Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 100, NWS Atlanta, GA

May 6, 2012Fannin County, Union County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 6, 2012, 8:02 PM EDT for Fannin County, Union County, Georgia. It was in force for 28 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
May 6, 2012, 8:02 PM EDT (00:02 UTC)
Expired
May 6, 2012, 8:30 PM EDT
In force
28 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Fannin County, GA, Union County, GA

The radar

The Atlanta radar (KFFC), 157 km from the middle of the area, began a volume at 00:06 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
May 6, 8:06 PM EDTHAIL 0.56 E Morganton, GAHALF INCH HAIL REPORTED NEAR MORGANTON.

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, 0.0 hours before the alert went out and 155 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 2012-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 632 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2012-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
632 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1817 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
-4 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.

238 
WUUS52 KFFC 070002
SVRFFC
GAC111-291-070030-
/O.NEW.KFFC.SV.W.0100.120507T0002Z-120507T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
802 PM EDT SUN MAY 6 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN FANNIN COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN UNION COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 830 PM EDT

* AT 758 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL.  THIS
  STORM WAS LOCATED 8 MILES EAST OF MORGANTON...MOVING SOUTHWEST AT
  20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HEMP...JONES CREEK...HURST...MARGRET...GADDISTOWN...DIAL...HAWK
  MOUNTAIN SHELTER AND STOVER CREEK SHELTER.

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 3491 8397 3465 8410 3466 8413 3464 8416
      3461 8419 3462 8420 3463 8419 3467 8425
      3473 8426 3479 8431 3499 8417
TIME...MOT...LOC 0002Z 026DEG 18KT 3487 8412

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 8:05 PM EDTSevere Thunderstorm WarningFFCCherokee, Cobb40 min
May 6, 8:09 PM EDTSpecial Weather StatementFFCCoweta36 min
May 6, 8:17 PM EDTSpecial Weather StatementFFCMeriwether28 min
May 6, 8:22 PM EDTSpecial Weather StatementFFCFannin, Gilmer23 min
May 6, 8:24 PM EDTSevere Thunderstorm WarningFFCCobb, Paulding51 min
May 6, 8:40 PM EDTSpecial Weather StatementFFCCarroll35 min
May 6, 8:41 PM EDTSpecial Weather StatementFFCMeriwether34 min
May 6, 8:42 PM EDTSpecial Weather StatementFFCFannin33 min
May 6, 8:54 PM EDTSpecial Weather StatementFFCCoweta36 min
May 6, 9:14 PM EDTSpecial Weather StatementFFCHeard31 min
May 6, 9:38 PM EDTSpecial Weather StatementFFCCarroll, Heard37 min
May 6, 9:53 PM EDTSevere Thunderstorm WarningFFCHeard, Troup37 min
May 7, 4:53 PM EDTSpecial Weather StatementFFCFloyd52 min
May 7, 6:32 PM EDTSpecial Weather StatementFFCMurray28 min
May 7, 6:34 PM EDTSpecial Weather StatementFFCCrawford41 min
May 7, 7:20 PM EDTSpecial Weather StatementFFCMarion, Schley25 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.