Alert archive / Georgia / Flash Flood Warnings in 2001

Flash Flood Warning 11, NWS Atlanta, GA

August 5, 20015 counties in Georgia

NWS Atlanta, GA issued this flash flood warning at Aug 5, 2001, 1:01 AM EDT for 5 counties in Georgia. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 5, 2001, 1:01 AM EDT (05:01 UTC)
Expired: Aug 5, 2001, 4:00 AM EDT
In force: 3 hr
Issued by: NWS Atlanta, GA
Area: Whole counties

Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 78 km from the middle of the area, began a volume at 05:03 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.0 hours before the alert went out and 169 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: 1124 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1137 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 16 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 050506
FFWFFC
GAC047-055-083-295-313-050800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
101 AM EDT SUN AUG 5 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CATOOSA COUNTY IN NORTHWEST GEORGIA
  CHATTOOGA COUNTY IN NORTHWEST GEORGIA
  DADE COUNTY IN NORTHWEST GEORGIA
  WALKER COUNTY IN NORTHWEST GEORGIA
  WHITFIELD COUNTY IN NORTHWEST GEORGIA

* UNTIL 400 AM EDT

* AT 1251 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED   VERY HEAVY RAIN 4 MILES NORTHWEST OF LAFAYETTE...MOVING
WEST AT LESS THAN 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE LOOKOUT MOUNTAIN...TUNNEL
  HILL...TRION...TRENTON...SUMMERVILLE...ROSSVILLE...RINGGOLD...
  LAKEVIEW...INDIAN SPRINGS...FORT OGLETHORPE...FAIRVIEW...DALTON...
  CHICKAMAUGA AND CHATTANOOGA VALLEY

RADAR ESTIMATES OF RAINFALL RATES OVER THE AREA ARE OF ONE TO OVER
TWO INCHES AN HOUR WITH ESTIMATED RAINFALL TOTALS ALREADY EXCEEDING
TWO INCHES SOME AREAS. FLASH FLOOD GUIDANCE FOR THE AFFECTED
COUNTIES IS AROUND TWO INCHES IN ONE HOUR.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. 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.

YOU CAN REPORT SERIOUS FLOODING TO THE NATIONAL WEATHER SERVICE BY
CALLING 7 7 0 4 8 6 1 1 3 3 AT EXTENSION 2 0 4.

Nearby

Flash Flood Warnings in Georgia, 2001 Every flash flood warning in 2001

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.