Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 326, NWS Atlanta, GA

September 5, 2017Catoosa County, Walker County, Whitfield County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 5, 2017, 5:32 PM EDT for Catoosa County, Walker County, Whitfield County, Georgia. It was in force for 13 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
Sep 5, 2017, 5:32 PM EDT (21:32 UTC)
Expired
Sep 5, 2017, 5:45 PM EDT
In force
13 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Catoosa County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 81 km from the middle of the area, began a volume at 21:34 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, 9.5 hours before the alert went out and 165 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 2017-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 483 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 2017-09-05The 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
483 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
936 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

630 
WUUS52 KFFC 052132
SVRFFC
GAC047-295-313-052145-
/O.NEW.KFFC.SV.W.0326.170905T2132Z-170905T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
532 PM EDT TUE SEP 5 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southwestern Catoosa County in northwestern Georgia...
  West central Whitfield County in northwestern Georgia...
  Southeastern Walker County in northwestern Georgia...

* Until 545 PM EDT

* At 532 PM EDT, a severe thunderstorm was located over Naomi, or
  near Lafayette, moving east 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. 

* Locations impacted include...
  Lafayette, Naomi, Linwood, Beaumont, Suttles Mill, Noble, Villanow,
  Wood Station and Rock Spring.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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 3485 8519 3471 8504 3459 8523 3459 8533
      3473 8542
TIME...MOT...LOC 2132Z 289DEG 26KT 3472 8519 

HAIL...1.00IN
WIND...60MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 8:26 PM EDTSpecial Weather StatementFFCToombs34 min
Sep 4, 10:40 PM EDTSpecial Weather StatementFFCTreutlen35 min
Sep 5, 3:15 PM EDTSpecial Weather StatementFFCChattooga30 min
Sep 5, 3:21 PM EDTSpecial Weather StatementFFCGilmer, Murray24 min
Sep 5, 3:49 PM EDTSpecial Weather StatementFFCChattooga, Floyd26 min
Sep 5, 4:04 PM EDTSpecial Weather StatementFFCMurray26 min
Sep 5, 4:23 PM EDTSpecial Weather StatementFFCCatoosa37 min
Sep 5, 4:38 PM EDTSpecial Weather StatementFFCDade37 min
Sep 5, 4:50 PM EDTSpecial Weather StatementFFCFannin25 min
Sep 5, 5:01 PM EDTSevere Thunderstorm WarningFFCFannin, Gilmer29 min
Sep 5, 5:07 PM EDTSevere Thunderstorm WarningFFCDade, Walker23 min
Sep 5, 5:08 PM EDTSpecial Weather StatementFFCMurray37 min
Sep 5, 5:18 PM EDTSpecial Weather StatementFFCCatoosa27 min
Sep 5, 5:34 PM EDTSpecial Weather StatementFFCCherokee26 min
Sep 5, 5:47 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Pickens28 min
Sep 5, 5:51 PM EDTSpecial Weather StatementFFCPolk24 min
Sep 5, 5:57 PM EDTSpecial Weather StatementFFCGordon33 min
Sep 5, 6:08 PM EDTSpecial Weather StatementFFCDouglas37 min
Sep 5, 6:17 PM EDTSpecial Weather StatementFFCDawson, Lumpkin, White43 min
Sep 5, 6:20 PM EDTSpecial Weather StatementFFCCherokee40 min
Sep 5, 6:40 PM EDTSevere Thunderstorm WarningFFCDawson, Forsyth, Hall, Lumpkin, White35 min
Sep 5, 6:51 PM EDTSevere Thunderstorm WarningFFCCoweta, Douglas, Fayette, Fulton24 min
Sep 5, 6:57 PM EDTSpecial Weather StatementFFCHaralson, Paulding33 min
Sep 5, 7:02 PM EDTSpecial Weather StatementFFCCobb, Forsyth28 min
Sep 5, 7:12 PM EDTSpecial Weather StatementFFCBanks, Hall33 min
Sep 5, 7:17 PM EDTSpecial Weather StatementFFCClayton28 min
Sep 5, 7:20 PM EDTSpecial Weather StatementFFCCoweta25 min
Sep 5, 7:33 PM EDTSpecial Weather StatementFFCCobb, Forsyth, Gwinnett27 min
Sep 5, 7:38 PM EDTSpecial Weather StatementFFCFulton37 min
Sep 5, 7:47 PM EDTSpecial Weather StatementFFCClayton, Coweta, Fayette43 min
Sep 5, 7:48 PM EDTSpecial Weather StatementFFCBanks, Hall, Jackson27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017Every severe thunderstorm warning in 2017

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.