Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Atlanta, GA

March 17, 20214 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 17, 2021, 6:07 PM EDT for 4 counties in Georgia. It was in force for 38 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 17, 2021, 6:07 PM EDT (22:07 UTC)
Expired
Mar 17, 2021, 6:45 PM EDT
In force
38 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Dooly County, GA, Macon County, GA, Schley County, GA, Sumter County, GA

The radar

The Robins AFB radar (KJGX), 99 km from the middle of the area, began a volume at 22:10 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 17, 6:13 PM EDTHAIL 13 Ssw Shiloh, GAHAIL UP TO A QUARTER SIZED IN DIAMETER WAS REPORTED ALONG HWY 30 IN BETWEEN BUCHANAN RD AND YOUNGS MILL RD.

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, 10.1 hours before the alert went out and 138 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 2021-03-17Temperature 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°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 2021-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
466 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

594 
WUUS52 KFFC 172207
SVRFFC
GAC093-193-249-261-172245-
/O.NEW.KFFC.SV.W.0007.210317T2207Z-210317T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
607 PM EDT Wed Mar 17 2021

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern Macon County in west central Georgia...
  Northwestern Dooly County in central Georgia...
  Southeastern Schley County in west central Georgia...
  Northern Sumter County in west central Georgia...

* Until 645 PM EDT.

* At 607 PM EDT, a severe thunderstorm was located over Shiloh, or
  near Americus, moving east at 30 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...
  Americus, Ellaville, Oglethorpe, Montezuma, Andersonville, New Era,
  Fountainville, Flint River Wma, La Crosse, Pennington,
  Andersonville National Historic, Clearview, Methvins, Bumphead and
  Bartlett.

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 3201 8436 3212 8443 3236 8419 3230 8395
      3213 8396
TIME...MOT...LOC 2207Z 247DEG 28KT 3213 8432 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
651 
WWUS52 KFFC 172233
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
633 PM EDT Wed Mar 17 2021

GAC093-193-249-261-172245-
/O.CON.KFFC.SV.W.0007.000000T0000Z-210317T2245Z/
Macon GA-Dooly GA-Schley GA-Sumter GA-
633 PM EDT Wed Mar 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHWESTERN MACON...NORTHWESTERN DOOLY...SOUTHEASTERN SCHLEY AND
NORTHEASTERN SUMTER COUNTIES...

At 633 PM EDT, a severe thunderstorm was located over Andersonville
National Historic, or near Oglethorpe, moving northeast at 30 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...
Americus, Ellaville, Oglethorpe, Montezuma, Andersonville, New Era,
Fountainville, Flint River Wma, La Crosse, Pennington, Andersonville
National Historic, Clearview, Methvins, Bumphead and Bartlett.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3206 8420 3220 8435 3236 8419 3230 8395
      3213 8396
TIME...MOT...LOC 2233Z 247DEG 28KT 3221 8410 

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

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 16, 8:41 PM EDTSpecial Weather StatementFFCBibb, Twiggs, Wilkinson34 min
Mar 16, 9:47 PM EDTRiver Flood WarningFFCGordon, Murray, Whitfield5 days
Mar 17, 2:22 AM EDTDense Fog AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more9 hr
Mar 17, 2:36 PM EDTRiver Flood WarningFFCWhitfield4 days
Mar 17, 3:21 PM EDTRiver Flood WarningFFCCatoosa62 hr
Mar 17, 4:45 PM EDTSpecial Weather StatementFFCDade30 min
Mar 17, 5:26 PM EDTSpecial Weather StatementFFCSchley, Webster34 min
Mar 17, 5:41 PM EDTSevere Thunderstorm WarningFFCMarion, Schley, Sumter, Webster34 min
Mar 17, 5:51 PM EDTFlash Flood WatchFFCBartow, Catoosa, Chattooga, Cherokee, Dade, Fannin and 8 more14 hr
Mar 17, 6:47 PM EDTSpecial Weather StatementFFCMacon28 min
Mar 17, 7:45 PM EDTSpecial Weather StatementFFCHouston, Twiggs30 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.