Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 6, NWS Atlanta, GA

March 31, 2015Carroll County, Coweta County, Heard County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 31, 2015, 5:33 PM EDT for Carroll County, Coweta County, Heard County, Georgia. It was in force for 42 min. 3 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
Mar 31, 2015, 5:33 PM EDT (21:33 UTC)
Expired
Mar 31, 2015, 6:15 PM EDT
In force
42 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Carroll County, GA, Coweta County, GA, Heard County, GA

The radar

The Atlanta radar (KFFC), 32 km from the middle of the area, began a volume at 21:35 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 31, 5:57 PM EDTHAIL 0.883 Wsw Plant Yates, GANICKEL SIZED HAIL NEAR MCINTOSH RESERVE PARK.
Mar 31, 5:58 PM EDTHAIL 0.753 E Newnan, GADIME SIZED HAIL IN IN SUMMERGROVE NEIGHBORHOOD.
Mar 31, 6:22 PM EDTHAIL 1Newnan, GAQUARTER SIZE HAIL REPORTED IN NEWNAN. REPORT FROM SOCIAL MEDIA.

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
Mar 31, 2:22 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.6 hours before the alert went out and 38 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 2015-03-31Temperature 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 2015-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 169 square meters per square second.19395878Sfc1 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
1726 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
169 m²/s²
0-3 km storm-relative helicity
180 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.

849 
WUUS52 KFFC 312133
SVRFFC
GAC045-077-149-312215-
/O.NEW.KFFC.SV.W.0006.150331T2133Z-150331T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
533 PM EDT TUE MAR 31 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN HEARD COUNTY IN WEST CENTRAL GEORGIA...
  COWETA COUNTY IN WEST CENTRAL GEORGIA...
  SOUTHWESTERN CARROLL COUNTY IN NORTHWESTERN GEORGIA...

* UNTIL 615 PM EDT

* AT 533 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS IN
  EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ROOPVILLE...OR 10
  MILES SOUTH OF CARROLLTON...AND MOVING SOUTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  NEWNAN...GRANTVILLE...LUTHERSVILLE...WHITESBURG...CENTRALHATCHEE...
  MORELAND...ROOPVILLE...EAST NEWNAN...LOWELL...POWERS CROSSROADS...
  TYUS...PLANT WANSLEY...THOMAS CROSSROADS...HANDY...ARNCO-SARGENT...
  MADRAS AND PLANT YATES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

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 3353 8523 3348 8490 3342 8462 3341 8462
      3322 8474 3322 8485 3319 8485 3319 8486
      3322 8486 3322 8491 3347 8527
TIME...MOT...LOC 2133Z 293DEG 32KT 3343 8507 

$$
1 follow-up statement
692 
WWUS52 KFFC 312203
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
603 PM EDT TUE MAR 31 2015

GAC045-149-312211-
/O.CAN.KFFC.SV.W.0006.000000T0000Z-150331T2215Z/
HEARD GA-CARROLL GA-
603 PM EDT TUE MAR 31 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HEARD AND
SOUTHWESTERN CARROLL COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA.THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3344 8498 3346 8498 3344 8495 3344 8494
      3345 8492 3347 8491 3348 8489 3342 8462
      3341 8462 3322 8474 3341 8499 3341 8501
      3343 8501
TIME...MOT...LOC 2201Z 293DEG 32KT 3339 8485 

$$

GAC077-312215-
/O.CON.KFFC.SV.W.0006.000000T0000Z-150331T2215Z/
COWETA GA-
603 PM EDT TUE MAR 31 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR CENTRAL COWETA COUNTY...

AT 601 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 
MPH. THIS STORM WAS LOCATED OVER NEWNAN. THIS STORM WAS MOVING 
SOUTHEAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
NEWNAN...LUTHERSVILLE...MORELAND...EAST NEWNAN...MADRAS...PLANT
YATES...THOMAS CROSSROADS AND ARNCO-SARGENT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

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 3344 8498 3346 8498 3344 8495 3344 8494
      3345 8492 3347 8491 3348 8489 3342 8462
      3341 8462 3322 8474 3341 8499 3341 8501
      3343 8501
TIME...MOT...LOC 2201Z 293DEG 32KT 3339 8485 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 2:47 PM EDTSpecial Weather StatementFFCHarris, Talbot28 min
Mar 31, 2:50 PM EDTSpecial Weather StatementFFCSchley25 min
Mar 31, 3:39 PM EDTSpecial Weather StatementFFCTroup21 min
Mar 31, 3:42 PM EDTSevere Thunderstorm WarningFFCCrisp, Dooly48 min
Mar 31, 3:45 PM EDTSevere Thunderstorm WarningFFCMeriwether, Troup45 min
Mar 31, 4:23 PM EDTSpecial Weather StatementFFCCrisp37 min
Mar 31, 4:30 PM EDTSpecial Weather StatementFFCTalbot30 min
Mar 31, 4:32 PM EDTSpecial Weather StatementFFCTalbot28 min
Mar 31, 4:52 PM EDTSevere Thunderstorm WarningFFCMeriwether, Talbot, Taylor, Upson33 min
Mar 31, 5:14 PM EDTSpecial Weather StatementFFCCarroll, Coweta31 min
Mar 31, 5:15 PM EDTSpecial Weather StatementFFCCarroll, Coweta30 min
Mar 31, 5:43 PM EDTSpecial Weather StatementFFCButts, Jasper32 min
Mar 31, 6:09 PM EDTSevere Thunderstorm WarningFFCClayton, Coweta, Fayette, Spalding51 min
Mar 31, 6:24 PM EDTSpecial Weather StatementFFCEmanuel, Treutlen36 min
Mar 31, 6:30 PM EDTSevere Thunderstorm WarningFFCClayton, Coweta, Fayette30 min
Mar 31, 6:36 PM EDTSpecial Weather StatementFFCJones24 min
Mar 31, 6:43 PM EDTSevere Thunderstorm WarningFFCHeard, Troup47 min
Mar 31, 6:48 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Lamar, Meriwether, Pike, Spalding42 min
Mar 31, 6:57 PM EDTSpecial Weather StatementFFCUpson33 min
Mar 31, 7:20 PM EDTSevere Thunderstorm WarningFFCMeriwether, Pike, Upson40 min
Mar 31, 7:35 PM EDTSpecial Weather StatementFFCCrawford, Monroe25 min
Mar 31, 7:51 PM EDTSevere Thunderstorm WarningFFCLamar, Monroe, Pike, Upson39 min
Mar 31, 7:56 PM EDTSpecial Weather StatementFFCFannin, Union34 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015Every severe thunderstorm warning in 2015

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.