Alert archive / Georgia / Flash Flood Warnings in 2015

Flash Flood Warning 5, NWS Atlanta, GA

April 14, 2015Houston County, Georgia

NWS Atlanta, GA issued this flash flood warning at Apr 14, 2015, 9:11 PM EDT for Houston 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
Apr 14, 2015, 9:11 PM EDT (01:11 UTC)
Expired
Apr 15, 2015, 3:00 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

County Houston County, GA

The radar

The Robins AFB radar (KJGX), 54 km from the middle of the area, began a volume at 01:13 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, 1.2 hours before the alert went out and 128 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 00:00Z on 2015-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 610 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 00:00Z on 2015-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.193958Sfc1 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
610 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1067 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
22 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.

029 
WGUS52 KFFC 150111
FFWFFC
GAC153-150700-
/O.NEW.KFFC.FF.W.0005.150415T0111Z-150415T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
911 PM EDT TUE APR 14 2015

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN HOUSTON COUNTY IN CENTRAL GEORGIA...

* UNTIL 300 AM EDT
    
* AT 907 PM EDT...DOPPLER RADAR INDICATED HEAVY RAINFALL HAD FALLEN 
  OVER THE WARNED AREA. SINCE 6 PM RAINFALL AMOUNTS OF 2.5 TO 3 
  INCHES HAVE FALLEN. FLASH FLOODING IS EXPECTED.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA OVER THE NEXT SEVERAL HOURS. RISES OF SMALL CREEKS AND 
STREAMS ARE EXPECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD 
DEATHS OCCUR IN VEHICLES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS 
HARDER TO RECOGNIZE THE DANGERS OF FLOODING.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6 OR TWEET US YOUR WARNING AT
NWSATLANTA.

&&

LAT...LON 3230 8385 3236 8385 3236 8386 3238 8386
      3238 8384 3242 8384 3251 8370 3242 8363

$$
2 follow-up statements
052 
WGUS72 KFFC 150323
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1123 PM EDT TUE APR 14 2015

GAC153-150700-
/O.CON.KFFC.FF.W.0005.000000T0000Z-150415T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOUSTON GA-
1123 PM EDT TUE APR 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 AM EDT FOR
SOUTHWESTERN HOUSTON COUNTY...

AT 1122 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE HEAVY RAIN HAD 
FALLEN OVER THE WARNED AREA. RAINFALL AMOUNTS OF 2.5 TO 3 INCHES 
HAVE OCCURRED SINCE 6 PM. WITH ADDITIONAL OVERNIGHT RAINFALL...FLASH 
FLOODING IS STILL POSSIBLE.

ADDITIONAL RAINFALL AMOUNTS OF UP TO 1 INCH ARE POSSIBLE IN THE 
WARNED AREA OVER THE NEXT SEVERAL HOURS. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. TURN AROUND...DONT DROWN WHEN ENCOUNTERING 
FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

IF YOU SEE SIGNIFICANT FLOODING CALL THE NATIONAL WEATHER SERVICE
TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6 OR TWEET US YOUR REPORT AT
NWSATLANTA.

&&

LAT...LON 3230 8385 3236 8385 3236 8386 3238 8386
      3238 8384 3242 8384 3251 8370 3242 8363

$$
830 
WGUS72 KFFC 150440
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1240 AM EDT WED APR 15 2015

GAC153-150449-
/O.CAN.KFFC.FF.W.0005.000000T0000Z-150415T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOUSTON GA-
1240 AM EDT WED APR 15 2015

...THE FLASH FLOOD WARNING FOR SOUTHWEST HOUSTON COUNTY IS
CANCELLED...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

LAT...LON 3230 8385 3236 8385 3236 8386 3238 8386
      3238 8384 3242 8384 3251 8370 3242 8363

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 14, 8:17 PM EDTSpecial Weather StatementFFCCrisp, Dooly43 min
Apr 14, 8:18 PM EDTSpecial Weather StatementFFCHouston57 min
Apr 14, 8:20 PM EDTSpecial Weather StatementFFCDouglas, Fulton25 min
Apr 14, 8:36 PM EDTSpecial Weather StatementFFCChattooga, Floyd24 min
Apr 14, 8:57 PM EDTSpecial Weather StatementFFCBleckley, Dodge, Laurens48 min
Apr 14, 9:23 PM EDTSpecial Weather StatementFFCWilkinson22 min
Apr 14, 9:44 PM EDTSpecial Weather StatementFFCJohnson46 min
Apr 14, 10:20 PM EDTSpecial Weather StatementFFCMontgomery, Treutlen, Wheeler40 min
Apr 14, 10:32 PM EDTSpecial Weather StatementFFCEmanuel, Johnson28 min
Apr 14, 10:45 PM EDTSevere Thunderstorm WarningFFCEmanuel45 min

Nearby

Flash Flood Warnings in Georgia, 2015Every flash flood warning in 2015

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.