Alert archive / Georgia / Special Weather Statements in 2016

Special Weather Statement, NWS Atlanta, GA

August 7, 2016Catoosa County, Chattooga County, Walker County, Georgia

NWS Atlanta, GA issued this special weather statement at Aug 7, 2016, 10:47 PM EDT for Catoosa County, Chattooga County, Walker County, Georgia. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 7, 2016, 10:47 PM EDT (02:47 UTC)
Expired
Aug 7, 2016, 11:45 PM EDT
In force
58 min
Issued by
NWS Atlanta, GA

Counties Catoosa County, GA, Chattooga County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 77 km from the middle of the area, began a volume at 02:49 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, 2.8 hours before the alert went out and 170 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 2016-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1202 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 2016-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
1202 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1226 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

624 
WWUS82 KFFC 080247
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1047 PM EDT SUN AUG 7 2016
 
GAZ002-003-011-080345-
CATOOSA GA-CHATTOOGA GA-WALKER GA-
1047 PM EDT SUN AUG 7 2016

...SIGNIFICANT WEATHER ADVISORY FOR CATOOSA...NORTHWESTERN CHATTOOGA
AND WALKER COUNTIES UNTIL 1145 PM EDT...

AT 1043 PM EDT...THUNDERSTORMS WITH HEAVY RAIN EXTENDED ALONG A LINE
FROM NORTHERN WALKER AND CATOOSA COUNTIES TO NORTHWEST CHATTOOGA
COUNTY. THE STORMS ARE NEARLY STATIONARY WHICH IS LIKELY CAUSING
AREAS OF LOWLAND FLOODING. RADAR ESTIMATES ONE TO TWO INCHES OF RAIN
HAS FALLEN IN THE PAST 90 MINUTES. ADDITIONAL RAINFALL OF 1/4
TO 3/4 INCH CAN BE EXPECTED THROUGH MIDNIGHT.

  HAZARD...HEAVY RAIN. 

  IMPACT...MOTORISTS SHOULD SLOW DOWN AND BE PREPARED FOR POSSIBLE 
           LOSS OF CONTROL DUE TO HYDROPLANING. ALSO...THE HEAVY 
           RAIN MAY CAUSE TEMPORARY STREET FLOODING OR ROAD PONDING 
           IN SLOW DRAINAGE AREAS. WHEN WATER COVERS THE 
           ROAD...REMEMBER TO TURN AROUND DON'T DROWN. 

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE
LAFAYETTE...SUMMERVILLE...RINGGOLD...FORT OGLETHORPE...ROSSVILLE...
CHICKAMAUGA...TRION...LOOKOUT MOUNTAIN... LYERLY... MENLO...
LAKEVIEW...NAOMI... CLOUDLAND...BOYNTON...SUTTLES MILL...
BERRYTON...NOBLE...COOPER HEIGHTS...INDIAN SPRINGS AND FAIRVIEW.

LAT...LON 3499 8507 3481 8511 3482 8513 3473 8517
      3472 8514 3459 8517 3435 8547 3462 8553
      3476 8545 3484 8545 3498 8536
TIME...MOT...LOC 0243Z 059DEG 7KT 3488 8529 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 8:08 PM EDTAreal Flood WarningFFCFannin3 hr
Aug 7, 9:10 PM EDTAreal Flood WarningFFCPolk5 hr
Aug 7, 9:14 PM EDTSpecial Weather StatementFFCWalker31 min
Aug 7, 9:16 PM EDTSpecial Weather StatementFFCDade29 min
Aug 7, 9:57 PM EDTSpecial Weather StatementFFCCatoosa, Dade, Walker48 min
Aug 7, 11:29 PM EDTAreal Flood WarningFFCCatoosa, Walker6 hr
Aug 7, 11:31 PM EDTSpecial Weather StatementFFCHall44 min

Nearby

Special Weather Statements in Georgia, 2016Every special weather statement in 2016

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.