Alert archive / Georgia / Flash Flood Warnings in 2018

Flash Flood Warning 5, NWS Atlanta, GA

May 19, 2018Bartow County, Floyd County, Gordon County, Georgia

NWS Atlanta, GA issued this flash flood warning at May 19, 2018, 12:04 AM EDT for Bartow County, Floyd County, Gordon County, Georgia. It was in force for 6 hr. 3 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
May 19, 2018, 12:04 AM EDT (04:04 UTC)
Expired
May 19, 2018, 6:00 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Flood severity
None

Counties Bartow County, GA, Floyd County, GA, Gordon County, GA

The radar

The Northeast Alabama radar (KHTX), 120 km from the middle of the area, began a volume at 04:03 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
May 19, 3:00 AM EDTFLASH FLOOD2 W Adairsville, GAROADWAY FLOODING AT THE INTERSECTION OF HWY 140 AND TWIN BRIDGES RD. WATER RESCUE WAS NEEDED FOR A TRAPPED VEHICLE.
May 19, 3:00 AM EDTFLASH FLOOD3 W Adairsville, GAMULTIPLE LANE CLOSURES ALONG HWY 140 DUE TO A MUDSLIDE FROM A FLOODED CONSTRUCTION ZONE BETWEEN TWIN BRIDGES RD. AND OAK GROVE RD. SEVERAL AREAS ALONG HWY 140 WERE CLOSED DUE TO FLOODING ON THE ROADWAYS BUT HAVE SINCE BEEN RE-OPENED.
May 19, 3:00 AM EDTFLASH FLOOD3 W Adairsville, GAROADWAY FLOODING AT THE INTERSECTION OF HWY 140 AND OAK GROVE RD. MULTIPLE PEOPLE WERE TRAPPED INSIDE OF A VEHICLE AND WATER RESCUE WAS NEEDED.

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 00:00Z, 4.1 hours before the alert went out and 125 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 2018-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 660 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 2018-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
660 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1014 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

950 
WGUS52 KFFC 190404
FFWFFC
GAC015-115-129-191000-
/O.NEW.KFFC.FF.W.0005.180519T0404Z-180519T1000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Peachtree City GA
1204 AM EDT SAT MAY 19 2018

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for...
  Southeastern Floyd County in northwestern Georgia...
  Central Gordon County in northwestern Georgia...
  Northwestern Bartow County in northwestern Georgia...

* Until 600 AM EDT.

* At 1203 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to two inches of rain have 
  already fallen. Flash flooding is expected.

* Some locations that will experience flooding include...
  Rome, Calhoun, Adairsville, Resaca, Plainville, Shannon,
  Sonoraville, Pinson, Lindale, Redbud, Audubon, Oakman and
  Nickelsville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3462 8490 3459 8468 3458 8468 3410 8507
      3413 8524

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 18, 10:45 PM EDTSpecial Weather StatementFFCBartow, Gordon, Murray, Polk30 min
May 18, 11:15 PM EDTSpecial Weather StatementFFCBartow, Gordon, Murray, Polk30 min
May 18, 11:23 PM EDTFlash Flood WarningFFCMurray, Whitfield6 hr
May 18, 11:45 PM EDTSpecial Weather StatementFFCGordon30 min
May 19, 9:15 AM EDTRiver Flood WarningFFCMurray, Whitfield30 hr
May 19, 11:16 AM EDTRiver Flood WarningFFCGordon11 hr
May 19, 5:38 PM EDTSpecial Weather StatementFFCStewart22 min
May 19, 6:51 PM EDTSpecial Weather StatementFFCWheeler24 min

Nearby

Flash Flood Warnings in Georgia, 2018Every flash flood warning in 2018

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.