Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 145, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 11, 2011, 8:38 PM EDT for 4 counties in Georgia. It was in force for 52 min. 4 reports 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
- Apr 11, 2011, 8:38 PM EDT (00:38 UTC)
- Expired
- Apr 11, 2011, 9:30 PM EDT
- In force
- 52 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Walker County, GA
The radar
The Northeast Alabama radar (KHTX), 81 km from the middle of the area, began a volume at 00:38 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 |
|---|---|---|---|
| Apr 11, 9:22 PM EDT | TSTM WND DMG | Cloudland, GA | THE PUBLIC REPORTED A TREE ON A CAR IN CLOUDLAND. |
| Apr 11, 9:26 PM EDT | TSTM WND DMG | Summerville, GA | CHATTOOGA COUNTY 911 RELAYED A REPORT MANY TREES DOWN ACROSS THE ENTIRE COUNTY. |
| Apr 11, 9:29 PM EDT | TSTM WND DMG | Lafayette, GA | WALKER COUNTY 911 RELAYED A REPORT OF NUMEROUS TREES DOWN COUNTYWIDE. |
| Apr 11, 9:34 PM EDT | HAIL 0.75 | Trion, GA | THE PUBLIC REPORTED DIME SIZE HAIL IN TRION ALONG WITH POWER OUTAGES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 11, 8:08 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.6 hours before the alert went out and 171 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.
- Mixed-layer CAPE
- 9 J/kg
- Mixed-layer CIN
- -501 J/kg
- Mixed-layer LCL
- 1916 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 355 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
458
WUUS52 KFFC 120038
SVRFFC
GAC047-055-083-295-120130-
/O.NEW.KFFC.SV.W.0145.110412T0038Z-110412T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
838 PM EDT MON APR 11 2011
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CATOOSA COUNTY IN NORTHWEST GEORGIA
CHATTOOGA COUNTY IN NORTHWEST GEORGIA
DADE COUNTY IN NORTHWEST GEORGIA
WALKER COUNTY IN NORTHWEST GEORGIA
* UNTIL 930 PM EDT
* AT 833 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS IN NORTHEAST ALABAMA....CAPABLE OF
PRODUCING DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 22 MILES NORTHWEST OF TRENTON TO 34
MILES SOUTHWEST OF TRENTON TO 47 MILES WEST OF SUMMERVILLE...
MOVING EAST AT 50 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LOOKOUT MOUNTAIN...ROSSVILLE...FORT OGLETHORPE...CHICKAMAUGA...
LAFAYETTE...TRION AND RINGGOLD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS IN NORTHERN
ALABAMA. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
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 300 AM EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.
&&
LAT...LON 3499 8561 3499 8498 3491 8502 3488 8502
3486 8506 3482 8507 3481 8512 3482 8513
3472 8517 3472 8509 3469 8510 3442 8523
3436 8548 3477 8558
TIME...MOT...LOC 0037Z 249DEG 44KT 3506 8579 3464 8596
3430 8607
$$2 follow-up statements
141
WWUS52 KFFC 120105
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
905 PM EDT MON APR 11 2011
GAC047-055-083-295-120130-
/O.CON.KFFC.SV.W.0145.000000T0000Z-110412T0130Z/
WALKER GA-CATOOSA GA-CHATTOOGA GA-DADE GA-
905 PM EDT MON APR 11 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR DADE...CHATTOOGA...CATOOSA AND WALKER COUNTIES...
AT 856 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS STILL CAPABLE OF PRODUCING
DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
JUST WEST OF THE ALABAMA-GEORGIA BORDER...EXTENDING FROM 12 MILES
NORTH OF COLE CITY TO 10 MILES WEST OF RISING FAWN IN DADE COUNTY
SOUTH TO 20 MILES WEST OF MENLO IN CHATOOGA COUNTY...MOVING EAST AT
50 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
TRENTON...NEW ENGLAND...MORGANVILLE...HOOKER...CLOUDLAND CANYON STATE
PARK...WILDWOOD...LOOKOUT MOUNTAIN...CEDAR GROVE...CHATTANOOGA
VALLEY...CLOUDLAND...COOPER HEIGHTS...ROSSVILLE...LYERLY...
FAIRVIEW...LAKEVIEW...FORT OGLETHORPE...CHICKAMAUGA...BERRYTON...
CENTER POST...JAMES H. FLOYD STATE PARK...SUMMERVILLE...LINWOOD...
BLUE SPRING...LAFAYETTE...ROCK SPRING...NOBLE...SALEM...TIDINGS...
TRION...SUBLIGNA...WOOD STATION...BEAUMONT...RINGGOLD...BOYNTON...
INDIAN SPRINGS...GRAYSVILLE...VILLANOW...SUTTLES MILL AND NAOMI.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS IN NORTHERN
ALABAMA. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!
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 300 AM EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.
&&
LAT...LON 3499 8561 3499 8498 3491 8502 3488 8502
3486 8506 3482 8507 3481 8512 3482 8513
3472 8517 3472 8509 3469 8510 3442 8523
3436 8548 3477 8558
TIME...MOT...LOC 0101Z 249DEG 44KT 3516 8545 3474 8563
3440 8574
$$
10459
WWUS52 KFFC 120124
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
924 PM EDT MON APR 11 2011
GAC047-055-083-295-120130-
/O.CON.KFFC.SV.W.0145.000000T0000Z-110412T0130Z/
WALKER GA-CATOOSA GA-CHATTOOGA GA-DADE GA-
924 PM EDT MON APR 11 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR DADE...CHATTOOGA...CATOOSA AND WALKER COUNTIES...
AT 920 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 18 MILES NORTH OF GRAYSVILLE TO COOPER HEIGHTS TO MENLO...MOVING
EAST AT 50 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FORT
OGLETHORPE...CHICKAMAUGA...BERRYTON...CENTER POST...JAMES H. FLOYD
STATE PARK...SUMMERVILLE...SALEM...TIDINGS...TRION...SUBLIGNA...WOOD
STATION...BEAUMONT...RINGGOLD...BOYNTON...INDIAN SPRINGS...
VILLANOW...SUTTLES MILL...NAOMI...BLUE SPRING...LAFAYETTE...
LINWOOD...ROCK SPRING AND NOBLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WEAK...SHORT LIVED TORNADOES CAN SOMETIMES DEVELOP ALONG THE LEADING
EDGE OF SEVERE THUNDERSTORM LINES LIKE THIS ONE. HOWEVER...THE MAIN
THREAT IS DAMAGING WINDS. SEEK SHELTER INSIDE A STURDY BUILDING AND
STAY AWAY FROM OUTSIDE WALLS AND WINDOWS.
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 300 AM EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.
&&
LAT...LON 3499 8561 3499 8498 3491 8502 3488 8502
3486 8506 3482 8507 3481 8512 3482 8513
3472 8517 3472 8509 3469 8510 3442 8523
3436 8548 3477 8558
TIME...MOT...LOC 0123Z 249DEG 44KT 3525 8514 3483 8532
3449 8544
$$
10The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 9:21 PM EDT | Severe Thunderstorm Warning | FFC | Bartow, Chattooga, Floyd, Gordon, Murray, Polk and 2 more | 54 min |
| Apr 11, 10:01 PM EDT | Severe Thunderstorm Warning | FFC | Carroll, Cobb, Douglas, Haralson, Paulding, Polk | 44 min |
| Apr 11, 10:11 PM EDT | Severe Thunderstorm Warning | FFC | Bartow, Cherokee, Fannin, Gilmer, Gordon, Murray and 2 more | 34 min |
| Apr 11, 10:40 PM EDT | Severe Thunderstorm Warning | FFC | Bartow, Cherokee, Dawson, Fannin, Gilmer, Lumpkin and 2 more | 65 min |
| Apr 11, 10:44 PM EDT | Severe Thunderstorm Warning | FFC | Bartow, Carroll, Cherokee, Cobb, Coweta, Douglas and 4 more | 48 min |
| Apr 11, 11:42 PM EDT | Severe Thunderstorm Warning | FFC | Chattahoochee, Harris, Meriwether, Muscogee, Talbot, Troup | 48 min |
| Apr 12, 4:28 AM EDT | Wind Advisory | FFC | Baldwin, Banks, Barrow, Bartow, Bibb, Butts and 73 more | 16 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.