Alert archive / Georgia / Flash Flood Warnings in 2009

Flash Flood Warning 14, NWS Atlanta, GA

September 15, 2009Gilmer County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 15, 2009, 11:20 AM EDT for Gilmer County, 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
Sep 15, 2009, 11:20 AM EDT (15:20 UTC)
Expired
Sep 15, 2009, 5:15 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Gilmer County, GA

The radar

The Northeast Alabama radar (KHTX), 151 km from the middle of the area, began a volume at 15:20 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, 3.3 hours before the alert went out and 153 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, Peachtre/Fal Fld, GA at 12:00Z on 2009-09-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 995 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2009-09-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939Sfc1 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
995 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
557 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
31 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS52 KFFC 151520
FFWFFC
GAC123-152115-
/O.NEW.KFFC.FF.W.0014.090915T1520Z-090915T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1120 AM EDT TUE SEP 15 2009

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GILMER COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 515 PM EDT TUESDAY

* AT 1106 AM EDT...THE GILMER COUNTY EMA DIRECTOR REPORTED FLOODING
  OF A STREAM THAT PARALLELS THE CHATSWORTH HIGHWAY LEADING INTO     
  ELLIJAY. THE FLOODED STREAM HAS FORCED EVACUATIONS OF AROUND 20    
  HOMES NEAR THE CHATSWORTH HIGHWAY AND HANCOCK DRIVE INTERSECTION
  IN NORTHWEST ELLIJAY.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELLIJAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM 3 TO 4 INCHES OF RAIN THIS MORNING WILL CAUSE 
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. ADDITIONAL RAINFALL AMOUNTS UP TO ONE INCH CAN BE EXPECTED
AS MORE THUNDERSTORMS MOVE NORTH OVER THE WARNED AREA THROUGH THE
AFTERNOON.

HIGH WATER IS MOVING DOWN THE ELLIJAY AND COOSAWATTEE RIVERS IN 
ELLIJAY AT THIS TIME. AT 1100 AM EDT...THE STAGE HEIGHT ON THE 
COOSAWATTEE RIVER OFF OF AMERICAN LEGION ROAD WAS AT 5.0 FEET AND 
RISING. FLOOD STAGE IS 8 FEET. MINOR FLOODING OF THE RIVER IS 
POSSIBLE LATER THIS AFTERNOON. 

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 3485 8443 3478 8430 3463 8444 3461 8465

$$
16
3 follow-up statements
000 
WGUS72 KFFC 151721
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
121 PM EDT TUE SEP 15 2009

GAC123-152115-
/O.CON.KFFC.FF.W.0014.000000T0000Z-090915T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
121 PM EDT TUE SEP 15 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
GILMER COUNTY...

AT 100 PM EDT...THE GILMER COUNTY EMA DIRECTOR REPORTED FLOODING   
OF A STREAM THAT PARALLELS THE CHATSWORTH HIGHWAY LEADING INTO       
THE ELLIJAY RIVER ON THE NORTH SIDE OF ELLIJAY. THE FLOOD WATERS OF 
THE STREAM REACHED THE FOUNDATIONS OF FIVE HOMES NEAR THE CHATSWORTH 
HIGHWAY AND HANCOCK DRIVE INTERSECTION. EVACUATIONS OCCURRED EARLIER
AT THIS LOCATION.

THE SAME STREAM HAS CAUSED ADDITIONAL FLOODING OF A HOME NEAR THE 
COX CREEK ROAD AND BOARDTOWN ROAD INTERSECTION. FLOOD WATERS HAVE
ENTERED THE HOME CAUSING DAMAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM 3 TO 4 INCHES OF RAIN THIS MORNING WILL CAUSE 
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. ADDITIONAL RAINFALL AMOUNTS UP TO ONE INCH CAN BE EXPECTED
AS MORE THUNDERSTORMS MOVE NORTH OVER THE WARNED AREA THROUGH THE
AFTERNOON.

HIGH WATER IS MOVING DOWN THE ELLIJAY AND COOSAWATTEE RIVERS IN 
ELLIJAY AT THIS TIME. AT 1245 PM EDT...THE STAGE HEIGHT ON THE 
COOSAWATTEE RIVER OFF OF AMERICAN LEGION ROAD WAS AT 6.0 FEET AND 
RISING. FLOOD STAGE IS 8 FEET. MINOR FLOODING OF THE RIVER IS 
POSSIBLE LATER THIS AFTERNOON. 

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 3485 8443 3478 8430 3463 8444 3461 8465

$$
16
000 
WGUS72 KFFC 151947
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
347 PM EDT TUE SEP 15 2009

GAC123-152115-
/O.CON.KFFC.FF.W.0014.000000T0000Z-090915T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
347 PM EDT TUE SEP 15 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
GILMER COUNTY...

AT 330 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE OCCASIONAL THUNDERSTORMS WITH HEAVY RAIN PASSING OVER THE 
WARNED AREA THIS AFTERNOON. TOTAL RAINFALL AMOUNTS SINCE THE RAIN 
BEGAN EARLY THIS MORNING WERE RANGING FROM 3 TO 5 INCHES. ANOTHER 
AREA OF THUNDERSTORMS FROM ROME TO CANTON WILL CONTINUE MOVING NORTH 
AND WILL AFFECT GILMER COUNTY WITH AN ADDITIONAL ONE HALF INCH LATE 
THIS AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THE 3 TO 5 INCHES OF RAIN WILL CAUSE 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. 

HIGH WATER IS MOVING DOWN THE ELLIJAY...CARTECAY AND COOSAWATTEE 
RIVERS IN THE ELLIJAY AREA AT THIS TIME. 

AT 330 PM EDT...THE STAGE HEIGHT ON THE CARTECAY RIVER OFF OF 
GEORGIA HIGHWAY 52 IN EAST ELLIJAY WAS AT 4.6 FEET AND RISING. FLOOD 
STAGE IS 8 FEET. THE RIVER SHOULD CREST BELOW FLOOD STAGE LATE THIS
AFTERNOON. 

AT 245 PM EDT...THE STAGE HEIGHT ON THE COOSAWATTEE RIVER OFF OF 
AMERICAN LEGION ROAD IN SOUTHWEST ELLIJAY WAS AT 5.5 FEET AND SLOWLY 
FALLING. FLOOD STAGE IS 8 FEET. THE RIVER CRESTED AT 6.0 FEET EARLY 
THIS AFTERNOON AND WILL REMAIN NEAR BANKFULL FOR SEVERAL HOURS. 

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. MOVE 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.

&&

LAT...LON 3485 8443 3478 8430 3463 8444 3461 8465

$$
16
000 
WGUS72 KFFC 152119
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
519 PM EDT TUE SEP 15 2009

GAC123-152115-
/O.EXP.KFFC.FF.W.0014.000000T0000Z-090915T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
519 PM EDT TUE SEP 15 2009

...THE FLASH FLOOD WARNING EXPIRED AT 515 PM EDT FOR GILMER COUNTY...

AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THE RAIN HAD DIMINISHED OVER THE WARNED AREA. TOTAL RAINFALL 
AMOUNTS OF 3 TO 5 INCHES HAS OCCURRED SINCE EARLY THIS MORNING.
AN AREA OF SHOWERS WITH LIGHTER AMOUNTS OF RAIN IS SOUTH OF 
GILMER COUNTY AND WILL GRADUALLY MOVE NORTH DURING THE EARLY 
EVENING HOURS. ADDITIONAL RAINFALL AMOUNTS OF ONE QUARTER INCH OR 
LESS CAN BE EXPECTED. NO ADDITIONAL FLOODING IS EXPECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THE 3 TO 5 INCHES OF RAIN CAUSED SOME  
FLOODING OF SMALL CREEKS AND STREAMS EARLIER TODAY...BUT ARE
NOW RECEDING. 

HIGH WATER CONTINUES ON THE ELLIJAY...CARTECAY AND COOSAWATTEE 
RIVERS IN THE ELLIJAY AREA AT THIS TIME. 

AT 430 PM EDT...THE STAGE HEIGHT ON THE CARTECAY RIVER OFF OF 
GEORGIA HIGHWAY 52 IN EAST ELLIJAY WAS AT 5.3 FEET AND RISING
SLOWLY. FLOOD STAGE IS 8 FEET. THE RIVER WILL CREST BELOW FLOOD 
STAGE THIS EVENING. 

AT 445 PM EDT...THE STAGE HEIGHT ON THE COOSAWATTEE RIVER OFF OF 
AMERICAN LEGION ROAD IN SOUTHWEST ELLIJAY WAS AT 5.7 FEET AND RISING
SLOWLY. FLOOD STAGE IS 8 FEET. THE RIVER CRESTED AT 6.0 FEET EARLIER 
THIS AFTERNOON AND WILL REMAIN NEAR BANKFULL FOR THE NEXT FEW HOURS. 

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. MOVE 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.

LAT...LON 3485 8443 3478 8430 3463 8444 3461 8465

$$
16

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.