Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 48, NWS Atlanta, GA

March 10, 20174 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 10, 2017, 1:36 AM EST for 4 counties in Georgia. It was in force for 39 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: Mar 10, 2017, 1:36 AM EST (06:36 UTC)
Expired: Mar 10, 2017, 2:15 AM EST
In force: 39 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Walker County, GA

What was reported inside it

Time	Report	Where	Remark
Mar 10, 1:53 AM EST	TSTM WND DMG	Trenton, GA	EMERGENCY MANAGER REPORTS MORE THAN 50 TREES WERE DOWNED ACROSS DADE COUNTY.
Mar 10, 2:11 AM EST	TSTM WND DMG	1 Wnw Greenwood, GA	A TREE WAS BLOWN DOWN ONTO I-75 NEAR MILE MARKER 345.

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 10, 12:18 AM EST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.6 hours before the alert went out and 174 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: 2857 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

786 
WUUS52 KFFC 100636
SVRFFC
GAC047-055-083-295-100715-
/O.NEW.KFFC.SV.W.0048.170310T0636Z-170310T0715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
136 AM EST FRI MAR 10 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Catoosa County in northwestern Georgia...
  Walker County in northwestern Georgia...
  Northwestern Chattooga County in northwestern Georgia...
  Dade County in northwestern Georgia...

* Until 215 AM EST

* At 133 AM EST, severe thunderstorms were located 20 miles 
  northwest of a Trenton to Wildwood line, moving east at 60 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, Summerville, Ringgold, Trenton, Fort Oglethorpe,
  Rossville, Chickamauga, Trion, Lookout Mountain, Menlo, Center
  Post, Blue Spring, Fairview, Linwood, Cloudland, Chattanooga
  Valley, Cloudland Canyon State Park, Hooker, Cooper Heights and
  James H. Floyd State Park.

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 8508 3496 8505 3481 8512 3482 8513
      3477 8514 3438 8533 3446 8550 3486 8559
      3498 8560
TIME...MOT...LOC 0633Z 281DEG 62KT 3518 8570 3499 8595 3487 8623 

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

1 follow-up statement

967 
WWUS52 KFFC 100700
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
200 AM EST FRI MAR 10 2017

GAC047-055-083-295-100715-
/O.CON.KFFC.SV.W.0048.000000T0000Z-170310T0715Z/
Catoosa GA-Walker GA-Chattooga GA-Dade GA-
200 AM EST FRI MAR 10 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM EST
FOR CATOOSA...WALKER...NORTHWESTERN CHATTOOGA AND DADE COUNTIES...

At 159 AM EST, severe thunderstorms extended from near Ridgeside to 
near Stephensville to near Pisgah, moving east at 60 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, Summerville, Ringgold, Trenton, Fort Oglethorpe,
Rossville, Chickamauga, Trion, Lookout Mountain, Menlo, Center Post,
Blue Spring, Fairview, Linwood, Cloudland, Chattanooga  Valley,
Cloudland Canyon State Park, Hooker, Cooper Heights and James H.
Floyd State Park.

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 8508 3496 8505 3481 8512 3482 8513
      3477 8514 3438 8533 3446 8550 3487 8558
      3498 8553
TIME...MOT...LOC 0659Z 286DEG 61KT 3504 8530 3485 8555 3473 8583 

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

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 10, 2:12 AM EST	Special Weather Statement	FFC	Chattooga, Murray, Whitfield	48 min
Mar 10, 2:35 AM EST	Special Weather Statement	FFC	Bartow, Fannin, Floyd, Gilmer, Gordon, Pickens	40 min
Mar 10, 3:11 AM EST	Special Weather Statement	FFC	Carroll, Cherokee, Cobb, Dawson, Douglas, Forsyth and 9 more	34 min
Mar 10, 3:28 AM EST	Severe Thunderstorm Warning	FFC	Cherokee, Forsyth, Gwinnett, Hall	32 min
Mar 10, 3:39 AM EST	Special Weather Statement	FFC	Banks, Barrow, Carroll, Clayton, Cobb, DeKalb and 10 more	51 min
Mar 10, 4:13 AM EST	Special Weather Statement	FFC	Barrow, Butts, Clarke, Clayton, Coweta, DeKalb and 20 more	62 min
Mar 10, 4:52 AM EST	Severe Thunderstorm Warning	FFC	Troup	21 min
Mar 10, 4:57 AM EST	Severe Thunderstorm Warning	FFC	Butts, Jasper, Monroe	21 min
Mar 10, 5:12 AM EST	Special Weather Statement	FFC	Baldwin, Bibb, Chattahoochee, Crawford, Glascock, Greene and 21 more	48 min
Mar 10, 5:55 AM EST	Special Weather Statement	FFC	Bleckley, Chattahoochee, Crawford, Crisp, Dodge, Dooly and 20 more	50 min
Mar 10, 6:37 AM EST	Special Weather Statement	FFC	Bleckley, Crisp, Dodge, Dooly, Emanuel, Johnson and 10 more	38 min
Mar 10, 7:09 AM EST	Special Weather Statement	FFC	Montgomery, Telfair, Toombs, Wheeler, Wilcox	51 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.