Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 55, NWS Atlanta, GA

May 31, 2018Catoosa County, Whitfield County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 31, 2018, 3:20 PM EDT for Catoosa County, Whitfield County, Georgia. It was in force for 40 min. 2 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
May 31, 2018, 3:20 PM EDT (19:20 UTC)
Expired
May 31, 2018, 4:00 PM EDT
In force
40 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Catoosa County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 110 km from the middle of the area, began a volume at 19:22 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 31, 3:55 PM EDTTSTM WND DMG2 Sw Varnell, GATREE DOWN ACROSS THE ROAD NEAR THE INTERSECTION OF REED RD AND SHADOW ROCK DR.
May 31, 4:08 PM EDTHAIL 11 Ssw Tunnel Hill, GAQUARTER-SIZED HAIL REPORTED ON MOUNT VERNON RD NEAR TUNNEL HILL.

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 12:00Z, 7.3 hours before the alert went out and 173 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 2018-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 909 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 2018-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
909 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

773 
WUUS52 KFFC 311920
SVRFFC
GAC047-313-312000-
/O.NEW.KFFC.SV.W.0055.180531T1920Z-180531T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
320 PM EDT THU MAY 31 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Catoosa County in northwestern Georgia...
  Northeastern Whitfield County in northwestern Georgia...

* Until 400 PM EDT.

* At 320 PM EDT, a severe thunderstorm was located over Apison, or 7
  miles northeast of Ringgold, moving southeast at 10 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...
  Dalton, Ringgold, Varnell, Tunnel Hill, Cohutta, Beaverdale, Rocky
  Face, Red Clay S.p. and Apison.

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 3499 8486 3495 8483 3492 8484 3490 8483
      3489 8483 3487 8482 3486 8483 3486 8484
      3485 8484 3484 8485 3476 8507 3499 8513
TIME...MOT...LOC 1920Z 336DEG 7KT 3499 8501 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
393 
WWUS52 KFFC 311948
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
348 PM EDT THU MAY 31 2018

GAC047-313-312000-
/O.CON.KFFC.SV.W.0055.000000T0000Z-180531T2000Z/
Catoosa GA-Whitfield GA-
348 PM EDT THU MAY 31 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR NORTHEASTERN CATOOSA AND NORTHEASTERN WHITFIELD COUNTIES...

At 347 PM EDT, a severe thunderstorm was located over Tunnel Hill, or
near Ringgold, moving southeast at 10 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...
Dalton, Ringgold, Varnell, Tunnel Hill, Cohutta, Beaverdale, Rocky
Face, Red Clay S.p. and Apison.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3499 8486 3495 8483 3492 8484 3490 8483
      3489 8483 3487 8482 3486 8483 3486 8484
      3485 8484 3484 8485 3476 8507 3499 8513
TIME...MOT...LOC 1947Z 323DEG 9KT 3485 8503 

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

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 8:43 PM EDTSpecial Weather StatementFFCDawson32 min
May 30, 9:20 PM EDTSpecial Weather StatementFFCWhite40 min
May 30, 10:39 PM EDTSpecial Weather StatementFFCCrawford, Macon36 min
May 30, 11:13 PM EDTSpecial Weather StatementFFCCrawford, Monroe, Schley, Taylor47 min
May 31, 12:07 AM EDTSpecial Weather StatementFFCButts, Crawford, Jasper, Lamar, Macon, Monroe and 5 more53 min
May 31, 12:45 AM EDTFlash Flood WarningFFCCrawford, Talbot, Taylor, Upson6 hr
May 31, 1:54 AM EDTSpecial Weather StatementFFCHouston, Pulaski66 min
May 31, 1:45 PM EDTSpecial Weather StatementFFCWhite30 min
May 31, 2:09 PM EDTFlash Flood WarningFFCWhite6 hr
May 31, 2:17 PM EDTSpecial Weather StatementFFCCarroll28 min
May 31, 2:43 PM EDTSpecial Weather StatementFFCWhite32 min
May 31, 2:51 PM EDTFlash Flood WarningFFCWhite6 hr
May 31, 3:07 PM EDTSpecial Weather StatementFFCWhitfield38 min
May 31, 3:12 PM EDTSpecial Weather StatementFFCFannin, Towns, Union33 min
May 31, 3:33 PM EDTSpecial Weather StatementFFCWhite27 min
May 31, 3:46 PM EDTSpecial Weather StatementFFCFannin, Union29 min
May 31, 3:58 PM EDTSevere Thunderstorm WarningFFCCatoosa, Whitfield47 min
May 31, 4:07 PM EDTSpecial Weather StatementFFCWhite38 min
May 31, 4:09 PM EDTFlash Flood Warning EmergencyFFCWhite6 hr
May 31, 4:16 PM EDTSpecial Weather StatementFFCGilmer, Union29 min
May 31, 4:36 PM EDTSevere Thunderstorm WarningFFCWhite39 min
May 31, 4:52 PM EDTSpecial Weather StatementFFCDawson, Gordon, Lumpkin, Pickens38 min
May 31, 4:59 PM EDTSpecial Weather StatementFFCGwinnett31 min
May 31, 5:38 PM EDTSpecial Weather StatementFFCBanks, Cherokee, Dawson, Gordon, Hall, Pickens22 min
May 31, 5:54 PM EDTSevere Thunderstorm WarningFFCCherokee, Dawson, Forsyth, Pickens24 min
May 31, 6:02 PM EDTSevere Thunderstorm WarningFFCBanks, Hall, Jackson20 min
May 31, 6:19 PM EDTSpecial Weather StatementFFCHeard26 min
May 31, 6:24 PM EDTSpecial Weather StatementFFCMadison36 min
May 31, 6:53 PM EDTSpecial Weather StatementFFCOglethorpe37 min
May 31, 7:00 PM EDTSpecial Weather StatementFFCWilkes30 min
May 31, 7:10 PM EDTSpecial Weather StatementFFCWalton35 min
May 31, 7:51 PM EDTSpecial Weather StatementFFCGreene, Jasper, Morgan, Newton, Rockdale24 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2018Every severe thunderstorm warning in 2018

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.