Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 248, NWS Atlanta, GA

July 6, 2012Floyd County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 6, 2012, 8:16 PM EDT for Floyd County, Georgia. It was in force for 44 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
Jul 6, 2012, 8:16 PM EDT (00:16 UTC)
Expired
Jul 6, 2012, 9:00 PM EDT
In force
44 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

County Floyd County, GA

The radar

The Atlanta radar (KFFC), 112 km from the middle of the area, began a volume at 00:16 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
Jul 6, 8:30 PM EDTTSTM WND DMG5 Sse Rome, GAEMERGENCY MANAGER REPORTS 15 TREES DOWN ON THE SOUTHSIDE OF ROME NEAR THE SILVER CREEK AREA INCLUDING PLEASANT VALLEY ROAD.

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 00:00Z, 0.3 hours before the alert went out and 115 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 2012-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 366 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2012-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
366 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
2130 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
93 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.

046 
WUUS52 KFFC 070016
SVRFFC
GAC115-070100-
/O.NEW.KFFC.SV.W.0248.120707T0016Z-120707T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
816 PM EDT FRI JUL 6 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN FLOYD COUNTY IN NORTHWEST GEORGIA

* UNTIL 900 PM EDT

* AT 811 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED NEAR ROME...
  MOVING WEST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CAVE
  SPRING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3427 8510 3412 8508 3408 8542 3428 8546
TIME...MOT...LOC 0016Z 073DEG 12KT 3419 8519

$$
2 follow-up statements
117 
WWUS52 KFFC 070033
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
833 PM EDT FRI JUL 6 2012

GAC115-070100-
/O.CON.KFFC.SV.W.0248.000000T0000Z-120707T0100Z/
FLOYD GA-
833 PM EDT FRI JUL 6 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR CENTRAL FLOYD COUNTY...

AT 830 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP
TO 60 MPH. THIS STORM WAS LOCATED NEAR LINDALE...MOVING WEST AT 15
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COOSA
AND CAVE SPRING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3409 8536 3426 8541 3427 8510 3412 8508
TIME...MOT...LOC 0033Z 071DEG 12KT 3416 8525

$$
123 
WWUS52 KFFC 070053
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
853 PM EDT FRI JUL 6 2012

GAC115-070100-
/O.EXP.KFFC.SV.W.0248.000000T0000Z-120707T0100Z/
FLOYD GA-
853 PM EDT FRI JUL 6 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FLOYD COUNTY WILL BE 
ALLOWED TO EXPIRE AT 900 PM EDT...

AT 848 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A STRONG TO SEVERE THUNDERSTORM CAPABLE OF PRODUCING 
DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR CAVE 
SPRING...MOVING WEST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS
OF THE INDICATED COUNTY.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

LAT...LON 3409 8536 3426 8541 3427 8510 3412 8508
TIME...MOT...LOC 0050Z 071DEG 12KT 3414 8531

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 8:06 PM EDTSpecial Weather StatementFFCFloyd24 min
Jul 6, 8:07 PM EDTSpecial Weather StatementFFCPaulding23 min
Jul 6, 8:34 PM EDTSpecial Weather StatementFFCCoweta41 min
Jul 6, 8:35 PM EDTSpecial Weather StatementFFCCobb25 min
Jul 6, 8:49 PM EDTSpecial Weather StatementFFCCrawford41 min
Jul 6, 8:56 PM EDTSpecial Weather StatementFFCPolk34 min
Jul 6, 9:03 PM EDTSpecial Weather StatementFFCMeriwether42 min
Jul 6, 9:53 PM EDTSpecial Weather StatementFFCHeard52 min
Jul 6, 10:51 PM EDTSpecial Weather StatementFFCTroup39 min
Jul 6, 10:53 PM EDTSevere Thunderstorm WarningFFCHarris, Troup52 min
Jul 6, 11:52 PM EDTSpecial Weather StatementFFCMuscogee38 min
Jul 7, 2:09 AM EDTSpecial Weather StatementFFCMacon36 min
Jul 7, 2:53 AM EDTSpecial Weather StatementFFCMarion, Schley52 min
Jul 7, 5:29 PM EDTSpecial Weather StatementFFCBarrow31 min
Jul 7, 5:58 PM EDTSpecial Weather StatementFFCGwinnett32 min
Jul 7, 6:26 PM EDTSpecial Weather StatementFFCCherokee34 min
Jul 7, 6:36 PM EDTSpecial Weather StatementFFCFloyd24 min
Jul 7, 7:00 PM EDTSpecial Weather StatementFFCPickens30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012Every severe thunderstorm warning in 2012

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.