Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 14, NWS Atlanta, GA

January 21, 2017Lamar County, Pike County, Upson County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jan 21, 2017, 11:39 AM EST for Lamar County, Pike County, Upson County, Georgia. It was in force for 36 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: Jan 21, 2017, 11:39 AM EST (16:39 UTC)
Expired: Jan 21, 2017, 12:15 PM EST
In force: 36 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Lamar County, GA, Pike County, GA, Upson County, GA

The radar

The Atlanta radar (KFFC), 48 km from the middle of the area, began a volume at 16:41 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
Jan 21, 11:39 AM EST	TORNADO	1 Wsw Delray, GA	DAMAGE REPORTED SOUTHWEST OF THE UPSON COUNTY AIRPORT. MANY TREES DOWN AND SNAPPED... TREES ON HOMES... POWER LINES DOWN.
Jan 21, 11:44 AM EST	TORNADO	2 Ssw The Rock, GA	DAMAGE REPORTED SOUTHWEST OF THE UPSON COUNTY AIRPORT. MANY TREES DOWN AND SNAPPED... TREES ON HOMES... POWERLINES DOWN.

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
Jan 21, 9:04 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 4.7 hours before the alert went out and 45 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: 388 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 536 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

125 
WUUS52 KFFC 211639
SVRFFC
GAC171-231-293-211715-
/O.NEW.KFFC.SV.W.0014.170121T1639Z-170121T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
1139 AM EST SAT JAN 21 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Southeastern Pike County in west central Georgia...
  North central Upson County in west central Georgia...
  Lamar County in west central Georgia...

* Until 1215 PM EST

* At 1139 AM EST, a severe thunderstorm was located near Piedmont, or
  7 miles north of Thomaston, moving northeast at 40 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Barnesville, Milner, Meansville, Aldora, The Rock, Goggins,
  Piedmont, Johnstonville, Atwater and Hannahs Mill.

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.

&&

A tornado watch remains in effect until 300 PM EST for central and
west central Georgia.

LAT...LON 3298 8439 3318 8422 3311 8404 3306 8404
      3292 8428
TIME...MOT...LOC 1639Z 218DEG 33KT 3299 8430 

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

2 follow-up statements

590 
WWUS52 KFFC 211652
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
1152 AM EST SAT JAN 21 2017

GAC231-293-211701-
/O.CAN.KFFC.SV.W.0014.000000T0000Z-170121T1715Z/
Pike GA-Upson GA-
1152 AM EST SAT JAN 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PIKE AND NORTH
CENTRAL UPSON COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 300 PM EST for central and
west central Georgia.

LAT...LON 3303 8426 3304 8426 3304 8425 3311 8425
      3318 8422 3311 8404 3306 8404 3299 8419
      3301 8427 3303 8427
TIME...MOT...LOC 1651Z 223DEG 32KT 3307 8420 

$$

GAC171-211715-
/O.CON.KFFC.SV.W.0014.000000T0000Z-170121T1715Z/
Lamar GA-
1152 AM EST SAT JAN 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM EST
FOR CENTRAL LAMAR COUNTY...

At 1151 AM EST, a severe thunderstorm was located over Aldora, or
over Barnesville, moving northeast at 35 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Barnesville, Milner, Aldora, Piedmont, Johnstonville and Goggins. 

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.

&&

A tornado watch remains in effect until 300 PM EST for central and
west central Georgia.

LAT...LON 3303 8426 3304 8426 3304 8425 3311 8425
      3318 8422 3311 8404 3306 8404 3299 8419
      3301 8427 3303 8427
TIME...MOT...LOC 1651Z 223DEG 32KT 3307 8420 

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

030 
WWUS52 KFFC 211711
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
1211 PM EST SAT JAN 21 2017

GAC171-211721-
/O.EXP.KFFC.SV.W.0014.000000T0000Z-170121T1715Z/
Lamar GA-
1211 PM EST SAT JAN 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL LAMAR COUNTY WILL
EXPIRE AT 1215 PM EST...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However gusty winds and heavy rain are still
possible with this thunderstorm.

A tornado watch remains in effect until 300 PM EST for central and
west central Georgia.

LAT...LON 3303 8426 3304 8426 3304 8425 3311 8425
      3318 8422 3311 8404 3306 8404 3299 8419
      3301 8427 3303 8427
TIME...MOT...LOC 1711Z 218DEG 33KT 3320 8408 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 7:52 AM EST	Special Weather Statement	FFC	Heard, Troup	38 min
Jan 21, 8:28 AM EST	Special Weather Statement	FFC	Troup	32 min
Jan 21, 8:33 AM EST	Tornado Warning	FFC	Troup	27 min
Jan 21, 8:55 AM EST	Severe Thunderstorm Warning	FFC	Meriwether, Troup	35 min
Jan 21, 9:23 AM EST	Special Weather Statement	FFC	Coweta	37 min
Jan 21, 10:04 AM EST	Special Weather Statement	FFC	Coweta, Fayette, Troup	56 min
Jan 21, 10:14 AM EST	Severe Thunderstorm Warning	FFC	Harris, Muscogee	46 min
Jan 21, 10:22 AM EST	Special Weather Statement	FFC	Chattahoochee, Stewart	38 min
Jan 21, 10:35 AM EST	Tornado Warning	FFC	Harris, Muscogee, Talbot	25 min
Jan 21, 11:00 AM EST	Severe Thunderstorm Warning	FFC	Talbot, Upson	30 min
Jan 21, 11:01 AM EST	Special Weather Statement	FFC	Coweta, Fayette, Heard, Troup	59 min
Jan 21, 11:10 AM EST	Tornado Warning	FFC	Meriwether, Talbot, Upson	32 min
Jan 21, 11:16 AM EST	Severe Thunderstorm Warning	FFC	Taylor	29 min
Jan 21, 11:26 AM EST	Tornado Warning Tornado observed	FFC	Crawford, Taylor, Upson	34 min
Jan 21, 11:36 AM EST	Special Weather Statement	FFC	Coweta, Fayette	39 min
Jan 21, 11:46 AM EST	Special Weather Statement	FFC	Macon, Peach, Schley, Sumter	44 min
Jan 21, 11:50 AM EST	Severe Thunderstorm Warning	FFC	Bibb, Crawford, Monroe	25 min
Jan 21, 11:56 AM EST	Tornado Warning	FFC	Lamar	14 min
Jan 21, 12:04 PM EST	Severe Thunderstorm Warning	FFC	Houston, Macon, Peach	26 min
Jan 21, 12:06 PM EST	Tornado Warning	FFC	Houston, Macon, Peach	24 min
Jan 21, 12:10 PM EST	Special Weather Statement	FFC	Clayton, Fayette, Henry, Spalding	50 min
Jan 21, 12:13 PM EST	Tornado Warning Tornado observed	FFC	Monroe	15 min
Jan 21, 12:21 PM EST	Tornado Warning	FFC	Houston, Peach, Twiggs	24 min
Jan 21, 12:28 PM EST	River Flood Warning	FFC	DeKalb	24 hr
Jan 21, 12:28 PM EST	River Flood Warning	FFC	Gwinnett	24 hr
Jan 21, 12:42 PM EST	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Laurens, Pulaski, Twiggs	33 min
Jan 21, 12:43 PM EST	Tornado Warning	FFC	Twiggs, Wilkinson	32 min
Jan 21, 12:53 PM EST	Severe Thunderstorm Warning	FFC	Bleckley, Crisp, Dodge, Dooly, Laurens, Pulaski and 1 more	52 min
Jan 21, 12:57 PM EST	Tornado Warning	FFC	Bleckley, Laurens	33 min
Jan 21, 1:05 PM EST	Severe Thunderstorm Warning	FFC	Johnson, Laurens, Washington, Wilkinson	40 min
Jan 21, 1:11 PM EST	Severe Thunderstorm Warning	FFC	Baldwin, Hancock, Washington, Wilkinson	49 min
Jan 21, 1:24 PM EST	Severe Thunderstorm Warning	FFC	Emanuel, Johnson, Laurens, Treutlen	51 min
Jan 21, 1:24 PM EST	Tornado Warning	FFC	Johnson, Laurens	36 min
Jan 21, 1:27 PM EST	Tornado Warning	FFC	Baldwin, Hancock, Washington	34 min
Jan 21, 1:31 PM EST	Severe Thunderstorm Warning	FFC	Emanuel, Laurens, Montgomery, Telfair, Toombs, Treutlen and 1 more	44 min
Jan 21, 1:32 PM EST	Severe Thunderstorm Warning	FFC	Jefferson, Washington	43 min
Jan 21, 1:41 PM EST	Tornado Warning	FFC	Jefferson, Johnson	34 min
Jan 21, 2:12 PM EST	Severe Thunderstorm Warning	FFC	Emanuel, Montgomery, Telfair, Toombs, Treutlen, Wheeler	33 min
Jan 21, 2:14 PM EST	Severe Thunderstorm Warning	FFC	Jefferson	31 min
Jan 21, 2:26 PM EST	River Flood Warning	FFC	DeKalb	24 hr
Jan 21, 3:46 PM EST	River Flood Warning	FFC	Gwinnett	24 hr
Jan 21, 3:46 PM EST	River Flood Warning	FFC	Forsyth, Fulton	64 hr
Jan 21, 5:39 PM EST	River Flood Warning	FFC	Gwinnett, Walton	24 hr

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.