Alert archive / Georgia / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 9, NWS Atlanta, GA

January 7, 2009Macon County, Schley County, Taylor County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jan 7, 2009, 3:16 AM EST for Macon County, Schley County, Taylor County, Georgia. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 7, 2009, 3:16 AM EST (08:16 UTC)
Expired: Jan 7, 2009, 3:45 AM EST
In force: 29 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Macon County, GA, Schley County, GA, Taylor County, GA

The radar

The Robins AFB radar (KJGX), 71 km from the middle of the area, began a volume at 08:18 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.

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 6, 11:51 PM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.3 hours before the alert went out and 113 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: 41 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 89 kt
0-1 km storm-relative helicity: 406 m²/s²
0-3 km storm-relative helicity: 492 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KFFC 070816
SVRFFC
GAC193-249-269-070845-
/O.NEW.KFFC.SV.W.0009.090107T0816Z-090107T0845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
316 AM EST WED JAN 7 2009

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MACON COUNTY IN WEST CENTRAL GEORGIA
  SCHLEY COUNTY IN WEST CENTRAL GEORGIA
  SOUTHEASTERN TAYLOR COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 345 AM EST

* AT 314 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS UP TO 60
  MPH.  THIS STORM WAS LOCATED NEAR ELLAVILLE...MOVING NORTHEAST AT
  60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  FOUNTAINVILEE...OGLETHORPE AND MARSHALLVILLE.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT 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.

LAT...LON 3231 8440 3236 8438 3257 8405 3254 8401
      3250 8400 3251 8391 3248 8392 3249 8389
      3246 8385 3243 8385 3243 8383 3239 8384
      3218 8432
TIME...MOT...LOC 0816Z 241DEG 66KT 3231 8426

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 6, 9:11 PM EST	Areal Flood Warning	FFC	Polk	10 hr
Jan 6, 10:42 PM EST	River Flood Warning	FFC	Floyd, Gordon	4 days
Jan 7, 1:42 AM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Muscogee	33 min
Jan 7, 1:54 AM EST	Severe Thunderstorm Warning	FFC	Chattahoochee, Stewart	36 min
Jan 7, 2:11 AM EST	Severe Thunderstorm Warning	FFC	Marion	34 min
Jan 7, 2:19 AM EST	Severe Thunderstorm Warning	FFC	Talbot, Taylor, Upson	26 min
Jan 7, 2:32 AM EST	Severe Thunderstorm Warning	FFC	Crawford, Taylor	43 min
Jan 7, 3:21 AM EST	River Flood Warning	FFC	Floyd	33 hr
Jan 7, 3:56 AM EST	Wind Advisory	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more	18 hr
Jan 7, 5:17 AM EST	River Flood Warning	FFC	Gordon	22 hr
Jan 7, 9:12 AM EST	Areal Flood Warning	FFC	Catoosa, Chattooga, Floyd, Gordon, Murray, Walker and 1 more	23 hr
Jan 7, 11:35 AM EST	River Flood Warning	FFC	Clarke, Greene, Oconee	58 hr

Nearby

Severe Thunderstorm Warnings in Georgia, 2009 Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.