Alert archive / Georgia / Flash Flood Warnings in 2009

Flash Flood Warning 16, NWS Atlanta, GA

September 16, 2009Morgan County, Newton County, Georgia

NWS Atlanta, GA issued this flash flood warning at Sep 16, 2009, 8:19 PM EDT for Morgan County, Newton County, Georgia. It was in force for 4 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 16, 2009, 8:19 PM EDT (00:19 UTC)
Expired: Sep 16, 2009, 11:58 PM EDT
In force: 4 hr
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Flood severity: None

Counties Morgan County, GA, Newton County, GA

The radar

The Atlanta radar (KFFC), 86 km from the middle of the area, began a volume at 00:19 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 00:00Z, 0.3 hours before the alert went out and 80 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1802 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 559 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 63 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.

000 
WGUS52 KFFC 170019
FFWFFC
GAC211-217-170515-
/O.NEW.KFFC.FF.W.0016.090917T0019Z-090917T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
819 PM EDT WED SEP 16 2009

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL MORGAN COUNTY IN NORTH CENTRAL GEORGIA
  EAST CENTRAL NEWTON COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 115 AM EDT

* AT 807 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH HEAVY RAIN THAT MAY BE CAUSING FLASH FLOODING   
  OF SMALL STREAMS AND CREEKS IN THE WARNED AREA. RAINFALL AMOUNTS
  UP TO THREE INCHES HAVE OCCURRED SINCE 600 PM EDT IN THE HUNNICUT
  CREEK BASIN IN WEST MORGAN COUNTY. ANOTHER INCH OR TWO OF RAIN
  CAN BE EXPECTED OVER THE SAME AREA IN THE NEXT FEW HOURS.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 3348 8353 3348 8360 3352 8367 3352 8368
      3349 8369 3350 8370 3348 8374 3348 8380
      3362 8376 3363 8371 3361 8370 3360 8368
      3365 8364 3367 8354

$$
16

2 follow-up statements

000 
WGUS72 KFFC 170117
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
917 PM EDT WED SEP 16 2009

GAC211-217-170515-
/O.CON.KFFC.FF.W.0016.000000T0000Z-090917T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEWTON GA-MORGAN GA-
917 PM EDT WED SEP 16 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM EDT FOR WEST
CENTRAL MORGAN AND EAST CENTRAL NEWTON COUNTIES...

AT 905 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED     
THUNDERSTORMS WITH OCCASIONAL HEAVY RAIN THAT MAY BE CAUSING FLASH 
FLOODING OF SMALL STREAMS AND CREEKS IN THE WARNED AREA. RAINFALL 
AMOUNTS OF 3 TO 4 INCHES HAVE OCCURRED SINCE 600 PM EDT IN THE 
HUNNICUT CREEK AND LITTLE RIVER BASINS IN WEST MORGAN COUNTY. 
ANOTHER HALF INCH CAN BE EXPECTED OVER THE SAME AREA IN THE NEXT 
FEW HOURS.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RUTLEDGE.

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 3348 8353 3348 8360 3352 8367 3352 8368
      3349 8369 3350 8370 3348 8374 3348 8380
      3362 8376 3363 8371 3361 8370 3360 8368
      3365 8364 3367 8354

$$
16

000 
WGUS72 KFFC 170358
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1158 PM EDT WED SEP 16 2009

GAC211-217-170358-
/O.CAN.KFFC.FF.W.0016.000000T0000Z-090917T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEWTON GA-MORGAN GA-
1158 PM EDT WED SEP 16 2009

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WEST CENTRAL MORGAN
AND EAST CENTRAL NEWTON COUNTIES...

AT 1145 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WERE DIMINISHING OVER THE WARNED AREA. RAINFALL 
AMOUNTS OF 3 TO 4 INCHES HAVE OCCURRED DURING THE EVENING HOURS  
IN THE HUNNICUT CREEK AND LITTLE RIVER BASINS IN WEST MORGAN COUNTY. 
COUNTY OFFICIALS HAVE NOT INDICATED ANY SIGNIFICANT FLOODING 
PROBLEMS IN WEST CENTRAL MORGAN AND EAST CENTRAL NEWTON AT THIS TIME 
SO 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.

LAT...LON 3348 8353 3348 8360 3352 8367 3352 8368
      3349 8369 3350 8370 3348 8374 3348 8380
      3362 8376 3363 8371 3361 8370 3360 8368
      3365 8364 3367 8354

$$
16

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 1:20 PM EDT	Flood Watch	FFC	Baldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more	5 days
Sep 17, 4:09 PM EDT	Flash Flood Warning	FFC	Bibb	3 hr
Sep 17, 4:48 PM EDT	Flash Flood Warning	FFC	Forsyth, Fulton	3 hr
Sep 17, 5:57 PM EDT	Flash Flood Warning	FFC	Morgan	6 hr
Sep 17, 6:59 PM EDT	Areal Flood Warning	FFC	Bibb	4 hr
Sep 17, 7:54 PM EDT	Flash Flood Warning	FFC	Greene, Oglethorpe, Taliaferro, Wilkes	6 hr

Nearby

Flash Flood Warnings in Georgia, 2009 Every 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.