Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 209, NWS Atlanta, GA

April 27, 2011Dade County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 27, 2011, 6:15 PM EDT for Dade County, Georgia. It was in force for 30 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
Apr 27, 2011, 6:15 PM EDT (22:15 UTC)
Expired
Apr 27, 2011, 6:45 PM EDT
In force
30 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

County Dade County, GA

The radar

The Northeast Alabama radar (KHTX), 52 km from the middle of the area, began a volume at 22:16 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.

IssuedProductOfficeLasted
Apr 27, 2:42 PM EDTTornado Watch PDSSPC8 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.3 hours before the alert went out and 165 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, Nashville Metro, TN at 12:00Z on 2011-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2011-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -84 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
714 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
-84 m²/s²
0-3 km storm-relative helicity
-38 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.

854 
WUUS52 KFFC 272215
SVRFFC
GAC083-272245-
/O.NEW.KFFC.SV.W.0209.110427T2215Z-110427T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
615 PM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 645 PM EDT

* AT 611 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DESTRUCTIVE WINDS UP TO 70 MPH.  THIS STORM WAS LOCATED 11 MILES
  WEST OF STEPHENSVILLE...MOVING NORTHEAST AT 65 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED ROTATION WITHIN THIS STORM. ALTHOUGH
CURRENT DATA DOES NOT INDICATE THE EXISTENCE OF A TORNADO...A TORNADO
MAY STILL DEVELOP. 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHWEST GEORGIA.

&&

LAT...LON 3498 8536 3496 8538 3489 8551 3486 8558
      3486 8559 3495 8561 3498 8561 3499 8560
TIME...MOT...LOC 2215Z 233DEG 55KT 3494 8568

$$
2 follow-up statements
318 
WWUS52 KFFC 272235
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
635 PM EDT WED APR 27 2011

GAC083-272245-
/O.CON.KFFC.SV.W.0209.000000T0000Z-110427T2245Z/
DADE GA-
635 PM EDT WED APR 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTHERN DADE COUNTY...

AT 516 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED
HAIL...AND DESTRUCTIVE WINDS UP TO 70 MPH. THIS STORM WAS LOCATED 6
MILES WEST OF COLE CITY...MOVING NORTHEAST AT 65 MPH.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHWEST GEORGIA.

&&

LAT...LON 3498 8536 3496 8538 3489 8551 3486 8558
      3486 8559 3495 8561 3498 8561 3499 8560
TIME...MOT...LOC 2235Z 233DEG 55KT 3512 8538

$$
059 
WWUS52 KFFC 272242
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
642 PM EDT WED APR 27 2011

GAC083-272251-
/O.EXP.KFFC.SV.W.0209.000000T0000Z-110427T2245Z/
DADE GA-
642 PM EDT WED APR 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DADE COUNTY EXPIRES
AT 645 PM EDT...

THE STORM RESPONSIBLE FOR THE WARNING HAS NOW EXITED THE COUNTY BUT 
NEW STORMS OVER ALABAMA WILL IMPACT THE AREA IN THE NEXT HOUR.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHWEST GEORGIA.

LAT...LON 3498 8536 3496 8538 3489 8551 3486 8558
      3486 8559 3495 8561 3498 8561 3499 8560
TIME...MOT...LOC 2241Z 233DEG 55KT 3517 8528

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 8:04 AM EDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Haralson, Polk56 min
Apr 27, 8:16 AM EDTTornado WarningFFCCatoosa, Chattooga, Dade, Walker, Whitfield44 min
Apr 27, 8:25 AM EDTTornado WarningFFCDade, Walker35 min
Apr 27, 8:28 AM EDTSevere Thunderstorm WarningFFCCarroll, Haralson, Heard32 min
Apr 27, 8:35 AM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Gilmer, Gordon, Murray and 5 more55 min
Apr 27, 8:42 AM EDTSevere Thunderstorm WarningFFCCatoosa, Murray, Whitfield48 min
Apr 27, 8:51 AM EDTSevere Thunderstorm WarningFFCClayton, Coweta, Douglas, Fayette, Fulton29 min
Apr 27, 8:54 AM EDTTornado WarningFFCGilmer, Gordon, Murray, Whitfield51 min
Apr 27, 9:02 AM EDTSevere Thunderstorm WarningFFCCatoosa, Dade, Walker16 min
Apr 27, 9:26 AM EDTSevere Thunderstorm WarningFFCFannin, Gilmer, Murray39 min
Apr 27, 1:59 PM EDTSevere Thunderstorm WarningFFCDade, Walker61 min
Apr 27, 2:25 PM EDTTornado WarningFFCDade, Walker34 min
Apr 27, 2:37 PM EDTSevere Thunderstorm WarningFFCCatoosa, Whitfield25 min
Apr 27, 5:07 PM EDTSevere Thunderstorm WarningFFCDade, Walker38 min
Apr 27, 5:14 PM EDTTornado WarningFFCDade, Walker46 min
Apr 27, 5:51 PM EDTTornado WarningFFCCatoosa24 min
Apr 27, 5:53 PM EDTRiver Flood WarningFFCDade11 hr
Apr 27, 6:03 PM EDTSevere Thunderstorm WarningFFCCatoosa, Walker27 min
Apr 27, 7:20 PM EDTSevere Thunderstorm WarningFFCChattooga, Dade, Walker55 min
Apr 27, 7:32 PM EDTTornado WarningFFCChattooga, Dade, Walker43 min
Apr 27, 7:59 PM EDTTornado WarningFFCCatoosa, Walker, Whitfield46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011

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.