Alert archive / Georgia / Flash Flood Warnings in 2009
Flash Flood Warning 48, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Oct 12, 2009, 8:34 AM EDT for 8 counties in Georgia. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 12, 2009, 8:34 AM EDT (12:34 UTC)
- Expired
- Oct 12, 2009, 2:30 PM EDT
- In force
- 6 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cherokee County, GA, Cobb County, GA, DeKalb County, GA, Douglas County, GA, Forsyth County, GA, Fulton County, GA, Gwinnett County, GA, Paulding County, GA
The radar
The Atlanta radar (KFFC), 61 km from the middle of the area, began a volume at 12:36 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 nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.6 hours before the alert went out and 59 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 309 m²/s²
- 0-3 km storm-relative helicity
- 511 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS52 KFFC 121234
FFWFFC
GAC057-067-089-097-117-121-135-223-121830-
/O.NEW.KFFC.FF.W.0048.091012T1234Z-091012T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
834 AM EDT MON OCT 12 2009
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
COBB COUNTY IN NORTH CENTRAL GEORGIA
DEKALB COUNTY IN NORTH CENTRAL GEORGIA
DOUGLAS COUNTY IN NORTH CENTRAL GEORGIA
SOUTHERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA
FULTON COUNTY IN NORTH CENTRAL GEORGIA
GWINNETT COUNTY IN NORTH CENTRAL GEORGIA
EASTERN PAULDING COUNTY IN NORTHWEST GEORGIA
* UNTIL 230 PM EDT
* AT 821 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM AN AREA OF SHOWERS AND THUNDERSTORM OVER
THE WARNED AREA. SINCE 5 AM...MOST OF THE AREA HAS RECEIVED 1 TO
2 INCHES OF RAIN. AN ADDITIONAL 2 TO 3 INCHES CAN BE EXPECTED
ACROSS THE WARNED AREA AS ANOTHER LINE OF VERY HEAVY RAINFALL
MOVES IN FROM ALABAMA.
* SEVERAL CREEKS AND STREAMS ARE RISING RAPIDLY. NORTH FORK
PEACHTREE CREEK...CROOKED CREEK...PEW CREEK AT LAWRENCEVILLE...
AND NICKAJACK CREEK ARE ALREADY ABOVE ACTION STAGE AND ARE NEARING
MINOR FLOOD STAGE. OTHER CREEKS...SUCH AS NOONDAY CREEK...NANCY
CREEK...NOSES CREEK...AND UTOY CREEK...JUST TO NAME A FEW...ARE
ALSO RISING RAPIDLY AND WILL SOON REACH FLOOD STAGE. WIDESPREAD
MINOR FLOODING OF THESE CREEKS IS EXPECTED...BUT SOME CREEKS MAY
APPROACH OR EXCEED MODERATE FLOOD STAGE. IN ADDITION...WATER MAY
BEGIN TO INUNDATE LOW LYING URBAN AREAS DUE TO OVERWHELMED DRAINS.
TAKE WHATEVER PRECAUTIONS NECESSARY TO PROTECT LIFE AND PROPERTY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE RAPID RISES AND
FLOODING OF SMALL CREEKS AND STREAMS...AS WELL AS HIGHWAYS AND
UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG
THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT
TO FLOODING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY...THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY TURN AROUND DONT DROWN
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
&&
LAT...LON 3409 8490 3409 8466 3421 8465 3420 8403
3418 8406 3415 8397 3381 8395 3372 8406
3363 8412 3364 8414 3365 8438 3365 8445
3362 8446 3357 8490
$$2 follow-up statements
000
WGUS72 KFFC 121507
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1107 AM EDT MON OCT 12 2009
GAC057-067-089-097-117-121-135-223-121830-
/O.CON.KFFC.FF.W.0048.000000T0000Z-091012T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DOUGLAS GA-DEKALB GA-PAULDING GA-COBB GA-GWINNETT GA-FORSYTH GA-
CHEROKEE GA-FULTON GA-
1107 AM EDT MON OCT 12 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR
FULTON...SOUTHERN CHEROKEE...SOUTHERN FORSYTH...GWINNETT...COBB...
EASTERN PAULDING...DEKALB AND DOUGLAS COUNTIES...
AT 1045 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED WIDESPREAD
RAINFALL AMOUNTS OF 2 TO 2.5 INCHES HAD FALLEN OVER THE WARNED AREA
SINCE EARLY THIS MORNING. ADDITIONAL RAINFALL AMOUNTS UP TO ONE INCH
CAN BE EXPECTED BEFORE THE RAIN DIMINISHES IN THE AFTERNOON.
WIDESPREAD MINOR FLOODING OF SMALL CREEKS AND STREAMS IS LIKELY.
SOME STORM DRAINS MAY BE OVERRUN AND CAUSE TEMPORARY STREET FLOODING
IN LOW LYING AREAS.
THE FOLLOWING INFORMATION IS FOR SOME OF THE AREA CREEKS NEAR FLOOD
STAGE.
THE STAGE AT SOPE CREEK NEAR MARIETTA AT 10 AM WAS 11.5 FEET AND
RISING. FLOOD STAGE IS 12 FEET. THE CREEK WILL RISE TO NEAR FLOOD
STAGE BY THIS AFTERNOON. MINOR FLOODING OF YARDS BEGINS NEAR LOWER
ROSWELL ROAD.
THE STAGE AT NANCY CREEK NEAR ATLANTA AT 10 AM WAS 10 FEET AND
RISING. FLOOD STAGE IS 11.0 FEET. THE CREEK WILL RISE TO NEAR FLOOD
STAGE BY THIS AFTERNOON. MINOR FLOODING OF YARDS OCCURS.
THE STAGE AT NORTH FORK PEACHTREE CREEK AT 10 AM WAS 11.2 FEET AND
RISING. FLOOD STAGE IS 12 FEET. THE CREEK WILL RISE TO NEAR FLOOD
STAGE BY THIS AFTERNOON. MINOR FLOODING OF YARDS OCCURS.
THE STAGE AT PEACHTREE CREEK NEAR ATLANTA AT 10 AM WAS 12.9 FEET
AND RISING. FLOOD STAGE IS 17.0 FEET. THE CREEK WILL RISE TO NEAR 14
FEET BY THIS AFTERNOON. A PORTION OF WOODWARD WAY NEAR PEACHTREE
BATTLE ROAD WILL BE COVERED WITH A FOOT OVER WATER.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNTAIN
PARK...SUWANEE...SUGAR HILL...REST HAVEN...NORCROSS...LILBURN...
LAWRENCEVILLE...DULUTH...BUFORD...BERKELEY LAKE...DORAVILLE...
CHAMBLEE...DUNWOODY...JOHNS CREEK...MILTON...SANDY SPRINGS...
ROSWELL...ALPHARETTA...SMYRNA...MARIETTA...KENNESAW...ACWORTH...
HIRAM...DALLAS...WOODSTOCK AND HOLLY SPRINGS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
&&
LAT...LON 3409 8490 3409 8466 3421 8465 3420 8403
3418 8406 3415 8397 3381 8395 3372 8406
3363 8412 3364 8414 3365 8438 3365 8445
3362 8446 3357 8490
$$000
WGUS72 KFFC 121727
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
127 PM EDT MON OCT 12 2009
GAC057-067-089-097-117-121-135-223-121830-
/O.CON.KFFC.FF.W.0048.000000T0000Z-091012T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DOUGLAS GA-DEKALB GA-PAULDING GA-COBB GA-GWINNETT GA-FORSYTH GA-
CHEROKEE GA-FULTON GA-
127 PM EDT MON OCT 12 2009
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM EDT FOR
FULTON...SOUTHERN CHEROKEE...SOUTHERN FORSYTH...GWINNETT...COBB...
EASTERN PAULDING...DEKALB AND DOUGLAS COUNTIES...
AT 115 PM EDT...WIDESPREAD MINOR FLOODING OF AREA CREEKS CONTINUE.
THE HEAVY RAIN EARLIER THIS MORNING HAS MOVED OUT OF THE WARNED AREA
WITH ONLY SCATTERED LIGHT RAIN CONTINUING FOR THE NEXT FEW HOURS.
THE STAGE AT SOPE CREEK NEAR MARIETTA AT 12 PM WAS 13.3 FEET...AND
RISING SLOWLY. MINOR FLOODING WILL CONTINUE. FLOOD STAGE IS 12 FEET.
MINOR FLOODING OF YARDS CONTINUES NEAR LOWER ROSWELL ROAD. THE CREEK
SHOULD CREST AROUND 13.5 FEET THIS AFTERNOON THEN BEGIN TO FALL.
THE STAGE AT NANCY CREEK NEAR ATLANTA AT 12 PM WAS 11.4 FEET...AND
RISING SLOWLY. MINOR FLOODING OF YARDS NEAR THE CREEK WILL CONTINUE.
FLOOD STAGE IS 11 FEET. THE CREEK SHOULD CREST AROUND 11.5 FEET THIS
AFTERNOON THEN BEGIN TO FALL.
THE STAGE AT NORTH FORK PEACHTREE CREEK AT 12 PM AT BUFORD HIGHWAY
WAS 13.9 FEET...AND RISING SLOWLY. FLOOD STAGE IS 12 FEET. MODERATE
FLOODING IS EXPECTED WITH FLOODING OF YARDS...ROADS AND LOW LYING
AREAS NEAR THE CREEK.
THE STAGE AT THE PEACHTREE CREEK AT 12 PM AT NORTHSIDE DRIVE WAS 16.8
FEET...AND RISING SLOWLY. MINOR FLOODING IS FORECAST. FLOOD STAGE IS
17.0 FEET. THE CREEK IS EXPECTED TO CREST NEAR 17.3 FEET THIS
AFTERNOON...THE BEGIN TO FALL. MINOR FLOODING OF WOODWARD WAY CAUSES
THE ROAD TO BECOME IMPASSABLE. FLOODING BEGINS IN YARDS OF HOMES ON
HANOVER WEST DRIVE AND WOODWARD WAY. ATLANTA MEMORIAL PARK IS
FLOODED OUT.
THE STAGE AT THE PEW CREEK NEAR LAWRENCEVILLE AT 12 PM WAS 11.8
FEET...AND NEARLY STEADY. FLOOD STAGE IS 11.0 FEET. MINOR FLOODING
OF THE NATURAL FLOOD PLAIN WILL CONTINUE. THE PARKING LOT OF THE
SARATOGA SWIM AND TENNIS CLUB DOWNSTREAM FROM THE STREAM GAUGE
BEGINS TO FLOOD.
OTHER CREEKS IN MINOR FLOOD ARE NOONDAY...ALLATOONA AND NICKAJACK IN
COBB COUNTY...DICK CREEK IN SOUTH FORSYTH...LEVEL AND CROOKED IN
GWINNETT. THESE CREEK WILL BEGIN TO FALL LATER THIS AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
&&
LAT...LON 3409 8490 3409 8466 3421 8465 3420 8403
3418 8406 3415 8397 3381 8395 3372 8406
3363 8412 3364 8414 3365 8438 3365 8445
3362 8446 3357 8490
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 3:46 AM EDT | Flood Watch | FFC | Baldwin, Banks, Barrow, Bartow, Butts, Carroll and 56 more | 18 hr |
| Oct 12, 9:11 AM EDT | River Flood Warning | FFC | Forsyth, Fulton | 54 hr |
| Oct 12, 9:11 AM EDT | River Flood Warning | FFC | Gwinnett | 28 hr |
| Oct 12, 9:15 AM EDT | Severe Thunderstorm Warning | FFC | Coweta, Heard, Meriwether, Troup | 45 min |
| Oct 12, 10:23 AM EDT | Flash Flood Warning | FFC | Banks, Jackson | 6 hr |
| Oct 12, 11:27 AM EDT | River Flood Warning | FFC | Clarke, Greene, Oconee | 5 days |
| Oct 12, 11:27 AM EDT | River Flood Warning | FFC | Carroll, Coweta, Heard | 50 hr |
| Oct 12, 11:27 AM EDT | River Flood Warning | FFC | Cobb, Douglas | 49 hr |
| Oct 12, 11:27 AM EDT | River Flood Warning | FFC | Newton, Rockdale | 50 hr |
| Oct 12, 11:27 AM EDT | River Flood Warning | FFC | Bibb, Houston, Jones, Monroe, Twiggs | 5 days |
| Oct 12, 11:27 AM EDT | River Flood Warning | FFC | Barrow, Jackson | 48 hr |
| Oct 12, 11:38 AM EDT | River Flood Warning | FFC | Gwinnett, Walton | 12 hr |
| Oct 12, 11:52 AM EDT | River Flood Warning | FFC | Cobb, Fulton | 23 hr |
| Oct 12, 2:05 PM EDT | Tornado Warning | FFC | Laurens | 40 min |
| Oct 12, 2:27 PM EDT | Tornado Warning | FFC | Emanuel, Treutlen | 78 min |
| Oct 12, 2:32 PM EDT | Tornado Warning | FFC | Bleckley, Dodge, Laurens | 43 min |
| Oct 12, 2:35 PM EDT | Areal Flood Warning | FFC | Cherokee, Cobb, DeKalb, Douglas, Forsyth, Fulton and 2 more | 9 hr |
| Oct 12, 4:08 PM EDT | Severe Thunderstorm Warning | FFC | Toombs | 41 min |
| Oct 12, 4:38 PM EDT | River Flood Warning | FFC | DeKalb, Rockdale | 35 hr |
| Oct 12, 4:38 PM EDT | River Flood Warning | FFC | Elbert, Madison, Oglethorpe | 21 hr |
Nearby
Flash Flood Warnings in Georgia, 2009Every flash flood 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.