Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 189, NWS Atlanta, GA

July 1, 2012Crisp County, Wilcox County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 1, 2012, 9:04 PM EDT for Crisp County, Wilcox County, Georgia. It was in force for 41 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: Jul 1, 2012, 9:04 PM EDT (01:04 UTC)
Expired: Jul 1, 2012, 9:45 PM EDT
In force: 41 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Crisp County, GA, Wilcox County, GA

The radar

The Robins AFB radar (KJGX), 82 km from the middle of the area, began a volume at 01:04 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
Jul 1, 9:09 PM EDT	TSTM WND DMG	3 Sw Hatley, GA	CRISP COUNTY 911 RELAYED REPORTS OF SEVERAL DOWNED TREES AND LINES INCLUDING 2 TREES DOWNED ONTO A HOUSE. RADAR ESTIMATED TIME FROM 2109 EDT TO 2123 EDT.

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 180 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: 1719 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 2371 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 42 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.

727 
WUUS52 KFFC 020104
SVRFFC
GAC081-315-020145-
/O.NEW.KFFC.SV.W.0189.120702T0104Z-120702T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
904 PM EDT SUN JUL 1 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRISP COUNTY IN CENTRAL GEORGIA
  WILCOX COUNTY IN CENTRAL GEORGIA

* UNTIL 945 PM EDT

* AT 902 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS UP
  TO 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 9
  MILES SOUTHWEST OF CORDELE TO 6 MILES SOUTHWEST OF PITTS TO 6 MILES
  SOUTHEAST OF PINEVIEW...MOVING SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ROCHELLE...ARABI AND ABBEVILLE.

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.

&&

LAT...LON 3185 8395 3193 8392 3203 8396 3203 8361
      3212 8361 3212 8344 3213 8337 3208 8330
      3201 8330 3200 8328 3198 8329 3192 8321
      3185 8318 3185 8360 3180 8362 3180 8380
TIME...MOT...LOC 0105Z 328DEG 11KT 3189 8391 3188 8362
          3205 8342

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 8:07 PM EDT	Special Weather Statement	FFC	Dodge, Montgomery, Telfair, Toombs, Wheeler	38 min
Jul 1, 8:42 PM EDT	Severe Thunderstorm Warning	FFC	Montgomery, Toombs, Wheeler	18 min
Jul 1, 8:46 PM EDT	Special Weather Statement	FFC	Crisp, Dooly, Pulaski, Wilcox	29 min
Jul 1, 8:51 PM EDT	Special Weather Statement	FFC	Telfair	24 min
Jul 1, 11:18 PM EDT	Special Weather Statement	FFC	White	27 min
Jul 1, 11:22 PM EDT	Special Weather Statement	FFC	Towns	23 min
Jul 1, 11:58 PM EDT	Special Weather Statement	FFC	Peach	32 min
Jul 2, 12:04 AM EDT	Special Weather Statement	FFC	Clarke, Madison, Oglethorpe	26 min
Jul 2, 12:13 AM EDT	Special Weather Statement	FFC	Chattahoochee	32 min
Jul 2, 12:34 AM EDT	Special Weather Statement	FFC	Houston, Pulaski	41 min
Jul 2, 12:36 AM EDT	Special Weather Statement	FFC	Greene	24 min
Jul 2, 12:41 AM EDT	Special Weather Statement	FFC	Jasper, Morgan, Putnam	34 min
Jul 2, 12:46 AM EDT	Special Weather Statement	FFC	Marion, Schley	44 min
Jul 2, 1:00 AM EDT	Special Weather Statement	FFC	Towns	30 min
Jul 2, 1:03 AM EDT	Special Weather Statement	FFC	Bleckley, Twiggs	42 min
Jul 2, 1:05 AM EDT	Special Weather Statement	FFC	Fannin, Lumpkin, Towns, Union, White	25 min
Jul 2, 1:32 AM EDT	Special Weather Statement	FFC	Towns, Union	43 min
Jul 2, 2:14 AM EDT	Special Weather Statement	FFC	Gilmer	46 min
Jul 2, 2:33 AM EDT	Special Weather Statement	FFC	Gordon, Murray	42 min
Jul 2, 3:02 AM EDT	Special Weather Statement	FFC	Floyd	43 min
Jul 2, 3:52 AM EDT	Heat Advisory	FFC	Dade	11 hr
Jul 2, 6:42 AM EDT	Special Weather Statement	FFC	Carroll	48 min
Jul 2, 7:36 AM EDT	Special Weather Statement	FFC	Troup	39 min
Jul 2, 5:44 PM EDT	Special Weather Statement	FFC	Dade	46 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.