Alert archive / Georgia / Flash Flood Warnings in 2019

Flash Flood Warning 21, NWS Atlanta, GA

June 18, 2019Jackson County, Madison County, Georgia

NWS Atlanta, GA issued this flash flood warning at Jun 18, 2019, 5:35 PM EDT for Jackson County, Madison County, Georgia. It was in force for 6 hr. 1 report 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
Jun 18, 2019, 5:35 PM EDT (21:35 UTC)
Expired
Jun 18, 2019, 11:30 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Jackson County, GA, Madison County, GA

The radar

The Atlanta radar (KFFC), 128 km from the middle of the area, began a volume at 21:34 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

TimeReportWhereRemark
Jun 18, 7:00 PM EDTFLASH FLOOD1 Wnw Center, GANEW KINGS BRIDGE ROAD HAS BEEN CLOSED AT SHANKLES CREEK BETWEEN SAWDUST TR AND TOMMY BARNETT RD DUE TO EROSION FROM FLOOD WATERS AROUND THE BRIDGE/CULVERT COMPROMISING ITS STRUCTURAL INTEGRITY.

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, 9.6 hours before the alert went out and 122 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 2019-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 776 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2019-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
776 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

077 
WGUS52 KFFC 182135
FFWFFC
GAC157-195-190330-
/O.NEW.KFFC.FF.W.0021.190618T2135Z-190619T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
535 PM EDT Tue Jun 18 2019

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Southeastern Jackson County in northeastern Georgia...
  Southwestern Madison County in northeastern Georgia...

* Until 1130 PM EDT.

* At 534 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Two to three inches of rain 
  have already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Jefferson, Arcade, Nicholson, Ila, Neese and Bear Creek Reservoir. 

Additional rainfall amounts of one to two inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't 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.

&&

LAT...LON 3420 8327 3409 8322 3404 8336 3404 8339
      3403 8339 3399 8348 3400 8350 3398 8351
      3397 8354 3403 8356 3404 8357 3404 8360
      3405 8362 3410 8366

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 8:02 PM EDTSpecial Weather StatementFFCUnion28 min
Jun 17, 8:09 PM EDTSpecial Weather StatementFFCBarrow36 min
Jun 17, 8:16 PM EDTSpecial Weather StatementFFCDeKalb29 min
Jun 17, 8:22 PM EDTSpecial Weather StatementFFCBanks23 min
Jun 17, 8:55 PM EDTSpecial Weather StatementFFCWhite35 min
Jun 18, 1:06 AM EDTSpecial Weather StatementFFCUnion24 min
Jun 18, 1:35 PM EDTSpecial Weather StatementFFCCrawford25 min
Jun 18, 1:41 PM EDTSpecial Weather StatementFFCMadison34 min
Jun 18, 2:53 PM EDTSpecial Weather StatementFFCWebster52 min
Jun 18, 2:57 PM EDTSpecial Weather StatementFFCHall33 min
Jun 18, 3:08 PM EDTSpecial Weather StatementFFCNewton, Rockdale37 min
Jun 18, 3:28 PM EDTSevere Thunderstorm WarningFFCDeKalb, Gwinnett, Newton, Rockdale, Walton27 min
Jun 18, 3:38 PM EDTSpecial Weather StatementFFCChattahoochee, Harris, Muscogee37 min
Jun 18, 3:42 PM EDTSpecial Weather StatementFFCHall33 min
Jun 18, 4:15 PM EDTSpecial Weather StatementFFCChattahoochee, Marion, Muscogee, Talbot, Taylor30 min
Jun 18, 4:30 PM EDTSpecial Weather StatementFFCPike30 min
Jun 18, 4:36 PM EDTSevere Thunderstorm WarningFFCPike, Spalding24 min
Jun 18, 4:43 PM EDTSpecial Weather StatementFFCFayette17 min
Jun 18, 4:46 PM EDTSpecial Weather StatementFFCCrawford, Talbot29 min
Jun 18, 5:02 PM EDTSpecial Weather StatementFFCHenry, Spalding13 min
Jun 18, 5:10 PM EDTSevere Thunderstorm WarningFFCBibb, Crawford, Lamar, Monroe, Taylor, Upson50 min
Jun 18, 5:15 PM EDTSpecial Weather StatementFFCMorgan30 min
Jun 18, 5:47 PM EDTSpecial Weather StatementFFCBibb, Twiggs28 min
Jun 18, 5:50 PM EDTSpecial Weather StatementFFCOglethorpe25 min
Jun 18, 5:52 PM EDTSpecial Weather StatementFFCCrisp53 min
Jun 18, 6:17 PM EDTSpecial Weather StatementFFCOglethorpe43 min
Jun 18, 6:22 PM EDTSpecial Weather StatementFFCPutnam23 min
Jun 18, 6:27 PM EDTSpecial Weather StatementFFCJefferson33 min
Jun 18, 6:28 PM EDTSpecial Weather StatementFFCTwiggs, Wilkinson32 min
Jun 18, 6:44 PM EDTSpecial Weather StatementFFCTaliaferro31 min
Jun 18, 6:53 PM EDTSpecial Weather StatementFFCPutnam37 min
Jun 18, 7:08 PM EDTSpecial Weather StatementFFCWilkes22 min
Jun 18, 7:10 PM EDTSpecial Weather StatementFFCTaliaferro20 min
Jun 18, 7:47 PM EDTSpecial Weather StatementFFCWarren13 min

Nearby

Flash Flood Warnings in Georgia, 2019Every flash flood warning in 2019

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.