 25, 2:13 PM EDTSpecial Weather StatementFFCBanks, Hall47 min
Mar 25, 2:42 PM EDTRiver Flood WarningFFCCatoosa43 hr
Mar 25, 2:48 PM EDTSpecial Weather StatementFFCBartow, Polk27 min
Mar 25, 2:50 PM EDTTornado WarningFFCBanks, Jackson, Madison11 min
Mar 25, 3:07 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Paulding, Polk38 min
Mar 25, 3:28 PM EDTFlash Flood WarningFFCBartow, Chattooga, Floyd, Gordon, Polk13 hr
Mar 25, 3:38 PM EDTSpecial Weather StatementFFCCherokee, Forsyth37 min
Mar 25, 4:18 PM EDTTornado Warning Tornado observedFFCFloyd, Polk57 min
Mar 25, 4:49 PM EDTRiver Flood WarningFFCChattooga35 hr
Mar 25, 4:59 PM EDTTornado WarningFFCBartow, Floyd46 min
Mar 25, 5:34 PM EDTFlash Flood WarningFFCFannin, Gilmer, Murray, Towns, Union, Whitfield10 hr
Mar 25, 5:37 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Pickens38 min
Mar 25, 6:41 PM EDTSpecial Weather StatementFFCWhitfield34 min
Mar 25, 7:25 PM EDTSpecial Weather StatementFFCBartow35 min
Mar 25, 7:37 PM EDTRiver Flood WarningFFCWhitfield4 days
Mar 25, 7:45 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Fulton, Paulding45 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.