Alert archive / Georgia / Flash Flood Warnings in 2014

Flash Flood Warning 38, NWS Atlanta, GA

October 10, 2014Gilmer County, Georgia

NWS Atlanta, GA issued this flash flood warning at Oct 10, 2014, 7:23 PM 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: Oct 10, 2014, 7:23 PM EDT (23:23 UTC)
Expired: Oct 11, 2014, 1:30 AM 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), 148 km from the middle of the area, began a volume at 23:25 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, 11.4 hours before the alert went out and 148 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: 374 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 915 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 27 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.

513 
WGUS52 KFFC 102323
FFWFFC
GAC123-110530-
/O.NEW.KFFC.FF.W.0038.141010T2323Z-141011T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
723 PM EDT FRI OCT 10 2014

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 130 AM EDT SATURDAY

* AT 713 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

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

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 OR TWEET US YOUR REPORT AT
NWSATLANTA.

&&

LAT...LON 3474 8455 3473 8441 3464 8441 3465 8454

$$

1 follow-up statement

844 
WGUS72 KFFC 110214
FFSFFC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1014 PM EDT FRI OCT 10 2014

GAC123-110224-
/O.CAN.KFFC.FF.W.0038.000000T0000Z-141011T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GILMER GA-
1014 PM EDT FRI OCT 10 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL GILMER
COUNTY...

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 3474 8455 3473 8441 3464 8441 3465 8454

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 9, 11:13 PM EDT	Special Weather Statement	FFC	Taliaferro	32 min
Oct 9, 11:50 PM EDT	Special Weather Statement	FFC	Taliaferro	25 min
Oct 10, 4:13 PM EDT	Special Weather Statement	FFC	Dade	47 min
Oct 10, 4:42 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Walker, Whitfield	48 min
Oct 10, 5:30 PM EDT	Tornado Warning	FFC	Catoosa, Walker, Whitfield	45 min
Oct 10, 6:14 PM EDT	Special Weather Statement	FFC	Murray, Whitfield	61 min
Oct 10, 6:36 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Murray	39 min
Oct 10, 7:16 PM EDT	Special Weather Statement	FFC	Gilmer	44 min

Nearby

Flash Flood Warnings in Georgia, 2014 Every flash flood warning in 2014

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.