Alert archive / Georgia / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 331, NWS Atlanta, GA

December 16, 2019Dade County, Walker County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Dec 16, 2019, 8:04 PM EST for Dade County, Walker County, Georgia. It was in force for 26 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
Dec 16, 2019, 8:04 PM EST (01:04 UTC)
Expired
Dec 16, 2019, 8:30 PM EST
In force
26 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dade County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 63 km from the middle of the area, began a volume at 01:06 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
Dec 16, 8:24 PM ESTTSTM WND DMG1 E Chattanooga Valley, GAA TREE WAS REPORTED DOWN ON THE 1400TH BLOCK OF RIDGELAND RD IN ROSSVILLE GA. TIME IS ESTIMATED FROM RADAR.

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 00:00Z, 1.1 hours before the alert went out and 192 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 00:00Z on 2019-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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 00:00Z on 2019-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 272 square meters per square second.1939587897Sfc1 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
15 J/kg
Mixed-layer CIN
-120 J/kg
Mixed-layer LCL
864 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
272 m²/s²
0-3 km storm-relative helicity
353 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

657 
WUUS52 KFFC 170104
SVRFFC
GAC083-295-170130-
/O.NEW.KFFC.SV.W.0331.191217T0104Z-191217T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
804 PM EST Mon Dec 16 2019

The National Weather Service in Peachtree City has issued a

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

* Until 830 PM EST.

* At 804 PM EST, a severe thunderstorm was located over Long Island,
  or near Bridgeport, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Chattanooga, Trenton, Fort Oglethorpe, Rossville, Chickamauga,
  Lookout Mountain, Lakeview, Cole City, Wildwood, Fairview,
  Stephensville, Chattanooga  Valley, New England, Morganville,
  Hooker and East Ridge.

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 8526 3483 8526 3484 8558 3498 8560
TIME...MOT...LOC 0104Z 271DEG 40KT 3494 8566 

HAIL...<.75IN
WIND...60MPH
 
$$
1 follow-up statement
837 
WWUS52 KFFC 170129
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
829 PM EST Mon Dec 16 2019

GAC083-295-170138-
/O.EXP.KFFC.SV.W.0331.000000T0000Z-191217T0130Z/
Walker GA-Dade GA-
829 PM EST Mon Dec 16 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WALKER AND
NORTHERN DADE COUNTIES WILL EXPIRE AT 830 PM EST...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 3499 8526 3483 8526 3484 8558 3498 8560
TIME...MOT...LOC 0128Z 271DEG 40KT 3493 8534 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 16, 7:56 PM ESTSpecial Weather StatementFFCDade49 min
Dec 16, 8:20 PM ESTSpecial Weather StatementFFCWalker25 min
Dec 16, 8:29 PM ESTSpecial Weather StatementFFCCatoosa, Whitfield31 min
Dec 16, 9:00 PM ESTSpecial Weather StatementFFCWhitfield30 min
Dec 16, 9:25 PM ESTSpecial Weather StatementFFCMurray35 min
Dec 16, 9:34 PM ESTSpecial Weather StatementFFCFannin41 min
Dec 16, 11:14 PM ESTSpecial Weather StatementFFCFannin31 min
Dec 16, 11:33 PM ESTSpecial Weather StatementFFCChattooga27 min
Dec 17, 12:40 AM ESTSpecial Weather StatementFFCChattooga, Floyd, Gilmer, Gordon65 min
Dec 17, 12:50 AM ESTSpecial Weather StatementFFCHeard, Troup55 min
Dec 17, 1:41 AM ESTSpecial Weather StatementFFCCoweta, Meriwether34 min
Dec 17, 2:04 AM ESTSpecial Weather StatementFFCClayton, Henry26 min
Dec 17, 2:28 AM ESTSpecial Weather StatementFFCNewton, Walton32 min
Dec 17, 2:30 AM ESTSpecial Weather StatementFFCHarris30 min
Dec 17, 3:00 AM ESTSpecial Weather StatementFFCTalbot, Upson30 min
Dec 17, 3:04 AM ESTSpecial Weather StatementFFCGreene, Morgan, Oconee, Oglethorpe26 min
Dec 17, 3:25 AM ESTSpecial Weather StatementFFCOglethorpe, Wilkes35 min
Dec 17, 7:12 AM ESTRiver Flood WarningFFCDade20 hr
Dec 17, 9:12 AM ESTRiver Flood WarningFFCWhitfield35 hr
Dec 17, 9:50 AM ESTSpecial Weather StatementFFCSumter25 min
Dec 17, 10:08 AM ESTSpecial Weather StatementFFCDooly37 min
Dec 17, 10:33 AM ESTSpecial Weather StatementFFCPulaski27 min
Dec 17, 12:05 PM ESTTornado Warning Tornado observedConsiderable damage threatFFCTelfair27 min
Dec 17, 12:45 PM ESTSpecial Weather StatementFFCToombs45 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2019Every severe thunderstorm warning in 2019

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.