Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 41, NWS Atlanta, GA

March 2, 2012Dade County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 2, 2012, 12:21 PM EST for Dade County, Georgia. It was in force for 24 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: Mar 2, 2012, 12:21 PM EST (17:21 UTC)
Expired: Mar 2, 2012, 12:45 PM EST
In force: 24 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

County Dade County, GA

The radar

The Northeast Alabama radar (KHTX), 54 km from the middle of the area, began a volume at 17:25 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
Mar 2, 10:25 AM EST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.4 hours before the alert went out and 163 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: 1667 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

384 
WUUS52 KFFC 021721
SVRFFC
GAC083-021745-
/O.NEW.KFFC.SV.W.0041.120302T1721Z-120302T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1221 PM EST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DADE COUNTY IN NORTHWEST GEORGIA

* UNTIL 1245 PM EST

* AT 1215 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS UP TO 70
  MPH.  THIS STORM WAS LOCATED NEAR COLE CITY...MOVING EAST AT 45
  MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MORGANVILLE...HOOKER AND WILDWOOD.

* ALTHOUGH THE MAIN STORM IS LOCATED IN TENNESSEE...THIS STORM HAS 
PRODUCED A BAND OF DAMAGING WINDS THAT IS MOVING ACROSS EXTREME 
NORTH DADE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND 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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWEST GEORGIA.

&&

LAT...LON 3499 8546 3499 8538 3498 8537 3493 8540
      3490 8559 3497 8561 3498 8561 3499 8560
      3499 8547
TIME...MOT...LOC 1721Z 275DEG 38KT 3497 8548

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 10:47 AM EST	Wind Advisory	FFC	Bartow, Catoosa, Chattooga, Dade, Dawson, Fannin and 11 more	16 hr
Mar 2, 10:55 AM EST	Flash Flood Watch	FFC	Bartow, Catoosa, Chattooga, Cherokee, Dade, Fannin and 10 more	19 hr
Mar 2, 12:15 PM EST	Special Weather Statement	FFC	Dade	30 min
Mar 2, 4:55 PM EST	Special Weather Statement	FFC	Heard, Troup	50 min
Mar 2, 6:10 PM EST	Special Weather Statement	FFC	Catoosa	50 min
Mar 2, 6:43 PM EST	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Walker	47 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning in 2012

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.