Alert archive / Georgia / Flash Flood Warnings in 2012
Flash Flood Warning 2, NWS Atlanta, GA
NWS Atlanta, GA issued this flash flood warning at Jan 21, 2012, 10:50 AM EST for DeKalb County, Fulton County, Georgia. It was in force for 5 hr. 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
- Jan 21, 2012, 10:50 AM EST (15:50 UTC)
- Expired
- Jan 21, 2012, 3:52 PM EST
- In force
- 5 hr
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Flood severity
- None
Counties DeKalb County, GA, Fulton County, GA
The radar
The Atlanta radar (KFFC), 41 km from the middle of the area, began a volume at 15:53 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 |
|---|---|---|---|
| Jan 21, 12:00 PM EST | FLASH FLOOD | 4 E Decatur, GA | THE WATER LEVEL AT A USGS STREAM GAGE EXCEEDED THE FLOOD STAGE OF 12 FEET ON SNAPFINGER CREEK AT REDAN ROAD. MINOR FLOODING OCCURRED. |
| Jan 21, 12:00 PM EST | FLASH FLOOD | 4 S Atlanta, GA | AROUND 7 ROADS HAD MINOR FLOODING DUE TO TRIBUTARIES AND STREAMS IN THE UPPER SOUTH RIVER AND INTRENCHMENT CREEK BASINS OVERFLOWING. |
| Jan 21, 12:00 PM EST | FLASH FLOOD | 5 Se Atlanta, GA | THE WATER LEVEL AT A USGS STREAM GAGE EXCEEDED FLOOD STAGE OF 11 FEET ON INTRENCHMENT CREEK AT CONSTITUTION ROAD. MINOR FLOODING OCCURRED. |
| Jan 21, 12:07 PM EST | FLASH FLOOD | 5 Ne Atlanta, GA | THE WATER LEVEL AT A USGS STREAM GAGE EXCEEDED FLOOD STAGE OF 12 FEET ON THE SOUTH FORK PEACHTREE CREEK AT JOHNSON ROAD. MINOR FLOODING OCCURRED. |
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 12:00Z, 3.8 hours before the alert went out and 37 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
- 238 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 505 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 265 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
037
WGUS52 KFFC 211550
FFWFFC
GAC089-121-212145-
/O.NEW.KFFC.FF.W.0002.120121T1550Z-120121T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1050 AM EST SAT JAN 21 2012
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
DEKALB COUNTY IN NORTH CENTRAL GEORGIA
CENTRAL FULTON COUNTY IN NORTH CENTRAL GEORGIA
* UNTIL 445 PM EST
* AT 1045 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUCKHEAD...
PINE LAKE...AVONDALE ESTATES...DECATUR...STONE MOUNTAIN...
CLARKSTON...TUCKER...DRUID HILLS...MIDTOWN AND ATLANTA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA OVER THE FEW HOURS. THESE AMOUNTS OVER AN ALREADY
SATURATED GROUND COULD RESULT IN FLOODING.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.
IF YOU SEE SIGNIFICANT FLOODING 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 3366 8466 3368 8466 3381 8449 3388 8421
3375 8402 3372 8406 3362 8412 3365 8418
3365 8422 3363 8424 3365 8424 3365 8446
3363 8446 3364 8474
$$3 follow-up statements
545
WGUS72 KFFC 211744
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1244 PM EST SAT JAN 21 2012
GAC089-121-212145-
/O.CON.KFFC.FF.W.0002.000000T0000Z-120121T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEKALB GA-FULTON GA-
1244 PM EST SAT JAN 21 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM EST FOR
CENTRAL FULTON AND DEKALB COUNTIES...
AT 1231 PM EST...THUNDERSTORMS WITH HEAVY RAIN HAVE PRODUCED FROM 2
TO 3.5 INCHES OF RAIN SINCE 900 AM EST THIS MORNING ACROSS THE
WARNED AREA. THE SOUTH FORK PEACHTREE CREEK...SNAPFINGER CREEK AND
INTRENCHMENT CREEK IN DEKALB COUNTY HAVE RAPIDLY EXCEEDED THEIR
FLOOD STAGES SINCE NOON TODAY. FLASH FLOODING OF OTHER SMALLER
CREEKS IN DEKALB COUNTY WILL BE POSSIBLE.
THE PEACHTREE CREEK AND PROCTOR CREEK IN FULTON COUNTY HAVE REACHED
BANKFULL CONDITIONS SINCE NOON. ADDITIONAL RISES TO NEAR THEIR FLOOD
STAGES WILL BE POSSIBLE. PERIODS OF LIGHT RAIN WILL CONTINUE OVER
THE WARNED AREA FOR A FEW MORE HOURS.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LITHONIA...
PINE LAKE...AVONDALE ESTATES...DECATUR...STONE MOUNTAIN...
CLARKSTON...TUCKER...DRUID HILLS...GRANT PARK-ZOO ATLANTA...MIDTOWN
AND ATLANTA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 PM EST SATURDAY AFTERNOON
FOR NORTHERN GEORGIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
800 PM EST SATURDAY EVENING FOR GEORGIA.
&&
LAT...LON 3366 8466 3368 8466 3381 8449 3388 8421
3375 8402 3372 8406 3362 8412 3365 8418
3365 8422 3363 8424 3365 8424 3365 8446
3363 8446 3364 8474
$$
16711
WGUS72 KFFC 211957
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
257 PM EST SAT JAN 21 2012
GAC121-212030-
/O.CAN.KFFC.FF.W.0002.000000T0000Z-120121T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FULTON GA-
257 PM EST SAT JAN 21 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL FULTON
COUNTY...
THUNDERSTORMS WITH HEAVY RAIN PRODUCED 2 TO 3.5 INCHES OF RAIN
EARLIER TODAY. THE RAIN HAS MOVED EAST OF THE WARNED AREA. THE EMA
OPERATIONS OFFICER FOR FULTON COUNTY INDICATED SOME FLOODING OF
ROADS IN SOUTH ATLANTA HAD OCCURRED EARLIER...BUT THE WATER HAD
SINCE RECEDED. CONSEQUENTLY...THE FLASH FLOOD WARNING WILL BE
CANCELLED.
IF YOU SEE SIGNIFICANT FLOODING 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 800 PM EST SATURDAY EVENING
FOR SOUTHERN GEORGIA.
LAT...LON 3388 8421 3377 8407 3375 8402 3372 8406
3362 8412 3365 8418 3365 8422 3363 8424
3365 8424 3365 8435 3384 8435 3385 8435
$$
GAC089-212145-
/O.CON.KFFC.FF.W.0002.000000T0000Z-120121T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEKALB GA-
257 PM EST SAT JAN 21 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM EST FOR
DEKALB COUNTY...
AT 241 PM EST...THE RAIN HAS ENDED OVER THE WARNED AREA. FLASH
FLOODING HAS BEEN RECORDED ON THE SOUTH FORK PEACHTREE CREEK...THE
SNAPFINGER CREEK...AND ON THE INTRENCHMENT CREEK TODAY.
THE SOUTH FORK PEACHTREE CREEK AT JOHNSON ROAD CREST AT 13.4 FEET
AT 100 PM EST. FLOOD STAGE IS 12 FEET. IT IS AT 11.7 FEET AND
FALLING.
THE SNAPFINGER CREEK AT REDAN ROAD CREST AT 12.8 FEET AT 115 PM EST.
FLOOD STAGE IS 12 FEET. IT IS AT 12.1 FEET AND FALLING.
THE INTRENCHMENT CREEK AT CONSTITUTION ROAD CREST AT 11.5 FEET AT
1215 PM EST. FLOOD STAGE IS 11 FEET. IT IS AT 8.3 FEET AND FALLING.
MINOR FLOODING OF YARDS AND LOW LYING AREAS NEAR THE CREEKS WERE
COMMON.
THE FLASH FLOOD WARNING WILL CONTINUE FOR ANOTHER HOUR OR SO GIVING
MORE TIME FOR THE FLOOD WATERS TO RECEDE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT
USING HASHTAG GAWX.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EST SATURDAY EVENING
FOR SOUTHERN GEORGIA.
&&
LAT...LON 3388 8421 3377 8407 3375 8402 3372 8406
3362 8412 3365 8418 3365 8422 3363 8424
3365 8424 3365 8435 3384 8435 3385 8435
$$
16979
WGUS72 KFFC 212052
FFSFFC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
352 PM EST SAT JAN 21 2012
GAC089-212120-
/O.CAN.KFFC.FF.W.0002.000000T0000Z-120121T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DEKALB GA-
352 PM EST SAT JAN 21 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR DEKALB COUNTY...
THE RAIN HAS ENDED OVER THE WARNED AREA. FLASH FLOODING HAS BEEN
RECORDED ON THE SOUTH FORK PEACHTREE CREEK...THE SNAPFINGER
CREEK...AND ON THE INTRENCHMENT CREEK TODAY.
THE SOUTH FORK PEACHTREE CREEK AT JOHNSON ROAD CREST AT 13.4 FEET AT
100 PM EST. FLOOD STAGE IS 12 FEET. IT WAS AT 10.4 FEET AND FALLING.
THE SNAPFINGER CREEK AT REDAN ROAD CREST AT 12.8 FEET AT 115 PM EST.
FLOOD STAGE IS 12 FEET. IT WAS AT 11.1 FEET AND FALLING.
THE INTRENCHMENT CREEK AT CONSTITUTION ROAD CREST AT 11.5 FEET AT
1215 PM EST. FLOOD STAGE IS 11 FEET. IT WAS AT 6 FEET AND FALLING.
THE PREVIOUS FLOOD WATERS WILL CONTINUE TO RECEDE.
CONSEQUENTLY...THE FLASH FLOOD WARNING WILL BE CANCELLED.
IF YOU SEE SIGNIFICANT FLOODING 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 800 PM EST SATURDAY EVENING
FOR SOUTHERN GEORGIA.
LAT...LON 3388 8421 3377 8407 3375 8402 3372 8406
3362 8412 3365 8418 3365 8422 3363 8424
3365 8424 3365 8435 3384 8435 3385 8435
$$
16The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 7:19 AM EST | Special Weather Statement | FFC | Carroll, Douglas, Fulton | 41 min |
| Jan 21, 8:00 AM EST | Special Weather Statement | FFC | Carroll, Douglas, Fulton | 45 min |
| Jan 21, 8:18 AM EST | Special Weather Statement | FFC | Murray | 27 min |
| Jan 21, 8:43 AM EST | Special Weather Statement | FFC | Douglas, Newton, Rockdale | 47 min |
| Jan 21, 8:56 AM EST | Special Weather Statement | FFC | Chattooga, Gordon, Murray, Whitfield | 34 min |
| Jan 21, 9:27 AM EST | Special Weather Statement | FFC | Fannin, Union | 33 min |
| Jan 21, 9:47 AM EST | Special Weather Statement | FFC | Floyd | 43 min |
| Jan 21, 10:04 AM EST | Special Weather Statement | FFC | Carroll, Douglas, Fulton | 41 min |
| Jan 21, 10:19 AM EST | Flash Flood Warning | FFC | Carroll, Douglas | 4 hr |
| Jan 21, 10:22 AM EST | Severe Thunderstorm Warning | FFC | DeKalb, Fulton | 38 min |
| Jan 21, 10:24 AM EST | Special Weather Statement | FFC | Dawson | 36 min |
| Jan 21, 10:43 AM EST | Special Weather Statement | FFC | Forsyth, Hall | 32 min |
| Jan 21, 10:50 AM EST | Special Weather Statement | FFC | DeKalb, Rockdale, Walton | 40 min |
| Jan 21, 10:59 AM EST | Severe Thunderstorm Warning | FFC | Haralson, Paulding | 46 min |
| Jan 21, 11:07 AM EST | Flash Flood Watch | FFC | Barrow, Carroll, Clayton, Cobb, Coweta, DeKalb and 13 more | 4 hr |
| Jan 21, 11:22 AM EST | Severe Thunderstorm Warning | FFC | Cobb, DeKalb, Fulton | 38 min |
| Jan 21, 11:27 AM EST | Special Weather Statement | FFC | Banks, Jackson, Madison | 33 min |
| Jan 21, 11:28 AM EST | Special Weather Statement | FFC | Carroll, Douglas, Fulton | 47 min |
| Jan 21, 11:32 AM EST | Special Weather Statement | FFC | Oconee, Walton | 28 min |
| Jan 21, 11:32 AM EST | Severe Thunderstorm Warning | FFC | Carroll, Douglas, Fulton | 28 min |
| Jan 21, 11:34 AM EST | Tornado Warning | FFC | Coweta, Heard | 41 min |
| Jan 21, 11:44 AM EST | Severe Thunderstorm Warning | FFC | Clarke, Greene, Morgan, Oconee, Oglethorpe, Walton | 46 min |
| Jan 21, 11:57 AM EST | Special Weather Statement | FFC | Meriwether, Troup | 33 min |
| Jan 21, 12:04 PM EST | Flash Flood Warning | FFC | Clayton | 2 hr |
| Jan 21, 12:16 PM EST | Tornado Warning | FFC | Coweta, Fayette | 28 min |
| Jan 21, 12:26 PM EST | Severe Thunderstorm Warning | FFC | Lamar, Meriwether, Pike, Upson | 49 min |
| Jan 21, 12:29 PM EST | Special Weather Statement | FFC | Oglethorpe, Wilkes | 46 min |
| Jan 21, 12:38 PM EST | Severe Thunderstorm Warning | FFC | Butts, Clayton, Henry, Spalding | 52 min |
| Jan 21, 12:43 PM EST | Special Weather Statement | FFC | Morgan | 32 min |
| Jan 21, 1:00 PM EST | Severe Thunderstorm Warning | FFC | Bibb, Jones, Lamar, Monroe, Upson | 45 min |
| Jan 21, 1:05 PM EST | Severe Thunderstorm Warning | FFC | Jasper, Newton | 40 min |
| Jan 21, 1:11 PM EST | Special Weather Statement | FFC | Harris | 34 min |
| Jan 21, 1:20 PM EST | Tornado Warning | FFC | Harris | 40 min |
| Jan 21, 1:30 PM EST | Special Weather Statement | FFC | Upson | 30 min |
| Jan 21, 1:44 PM EST | Severe Thunderstorm Warning | FFC | Baldwin, Hancock, Jasper, Jones, Putnam, Washington and 1 more | 46 min |
| Jan 21, 1:57 PM EST | Tornado Warning | FFC | Talbot | 32 min |
| Jan 21, 1:59 PM EST | Special Weather Statement | FFC | Muscogee | 31 min |
| Jan 21, 2:05 PM EST | Severe Thunderstorm Warning | FFC | Harris, Muscogee | 25 min |
| Jan 21, 2:14 PM EST | Severe Thunderstorm Warning | FFC | Upson | 34 min |
| Jan 21, 2:21 PM EST | Tornado Warning | FFC | Baldwin, Hancock, Washington, Wilkinson | 39 min |
| Jan 21, 2:27 PM EST | Severe Thunderstorm Warning | FFC | Bibb, Crawford, Peach, Taylor | 48 min |
| Jan 21, 2:32 PM EST | Special Weather Statement | FFC | Taylor | 28 min |
| Jan 21, 2:59 PM EST | Special Weather Statement | FFC | Jefferson, Washington | 31 min |
| Jan 21, 2:59 PM EST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion, Muscogee, Schley | 46 min |
| Jan 21, 3:06 PM EST | Severe Thunderstorm Warning | FFC | Macon, Taylor | 39 min |
| Jan 21, 3:07 PM EST | Tornado Warning | FFC | Jefferson, Washington | 38 min |
| Jan 21, 3:20 PM EST | Special Weather Statement | FFC | Bleckley, Houston, Peach, Twiggs | 25 min |
| Jan 21, 3:28 PM EST | Tornado Warning | FFC | Macon | 47 min |
| Jan 21, 3:53 PM EST | Tornado Warning | FFC | Dooly, Houston | 37 min |
| Jan 21, 4:00 PM EST | Severe Thunderstorm Warning | FFC | Emanuel, Johnson | 60 min |
| Jan 21, 4:02 PM EST | Severe Thunderstorm Warning | FFC | Chattahoochee, Marion | 43 min |
| Jan 21, 4:18 PM EST | Severe Thunderstorm Warning | FFC | Pulaski, Wilcox | 42 min |
| Jan 21, 4:27 PM EST | Severe Thunderstorm Warning | FFC | Dooly, Houston | 18 min |
| Jan 21, 4:29 PM EST | Special Weather Statement | FFC | Stewart | 31 min |
| Jan 21, 4:36 PM EST | Tornado Warning | FFC | Pulaski | 24 min |
| Jan 21, 4:43 PM EST | Severe Thunderstorm Warning | FFC | Stewart, Webster | 62 min |
| Jan 21, 4:49 PM EST | Severe Thunderstorm Warning | FFC | Dodge | 41 min |
| Jan 21, 4:50 PM EST | Severe Thunderstorm Warning | FFC | Marion, Schley, Sumter | 39 min |
| Jan 21, 5:24 PM EST | Special Weather Statement | FFC | Montgomery, Telfair, Wheeler | 66 min |
| Jan 21, 5:27 PM EST | Severe Thunderstorm Warning | FFC | Telfair, Wheeler | 48 min |
| Jan 21, 5:33 PM EST | Severe Thunderstorm Warning | FFC | Dodge, Wilcox | 15 min |
| Jan 21, 5:39 PM EST | Special Weather Statement | FFC | Crisp | 66 min |
| Jan 21, 5:50 PM EST | Special Weather Statement | FFC | Telfair, Wilcox | 40 min |
| Jan 21, 6:12 PM EST | Severe Thunderstorm Warning | FFC | Montgomery, Toombs, Wheeler | 33 min |
Nearby
Flash Flood Warnings in Georgia, 2012Every flash flood 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.