Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 152, NWS Atlanta, GA

June 21, 20154 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 21, 2015, 4:29 PM EDT for 4 counties in Georgia. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 21, 2015, 4:29 PM EDT (20:29 UTC)
Expired
Jun 21, 2015, 4:49 PM EDT
In force
20 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Crawford County, GA, Macon County, GA, Peach County, GA, Taylor County, GA

The radar

The Robins AFB radar (KJGX), 54 km from the middle of the area, began a volume at 20:30 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.5 hours before the alert went out and 117 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 2015-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1550 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 12:00Z on 2015-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 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
1550 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
808 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-27 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.

508 
WUUS52 KFFC 212029
SVRFFC
GAC079-193-225-269-212115-
/O.NEW.KFFC.SV.W.0152.150621T2029Z-150621T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
429 PM EDT SUN JUN 21 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PEACH COUNTY IN CENTRAL GEORGIA...
  NORTHEASTERN MACON COUNTY IN WEST CENTRAL GEORGIA...
  SOUTH CENTRAL CRAWFORD COUNTY IN CENTRAL GEORGIA...
  EAST CENTRAL TAYLOR COUNTY IN WEST CENTRAL GEORGIA...

* UNTIL 515 PM EDT

* AT 429 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR REYNOLDS...
  OR 9 MILES WEST OF FORT VALLEY...MOVING SOUTHEAST 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. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PERRY...FORT VALLEY...MARSHALLVILLE...REYNOLDS...POTTERVILLE...
  SAINT LOUIS...HICKS...NAKOMIS...WINCHESTER...LEE POPE...LAKEWOOD
  AND MIAMI VALLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING 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 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3253 8417 3268 8405 3257 8372 3252 8372
      3253 8375 3251 8375 3251 8379 3245 8380
      3244 8383 3246 8383 3246 8385 3238 8384
      3238 8386 3229 8385 3229 8390 3228 8390
TIME...MOT...LOC 2029Z 305DEG 25KT 3257 8404 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
167 
WWUS52 KFFC 212049
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
449 PM EDT SUN JUN 21 2015

GAC079-193-225-269-212059-
/O.CAN.KFFC.SV.W.0152.000000T0000Z-150621T2115Z/
PEACH GA-MACON GA-CRAWFORD GA-TAYLOR GA-
449 PM EDT SUN JUN 21 2015

...THE SEVERE THUNDERSTORM WARNING FOR PEACH...NORTHEASTERN MACON...
SOUTH CENTRAL CRAWFORD AND EAST CENTRAL TAYLOR COUNTIES IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER GUSTY WINDS ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3253 8417 3268 8405 3257 8372 3252 8372
      3253 8375 3251 8375 3251 8379 3245 8380
      3244 8383 3246 8383 3246 8385 3238 8384
      3238 8386 3229 8385 3229 8390 3228 8390
TIME...MOT...LOC 2047Z 305DEG 25KT 3249 8390 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 1:54 PM EDTSevere Thunderstorm WarningFFCDooly, Houston, Macon36 min
Jun 21, 2:00 PM EDTSpecial Weather StatementFFCSumter, Webster30 min
Jun 21, 2:04 PM EDTSpecial Weather StatementFFCTalbot26 min
Jun 21, 2:16 PM EDTSpecial Weather StatementFFCJones29 min
Jun 21, 2:18 PM EDTSpecial Weather StatementFFCMeriwether, Pike27 min
Jun 21, 2:22 PM EDTSpecial Weather StatementFFCPulaski38 min
Jun 21, 2:24 PM EDTSpecial Weather StatementFFCStewart36 min
Jun 21, 2:28 PM EDTSevere Thunderstorm WarningFFCDooly9 min
Jun 21, 2:29 PM EDTSpecial Weather StatementFFCTroup31 min
Jun 21, 2:31 PM EDTSpecial Weather StatementFFCMacon, Schley29 min
Jun 21, 2:48 PM EDTSpecial Weather StatementFFCMuscogee, Pike, Talbot27 min
Jun 21, 2:49 PM EDTHeat AdvisoryFFCBaldwin, Bibb, Bleckley, Crawford, Crisp, Dodge and 25 more29 hr
Jun 21, 3:00 PM EDTSevere Thunderstorm WarningFFCHarris, Muscogee45 min
Jun 21, 3:05 PM EDTSpecial Weather StatementFFCDodge25 min
Jun 21, 3:15 PM EDTSpecial Weather StatementFFCSchley30 min
Jun 21, 3:16 PM EDTSpecial Weather StatementFFCCrawford, Taylor, Upson29 min
Jun 21, 3:27 PM EDTSevere Thunderstorm WarningFFCCrawford, Upson48 min
Jun 21, 3:34 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Marion, Talbot26 min
Jun 21, 3:46 PM EDTSevere Thunderstorm WarningFFCTaylor44 min
Jun 21, 3:55 PM EDTSpecial Weather StatementFFCJohnson35 min
Jun 21, 4:04 PM EDTSevere Thunderstorm WarningFFCJohnson, Laurens, Washington, Wilkinson26 min
Jun 21, 4:14 PM EDTSpecial Weather StatementFFCHeard31 min
Jun 21, 4:31 PM EDTSpecial Weather StatementFFCJohnson29 min
Jun 21, 4:44 PM EDTSpecial Weather StatementFFCWilkinson31 min
Jun 21, 4:58 PM EDTSpecial Weather StatementFFCCoweta32 min
Jun 21, 5:32 PM EDTSpecial Weather StatementFFCTroup28 min
Jun 21, 6:03 PM EDTSpecial Weather StatementFFCGilmer27 min
Jun 21, 6:22 PM EDTSpecial Weather StatementFFCCherokee23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.