Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 68, NWS Atlanta, GA

March 21, 20177 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 21, 2017, 7:11 PM EDT for 7 counties in Georgia. It was in force for 49 min. 12 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: Mar 21, 2017, 7:11 PM EDT (23:11 UTC)
Expired: Mar 21, 2017, 8:00 PM EDT
In force: 49 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 70.0 mph

Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Gordon County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 91 km from the middle of the area, began a volume at 23:15 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

Time	Report	Where	Remark
Mar 21, 7:12 PM EDT	TSTM WND DMG	Fort Oglethorpe, GA	NUMEROUS TREES AND POWERLINES DOWNED IN THE RORT OGLETHORPE AREA. OVER 3000 WITHOUT POWER
Mar 21, 7:15 PM EDT	TSTM WND DMG	Fort Oglethorpe, GA	RECEIVED A REPORT OF 50 MPH GUST AND A TREE DOWN NEAR INTERSECTION OF US-27 AND GA-2
Mar 21, 7:15 PM EDT	TSTM WND GST 53	Lafayette, GA	AWOS NEAR LAFAYETTE GA REPORTED MEASURED WIND GUST OF 53 MPH.
Mar 21, 7:26 PM EDT	TSTM WND DMG	Rocky Face, GA	EM REPORTING SEVERAL TREES DOWN AROUND 1400 BLOCK OF LAFAYETTE HWY.
Mar 21, 7:30 PM EDT	TSTM WND DMG	Wildwood, GA	EMERGENCY MANAGER REPORTS PARTIAL ROOF DAMGE TO SEVERAL HOMES ALONG SIMS DRIVE. ADDITIONAL ROOF DAMAGE ALONG CREEK ROAD AND SLYGO ROADS. A TOTAL OF 130 DISPATCHED CALLS FOR TREES DOWN ACROSS THE COUNTY.
Mar 21, 7:30 PM EDT	TSTM WND GST 56	1 Ne Scenic Hills, GA	GDOT RWIS SITE REPORTED 56 MPH WIND GUST WITH THE LINE THAT MOVED ACROSS I75
Mar 21, 7:33 PM EDT	TSTM WND DMG	New England, GA	MULTIPLE TREES DOWN AND ALL LANES OF TRAFFIC ARE BLOCKED ON I-59 SOUTHBOUND AT MILE MARKER 17.
Mar 21, 7:36 PM EDT	TSTM WND DMG	Ringgold, GA	EMERGENCY MANAGER RELAYED MULTIPLE TREES DOWNED AND POWER OUTAGES IN THE RINGGOLD AREA
Mar 21, 7:36 PM EDT	TSTM WND DMG	Union Point, GA	NUMEROUS TREES DOWNED IN UNION POINT ALONG HWY 41 AND AIRPORT ROAD AREA. OVER 10000 WITHOUT POWER ACROSS WHITFIELD COUNTY
Mar 21, 7:40 PM EDT	TSTM WND DMG	Trion, GA	NUMEROUS TREES AND POWERLINES DOWN BETWEEN TELOGA AND TRION. TIME ESTIMATED FROM RADAR.
Mar 21, 7:43 PM EDT	TSTM WND DMG	Damascus, GA	NUMEROUS TREES AND POWERLINES DOWNED IN THE AREA AROUND TATE BEND ROAD. CHURCH WAS MISSING PART OF ITS ROOF AND AN APT COMPLEX SUSTAINED DAMAGE FROM A TREE FALLING ONTO IT.
Mar 21, 7:47 PM EDT	HAIL 1	Pleasant Grove, GA

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.

Issued	Product	Office	Lasted
Mar 21, 3:33 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.2 hours before the alert went out and 161 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1219 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

700 
WUUS52 KFFC 212311
SVRFFC
GAC047-055-083-115-129-295-313-220000-
/O.NEW.KFFC.SV.W.0068.170321T2311Z-170322T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
711 PM EDT TUE MAR 21 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Catoosa County in northwestern Georgia...
  Northeastern Floyd County in northwestern Georgia...
  Whitfield County in northwestern Georgia...
  Walker County in northwestern Georgia...
  Northwestern Gordon County in northwestern Georgia...
  Chattooga County in northwestern Georgia...
  Dade County in northwestern Georgia...

* Until 800 PM EDT

* At 710 PM EDT, severe thunderstorms were located extending from
  Ridgeside to Linwood to near Hammondville to near Columbus City,
  moving southeast at 35 mph.

  HAZARD...70 mph wind gusts and nickel size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Dalton, Calhoun, Lafayette, Summerville, Ringgold, Trenton, Fort
  Oglethorpe, Rossville, Chickamauga, Trion, Varnell, Lookout
  Mountain, Tunnel Hill, Cohutta, Resaca, Lyerly, Menlo, Center Post,
  Subligna and Fairview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms have likely produced 
wind damage across postions of northeast Alabama and southern 
Tennessee. SEEK SHELTER NOW inside a sturdy structure and stay away 
from windows! 

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 8488 3471 8491 3471 8494 3468 8491
      3468 8494 3464 8492 3454 8493 3440 8520
      3437 8548 3481 8557 3484 8554 3498 8548
TIME...MOT...LOC 2310Z 300DEG 32KT 3503 8522 3473 8531 3453 8569 3442
8623

HAIL...0.88IN
WIND...70MPH
 
$$

2 follow-up statements

926 
WWUS52 KFFC 212325
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
725 PM EDT TUE MAR 21 2017

GAC083-212334-
/O.CAN.KFFC.SV.W.0068.000000T0000Z-170322T0000Z/
Dade GA-
725 PM EDT TUE MAR 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR DADE COUNTY IS CANCELLED...

The storms which prompted the warning have moved southeast of the 
area. Therefore, the warning has been cancelled. Gusty winds, heavy 
rain and lightning will continue through at least 830 PM.

A severe thunderstorm watch remains in effect until 1100 PM EDT for
northwestern Georgia.

LAT...LON 3499 8488 3471 8491 3471 8494 3468 8491
      3468 8494 3464 8492 3454 8493 3440 8520
      3437 8548 3464 8552 3480 8533 3498 8532
TIME...MOT...LOC 2324Z 294DEG 42KT 3498 8498 3464 8509 3448 8545 3437
8599

$$

GAC047-055-115-129-295-313-220000-
/O.CON.KFFC.SV.W.0068.000000T0000Z-170322T0000Z/
Catoosa GA-Floyd GA-Whitfield GA-Walker GA-Gordon GA-Chattooga GA-
725 PM EDT TUE MAR 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR CATOOSA...NORTHEASTERN FLOYD...WHITFIELD...WALKER...NORTHWESTERN
GORDON AND CHATTOOGA COUNTIES...

At 724 PM EDT, severe thunderstorms were located extending from
Cohutta to near Villanow to Menlo to Geraldine, moving southeast at
50 mph.

HAZARD...70 mph wind gusts and nickel size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Dalton, Calhoun, Lafayette, Summerville, Ringgold, Fort Oglethorpe,
Chickamauga, Trion, Varnell, Tunnel Hill, Cohutta, Resaca, Lyerly,
Menlo, Center Post, Subligna, Blue Spring, Lake Marvin, Fairview and
Linwood.

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 8488 3471 8491 3471 8494 3468 8491
      3468 8494 3464 8492 3454 8493 3440 8520
      3437 8548 3464 8552 3480 8533 3498 8532
TIME...MOT...LOC 2324Z 294DEG 42KT 3498 8498 3464 8509 3448 8545 3437
8599

HAIL...0.88IN
WIND...70MPH
 
$$

379 
WWUS52 KFFC 212352
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
752 PM EDT TUE MAR 21 2017

GAC047-055-115-129-295-313-220000-
/O.EXP.KFFC.SV.W.0068.000000T0000Z-170322T0000Z/
Catoosa GA-Floyd GA-Whitfield GA-Walker GA-Gordon GA-Chattooga GA-
752 PM EDT TUE MAR 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR CATOOSA...NORTHEASTERN
FLOYD...WHITFIELD...WALKER...NORTHWESTERN GORDON AND CHATTOOGA
COUNTIES WILL EXPIRE AT 800 PM EDT...
    
The storms which prompted the warning have moved southeast of 
extreme northwest Georgia. Therefore the warning will be allowed to 
expire. However, gusty winds and heavy rain are still possible 
through 900 PM.

A severe thunderstorm watch remains in effect until 1100 PM EDT for
northwestern Georgia.

Remember, a Severe Thunderstorm Warning still remains in effect for 
portions of Chatooga, Gordon, Whitfield, and Floyd county.

LAT...LON 3499 8488 3471 8491 3471 8494 3468 8491
      3468 8494 3464 8492 3454 8493 3440 8520
      3437 8548 3464 8552 3480 8533 3498 8532
TIME...MOT...LOC 2350Z 300DEG 32KT 3488 8476 3454 8487 3438 8523 3427
8577

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 21, 3:40 PM EDT	Special Weather Statement	FFC	Banks	50 min
Mar 21, 3:50 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall, White	40 min
Mar 21, 4:08 PM EDT	Special Weather Statement	FFC	Lumpkin	52 min
Mar 21, 4:23 PM EDT	Special Weather Statement	FFC	Chattooga	37 min
Mar 21, 4:29 PM EDT	Severe Thunderstorm Warning	FFC	Hall, White	46 min
Mar 21, 4:36 PM EDT	Special Weather Statement	FFC	Whitfield	39 min
Mar 21, 4:57 PM EDT	Severe Thunderstorm Warning	FFC	Murray, Whitfield	33 min
Mar 21, 4:58 PM EDT	Special Weather Statement	FFC	Union	47 min
Mar 21, 5:04 PM EDT	Flash Flood Warning	FFC	Hall, White	6 hr
Mar 21, 5:09 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Lumpkin, Union	51 min
Mar 21, 5:13 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Hall, White	47 min
Mar 21, 5:18 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	18 min
Mar 21, 5:24 PM EDT	Special Weather Statement	FFC	Murray	36 min
Mar 21, 5:41 PM EDT	Severe Thunderstorm Warning	FFC	Lumpkin, White	49 min
Mar 21, 5:44 PM EDT	Special Weather Statement	FFC	Dade	31 min
Mar 21, 5:52 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Lumpkin, Union	38 min
Mar 21, 5:59 PM EDT	Severe Thunderstorm Warning	FFC	Banks	46 min
Mar 21, 6:06 PM EDT	Flash Flood Warning	FFC	Dade, Walker	6 hr
Mar 21, 6:06 PM EDT	Severe Thunderstorm Warning	FFC	Fannin	24 min
Mar 21, 6:07 PM EDT	Severe Thunderstorm Warning	FFC	Dade, Walker	23 min
Mar 21, 6:20 PM EDT	Flash Flood Warning	FFC	Lumpkin, Union, White	6 hr
Mar 21, 6:27 PM EDT	Special Weather Statement	FFC	Jackson	33 min
Mar 21, 6:28 PM EDT	Special Weather Statement	FFC	Walker	32 min
Mar 21, 6:28 PM EDT	Severe Thunderstorm Warning	FFC	Lumpkin, Union	47 min
Mar 21, 6:31 PM EDT	Special Weather Statement	FFC	White	44 min
Mar 21, 6:33 PM EDT	Severe Thunderstorm Warning	FFC	Fannin	42 min
Mar 21, 6:38 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Walker	37 min
Mar 21, 6:53 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Jackson, Madison	52 min
Mar 21, 6:56 PM EDT	Special Weather Statement	FFC	Banks	49 min
Mar 21, 7:08 PM EDT	Severe Thunderstorm Warning	FFC	Madison	37 min
Mar 21, 7:09 PM EDT	Special Weather Statement	FFC	Forsyth	51 min
Mar 21, 7:13 PM EDT	Special Weather Statement	FFC	Jackson	47 min
Mar 21, 7:16 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Union	44 min
Mar 21, 7:17 PM EDT	Special Weather Statement	FFC	Walton	43 min
Mar 21, 7:21 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Madison, Oglethorpe	24 min
Mar 21, 7:24 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Jackson, Oconee	36 min
Mar 21, 7:33 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Gwinnett, Walton	42 min
Mar 21, 7:35 PM EDT	Special Weather Statement	FFC	Banks	25 min
Mar 21, 7:37 PM EDT	Special Weather Statement	FFC	Gilmer, Murray	23 min
Mar 21, 7:41 PM EDT	Special Weather Statement	FFC	Dawson	34 min
Mar 21, 7:41 PM EDT	Severe Thunderstorm Warning	FFC	Gilmer, Murray	34 min
Mar 21, 7:45 PM EDT	Severe Thunderstorm Warning	FFC	Clarke, Jackson, Madison, Oconee, Oglethorpe	45 min
Mar 21, 7:48 PM EDT	Special Weather Statement	FFC	Lumpkin, White	27 min
Mar 21, 7:48 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Chattooga, Fannin, Floyd, Gilmer, Gordon and 3 more	42 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.