Alert archive / Georgia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 156, NWS Atlanta, GA

June 23, 2018Fannin County, Gilmer County, Murray County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 23, 2018, 2:37 PM EDT for Fannin County, Gilmer County, Murray County, Georgia. It was in force for 38 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
Jun 23, 2018, 2:37 PM EDT (18:37 UTC)
Expired
Jun 23, 2018, 3:15 PM EDT
In force
38 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Fannin County, GA, Gilmer County, GA, Murray County, GA

The radar

The Atlanta radar (KFFC), 152 km from the middle of the area, began a volume at 18:40 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
Jun 23, 3:11 PM EDTTSTM WND DMG3 Nne Cherry Log, GAMULTIPLE TREES AND POWER LINES REPORTED DOWN ON MAXWELL RD IN THE CHERRY LOG CREEK AREA. WINDS ESTIMATED AT 60 MPH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 23, 12:09 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.6 hours before the alert went out and 151 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 2018-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 670 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 2018-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.193958Sfc1 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
670 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

414 
WUUS52 KFFC 231837
SVRFFC
GAC111-123-213-231915-
/O.NEW.KFFC.SV.W.0156.180623T1837Z-180623T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
237 PM EDT SAT JUN 23 2018

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Eastern Murray County in northwestern Georgia...
  Gilmer County in north central Georgia...
  Fannin County in north central Georgia...

* Until 315 PM EDT.

* At 236 PM EDT, severe thunderstorms were located along a line
  extending from near Conasauga to Carters, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Ellijay, Blue Ridge, East Ellijay, Morganton, Jones Mill, Higdon,
  Loving, Cohutta Wilderness, Epworth, Conasauga Lake, Cartecay,
  Pisgah, Mineral Bluff, Cherry Log, Stover Creek Shelter, Fort
  Mountain State Park, Carters, Hemp, Talona and Tails Creek.

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 8414 3495 8418 3491 8413 3486 8413
      3484 8415 3475 8412 3462 8419 3461 8419
      3460 8425 3457 8426 3458 8433 3457 8434
      3458 8453 3460 8473 3461 8473 3461 8472
      3462 8472 3461 8475 3499 8474
TIME...MOT...LOC 1836Z 268DEG 40KT 3498 8466 3461 8469 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
638 
WWUS52 KFFC 231901
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
301 PM EDT SAT JUN 23 2018

GAC213-231910-
/O.CAN.KFFC.SV.W.0156.000000T0000Z-180623T1915Z/
Murray GA-
301 PM EDT SAT JUN 23 2018

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN MURRAY COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 400 PM EDT for
northwestern Georgia.

LAT...LON 3499 8414 3495 8418 3491 8413 3486 8413
      3484 8415 3475 8412 3461 8419 3462 8420
      3460 8425 3457 8426 3458 8433 3457 8434
      3459 8464 3478 8463 3479 8461 3482 8458
      3486 8462 3499 8462
TIME...MOT...LOC 1900Z 268DEG 40KT 3499 8436 3462 8439 

$$

GAC111-123-231915-
/O.CON.KFFC.SV.W.0156.000000T0000Z-180623T1915Z/
Gilmer GA-Fannin GA-
301 PM EDT SAT JUN 23 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR GILMER AND FANNIN COUNTIES...

At 300 PM EDT, severe thunderstorms were located along a line
extending from Copperhill to Cartecay, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Ellijay, Blue Ridge, East Ellijay, Morganton, Jones Mill, Higdon,
Loving, Cohutta Wilderness, Epworth, Cartecay, Pisgah, Mineral Bluff,
Cherry Log, Stover Creek Shelter, Hemp, Talona, Tails Creek, Margret,
Hurst and Dial.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3499 8414 3495 8418 3491 8413 3486 8413
      3484 8415 3475 8412 3461 8419 3462 8420
      3460 8425 3457 8426 3458 8433 3457 8434
      3459 8464 3478 8463 3479 8461 3482 8458
      3486 8462 3499 8462
TIME...MOT...LOC 1900Z 268DEG 40KT 3499 8436 3462 8439 

HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 8:01 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Harris, Muscogee29 min
Jun 22, 8:08 PM EDTSpecial Weather StatementFFCMorgan, Newton52 min
Jun 22, 8:23 PM EDTSpecial Weather StatementFFCTaylor52 min
Jun 22, 8:37 PM EDTSpecial Weather StatementFFCChattooga, Walker53 min
Jun 22, 8:40 PM EDTSpecial Weather StatementFFCBaldwin, Bibb, Jones, Monroe50 min
Jun 22, 8:54 PM EDTSpecial Weather StatementFFCGreene51 min
Jun 22, 9:06 PM EDTSevere Thunderstorm WarningFFCCrawford, Houston, Macon, Peach, Taylor39 min
Jun 22, 9:23 PM EDTSpecial Weather StatementFFCBartow, Floyd, Gordon52 min
Jun 22, 9:28 PM EDTSpecial Weather StatementFFCBaldwin, Wilkinson47 min
Jun 22, 9:45 PM EDTSpecial Weather StatementFFCTwiggs30 min
Jun 22, 9:53 PM EDTSevere Thunderstorm WarningFFCBartow, Floyd22 min
Jun 22, 10:05 PM EDTSpecial Weather StatementFFCGlascock, Jefferson40 min
Jun 22, 10:40 PM EDTSpecial Weather StatementFFCJefferson, Johnson50 min
Jun 22, 11:15 PM EDTSpecial Weather StatementFFCEmanuel, Johnson45 min
Jun 23, 1:31 AM EDTSpecial Weather StatementFFCTroup29 min
Jun 23, 2:27 AM EDTSpecial Weather StatementFFCMeriwether, Pike33 min
Jun 23, 3:06 AM EDTSpecial Weather StatementFFCCoweta, Fayette24 min
Jun 23, 1:26 PM EDTSpecial Weather StatementFFCDade, Walker49 min
Jun 23, 1:32 PM EDTSevere Thunderstorm WarningFFCCatoosa, Dade, Walker43 min
Jun 23, 1:48 PM EDTSpecial Weather StatementFFCWashington27 min
Jun 23, 2:02 PM EDTSevere Thunderstorm WarningFFCCatoosa, Gordon, Murray, Walker, Whitfield43 min
Jun 23, 2:16 PM EDTSpecial Weather StatementFFCJefferson29 min
Jun 23, 2:39 PM EDTSpecial Weather StatementFFCBibb51 min
Jun 23, 2:45 PM EDTSpecial Weather StatementFFCJohnson45 min
Jun 23, 3:14 PM EDTSevere Thunderstorm WarningFFCFannin, Gilmer, Lumpkin, Towns, Union, White46 min
Jun 23, 3:37 PM EDTSpecial Weather StatementFFCEmanuel38 min
Jun 23, 3:39 PM EDTSpecial Weather StatementFFCJohnson51 min
Jun 23, 4:13 PM EDTSpecial Weather StatementFFCMontgomery, Treutlen47 min
Jun 23, 5:09 PM EDTSpecial Weather StatementFFCHaralson36 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.