Alert archive / Georgia / Special Weather Statements in 2019

Special Weather Statement, NWS Atlanta, GA

July 20, 2019Chattooga County, Floyd County, Walker County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 20, 2019, 10:29 AM EDT for Chattooga County, Floyd County, Walker County, Georgia. It was in force for 31 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
Jul 20, 2019, 10:29 AM EDT (14:29 UTC)
Expired
Jul 20, 2019, 11:00 AM EDT
In force
31 min
Issued by
NWS Atlanta, GA

Counties Chattooga County, GA, Floyd County, GA, Walker County, GA

The radar

The Northeast Alabama radar (KHTX), 80 km from the middle of the area, began a volume at 14:32 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, 2.5 hours before the alert went out and 159 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 2019-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 165 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 2019-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
165 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
877 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

155 
WWUS82 KFFC 201429
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
1029 AM EDT Sat Jul 20 2019
 
GAZ001>003-011-019-201500-
Chattooga GA-Catoosa GA-Walker GA-Dade GA-Floyd GA-
1029 AM EDT Sat Jul 20 2019

...SIGNIFICANT WEATHER ADVISORY FOR CHATTOOGA...SOUTHWESTERN
CATOOSA...WALKER...SOUTHERN DADE AND SOUTHWESTERN FLOYD COUNTIES
UNTIL 1100 AM EDT...

At 1029 AM EDT...a line of strong thunderstorms was along a line
extending from Noble to near Sulpher Springs to near Lindale...and
moving west at 10 mph.

  HAZARD...Heavy rain.

  IMPACT...Heavy rain may cause temporary street flooding especially 
           in poor drainage areas.

Some locations in the path of these storms include
Rome, Lafayette, Summerville, Chickamauga, Trion, Cave Spring,
Lyerly, Menlo, Center Post, Lindale, Noble, Wood Station, Tidings,
Linwood, Beaumont, Coosa, Cloudland, Berryton, Chattoogaville and
Cooper Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should slow down and be prepared for possible loss of
control due to hydroplaning.

LAT...LON 3489 8542 3482 8508 3481 8512 3482 8513
      3476 8515 3467 8525 3414 8513 3408 8536
      3452 8552 3467 8555
TIME...MOT...LOC 1429Z 073DEG 9KT 3477 8524 3467 8549 3414 8523 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 8:16 PM EDTSpecial Weather StatementFFCJohnson, Laurens29 min
Jul 19, 8:37 PM EDTSpecial Weather StatementFFCCrisp, Dodge, Telfair, Wilcox83 min
Jul 20, 8:03 AM EDTSpecial Weather StatementFFCPolk42 min
Jul 20, 8:06 AM EDTSpecial Weather StatementFFCBartow39 min
Jul 20, 8:44 AM EDTSpecial Weather StatementFFCPolk46 min
Jul 20, 9:29 AM EDTSpecial Weather StatementFFCPolk46 min
Jul 20, 9:40 AM EDTSpecial Weather StatementFFCWalker50 min
Jul 20, 10:47 AM EDTFlash Flood WarningFFCDade, Walker6 hr
Jul 20, 10:57 AM EDTSpecial Weather StatementFFCChattooga, Floyd48 min
Jul 20, 12:34 PM EDTSpecial Weather StatementFFCMurray41 min
Jul 20, 12:40 PM EDTRiver Flood WarningFFCPolk119 min
Jul 20, 1:04 PM EDTSpecial Weather StatementFFCMurray26 min
Jul 20, 3:29 PM EDTSpecial Weather StatementFFCChattahoochee, Stewart, Webster31 min
Jul 20, 3:47 PM EDTSpecial Weather StatementFFCUnion28 min
Jul 20, 4:22 PM EDTSpecial Weather StatementFFCUnion23 min
Jul 20, 4:50 PM EDTSpecial Weather StatementFFCUnion25 min
Jul 20, 4:58 PM EDTSpecial Weather StatementFFCHarris, Talbot32 min
Jul 20, 5:06 PM EDTSpecial Weather StatementFFCHall24 min
Jul 20, 6:14 PM EDTSpecial Weather StatementFFCPolk31 min
Jul 20, 6:47 PM EDTSpecial Weather StatementFFCPolk28 min
Jul 20, 7:09 PM EDTSpecial Weather StatementFFCDouglas36 min
Jul 20, 7:21 PM EDTSpecial Weather StatementFFCCobb24 min
Jul 20, 7:44 PM EDTSpecial Weather StatementFFCCobb31 min
Jul 20, 7:57 PM EDTSpecial Weather StatementFFCLumpkin33 min

Nearby

Special Weather Statements in Georgia, 2019Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.