Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 152, NWS Atlanta, GA

April 15, 20115 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 15, 2011, 4:54 PM EDT for 5 counties in Georgia. It was in force for 51 min. 8 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 15, 2011, 4:54 PM EDT (20:54 UTC)
Expired
Apr 15, 2011, 5:45 PM EDT
In force
51 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Bartow County, GA, Cherokee County, GA, Gordon County, GA, Murray County, GA, Pickens County, GA

The radar

The Atlanta radar (KFFC), 122 km from the middle of the area, began a volume at 20:57 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 15, 4:57 PM EDTTSTM WND GST 601 E Adairsville, GAOFF DUTY NWS METEOROLOGIST REPORTED 60 MPH WINDS AT EXIT 305 ON I75. THE METEOROLOGIST ALSO REPORTED 4 TREES DOWN.
Apr 15, 4:57 PM EDTHAIL 0.75Calhoun, GA
Apr 15, 4:57 PM EDTHAIL 1.5Adairsville, GAAMATUER RADIO RELAYED A REPORT OF PNIG PONG SIZE HAIL NEAR ADAIRSVILLE.
Apr 15, 5:02 PM EDTTSTM WND DMGAdairsville, GABARTOW COUNTY 911 RELAYED A REPORT OF NUMEROUS TREES DOWN IN THE ADAIRSVILLE AREA.
Apr 15, 5:11 PM EDTTSTM WND DMGFairmount, GAGORDON COUNTY EMA RELAYED A REPORT OF WIDESPREAD TREE DAMAGE ALONG WITH SOME DOWNED POWER LINES IN SOUTHEAST GORDON COUNTY.
Apr 15, 5:15 PM EDTTSTM WND DMGSonoraville, GATREES ON HOUSE AND POWERLINE
Apr 15, 5:15 PM EDTHAIL 1.25Jasper, GA
Apr 15, 5:15 PM EDTHAIL 1.25Sonoraville, GA

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, 8.9 hours before the alert went out and 122 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 2011-04-15Temperature 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 2011-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.193958Sfc1 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
1094 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

731 
WUUS52 KFFC 152054
SVRFFC
GAC015-057-129-213-227-152145-
/O.NEW.KFFC.SV.W.0152.110415T2054Z-110415T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
454 PM EDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  PICKENS COUNTY IN NORTH CENTRAL GEORGIA
  NORTHERN BARTOW COUNTY IN NORTHWEST GEORGIA
  GORDON COUNTY IN NORTHWEST GEORGIA
  SOUTH CENTRAL MURRAY COUNTY IN NORTHWEST GEORGIA

* UNTIL 545 PM EDT

* AT 453 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZED
  HAIL...AND DAMAGING WINDS UP TO 60 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM CALHOUN TO ADAIRSVILLE TO KINGSTON...
  MOVING NORTHEAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CASSVILLE...WHITE...TALKING ROCK AND JASPER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT 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.

&&

LAT...LON 3455 8465 3455 8452 3457 8451 3455 8450
      3457 8448 3455 8446 3456 8435 3452 8433
      3440 8440 3417 8504 3421 8505 3422 8503
      3428 8502 3433 8498 3439 8501 3447 8509
      3470 8466
TIME...MOT...LOC 2054Z 238DEG 42KT 3445 8493 3438 8488
          3427 8497

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 4:12 AM EDTWind AdvisoryFFCBartow, Carroll, Catoosa, Chattooga, Cherokee, Cobb and 18 more16 hr
Apr 15, 5:14 PM EDTTornado WarningFFCGilmer, Gordon, Pickens46 min
Apr 15, 5:52 PM EDTSevere Thunderstorm WarningFFCDawson, Fannin, Gilmer, Pickens23 min
Apr 15, 6:14 PM EDTSevere Thunderstorm WarningFFCDawson, Fannin, Lumpkin, Union46 min
Apr 15, 6:20 PM EDTSevere Thunderstorm WarningFFCGordon, Murray, Whitfield25 min
Apr 15, 6:29 PM EDTSevere Thunderstorm WarningFFCCarroll46 min
Apr 15, 6:35 PM EDTSevere Thunderstorm WarningFFCTowns40 min
Apr 15, 6:38 PM EDTSevere Thunderstorm WarningFFCBartow, Floyd, Gordon52 min
Apr 15, 6:41 PM EDTSevere Thunderstorm WarningFFCFannin, Gilmer, Murray49 min
Apr 15, 6:44 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Fulton, Paulding, Polk46 min
Apr 15, 6:52 PM EDTSevere Thunderstorm WarningFFCCarroll, Douglas, Paulding23 min
Apr 15, 7:07 PM EDTSevere Thunderstorm WarningFFCHarris, Troup38 min
Apr 15, 7:11 PM EDTSevere Thunderstorm WarningFFCCobb, Douglas, Fulton34 min
Apr 15, 7:22 PM EDTTornado WarningFFCHarris, Muscogee38 min
Apr 15, 7:43 PM EDTSevere Thunderstorm WarningFFCCherokee, Cobb, Fulton47 min
Apr 15, 7:51 PM EDTTornado WarningFFCHarris, Meriwether, Talbot39 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011

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.